./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:14:16,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:14:16,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:14:16,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:14:16,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:14:16,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:14:16,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:14:16,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:14:16,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:14:16,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:14:16,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:14:16,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:14:16,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:14:16,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:14:16,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:14:16,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:14:16,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:14:16,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:14:16,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:14:16,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:14:16,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:14:16,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:14:16,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:14:16,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:14:16,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:14:16,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:14:16,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:14:16,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:14:16,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:14:16,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:14:16,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:14:16,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:14:16,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:14:16,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:14:16,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:14:16,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:14:16,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:14:16,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:14:16,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:14:16,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:14:16,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:14:16,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-11-20 23:14:16,668 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:14:16,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:14:16,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:14:16,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:14:16,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:14:16,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:14:16,673 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:14:16,673 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:14:16,673 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:14:16,674 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:14:16,675 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:14:16,675 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:14:16,676 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:14:16,676 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:14:16,676 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:14:16,676 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:14:16,677 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:14:16,677 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:14:16,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 23:14:16,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 23:14:16,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:14:16,678 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:14:16,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:14:16,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:14:16,679 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 23:14:16,679 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 23:14:16,680 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 23:14:16,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:14:16,680 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 23:14:16,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:14:16,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:14:16,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:14:16,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:14:16,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:14:16,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:14:16,682 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:14:16,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:14:16,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:14:16,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:14:16,683 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_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-11-20 23:14:16,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:14:16,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:14:16,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:14:16,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:14:16,987 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:14:16,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-20 23:14:17,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/data/2289b2684/69a4db8ae0d345a7b04cbe37d81fe0f2/FLAG252d63948 [2021-11-20 23:14:17,681 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:14:17,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-20 23:14:17,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/data/2289b2684/69a4db8ae0d345a7b04cbe37d81fe0f2/FLAG252d63948 [2021-11-20 23:14:17,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/data/2289b2684/69a4db8ae0d345a7b04cbe37d81fe0f2 [2021-11-20 23:14:17,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:14:17,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:14:17,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:14:17,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:14:17,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:14:17,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:17" (1/1) ... [2021-11-20 23:14:17,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ceb4b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:17, skipping insertion in model container [2021-11-20 23:14:17,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:17" (1/1) ... [2021-11-20 23:14:17,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:14:18,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:14:18,665 WARN L230 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_62716f3c-59a8-4a10-834b-b2414baf6a8c/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-20 23:14:18,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:14:18,748 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) [2021-11-20 23:14:18,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5acb208e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:18, skipping insertion in model container [2021-11-20 23:14:18,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:14:18,752 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 23:14:18,755 INFO L158 Benchmark]: Toolchain (without parser) took 824.92ms. Allocated memory is still 123.7MB. Free memory was 90.0MB in the beginning and 91.2MB in the end (delta: -1.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:14:18,756 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:14:18,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 822.44ms. Allocated memory is still 123.7MB. Free memory was 89.6MB in the beginning and 91.2MB in the end (delta: -1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:14:18,761 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 822.44ms. Allocated memory is still 123.7MB. Free memory was 89.6MB in the beginning and 91.2MB in the end (delta: -1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: 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_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:14:21,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:14:21,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:14:21,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:14:21,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:14:21,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:14:21,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:14:21,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:14:21,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:14:21,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:14:21,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:14:21,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:14:21,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:14:21,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:14:21,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:14:21,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:14:21,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:14:21,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:14:21,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:14:21,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:14:21,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:14:21,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:14:21,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:14:21,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:14:21,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:14:21,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:14:21,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:14:21,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:14:21,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:14:21,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:14:21,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:14:21,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:14:21,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:14:21,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:14:21,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:14:21,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:14:21,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:14:21,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:14:21,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:14:21,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:14:21,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:14:21,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-11-20 23:14:21,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:14:21,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:14:21,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:14:21,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:14:21,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:14:21,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:14:21,311 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:14:21,312 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:14:21,312 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:14:21,312 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:14:21,314 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:14:21,314 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:14:21,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 23:14:21,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 23:14:21,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:14:21,317 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:14:21,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:14:21,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:14:21,318 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 23:14:21,318 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 23:14:21,318 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 23:14:21,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:14:21,319 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 23:14:21,319 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:14:21,319 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:14:21,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:14:21,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:14:21,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:14:21,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:14:21,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:14:21,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:14:21,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:14:21,322 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:14:21,322 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:14:21,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:14:21,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:14:21,323 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_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-11-20 23:14:21,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:14:21,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:14:21,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:14:21,806 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:14:21,807 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:14:21,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-20 23:14:21,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/data/578cfbdf7/360ecb5a14444c8598898580d57e9f7c/FLAGa02c94b82 [2021-11-20 23:14:22,636 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:14:22,640 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-20 23:14:22,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/data/578cfbdf7/360ecb5a14444c8598898580d57e9f7c/FLAGa02c94b82 [2021-11-20 23:14:22,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/data/578cfbdf7/360ecb5a14444c8598898580d57e9f7c [2021-11-20 