./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF --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 8c6f82e874e2f980b653c53fa0437dd3390b1771d726d8f345336fe56afb2bb6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:18:46,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:18:46,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:18:46,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:18:46,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:18:46,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:18:46,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:18:46,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:18:46,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:18:46,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:18:46,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:18:46,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:18:46,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:18:46,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:18:46,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:18:46,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:18:46,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:18:46,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:18:46,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:18:46,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:18:46,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:18:46,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:18:46,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:18:46,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:18:46,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:18:46,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:18:46,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:18:46,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:18:46,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:18:46,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:18:46,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:18:46,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:18:46,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:18:46,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:18:46,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:18:46,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:18:46,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:18:46,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:18:46,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:18:46,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:18:46,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:18:46,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:18:46,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:18:46,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:18:46,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:18:46,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:18:46,556 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:18:46,556 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:18:46,556 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:18:46,557 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:18:46,557 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:18:46,557 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:18:46,558 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:18:46,558 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:18:46,558 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:18:46,558 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:18:46,559 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:18:46,559 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:18:46,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:18:46,560 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:18:46,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:18:46,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:18:46,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:18:46,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:18:46,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:18:46,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:18:46,562 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:18:46,562 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:18:46,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:18:46,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:18:46,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:18:46,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:18:46,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:18:46,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:18:46,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:18:46,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:18:46,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:18:46,566 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:18:46,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:18:46,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:18:46,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:18:46,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:18:46,567 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_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c6f82e874e2f980b653c53fa0437dd3390b1771d726d8f345336fe56afb2bb6 [2021-11-12 22:18:46,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:18:46,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:18:46,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:18:46,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:18:46,840 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:18:46,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c [2021-11-12 22:18:46,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/data/06063a87c/e36bf667839a4e40983fc6e23e90c2b3/FLAG5db3d4c9e [2021-11-12 22:18:47,473 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:18:47,474 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c [2021-11-12 22:18:47,497 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/data/06063a87c/e36bf667839a4e40983fc6e23e90c2b3/FLAG5db3d4c9e [2021-11-12 22:18:47,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/data/06063a87c/e36bf667839a4e40983fc6e23e90c2b3 [2021-11-12 22:18:47,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:18:47,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:18:47,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:18:47,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:18:47,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:18:47,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:18:47" (1/1) ... [2021-11-12 22:18:47,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3532699a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:47, skipping insertion in model container [2021-11-12 22:18:47,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:18:47" (1/1) ... [2021-11-12 22:18:47,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:18:47,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:18:48,260 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_77d6237b-9745-4994-8839-41d6d8b59a56/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c[74369,74382] [2021-11-12 22:18:48,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:18:48,284 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) [2021-11-12 22:18:48,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d090e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:48, skipping insertion in model container [2021-11-12 22:18:48,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:18:48,285 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:18:48,287 INFO L158 Benchmark]: Toolchain (without parser) took 578.23ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 50.4MB in the beginning and 79.2MB in the end (delta: -28.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:18:48,288 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory was 59.3MB in the beginning and 59.2MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:18:48,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 575.68ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 50.1MB in the beginning and 79.2MB in the end (delta: -29.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:18:48,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory was 59.3MB in the beginning and 59.2MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 575.68ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 50.1MB in the beginning and 79.2MB in the end (delta: -29.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: 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_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF --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 8c6f82e874e2f980b653c53fa0437dd3390b1771d726d8f345336fe56afb2bb6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:18:50,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:18:50,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:18:50,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:18:50,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:18:50,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:18:50,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:18:50,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:18:50,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:18:50,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:18:50,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:18:50,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:18:50,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:18:50,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:18:50,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:18:50,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:18:50,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:18:50,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:18:50,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:18:50,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:18:50,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:18:50,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:18:50,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:18:50,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:18:50,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:18:50,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:18:50,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:18:50,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:18:50,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:18:50,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:18:50,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:18:50,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:18:50,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:18:50,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:18:50,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:18:50,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:18:50,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:18:50,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:18:50,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:18:50,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:18:50,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:18:50,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:18:50,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:18:50,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:18:50,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:18:50,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:18:50,657 