./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:05:55,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:05:55,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:05:55,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:05:55,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:05:55,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:05:55,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:05:55,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:05:55,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:05:55,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:05:55,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:05:55,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:05:55,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:05:55,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:05:55,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:05:55,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:05:55,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:05:55,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:05:55,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:05:55,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:05:55,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:05:55,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:05:55,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:05:55,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:05:55,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:05:55,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:05:55,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:05:55,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:05:55,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:05:55,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:05:55,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:05:55,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:05:55,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:05:55,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:05:55,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:05:55,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:05:55,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:05:55,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:05:55,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:05:55,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:05:55,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:05:55,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:05:55,565 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:05:55,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:05:55,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:05:55,567 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:05:55,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:05:55,567 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:05:55,567 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:05:55,567 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:05:55,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:05:55,568 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:05:55,574 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:05:55,575 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:05:55,575 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:05:55,575 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:05:55,575 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:05:55,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:05:55,576 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:05:55,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:05:55,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:05:55,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:05:55,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:05:55,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:05:55,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:05:55,578 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:05:55,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:05:55,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:05:55,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:05:55,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:05:55,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:05:55,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:05:55,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:05:55,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:05:55,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:05:55,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:05:55,581 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:05:55,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:05:55,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:05:55,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:05:55,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:05:55,582 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_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 [2021-11-03 05:05:55,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:05:55,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:05:55,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:05:55,850 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:05:55,850 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:05:55,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2021-11-03 05:05:55,911 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/data/9ce8cd7f2/51549bbe85114b03aca6f7445cb5723b/FLAG03c479b20 [2021-11-03 05:05:56,521 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:05:56,522 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2021-11-03 05:05:56,542 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/data/9ce8cd7f2/51549bbe85114b03aca6f7445cb5723b/FLAG03c479b20 [2021-11-03 05:05:56,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/data/9ce8cd7f2/51549bbe85114b03aca6f7445cb5723b [2021-11-03 05:05:56,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:05:56,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:05:56,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:05:56,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:05:56,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:05:56,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:05:56" (1/1) ... [2021-11-03 05:05:56,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3370759d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:56, skipping insertion in model container [2021-11-03 05:05:56,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:05:56" (1/1) ... [2021-11-03 05:05:56,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:05:56,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:05:57,312 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44118,44131] [2021-11-03 05:05:57,323 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44660,44673] [2021-11-03 05:05:57,412 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56247,56260] [2021-11-03 05:05:57,413 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56368,56381] [2021-11-03 05:05:57,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:05:57,430 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 05:05:57,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2f530307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:57, skipping insertion in model container [2021-11-03 05:05:57,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:05:57,431 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:05:57,433 INFO L168 Benchmark]: Toolchain (without parser) took 701.39 ms. Allocated memory is still 130.0 MB. Free memory was 88.8 MB in the beginning and 91.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:05:57,433 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 130.0 MB. Free memory was 108.1 MB in the beginning and 108.1 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:05:57,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.00 ms. Allocated memory is still 130.0 MB. Free memory was 88.6 MB in the beginning and 91.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:05:57,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 130.0 MB. Free memory was 108.1 MB in the beginning and 108.1 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 699.00 ms. Allocated memory is still 130.0 MB. Free memory was 88.6 MB in the beginning and 91.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:05:59,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:05:59,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:05:59,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:05:59,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:05:59,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:05:59,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:05:59,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:05:59,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:05:59,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:05:59,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:05:59,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:05:59,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:05:59,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:05:59,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:05:59,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:05:59,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:05:59,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:05:59,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:05:59,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:05:59,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:05:59,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:05:59,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:05:59,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:05:59,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:05:59,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:05:59,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:05:59,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:05:59,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:05:59,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:05:59,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:05:59,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:05:59,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:05:59,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:05:59,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:05:59,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:05:59,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:05:59,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:05:59,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:05:59,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:05:59,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:05:59,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:05:59,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:05:59,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:05:59,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:05:59,549 