23:14:22,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:14:22,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:14:22,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:14:22,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:14:22,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:14:22,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:22" (1/1) ... [2021-11-20 23:14:22,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8af433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:22, skipping insertion in model container [2021-11-20 23:14:22,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:22" (1/1) ... [2021-11-20 23:14:22,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:14:22,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:14:23,675 WARN L230 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_62716f3c-59a8-4a10-834b-b2414baf6a8c/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-20 23:14:23,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:14:23,761 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 23:14:23,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:14:23,880 WARN L230 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_62716f3c-59a8-4a10-834b-b2414baf6a8c/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-20 23:14:23,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:14:23,926 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:14:23,996 WARN L230 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_62716f3c-59a8-4a10-834b-b2414baf6a8c/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-20 23:14:24,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:14:24,198 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:14:24,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24 WrapperNode [2021-11-20 23:14:24,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:14:24,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:14:24,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:14:24,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:14:24,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24" (1/1) ... [2021-11-20 23:14:24,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24" (1/1) ... [2021-11-20 23:14:24,342 INFO L137 Inliner]: procedures = 353, calls = 114, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 386 [2021-11-20 23:14:24,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:14:24,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:14:24,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:14:24,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:14:24,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24" (1/1) ... [2021-11-20 23:14:24,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24" (1/1) ... [2021-11-20 23:14:24,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24" (1/1) ... [2021-11-20 23:14:24,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24" (1/1) ... [2021-11-20 23:14:24,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24" (1/1) ... [2021-11-20 23:14:24,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24" (1/1) ... [2021-11-20 23:14:24,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24" (1/1) ... [2021-11-20 23:14:24,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:14:24,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:14:24,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:14:24,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:14:24,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24" (1/1) ... [2021-11-20 23:14:24,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:14:24,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:24,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:14:24,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:14:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 23:14:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 23:14:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:14:24,601 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:14:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:14:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-20 23:14:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:14:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 23:14:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:14:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-20 23:14:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:14:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-20 23:14:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:14:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:14:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:14:24,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:14:25,075 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:14:25,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:14:26,495 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:14:26,512 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:14:26,513 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-20 23:14:26,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:26 BoogieIcfgContainer [2021-11-20 23:14:26,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:14:26,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:14:26,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:14:26,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:14:26,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:14:22" (1/3) ... [2021-11-20 23:14:26,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2f6281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:26, skipping insertion in model container [2021-11-20 23:14:26,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:24" (2/3) ... [2021-11-20 23:14:26,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2f6281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:26, skipping insertion in model container [2021-11-20 23:14:26,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:26" (3/3) ... [2021-11-20 23:14:26,529 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-11-20 23:14:26,535 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:14:26,535 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2021-11-20 23:14:26,612 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:14:26,621 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-20 23:14:26,622 INFO L340 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2021-11-20 23:14:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 147 states have (on average 1.945578231292517) internal successors, (286), 241 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:14:26,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 23:14:26,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:26,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 23:14:26,661 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:14:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:26,668 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2021-11-20 23:14:26,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:14:26,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101685865] [2021-11-20 23:14:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:26,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:14:26,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:14:26,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:14:26,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:14:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:26,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:14:26,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:26,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:14:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:27,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:27,045 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:14:27,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101685865] [2021-11-20 23:14:27,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101685865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:27,046 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:27,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:14:27,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798882992] [2021-11-20 23:14:27,049 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:27,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:27,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:14:27,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:27,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:27,106 INFO L87 Difference]: Start difference. First operand has 245 states, 147 states have (on average 1.945578231292517) internal successors, (286), 241 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-20 23:14:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:27,793 INFO L93 Difference]: Finished difference Result 253 states and 287 transitions. [2021-11-20 23:14:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:27,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-20 23:14:27,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:27,808 INFO L225 Difference]: With dead ends: 253 [2021-11-20 23:14:27,809 INFO L226 Difference]: Without dead ends: 251 [2021-11-20 23:14:27,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:27,815 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 241 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:27,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 207 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:14:27,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-20 23:14:27,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 235. [2021-11-20 23:14:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 142 states have (on average 1.8591549295774648) internal successors, (264), 231 states have internal predecessors, (264), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:14:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 268 transitions. [2021-11-20 23:14:27,873 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 268 transitions. Word has length 3 [2021-11-20 23:14:27,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:27,874 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 268 transitions. [2021-11-20 23:14:27,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-20 23:14:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 268 transitions. [2021-11-20 23:14:27,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 23:14:27,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:27,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 23:14:27,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:28,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:14:28,090 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:14:28,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2021-11-20 23:14:28,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:14:28,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547512960] [2021-11-20 23:14:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:28,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:14:28,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:14:28,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:14:28,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:14:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:28,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:14:28,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:28,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:14:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:28,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:28,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:14:28,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547512960] [2021-11-20 23:14:28,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547512960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:28,467 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:28,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 23:14:28,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854102413] [2021-11-20 23:14:28,467 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:28,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:14:28,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:14:28,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:14:28,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:14:28,470 INFO L87 Difference]: Start difference. First operand 235 states and 268 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-20 23:14:30,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:30,163 INFO L93 Difference]: Finished difference Result 234 states and 267 transitions. [2021-11-20 23:14:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:30,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 3 [2021-11-20 23:14:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:30,168 INFO L225 Difference]: With dead ends: 234 [2021-11-20 23:14:30,168 INFO L226 Difference]: Without dead ends: 234 [2021-11-20 23:14:30,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:14:30,170 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 13 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:30,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 600 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:14:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-20 23:14:30,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-20 23:14:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 142 states have (on average 1.852112676056338) internal successors, (263), 230 states have internal predecessors, (263), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:14:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 267 transitions. [2021-11-20 23:14:30,189 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 267 transitions. Word has length 3 [2021-11-20 23:14:30,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:30,190 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 267 transitions. [2021-11-20 23:14:30,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-20 23:14:30,191 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 267 transitions. [2021-11-20 