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:18:50,658 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:18:50,658 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:18:50,658 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:18:50,658 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:18:50,659 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:18:50,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:18:50,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:18:50,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:18:50,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:18:50,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:18:50,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:18:50,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:18:50,661 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:18:50,662 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:18:50,662 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:18:50,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:18:50,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:18:50,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:18:50,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:18:50,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:18:50,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:18:50,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:18:50,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:18:50,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:18:50,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:18:50,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:18:50,665 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:18:50,665 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:18:50,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:18:50,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:18:50,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:18:50,666 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_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c6f82e874e2f980b653c53fa0437dd3390b1771d726d8f345336fe56afb2bb6 [2021-11-12 22:18:51,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:18:51,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:18:51,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:18:51,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:18:51,071 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:18:51,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c [2021-11-12 22:18:51,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/data/a426bd8a7/bfb99be855214fefa82fa52c5c6143b4/FLAG3f36e018e [2021-11-12 22:18:51,927 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:18:51,927 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c [2021-11-12 22:18:51,978 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/data/a426bd8a7/bfb99be855214fefa82fa52c5c6143b4/FLAG3f36e018e [2021-11-12 22:18:52,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/data/a426bd8a7/bfb99be855214fefa82fa52c5c6143b4 [2021-11-12 22:18:52,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:18:52,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:18:52,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:18:52,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:18:52,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:18:52,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:18:52" (1/1) ... [2021-11-12 22:18:52,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e38eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:52, skipping insertion in model container [2021-11-12 22:18:52,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:18:52" (1/1) ... [2021-11-12 22:18:52,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:18:52,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:18:52,718 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_77d6237b-9745-4994-8839-41d6d8b59a56/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c[74369,74382] [2021-11-12 22:18:52,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:18:52,763 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:18:52,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:18:52,910 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_77d6237b-9745-4994-8839-41d6d8b59a56/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c[74369,74382] [2021-11-12 22:18:52,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:18:52,920 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:18:53,013 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_77d6237b-9745-4994-8839-41d6d8b59a56/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c[74369,74382] [2021-11-12 22:18:53,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:18:53,052 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:18:53,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53 WrapperNode [2021-11-12 22:18:53,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:18:53,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:18:53,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:18:53,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:18:53,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53" (1/1) ... [2021-11-12 22:18:53,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53" (1/1) ... [2021-11-12 22:18:53,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:18:53,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:18:53,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:18:53,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:18:53,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53" (1/1) ... [2021-11-12 22:18:53,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53" (1/1) ... [2021-11-12 22:18:53,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53" (1/1) ... [2021-11-12 22:18:53,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53" (1/1) ... [2021-11-12 22:18:53,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53" (1/1) ... [2021-11-12 22:18:53,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53" (1/1) ... [2021-11-12 22:18:53,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53" (1/1) ... [2021-11-12 22:18:53,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:18:53,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:18:53,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:18:53,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:18:53,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53" (1/1) ... [2021-11-12 22:18:53,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:18:53,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:18:53,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:18:53,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:18:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:18:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:18:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:18:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:18:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:18:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:18:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:18:53,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:18:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:18:53,679 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 22:19:03,229 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-12 22:19:03,229 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-12 22:19:03,237 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:19:03,238 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:19:03,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:19:03 BoogieIcfgContainer [2021-11-12 22:19:03,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:19:03,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:19:03,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:19:03,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:19:03,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:18:52" (1/3) ... [2021-11-12 22:19:03,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4579ca3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:19:03, skipping insertion in model container [2021-11-12 22:19:03,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:18:53" (2/3) ... [2021-11-12 22:19:03,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4579ca3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:19:03, skipping insertion in model container [2021-11-12 22:19:03,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:19:03" (3/3) ... [2021-11-12 22:19:03,248 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.07.i.cil-2.c [2021-11-12 22:19:03,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:19:03,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:19:03,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:19:03,310 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 [2021-11-12 22:19:03,310 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:19:03,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 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) [2021-11-12 22:19:03,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-12 22:19:03,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:03,338 INFO L514 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] [2021-11-12 22:19:03,339 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:03,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:03,344 INFO L85 PathProgramCache]: Analyzing trace with hash -442385418, now seen corresponding path program 1 times [2021-11-12 22:19:03,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:03,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732804075] [2021-11-12 22:19:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:03,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:03,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:03,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:03,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:19:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:19:03,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:19:03,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:19:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:19:03,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:19:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:19:04,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:19:04,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732804075] [2021-11-12 22:19:04,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732804075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:19:04,077 