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:05:59,549 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:05:59,550 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:05:59,550 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:05:59,550 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:05:59,551 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:05:59,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:05:59,552 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:05:59,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:05:59,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:05:59,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:05:59,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:05:59,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:05:59,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:05:59,560 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:05:59,560 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:05:59,561 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:05:59,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:05:59,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:05:59,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:05:59,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:05:59,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:05:59,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:05:59,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:05:59,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:05:59,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:05:59,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:05:59,564 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:05:59,565 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:05:59,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:05:59,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:05:59,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:05:59,566 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_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 [2021-11-03 05:05:59,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:05:59,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:05:59,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:05:59,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:05:59,969 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:05:59,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2021-11-03 05:06:00,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/data/4d8f2a3f0/64d65588c0414f0891ae9c490afebb83/FLAG04ba5d5b4 [2021-11-03 05:06:00,670 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:06:00,671 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2021-11-03 05:06:00,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/data/4d8f2a3f0/64d65588c0414f0891ae9c490afebb83/FLAG04ba5d5b4 [2021-11-03 05:06:00,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/data/4d8f2a3f0/64d65588c0414f0891ae9c490afebb83 [2021-11-03 05:06:00,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:06:00,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:06:00,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:06:00,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:06:00,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:06:00,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:06:00" (1/1) ... [2021-11-03 05:06:00,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71985e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:00, skipping insertion in model container [2021-11-03 05:06:00,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:06:00" (1/1) ... [2021-11-03 05:06:00,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:06:00,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:06:01,593 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44118,44131] [2021-11-03 05:06:01,603 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44660,44673] [2021-11-03 05:06:01,731 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56247,56260] [2021-11-03 05:06:01,733 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56368,56381] [2021-11-03 05:06:01,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:06:01,768 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:06:01,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:06:01,810 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44118,44131] [2021-11-03 05:06:01,813 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44660,44673] [2021-11-03 05:06:01,924 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56247,56260] [2021-11-03 05:06:01,924 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56368,56381] [2021-11-03 05:06:01,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:06:01,948 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:06:01,976 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44118,44131] [2021-11-03 05:06:01,978 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44660,44673] [2021-11-03 05:06:02,052 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56247,56260] [2021-11-03 05:06:02,053 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56368,56381] [2021-11-03 05:06:02,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:06:02,131 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:06:02,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02 WrapperNode [2021-11-03 05:06:02,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:06:02,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:06:02,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:06:02,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:06:02,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02" (1/1) ... [2021-11-03 05:06:02,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02" (1/1) ... [2021-11-03 05:06:02,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:06:02,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:06:02,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:06:02,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:06:02,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02" (1/1) ... [2021-11-03 05:06:02,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02" (1/1) ... [2021-11-03 05:06:02,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02" (1/1) ... [2021-11-03 05:06:02,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02" (1/1) ... [2021-11-03 05:06:02,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02" (1/1) ... [2021-11-03 05:06:02,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02" (1/1) ... [2021-11-03 05:06:02,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02" (1/1) ... [2021-11-03 05:06:02,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:06:02,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:06:02,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:06:02,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:06:02,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02" (1/1) ... [2021-11-03 05:06:02,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:06:02,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:06:02,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:06:02,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:06:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:06:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:06:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:06:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:06:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:06:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:06:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:06:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:06:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:06:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:06:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:06:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:06:08,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:06:08,781 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-03 05:06:08,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:06:08 BoogieIcfgContainer [2021-11-03 05:06:08,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:06:08,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:06:08,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:06:08,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:06:08,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:06:00" (1/3) ... [2021-11-03 05:06:08,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19592808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:06:08, skipping insertion in model container [2021-11-03 05:06:08,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:06:02" (2/3) ... [2021-11-03 05:06:08,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19592808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:06:08, skipping insertion in model container [2021-11-03 05:06:08,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:06:08" (3/3) ... [2021-11-03 05:06:08,799 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-1.i [2021-11-03 05:06:08,804 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:06:08,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-03 05:06:08,852 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:06:08,858 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:06:08,858 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-03 