23:14:30,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 23:14:30,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:30,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 23:14:30,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:30,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:14:30,409 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:14:30,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:30,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2021-11-20 23:14:30,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:14:30,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467589879] [2021-11-20 23:14:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:30,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:14:30,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:14:30,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:14:30,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:14:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:30,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:14:30,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:30,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:14:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:30,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:31,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:14:31,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467589879] [2021-11-20 23:14:31,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467589879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:31,287 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:31,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:14:31,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091561696] [2021-11-20 23:14:31,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:31,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:14:31,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:14:31,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:14:31,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:14:31,290 INFO L87 Difference]: Start difference. First operand 234 states and 267 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2021-11-20 23:14:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:34,300 INFO L93 Difference]: Finished difference Result 247 states and 282 transitions. [2021-11-20 23:14:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:14:34,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 6 [2021-11-20 23:14:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:34,304 INFO L225 Difference]: With dead ends: 247 [2021-11-20 23:14:34,304 INFO L226 Difference]: Without dead ends: 247 [2021-11-20 23:14:34,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:14:34,306 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 54 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:34,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 603 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 23:14:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-20 23:14:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 240. [2021-11-20 23:14:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 148 states have (on average 1.8243243243243243) internal successors, (270), 236 states have internal predecessors, (270), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:14:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 274 transitions. [2021-11-20 23:14:34,328 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 274 transitions. Word has length 6 [2021-11-20 23:14:34,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:34,329 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 274 transitions. [2021-11-20 23:14:34,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2021-11-20 23:14:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 274 transitions. [2021-11-20 23:14:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 23:14:34,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:34,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:34,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-20 23:14:34,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:14:34,545 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:14:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:34,545 INFO L85 PathProgramCache]: Analyzing trace with hash -75834803, now seen corresponding path program 1 times [2021-11-20 23:14:34,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:14:34,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092195498] [2021-11-20 23:14:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:34,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:14:34,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:14:34,548 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:14:34,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 23:14:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:34,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:14:34,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:34,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:34,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:14:34,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092195498] [2021-11-20 23:14:34,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092195498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:34,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [109949213] [2021-11-20 23:14:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:34,814 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:14:34,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:14:34,815 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:14:34,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-20 23:14:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:35,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:14:35,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:35,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:35,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [109949213] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:35,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383305857] [2021-11-20 23:14:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:35,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:35,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:35,247 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:35,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 23:14:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:35,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:14:35,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:35,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:35,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383305857] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:35,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:14:35,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-11-20 23:14:35,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906971823] [2021-11-20 23:14:35,461 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:14:35,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:14:35,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:14:35,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:14:35,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:14:35,465 INFO L87 Difference]: Start difference. First operand 240 states and 274 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-20 23:14:35,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:35,601 INFO L93 Difference]: Finished difference Result 248 states and 281 transitions. [2021-11-20 23:14:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:35,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 11 [2021-11-20 23:14:35,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:35,604 INFO L225 Difference]: With dead ends: 248 [2021-11-20 23:14:35,604 INFO L226 Difference]: Without dead ends: 248 [2021-11-20 23:14:35,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:14:35,615 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 15 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:35,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1044 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:14:35,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-20 23:14:35,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247. [2021-11-20 23:14:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 155 states have (on average 1.7870967741935484) internal successors, (277), 243 states have internal predecessors, (277), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:14:35,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 281 transitions. [2021-11-20 23:14:35,653 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 281 transitions. Word has length 11 [2021-11-20 23:14:35,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:35,653 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 281 transitions. [2021-11-20 23:14:35,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-20 23:14:35,654 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 281 transitions. [2021-11-20 23:14:35,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:14:35,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:35,655 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-20 23:14:35,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:35,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:36,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:36,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:36,259 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:14:36,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:36,260 INFO L85 PathProgramCache]: Analyzing trace with hash 6917423, now seen corresponding path program 1 times [2021-11-20 23:14:36,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:14:36,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395323417] [2021-11-20 23:14:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:36,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:14:36,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:14:36,262 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:14:36,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 23:14:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:36,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:14:36,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:36,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:14:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:36,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:39,200 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:14:39,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395323417] [2021-11-20 23:14:39,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395323417] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:39,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [982287139] [2021-11-20 23:14:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:39,201 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:14:39,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:14:39,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:14:39,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-20 23:14:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:39,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:14:39,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:39,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:14:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:39,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:40,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [982287139] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:40,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725714079] [2021-11-20 23:14:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:40,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:40,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:40,723 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:40,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 23:14:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:40,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:14:40,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:40,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:14:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:41,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:41,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725714079] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:41,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:14:41,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-11-20 23:14:41,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449430429] [2021-11-20 23:14:41,860 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:14:41,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:14:41,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:14:41,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:14:41,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:14:41,861 INFO L87 Difference]: Start difference. First operand 247 states and 281 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:48,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:48,412 INFO L93 Difference]: Finished difference Result 250 states and 283 transitions. [2021-11-20 23:14:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:14:48,413 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 23:14:48,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:48,415 INFO L225 Difference]: With dead ends: 250 [2021-11-20 23:14:48,415 INFO L226 Difference]: Without dead ends: 250 [2021-11-20 23:14:48,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:14:48,417 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 41 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:48,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1292 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-20 23:14:48,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-20 23:14:48,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-11-20 