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:19:04,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:19:04,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887835863] [2021-11-12 22:19:04,080 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:19:04,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:19:04,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:19:04,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:19:04,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:19:04,114 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2021-11-12 22:19:04,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:19:04,320 INFO L93 Difference]: Finished difference Result 566 states and 965 transitions. [2021-11-12 22:19:04,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:19:04,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 37 [2021-11-12 22:19:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:19:04,346 INFO L225 Difference]: With dead ends: 566 [2021-11-12 22:19:04,347 INFO L226 Difference]: Without dead ends: 387 [2021-11-12 22:19:04,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:19:04,356 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 402 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.19ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.41ms IncrementalHoareTripleChecker+Time [2021-11-12 22:19:04,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 670 Invalid, 76 Unknown, 0 Unchecked, 9.19ms Time], IncrementalHoareTripleChecker [26 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 116.41ms Time] [2021-11-12 22:19:04,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-12 22:19:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 385. [2021-11-12 22:19:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.5286458333333333) internal successors, (587), 384 states have internal predecessors, (587), 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) [2021-11-12 22:19:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 587 transitions. [2021-11-12 22:19:04,455 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 587 transitions. Word has length 37 [2021-11-12 22:19:04,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:19:04,456 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 587 transitions. [2021-11-12 22:19:04,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2021-11-12 22:19:04,456 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 587 transitions. [2021-11-12 22:19:04,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-12 22:19:04,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:04,467 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:19:04,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:19:04,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:19:04,681 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:04,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:04,682 INFO L85 PathProgramCache]: Analyzing trace with hash 746604405, now seen corresponding path program 1 times [2021-11-12 22:19:04,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:04,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758136251] [2021-11-12 22:19:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:04,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:04,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:04,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:04,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:19:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:19:04,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:19:04,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:19:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:19:05,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:19:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:19:05,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:19:05,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758136251] [2021-11-12 22:19:05,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758136251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:19:05,400 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:19:05,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:19:05,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702772478] [2021-11-12 22:19:05,401 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:19:05,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:19:05,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:19:05,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:19:05,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:19:05,404 INFO L87 Difference]: Start difference. First operand 385 states and 587 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-11-12 22:19:06,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:19:06,293 INFO L93 Difference]: Finished difference Result 879 states and 1353 transitions. [2021-11-12 22:19:06,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:19:06,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 60 [2021-11-12 22:19:06,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:19:06,299 INFO L225 Difference]: With dead ends: 879 [2021-11-12 22:19:06,299 INFO L226 Difference]: Without dead ends: 628 [2021-11-12 22:19:06,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:19:06,302 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 305 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 826.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.97ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 854.15ms IncrementalHoareTripleChecker+Time [2021-11-12 22:19:06,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 721 Invalid, 76 Unknown, 0 Unchecked, 3.97ms Time], IncrementalHoareTripleChecker [23 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 854.15ms Time] [2021-11-12 22:19:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-12 22:19:06,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 626. [2021-11-12 22:19:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 1.52) internal successors, (950), 625 states have internal predecessors, (950), 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) [2021-11-12 22:19:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 950 transitions. [2021-11-12 22:19:06,342 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 950 transitions. Word has length 60 [2021-11-12 22:19:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:19:06,343 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 950 transitions. [2021-11-12 22:19:06,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-11-12 22:19:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 950 transitions. [2021-11-12 22:19:06,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-12 22:19:06,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:06,348 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:19:06,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:19:06,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:19:06,562 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:06,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1749353389, now seen corresponding path program 1 times [2021-11-12 22:19:06,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:06,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900382433] [2021-11-12 22:19:06,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:06,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:06,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:06,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:06,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:19:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:19:06,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:19:06,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:19:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 22:19:07,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:19:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 22:19:07,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:19:07,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900382433] [2021-11-12 22:19:07,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900382433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:19:07,682 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:19:07,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:19:07,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400003511] [2021-11-12 22:19:07,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:19:07,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:19:07,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:19:07,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:19:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:19:07,684 INFO L87 Difference]: Start difference. First operand 626 states and 950 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2021-11-12 22:19:08,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:19:08,330 INFO L93 Difference]: Finished difference Result 1238 states and 1888 transitions. [2021-11-12 22:19:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:19:08,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 119 [2021-11-12 22:19:08,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:19:08,336 INFO L225 Difference]: With dead ends: 1238 [2021-11-12 22:19:08,337 INFO L226 Difference]: Without dead ends: 746 [2021-11-12 22:19:08,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:19:08,340 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 137 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 598.