05:06:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:08,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 05:06:08,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:08,884 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:08,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:06:08,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:08,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-03 05:06:08,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:08,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114672180] [2021-11-03 05:06:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:08,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:08,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:08,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:08,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:06:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:09,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:06:09,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:09,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:09,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:09,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114672180] [2021-11-03 05:06:09,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114672180] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:09,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:09,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:06:09,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848075008] [2021-11-03 05:06:09,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:06:09,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:09,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:06:09,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:06:09,214 INFO L87 Difference]: Start difference. First operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:09,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:09,280 INFO L93 Difference]: Finished difference Result 466 states and 739 transitions. [2021-11-03 05:06:09,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:06:09,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-03 05:06:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:09,299 INFO L225 Difference]: With dead ends: 466 [2021-11-03 05:06:09,300 INFO L226 Difference]: Without dead ends: 227 [2021-11-03 05:06:09,303 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:06:09,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-03 05:06:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-03 05:06:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 216 states have (on average 1.3194444444444444) internal successors, (285), 226 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 285 transitions. [2021-11-03 05:06:09,353 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 285 transitions. Word has length 8 [2021-11-03 05:06:09,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:09,353 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 285 transitions. [2021-11-03 05:06:09,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:09,354 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 285 transitions. [2021-11-03 05:06:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 05:06:09,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:09,355 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:09,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:09,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:06:09,565 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:06:09,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:09,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-03 05:06:09,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:09,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474855090] [2021-11-03 05:06:09,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:09,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:09,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:09,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:09,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:06:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:09,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:06:09,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:09,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:09,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:09,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474855090] [2021-11-03 05:06:09,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474855090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:09,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:09,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:06:09,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387985659] [2021-11-03 05:06:09,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:06:09,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:09,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:06:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:06:09,973 INFO L87 Difference]: Start difference. First operand 227 states and 285 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:14,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:14,632 INFO L93 Difference]: Finished difference Result 583 states and 735 transitions. [2021-11-03 05:06:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:06:14,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-03 05:06:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:14,636 INFO L225 Difference]: With dead ends: 583 [2021-11-03 05:06:14,636 INFO L226 Difference]: Without dead ends: 358 [2021-11-03 05:06:14,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:06:14,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-03 05:06:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 333. [2021-11-03 05:06:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 322 states have (on average 1.3229813664596273) internal successors, (426), 332 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 426 transitions. [2021-11-03 05:06:14,664 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 426 transitions. Word has length 10 [2021-11-03 05:06:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:14,664 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 426 transitions. [2021-11-03 05:06:14,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:14,664 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 426 transitions. [2021-11-03 05:06:14,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 05:06:14,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:14,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:14,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 05:06:14,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:06:14,881 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:06:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash -315185698, now seen corresponding path program 1 times [2021-11-03 05:06:14,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:14,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362980343] [2021-11-03 05:06:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:14,883 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:14,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:14,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:14,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:06:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:15,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:06:15,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:15,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:06:15,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:06:15,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:06:15,201 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 05:06:15,201 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 05:06:15,281 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 05:06:15,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 67 treesize of output 23 [2021-11-03 05:06:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:15,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:15,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:15,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362980343] [2021-11-03 05:06:15,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362980343] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:15,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:15,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:06:15,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383166865] [2021-11-03 05:06:15,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:06:15,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:15,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:06:15,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:06:15,417 INFO L87 Difference]: Start difference. First operand 333 states and 426 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:22,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:22,441 INFO L93 Difference]: Finished difference Result 700 states and 888 transitions. [2021-11-03 05:06:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:06:22,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 12 [2021-11-03 05:06:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:22,445 INFO L225 Difference]: With dead ends: 700 [2021-11-03 05:06:22,445 INFO L226 Difference]: Without dead ends: 526 [2021-11-03 05:06:22,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:06:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-03 05:06:22,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 332. [2021-11-03 05:06:22,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 321 states have (on average 1.320872274143302) internal successors, (424), 331 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 424 transitions. [2021-11-03 05:06:22,470 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 424 transitions. Word has length 12 [2021-11-03 05:06:22,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:22,470 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 424 transitions. [2021-11-03 05:06:22,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 424 