23:14:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 159 states have (on average 1.7547169811320755) internal successors, (279), 246 states have internal predecessors, (279), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:14:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 283 transitions. [2021-11-20 23:14:48,430 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 283 transitions. Word has length 14 [2021-11-20 23:14:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:48,430 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 283 transitions. [2021-11-20 23:14:48,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 283 transitions. [2021-11-20 23:14:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 23:14:48,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:48,432 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:48,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:48,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-20 23:14:48,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:49,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-20 23:14:49,049 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:14:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:49,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2102751937, now seen corresponding path program 2 times [2021-11-20 23:14:49,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:14:49,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204146459] [2021-11-20 23:14:49,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:14:49,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:14:49,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:14:49,054 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:14:49,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 23:14:49,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 23:14:49,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:14:49,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:14:49,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:49,302 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:14:49,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-11-20 23:14:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 23:14:49,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 23:14:49,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:14:49,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204146459] [2021-11-20 23:14:49,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204146459] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:49,689 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:49,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-20 23:14:49,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418592750] [2021-11-20 23:14:49,689 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:49,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:14:49,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:14:49,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:14:49,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:14:49,690 INFO L87 Difference]: Start difference. First operand 250 states and 283 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-20 23:14:50,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:50,096 INFO L93 Difference]: Finished difference Result 265 states and 299 transitions. [2021-11-20 23:14:50,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:50,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 27 [2021-11-20 23:14:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:50,098 INFO L225 Difference]: With dead ends: 265 [2021-11-20 23:14:50,098 INFO L226 Difference]: Without dead ends: 265 [2021-11-20 23:14:50,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:14:50,099 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 237 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:50,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 222 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 23:14:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-20 23:14:50,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 249. [2021-11-20 23:14:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 159 states have (on average 1.748427672955975) internal successors, (278), 245 states have internal predecessors, (278), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:14:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 282 transitions. [2021-11-20 23:14:50,110 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 282 transitions. Word has length 27 [2021-11-20 23:14:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:50,110 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 282 transitions. [2021-11-20 23:14:50,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-20 23:14:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 282 transitions. [2021-11-20 23:14:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 23:14:50,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:50,112 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:50,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:50,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:14:50,323 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:14:50,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2102751938, now seen corresponding path program 1 times [2021-11-20 23:14:50,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:14:50,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668907373] [2021-11-20 23:14:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:50,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:14:50,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:14:50,328 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:14:50,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 23:14:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:50,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:14:50,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:50,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:50,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:14:50,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668907373] [2021-11-20 23:14:50,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668907373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:50,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1348235981] [2021-11-20 23:14:50,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:50,842 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:14:50,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:14:50,846 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:14:50,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-20 23:14:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:51,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:14:51,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:51,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:51,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1348235981] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:51,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211585022] [2021-11-20 23:14:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:51,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:51,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:51,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:51,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 23:14:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:51,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:14:51,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:51,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:51,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211585022] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:51,990 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:14:51,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 19 [2021-11-20 23:14:51,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333666080] [2021-11-20 23:14:51,991 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:14:51,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:14:51,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:14:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:14:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:14:51,993 INFO L87 Difference]: Start difference. First operand 249 states and 282 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 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) [2021-11-20 23:14:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:52,763 INFO L93 Difference]: Finished difference Result 277 states and 311 transitions. [2021-11-20 23:14:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:14:52,764 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 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 27 [2021-11-20 23:14:52,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:52,766 INFO L225 Difference]: With dead ends: 277 [2021-11-20 23:14:52,766 INFO L226 Difference]: Without dead ends: 277 [2021-11-20 23:14:52,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-11-20 23:14:52,768 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 1308 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:52,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 2358 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 23:14:52,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-20 23:14:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-11-20 23:14:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 187 states have (on average 1.641711229946524) internal successors, (307), 273 states have internal predecessors, (307), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:14:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 311 transitions. [2021-11-20 23:14:52,778 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 311 transitions. Word has length 27 [2021-11-20 23:14:52,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:52,778 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 311 transitions. [2021-11-20 23:14:52,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 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) [2021-11-20 23:14:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 311 transitions. [2021-11-20 23:14:52,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-20 23:14:52,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:52,780 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:52,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:52,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-20 23:14:53,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-20 23:14:53,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:53,396 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:14:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash 233252627, now seen corresponding path program 2 times [2021-11-20 23:14:53,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:14:53,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402202633] [2021-11-20 23:14:53,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:14:53,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:14:53,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:14:53,398 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:14:53,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 23:14:53,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 23:14:53,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:14:53,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:14:53,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:53,619 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 23:14:53,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 23:14:53,628 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:14:53,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:14:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:14:54,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:14:58,042 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:14:58,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402202633] [2021-11-20 23:14:58,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402202633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:58,042 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:58,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-20 23:14:58,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604790877] [2021-11-20 23:14:58,042 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:58,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:14:58,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:14:58,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:14:58,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 23:14:58,043 INFO L87 Difference]: Start difference. First operand 277 states and 311 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-20 23:14:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:59,590 INFO L93 Difference]: Finished difference Result 276 states and 310 transitions. [2021-11-20 23:14:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:14:59,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 47 [2021-11-20 23:14:59,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:59,594 INFO L225 Difference]: With dead ends: 276 [2021-11-20 23:14:59,594 INFO L226 Difference]: Without dead ends: 276 [2021-11-20 23:14:59,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 23:14:59,595 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 6 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:59,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 572 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 131 Unchecked, 1.5s Time] [2021-11-20 23:14:59,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-20 23:14:59,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-20 23:14:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 187 states have (on average 1.6363636363636365) internal successors, (306), 272 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:14:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 