transitions. [2021-11-03 05:06:22,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:06:22,472 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:22,472 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:22,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 05:06:22,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:06:22,686 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:06:22,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:22,687 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-03 05:06:22,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:22,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252825971] [2021-11-03 05:06:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:22,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:22,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:22,689 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:22,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:06:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:22,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:06:22,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:23,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:23,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:23,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252825971] [2021-11-03 05:06:23,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252825971] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:23,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:23,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:06:23,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005587883] [2021-11-03 05:06:23,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:06:23,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:23,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:06:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:06:23,221 INFO L87 Difference]: Start difference. First operand 332 states and 424 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:23,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:23,329 INFO L93 Difference]: Finished difference Result 662 states and 852 transitions. [2021-11-03 05:06:23,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:06:23,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 44 [2021-11-03 05:06:23,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:23,332 INFO L225 Difference]: With dead ends: 662 [2021-11-03 05:06:23,333 INFO L226 Difference]: Without dead ends: 340 [2021-11-03 05:06:23,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:06:23,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-03 05:06:23,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2021-11-03 05:06:23,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 327 states have (on average 1.2660550458715596) internal successors, (414), 337 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 414 transitions. [2021-11-03 05:06:23,350 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 414 transitions. Word has length 44 [2021-11-03 05:06:23,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:23,350 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 414 transitions. [2021-11-03 05:06:23,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:23,351 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 414 transitions. [2021-11-03 05:06:23,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:06:23,352 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:23,353 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:23,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:23,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:06:23,567 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:06:23,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:23,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-03 05:06:23,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:23,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517849063] [2021-11-03 05:06:23,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:23,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:23,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:23,570 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:23,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:06:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:23,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:06:23,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:23,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:24,067 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:24,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517849063] [2021-11-03 05:06:24,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517849063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:24,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:24,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:06:24,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254258399] [2021-11-03 05:06:24,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:06:24,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:24,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:06:24,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:06:24,072 INFO L87 Difference]: Start difference. First operand 338 states and 414 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:30,430 INFO L93 Difference]: Finished difference Result 882 states and 1104 transitions. [2021-11-03 05:06:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:06:30,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 44 [2021-11-03 05:06:30,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:30,452 INFO L225 Difference]: With dead ends: 882 [2021-11-03 05:06:30,452 INFO L226 Difference]: Without dead ends: 880 [2021-11-03 05:06:30,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:06:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-11-03 05:06:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 336. [2021-11-03 05:06:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 326 states have (on average 1.2638036809815951) internal successors, (412), 335 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 412 transitions. [2021-11-03 05:06:30,472 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 412 transitions. Word has length 44 [2021-11-03 05:06:30,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:30,473 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 412 transitions. [2021-11-03 05:06:30,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:30,473 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 412 transitions. [2021-11-03 05:06:30,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:06:30,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:30,475 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:30,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:30,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:06:30,689 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:06:30,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:30,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-03 05:06:30,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:30,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363617583] [2021-11-03 05:06:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:30,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:30,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:30,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:30,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:06:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:31,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:06:31,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:31,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:31,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:31,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363617583] [2021-11-03 05:06:31,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363617583] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:31,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:31,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:06:31,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337736326] [2021-11-03 05:06:31,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:06:31,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:31,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:06:31,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:06:31,430 INFO L87 Difference]: Start difference. First operand 336 states and 412 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:34,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:34,040 INFO L93 Difference]: Finished difference Result 1128 states and 1405 transitions. [2021-11-03 05:06:34,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:06:34,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 05:06:34,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:34,046 INFO L225 Difference]: With dead ends: 1128 [2021-11-03 05:06:34,046 INFO L226 Difference]: Without dead ends: 838 [2021-11-03 05:06:34,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:06:34,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-11-03 05:06:34,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 428. [2021-11-03 05:06:34,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 418 states have (on average 1.2511961722488039) internal successors, (523), 427 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 523 transitions. [2021-11-03 05:06:34,077 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 523 transitions. Word has length 51 [2021-11-03 05:06:34,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:34,077 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 523 transitions. [2021-11-03 05:06:34,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:34,078 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 523 transitions. [2021-11-03 05:06:34,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 05:06:34,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:34,079 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:34,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:34,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:06:34,298 