310 transitions. [2021-11-20 23:14:59,604 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 310 transitions. Word has length 47 [2021-11-20 23:14:59,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:59,604 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 310 transitions. [2021-11-20 23:14:59,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-20 23:14:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 310 transitions. [2021-11-20 23:14:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 23:14:59,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:59,606 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:59,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:59,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:14:59,826 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:14:59,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:59,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1065773764, now seen corresponding path program 1 times [2021-11-20 23:14:59,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:14:59,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476369135] [2021-11-20 23:14:59,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:59,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:14:59,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:14:59,827 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:14:59,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 23:15:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:00,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:15:00,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:00,288 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:15:00,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-20 23:15:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:00,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:00,441 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:15:00,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476369135] [2021-11-20 23:15:00,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476369135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:00,442 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:00,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:15:00,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918998125] [2021-11-20 23:15:00,442 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:00,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:15:00,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:15:00,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:15:00,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:15:00,444 INFO L87 Difference]: Start difference. First operand 276 states and 310 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:15:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:01,058 INFO L93 Difference]: Finished difference Result 287 states and 322 transitions. [2021-11-20 23:15:01,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:15:01,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-11-20 23:15:01,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:01,065 INFO L225 Difference]: With dead ends: 287 [2021-11-20 23:15:01,065 INFO L226 Difference]: Without dead ends: 287 [2021-11-20 23:15:01,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:15:01,066 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 222 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:01,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 211 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:15:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-20 23:15:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 271. [2021-11-20 23:15:01,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 187 states have (on average 1.6096256684491979) internal successors, (301), 267 states have internal predecessors, (301), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:15:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 305 transitions. [2021-11-20 23:15:01,075 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 305 transitions. Word has length 55 [2021-11-20 23:15:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:01,076 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 305 transitions. [2021-11-20 23:15:01,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:15:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 305 transitions. [2021-11-20 23:15:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 23:15:01,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:01,078 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:01,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:01,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:15:01,296 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:15:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:01,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1065773765, now seen corresponding path program 1 times [2021-11-20 23:15:01,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:15:01,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712124684] [2021-11-20 23:15:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:01,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:15:01,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:15:01,298 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:15:01,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 23:15:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:01,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:15:01,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:01,895 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-20 23:15:01,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-11-20 23:15:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:02,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:02,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:15:02,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712124684] [2021-11-20 23:15:02,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712124684] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:02,674 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:02,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 23:15:02,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309127741] [2021-11-20 23:15:02,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:02,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:15:02,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:15:02,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:15:02,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:15:02,676 INFO L87 Difference]: Start difference. First operand 271 states and 305 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:06,220 INFO L93 Difference]: Finished difference Result 451 states and 516 transitions. [2021-11-20 23:15:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:15:06,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 55 [2021-11-20 23:15:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:06,225 INFO L225 Difference]: With dead ends: 451 [2021-11-20 23:15:06,225 INFO L226 Difference]: Without dead ends: 451 [2021-11-20 23:15:06,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:15:06,226 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 1071 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:06,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 1145 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-20 23:15:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-20 23:15:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 375. [2021-11-20 23:15:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 291 states have (on average 1.711340206185567) internal successors, (498), 370 states have internal predecessors, (498), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:15:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 504 transitions. [2021-11-20 23:15:06,239 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 504 transitions. Word has length 55 [2021-11-20 23:15:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:06,240 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 504 transitions. [2021-11-20 23:15:06,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:06,240 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 504 transitions. [2021-11-20 23:15:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-20 23:15:06,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:06,241 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:06,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:06,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:15:06,454 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:15:06,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:06,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2067963466, now seen corresponding path program 1 times [2021-11-20 23:15:06,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:15:06,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435934340] [2021-11-20 23:15:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:06,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:15:06,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:15:06,456 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:15:06,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 23:15:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:06,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 23:15:06,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:06,969 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-20 23:15:06,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-20 23:15:06,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-11-20 23:15:07,686 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-20 23:15:07,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 64 [2021-11-20 23:15:07,699 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:15:07,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 54 [2021-11-20 23:15:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:07,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:09,629 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 23:15:09,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-20 23:15:14,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 56 [2021-11-20 23:15:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:14,488 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:15:14,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435934340] [2021-11-20 23:15:14,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435934340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:14,489 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:14,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-20 23:15:14,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456527025] [2021-11-20 23:15:14,489 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:14,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:15:14,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:15:14,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:15:14,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=163, Unknown=2, NotChecked=0, Total=210 [2021-11-20 23:15:14,490 INFO L87 Difference]: Start difference. First operand 375 states and 504 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:14,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:14,729 INFO L93 Difference]: Finished difference Result 376 states and 505 transitions. [2021-11-20 23:15:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:15:14,730 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2021-11-20 23:15:14,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:14,733 INFO L225 Difference]: With dead ends: 376 [2021-11-20 23:15:14,734 INFO L226 Difference]: Without dead ends: 376 [2021-11-20 23:15:14,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=57, Invalid=213, Unknown=2, NotChecked=0, Total=272 [2021-11-20 23:15:14,735 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 7 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:14,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1718 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 136 Unchecked, 0.1s Time] [2021-11-20 23:15:14,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-20 23:15:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-11-20 23:15:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 292 states have (on average 1.7089041095890412) internal successors, (499), 371 states have internal predecessors, (499), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:15:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 505 transitions. [2021-11-20 23:15:14,749 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 505 transitions. Word has length 58 [2021-11-20 23:15:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:14,749 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 505 transitions. [2021-11-20 23:15:14,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 505 transitions. [2021-11-20 23:15:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-20 23:15:14,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:14,751 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:14,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:14,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:15:14,970 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:15:14,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:14,971 INFO L85 PathProgramCache]: Analyzing trace with hash -317642580, now seen corresponding path program 1 times [2021-11-20 23:15:14,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:15:14,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664657556] [2021-11-20 23:15:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:14,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:15:14,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:15:14,972 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:15:14,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 23:15:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:15,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:15:15,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:15,402 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:15,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:15,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:15:15,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664657556] [2021-11-20 23:15:15,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664657556] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:15,687 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:15,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-20 23:15:15,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650528460] [2021-11-20 23:15:15,687 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:15,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:15:15,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:15:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:15:15,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:15:15,689 INFO L87 Difference]: Start difference. First operand 376 states and 505 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:16,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:16,370 INFO L93 Difference]: Finished difference Result 294 states and 329 transitions. [2021-11-20 23:15:16,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:15:16,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2021-11-20 23:15:16,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:16,374 INFO L225 Difference]: With dead ends: 294 [2021-11-20 23:15:16,374 INFO L226 Difference]: Without dead ends: 294 [2021-11-20 23:15:16,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:15:16,375 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 286 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:16,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 1185 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:15:16,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-20 23:15:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 272. [2021-11-20 23:15:16,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 189 states have (on average 1.597883597883598) internal successors, (302), 268 states have internal predecessors, (302), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:15:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 306 transitions. [2021-11-20 23:15:16,395 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 306 transitions. Word has length 59 [2021-11-20 23:15:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:16,395 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 306 transitions. [2021-11-20 23:15:16,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:16,396 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 306 transitions. [2021-11-20 23:15:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 23:15:16,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:16,397 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:16,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:16,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:15:16,603 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:15:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:16,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1256967413, now seen corresponding path program 1 times [2021-11-20 23:15:16,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:15:16,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035058997] [2021-11-20 23:15:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:16,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:15:16,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:15:16,605 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:15:16,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 23:15:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:16,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:15:16,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:17,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:17,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-11-20 23:15:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:17,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:15:17,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035058997] [2021-11-20 23:15:17,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035058997] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:17,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:17,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 23:15:17,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381558046] [2021-11-20 23:15:17,963 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:17,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:15:17,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:15:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:15:17,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:15:17,965 INFO L87 Difference]: Start difference. First operand 272 states and 306 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:15:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:19,581 INFO L93 Difference]: Finished difference Result 470 states and 536 transitions. [2021-11-20 23:15:19,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:15:19,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2021-11-20 23:15:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:19,586 INFO L225 Difference]: With dead ends: 470 [2021-11-20 23:15:19,586 INFO L226 Difference]: Without dead ends: 470 [2021-11-20 23:15:19,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:15:19,587 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 751 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:19,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 870 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 23:15:19,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-20 23:15:19,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 268. [2021-11-20 23:15:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 189 states have (on average 1.5767195767195767) internal successors, (298), 264 states have internal predecessors, (298), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:15:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 302 transitions. [2021-11-20 23:15:19,600 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 302 transitions. Word has length 60 [2021-11-20 23:15:19,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:19,601 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 302 transitions. [2021-11-20 23:15:19,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:15:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 302 transitions. [2021-11-20 23:15:19,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-20 23:15:19,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:19,602 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:19,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:19,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:15:19,822 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:15:19,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:19,822 INFO L85 PathProgramCache]: Analyzing trace with hash -311284142, now seen corresponding path program 1 times [2021-11-20 23:15:19,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:15:19,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365377013] [2021-11-20 23:15:19,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:19,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:15:19,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:15:19,824 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:15:19,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 23:15:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:20,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:15:20,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:20,237 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:15:20,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-20 23:15:20,322 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:15:20,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-11-20 23:15:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:20,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:20,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:15:20,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365377013] [2021-11-20 23:15:20,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365377013] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:20,485 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:20,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:15:20,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487196877] [2021-11-20 23:15:20,485 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:20,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:15:20,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:15:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:15:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:15:20,486 INFO L87 Difference]: Start difference. First operand 268 states and 302 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:15:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:21,184 INFO L93 Difference]: Finished difference Result 275 states and 310 transitions. [2021-11-20 23:15:21,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:15:21,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-20 23:15:21,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:21,187 INFO L225 Difference]: With dead ends: 275 [2021-11-20 23:15:21,187 INFO L226 Difference]: Without dead ends: 275 [2021-11-20 23:15:21,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:15:21,188 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 210 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:21,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 204 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:15:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-20 23:15:21,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 272. [2021-11-20 23:15:21,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 194 states have (on average 1.577319587628866) internal successors, (306), 268 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:15:21,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 310 transitions. [2021-11-20 23:15:21,198 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 310 transitions. Word has length 61 [2021-11-20 23:15:21,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:21,198 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 310 transitions. [2021-11-20 23:15:21,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:15:21,198 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 310 transitions. [2021-11-20 23:15:21,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-20 23:15:21,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:21,200 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:21,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:21,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:15:21,419 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:15:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash -311284141, now seen corresponding path program 1 times [2021-11-20 23:15:21,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:15:21,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500723110] [2021-11-20 23:15:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:21,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:15:21,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:15:21,422 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:15:21,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 23:15:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:21,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 23:15:21,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:22,151 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-20 23:15:22,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-20 23:15:22,194 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:15:22,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 40 [2021-11-20 23:15:22,772 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 23:15:22,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2021-11-20 23:15:22,797 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-20 23:15:22,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 50 [2021-11-20 23:15:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:23,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:25,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2021-11-20 23:15:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:25,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:15:25,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500723110] [2021-11-20 23:15:25,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500723110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:25,585 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:25,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-20 23:15:25,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522694229] [2021-11-20 23:15:25,585 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:25,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:15:25,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:15:25,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:15:25,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:25,587 INFO L87 Difference]: Start difference. First operand 272 states and 310 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:28,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:28,635 INFO L93 Difference]: Finished difference Result 275 states and 313 transitions. [2021-11-20 23:15:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:15:28,637 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 61 [2021-11-20 23:15:28,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:28,639 INFO L225 Difference]: With dead