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:06:34,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:34,298 INFO L85 PathProgramCache]: Analyzing trace with hash 493379014, now seen corresponding path program 1 times [2021-11-03 05:06:34,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:34,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674934422] [2021-11-03 05:06:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:34,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:34,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:34,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:34,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:06:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:34,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:06:34,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:34,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:34,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:34,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674934422] [2021-11-03 05:06:34,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674934422] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:34,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:34,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:06:34,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479197383] [2021-11-03 05:06:34,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:06:34,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:06:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:06:34,902 INFO L87 Difference]: Start difference. First operand 428 states and 523 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:34,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:34,985 INFO L93 Difference]: Finished difference Result 813 states and 1002 transitions. [2021-11-03 05:06:34,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:06:34,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 05:06:34,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:34,989 INFO L225 Difference]: With dead ends: 813 [2021-11-03 05:06:34,991 INFO L226 Difference]: Without dead ends: 431 [2021-11-03 05:06:34,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:06:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-03 05:06:35,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2021-11-03 05:06:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 421 states have (on average 1.2494061757719714) internal successors, (526), 430 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:35,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 526 transitions. [2021-11-03 05:06:35,018 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 526 transitions. Word has length 52 [2021-11-03 05:06:35,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:35,018 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 526 transitions. [2021-11-03 05:06:35,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 526 transitions. [2021-11-03 05:06:35,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 05:06:35,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:35,022 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:35,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:35,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:06:35,233 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:06:35,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1169148346, now seen corresponding path program 1 times [2021-11-03 05:06:35,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:35,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476617914] [2021-11-03 05:06:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:35,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:35,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:35,236 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:35,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:06:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:35,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:06:35,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:35,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:35,972 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:35,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476617914] [2021-11-03 05:06:35,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476617914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:06:35,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1731854550] [2021-11-03 05:06:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:35,973 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:06:35,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:06:35,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:06:35,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 05:06:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:36,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:06:36,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:06:36,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:06:36,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1731854550] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:36,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:06:36,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 14 [2021-11-03 05:06:36,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953985236] [2021-11-03 05:06:36,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:06:36,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:36,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:06:36,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:06:36,931 INFO L87 Difference]: Start difference. First operand 431 states and 526 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:42,438 INFO L93 Difference]: Finished difference Result 2564 states and 3218 transitions. [2021-11-03 05:06:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:06:42,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 05:06:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:42,451 INFO L225 Difference]: With dead ends: 2564 [2021-11-03 05:06:42,451 INFO L226 Difference]: Without dead ends: 2179 [2021-11-03 05:06:42,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:06:42,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2021-11-03 05:06:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 613. [2021-11-03 05:06:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 603 states have (on average 1.2255389718076286) internal successors, (739), 612 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 739 transitions. [2021-11-03 05:06:42,512 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 739 transitions. Word has length 54 [2021-11-03 05:06:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:42,512 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 739 transitions. [2021-11-03 05:06:42,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 739 transitions. [2021-11-03 05:06:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 05:06:42,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:42,517 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:42,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:42,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:42,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:06:42,937 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:06:42,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:42,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1213483017, now seen corresponding path program 1 times [2021-11-03 05:06:42,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:42,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687322431] [2021-11-03 05:06:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:42,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:42,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:42,940 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:42,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:06:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:43,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:06:43,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:06:43,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:06:44,101 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:44,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687322431] [2021-11-03 05:06:44,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687322431] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:06:44,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1449238570] [2021-11-03 05:06:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:44,102 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:06:44,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:06:44,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:06:44,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 05:06:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:44,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:06:44,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:06:45,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:06:45,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1449238570] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:06:45,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394202163] [2021-11-03 05:06:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:45,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:06:45,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:06:45,225 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:06:45,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 05:06:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:45,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:06:45,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:45,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:06:45,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:06:45,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:06:46,046 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 05:06:46,046 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 05:06:46,146 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 05:06:46,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 67 treesize of output 23 [2021-11-03 