ends: 275 [2021-11-20 23:15:28,639 INFO L226 Difference]: Without dead ends: 275 [2021-11-20 23:15:28,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:15:28,641 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 9 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 380 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:28,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1494 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 380 Unchecked, 2.8s Time] [2021-11-20 23:15:28,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-20 23:15:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-11-20 23:15:28,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 197 states have (on average 1.5685279187817258) internal successors, (309), 271 states have internal predecessors, (309), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:15:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 313 transitions. [2021-11-20 23:15:28,649 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 313 transitions. Word has length 61 [2021-11-20 23:15:28,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:28,649 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 313 transitions. [2021-11-20 23:15:28,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:28,650 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 313 transitions. [2021-11-20 23:15:28,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 23:15:28,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:28,651 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:28,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:28,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:15:28,883 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:15:28,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:28,884 INFO L85 PathProgramCache]: Analyzing trace with hash -631451440, now seen corresponding path program 1 times [2021-11-20 23:15:28,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:15:28,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510965542] [2021-11-20 23:15:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:28,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:15:28,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:15:28,886 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:15:28,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 23:15:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:29,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:15:29,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:29,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:15:29,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:15:29,642 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-11-20 23:15:29,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 37 [2021-11-20 23:15:29,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 18 [2021-11-20 23:15:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:29,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:31,930 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) |c_ULTIMATE.start_main_#t~mem125#1.base|)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|))))))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 23:15:33,960 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse1 (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 23:15:34,085 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:15:34,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:15:34,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510965542] [2021-11-20 23:15:34,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510965542] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:34,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:34,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-20 23:15:34,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929944306] [2021-11-20 23:15:34,086 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:34,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:15:34,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:15:34,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:15:34,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=65, Unknown=2, NotChecked=34, Total=132 [2021-11-20 23:15:34,086 INFO L87 Difference]: Start difference. First operand 275 states and 313 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:15:52,602 WARN L227 SmtUtils]: Spent 16.21s on a formula simplification. DAG size of input: 56 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:16:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:02,126 INFO L93 Difference]: Finished difference Result 273 states and 310 transitions. [2021-11-20 23:16:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:16:02,127 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-20 23:16:02,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:02,128 INFO L225 Difference]: With dead ends: 273 [2021-11-20 23:16:02,128 INFO L226 Difference]: Without dead ends: 273 [2021-11-20 23:16:02,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 114 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=51, Invalid=108, Unknown=5, NotChecked=46, Total=210 [2021-11-20 23:16:02,130 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 239 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 475 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:02,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1055 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 450 Invalid, 0 Unknown, 475 Unchecked, 1.6s Time] [2021-11-20 23:16:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-20 23:16:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-11-20 23:16:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 197 states have (on average 1.5532994923857868) internal successors, (306), 269 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:16:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 310 transitions. [2021-11-20 23:16:02,139 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 310 transitions. Word has length 64 [2021-11-20 23:16:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:02,140 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 310 transitions. [2021-11-20 23:16:02,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:16:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 310 transitions. [2021-11-20 23:16:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 23:16:02,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:02,141 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:02,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 23:16:02,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:16:02,360 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:16:02,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:02,360 INFO L85 PathProgramCache]: Analyzing trace with hash -631451439, now seen corresponding path program 1 times [2021-11-20 23:16:02,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:16:02,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437223099] [2021-11-20 23:16:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:02,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:16:02,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:16:02,363 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:16:02,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 23:16:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:02,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 23:16:02,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:02,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-11-20 23:16:02,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:16:02,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-20 23:16:02,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 23:16:03,154 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-20 23:16:03,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 62 [2021-11-20 23:16:03,207 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-20 23:16:03,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-20 23:16:03,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 33 [2021-11-20 23:16:03,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2021-11-20 23:16:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:16:03,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:15,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:15,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:16:15,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:16:15,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437223099] [2021-11-20 23:16:15,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437223099] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:15,519 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:15,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 23:16:15,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389955522] [2021-11-20 23:16:15,519 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:15,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:16:15,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:16:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:16:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2021-11-20 23:16:15,520 INFO L87 Difference]: Start difference. First operand 273 states and 310 transitions. Second operand has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:16:19,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:19,707 INFO L93 Difference]: Finished difference Result 272 states and 309 transitions. [2021-11-20 23:16:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:16:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-20 23:16:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:19,712 INFO L225 Difference]: With dead ends: 272 [2021-11-20 23:16:19,712 INFO L226 Difference]: Without dead ends: 272 [2021-11-20 23:16:19,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=54, Invalid=126, Unknown=2, NotChecked=0, Total=182 [2021-11-20 23:16:19,713 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 236 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:19,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 1190 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 434 Invalid, 0 Unknown, 80 Unchecked, 3.9s Time] [2021-11-20 23:16:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-20 23:16:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-20 23:16:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 197 states have (on average 1.5482233502538072) internal successors, (305), 268 states have internal predecessors, (305), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:16:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 309 transitions. [2021-11-20 23:16:19,721 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 309 transitions. Word has length 64 [2021-11-20 23:16:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:19,722 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 309 transitions. [2021-11-20 23:16:19,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:16:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 309 transitions. [2021-11-20 23:16:19,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 23:16:19,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:19,723 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:19,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-20 23:16:19,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:16:19,938 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:16:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:19,939 INFO L85 PathProgramCache]: Analyzing trace with hash -889593477, now seen corresponding path program 1 times [2021-11-20 23:16:19,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:16:19,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427074572] [2021-11-20 23:16:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:19,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:16:19,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:16:19,942 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:16:19,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 23:16:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:20,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 23:16:20,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:20,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-20 23:16:20,607 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 23:16:20,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-20 23:16:20,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-20 23:16:20,955 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-20 23:16:20,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2021-11-20 23:16:21,213 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-20 23:16:21,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 48 [2021-11-20 23:16:21,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2021-11-20 23:16:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:16:21,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:34,912 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))))))) (_ bv1 1)))) is different from false [2021-11-20 23:16:36,980 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem125#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse3 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse3 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse3 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem125#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_1)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 23:16:41,397 INFO L354 Elim1Store]: treesize reduction 9, result has 81.6 percent of original size [2021-11-20 23:16:41,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 114 [2021-11-20 23:16:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:16:41,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:16:41,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427074572] [2021-11-20 23:16:41,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427074572] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:41,903 