05:06:46,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:06:46,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:06:46,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394202163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:46,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 05:06:46,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-03 05:06:46,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124552768] [2021-11-03 05:06:46,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:06:46,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:46,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:06:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:06:46,392 INFO L87 Difference]: Start difference. First operand 613 states and 739 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:56,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:56,591 INFO L93 Difference]: Finished difference Result 795 states and 968 transitions. [2021-11-03 05:06:56,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:06:56,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 05:06:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:56,597 INFO L225 Difference]: With dead ends: 795 [2021-11-03 05:06:56,597 INFO L226 Difference]: Without dead ends: 777 [2021-11-03 05:06:56,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:06:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-11-03 05:06:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 691. [2021-11-03 05:06:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 681 states have (on average 1.2393538913362703) internal successors, (844), 690 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 844 transitions. [2021-11-03 05:06:56,641 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 844 transitions. Word has length 82 [2021-11-03 05:06:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:56,642 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 844 transitions. [2021-11-03 05:06:56,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 844 transitions. [2021-11-03 05:06:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 05:06:56,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:56,644 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:56,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:56,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:57,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:57,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:06:57,269 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:06:57,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:57,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1602172737, now seen corresponding path program 1 times [2021-11-03 05:06:57,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:57,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420246908] [2021-11-03 05:06:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:57,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:57,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:57,272 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:57,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:06:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:57,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:06:57,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:06:58,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:06:58,366 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:58,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420246908] [2021-11-03 05:06:58,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420246908] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:06:58,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1213119350] [2021-11-03 05:06:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:58,366 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:06:58,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:06:58,367 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:06:58,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:06:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:59,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:06:59,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:06:59,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:06:59,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1213119350] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:06:59,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753264485] [2021-11-03 05:06:59,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:59,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:06:59,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:06:59,651 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:06:59,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 05:07:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:00,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:07:00,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:07:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:07:00,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:07:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:07:00,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753264485] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:07:00,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:07:00,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 05:07:00,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690670644] [2021-11-03 05:07:00,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:07:00,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:07:00,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:07:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:07:00,713 INFO L87 Difference]: Start difference. First operand 691 states and 844 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:01,149 INFO L93 Difference]: Finished difference Result 1356 states and 1678 transitions. [2021-11-03 05:07:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:07:01,150 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-03 05:07:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:01,154 INFO L225 Difference]: With dead ends: 1356 [2021-11-03 05:07:01,154 INFO L226 Difference]: Without dead ends: 711 [2021-11-03 05:07:01,155 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:07:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-11-03 05:07:01,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2021-11-03 05:07:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 701 states have (on average 1.2325249643366618) internal successors, (864), 710 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:01,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 864 transitions. [2021-11-03 05:07:01,205 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 864 transitions. Word has length 84 [2021-11-03 05:07:01,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:01,205 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 864 transitions. [2021-11-03 05:07:01,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:01,206 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 864 transitions. [2021-11-03 05:07:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 05:07:01,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:01,207 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:07:01,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:07:01,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:07:01,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:07:01,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:07:01,827 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:07:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:01,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1971016961, now seen corresponding path program 2 times [2021-11-03 05:07:01,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:07:01,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099728259] [2021-11-03 05:07:01,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:07:01,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:07:01,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:07:01,837 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:07:01,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 05:07:09,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:07:09,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:07:09,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 05:07:09,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:07:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:07:09,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:07:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:07:10,263 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:07:10,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099728259] [2021-11-03 05:07:10,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099728259] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:07:10,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1109465025] [2021-11-03 05:07:10,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:07:10,263 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:07:10,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:07:10,264 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:07:10,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 05:08:27,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:08:27,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:08:27,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 05:08:27,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:08:28,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:08:28,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1109465025] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:08:28,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137261581] [2021-11-03 05:08:28,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:08:28,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:08:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:08:28,291 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:08:28,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba2d3a4-bd63-4453-a970-cc369e191d76/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process