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:41,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 15 [2021-11-20 23:16:41,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038798522] [2021-11-20 23:16:41,903 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:41,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:16:41,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:16:41,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:16:41,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=137, Unknown=7, NotChecked=50, Total=240 [2021-11-20 23:16:41,904 INFO L87 Difference]: Start difference. First operand 272 states and 309 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:16:45,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:45,444 INFO L93 Difference]: Finished difference Result 289 states and 325 transitions. [2021-11-20 23:16:45,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:16:45,446 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-11-20 23:16:45,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:45,447 INFO L225 Difference]: With dead ends: 289 [2021-11-20 23:16:45,447 INFO L226 Difference]: Without dead ends: 289 [2021-11-20 23:16:45,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=83, Invalid=224, Unknown=7, NotChecked=66, Total=380 [2021-11-20 23:16:45,451 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 262 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 734 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:45,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 1195 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 474 Invalid, 0 Unknown, 734 Unchecked, 2.4s Time] [2021-11-20 23:16:45,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-20 23:16:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 278. [2021-11-20 23:16:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 203 states have (on average 1.5467980295566504) internal successors, (314), 274 states have internal predecessors, (314), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:16:45,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 318 transitions. [2021-11-20 23:16:45,463 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 318 transitions. Word has length 68 [2021-11-20 23:16:45,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:45,464 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 318 transitions. [2021-11-20 23:16:45,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:16:45,464 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 318 transitions. [2021-11-20 23:16:45,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 23:16:45,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:45,465 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:45,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-20 23:16:45,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:16:45,680 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:16:45,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:45,681 INFO L85 PathProgramCache]: Analyzing trace with hash -889593476, now seen corresponding path program 1 times [2021-11-20 23:16:45,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:16:45,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132067537] [2021-11-20 23:16:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:45,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:16:45,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:16:45,682 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:16:45,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 23:16:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:46,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 23:16:46,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:46,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-20 23:16:46,358 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:16:46,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-20 23:16:46,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:16:46,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-20 23:16:46,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 23:16:46,737 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-20 23:16:46,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 75 [2021-11-20 23:16:46,816 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-20 23:16:46,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 50 [2021-11-20 23:16:47,188 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-20 23:16:47,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 71 [2021-11-20 23:16:47,246 INFO L354 Elim1Store]: treesize reduction 77, result has 13.5 percent of original size [2021-11-20 23:16:47,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 43 [2021-11-20 23:16:47,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 37 [2021-11-20 23:16:47,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-11-20 23:16:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:16:47,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:50,713 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse0 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|)) (.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base|) .cse0 v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base|) .cse0 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))) (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse2 ((_ sign_extend 32) (_ bv0 32))) (.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|)))) (bvule (bvadd .cse2 .cse3) (bvadd .cse2 (_ bv1 64) .cse3))))) is different from false [2021-11-20 23:16:52,849 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (let ((.cse3 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_3))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)) (.cse5 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (select (select (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) .cse5 v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) .cse5 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))))))) is different from false [2021-11-20 23:16:55,079 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem125#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem125#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (let ((.cse6 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse5 (bvadd .cse6 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse4 (bvadd .cse6 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse4 |ULTIMATE.start_main_#t~mem125#1.offset|))) (.cse3 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse4 |ULTIMATE.start_main_#t~mem125#1.base|)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5))) (store .cse2 .cse3 (store (select .cse2 .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_3)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5))))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((|ULTIMATE.start_main_#t~mem125#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem125#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse13 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse10 (bvadd .cse13 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse10 |ULTIMATE.start_main_#t~mem125#1.base|))) (.cse11 (bvadd .cse13 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse8 (select (select .cse12 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11)) (.cse9 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (_ bv1 64) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse10 |ULTIMATE.start_main_#t~mem125#1.offset|)))) (store .cse7 .cse8 (store (select .cse7 .cse8) .cse9 v_DerPreprocessor_3))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11)) (select |c_#length| (select (select (store .cse12 .cse8 (store (select .cse12 .cse8) .cse9 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11))))))))) is different from false [2021-11-20 23:16:56,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:56,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:56,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:56,784 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 23:16:56,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-20 23:16:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-20 23:16:56,854 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:16:56,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132067537] [2021-11-20 23:16:56,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132067537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:56,855 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:56,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 17 [2021-11-20 23:16:56,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108956933] [2021-11-20 23:16:56,855 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:56,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:16:56,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:16:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:16:56,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=171, Unknown=3, NotChecked=84, Total=306 [2021-11-20 23:16:56,856 INFO L87 Difference]: Start difference. First operand 278 states and 318 transitions. Second operand has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:17:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:14,393 INFO L93 Difference]: Finished difference Result 286 states and 326 transitions. [2021-11-20 23:17:14,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:17:14,394 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-11-20 23:17:14,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:14,396 INFO L225 Difference]: With dead ends: 286 [2021-11-20 23:17:14,396 INFO L226 Difference]: Without dead ends: 286 [2021-11-20 23:17:14,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=94, Invalid=335, Unknown=3, NotChecked=120, Total=552 [2021-11-20 23:17:14,397 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 261 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 810 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:14,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 1387 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 559 Invalid, 0 Unknown, 810 Unchecked, 8.5s Time] [2021-11-20 23:17:14,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-20 23:17:14,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2021-11-20 23:17:14,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 210 states have (on average 1.5285714285714285) internal successors, (321), 281 states have internal predecessors, (321), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:17:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 325 transitions. [2021-11-20 23:17:14,406 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 325 transitions. Word has length 68 [2021-11-20 23:17:14,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:14,406 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 325 transitions. [2021-11-20 23:17:14,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:17:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 325 transitions. [2021-11-20 23:17:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 23:17:14,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:14,408 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:14,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-20 23:17:14,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:17:14,628 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-20 23:17:14,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:14,629 INFO L85 PathProgramCache]: Analyzing trace with hash -269261804, now seen corresponding path program 1 times [2021-11-20 23:17:14,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:17:14,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623121644] [2021-11-20 23:17:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:14,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:17:14,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:17:14,630 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:17:14,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62716f3c-59a8-4a10-834b-b2414baf6a8c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 23:17:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:15,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:17:15,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:15,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-20 23:17:15,310 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 23:17:15,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-20 23:17:15,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-20 23:17:15,623 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-20 23:17:15,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 45 [2021-11-20 23:17:15,860 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-20 23:17:15,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 49 [2021-11-20 23:17:16,165 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-20 23:17:16,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 49 [2021-11-20 23:17:16,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2021-11-20 23:17:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-20 23:17:16,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:32,674 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_5)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem128#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-11-20 23:17:34,739 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_5))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem128#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))) (_ bv1 1)))) is different from false [2021-11-20 23:17:36,840 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem125#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem125#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_5)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem128#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))))))) (_ bv1 1)))) is different from false