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 616.65ms IncrementalHoareTripleChecker+Time [2021-11-12 22:19:08,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 569 Invalid, 33 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 616.65ms Time] [2021-11-12 22:19:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-11-12 22:19:08,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2021-11-12 22:19:08,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 1.516778523489933) internal successors, (1130), 745 states have internal predecessors, (1130), 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) [2021-11-12 22:19:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1130 transitions. [2021-11-12 22:19:08,374 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1130 transitions. Word has length 119 [2021-11-12 22:19:08,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:19:08,375 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 1130 transitions. [2021-11-12 22:19:08,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2021-11-12 22:19:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1130 transitions. [2021-11-12 22:19:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-12 22:19:08,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:08,378 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:19:08,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:19:08,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:19:08,601 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash 433077792, now seen corresponding path program 1 times [2021-11-12 22:19:08,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:08,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359861168] [2021-11-12 22:19:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:08,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:08,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:08,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:08,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:19:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:19:08,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:19:08,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:19:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 22:19:09,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:19:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 22:19:09,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:19:09,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359861168] [2021-11-12 22:19:09,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359861168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:19:09,747 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:19:09,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:19:09,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452294378] [2021-11-12 22:19:09,747 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:19:09,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:19:09,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:19:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:19:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:19:09,749 INFO L87 Difference]: Start difference. First operand 746 states and 1130 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2021-11-12 22:19:10,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:19:10,676 INFO L93 Difference]: Finished difference Result 1605 states and 2443 transitions. [2021-11-12 22:19:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:19:10,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 143 [2021-11-12 22:19:10,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:19:10,685 INFO L225 Difference]: With dead ends: 1605 [2021-11-12 22:19:10,685 INFO L226 Difference]: Without dead ends: 993 [2021-11-12 22:19:10,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:19:10,690 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 296 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 848.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.03ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 875.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:19:10,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 731 Invalid, 76 Unknown, 0 Unchecked, 3.03ms Time], IncrementalHoareTripleChecker [18 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 875.60ms Time] [2021-11-12 22:19:10,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-11-12 22:19:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 993. [2021-11-12 22:19:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 1.5141129032258065) internal successors, (1502), 992 states have internal predecessors, (1502), 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) [2021-11-12 22:19:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1502 transitions. [2021-11-12 22:19:10,733 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1502 transitions. Word has length 143 [2021-11-12 22:19:10,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:19:10,734 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 1502 transitions. [2021-11-12 22:19:10,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2021-11-12 22:19:10,735 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1502 transitions. [2021-11-12 22:19:10,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-12 22:19:10,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:10,745 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:19:10,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:19:10,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:19:10,960 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:10,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1035961974, now seen corresponding path program 1 times [2021-11-12 22:19:10,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:10,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235593864] [2021-11-12 22:19:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:10,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:10,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:10,963 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:10,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:19:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:19:11,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 22:19:11,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:19:11,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:19:11,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:19:11,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:11,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-12 22:19:11,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:11,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-12 22:19:11,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-12 22:19:12,177 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-12 22:19:12,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 1289 treesize of output 1241 [2021-11-12 22:19:12,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:12,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-12 22:19:12,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:12,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-12 22:19:12,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-12 22:19:12,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2021-11-12 22:19:12,577 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-12 22:19:12,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-12 22:19:12,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:19:12,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-12 22:19:12,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 22:19:12,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-12 22:19:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-12 22:19:13,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:19:13,515 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:13,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-12 22:19:13,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:13,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-12 22:19:13,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:13,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-12 22:19:13,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:13,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-12 22:19:13,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:13,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-12 22:19:13,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:13,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-12 22:19:13,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:13,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-12 22:19:13,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:19:13,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-12 22:19:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-12 22:19:14,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:19:14,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235593864] [2021-11-12 22:19:14,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235593864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:19:14,240 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:19:14,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:19:14,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883448062] [2021-11-12 22:19:14,241 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:19:14,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:19:14,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:19:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:19:14,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:19:14,242 INFO L87 Difference]: Start difference. First operand 993 states and 1502 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:19:16,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:18,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:20,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:21,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:27,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:37,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:38,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:19:38,899 INFO L93 Difference]: Finished difference Result 1983 states and 3000 transitions. [2021-11-12 22:19:38,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:19:38,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-12 22:19:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:19:38,907 INFO L225 Difference]: With dead ends: 1983 [2021-11-12 22:19:38,907 INFO L226 Difference]: Without dead ends: 993 [2021-11-12 22:19:38,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:19:38,909 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24047.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 24511.34ms IncrementalHoareTripleChecker+Time [2021-11-12 22:19:38,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1136 Invalid, 333 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 3 Unknown, 58 Unchecked, 24511.34ms Time] [2021-11-12 22:19:38,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-11-12 22:19:38,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 993. [2021-11-12 22:19:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 1.5131048387096775) internal successors, (1501), 992 states have internal predecessors, (1501), 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) [2021-11-12 22:19:38,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1501 transitions. [2021-11-12 22:19:38,946 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1501 transitions. Word has length 166 [2021-11-12 22:19:38,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:19:38,946 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 1501 transitions. [2021-11-12 22:19:38,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:19:38,947 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1501 transitions. [2021-11-12 22:19:38,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-12 22:19:38,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:38,951 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:19:38,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:19:39,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:19:39,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:39,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1534397000, now seen corresponding path program 1 times [2021-11-12 22:19:39,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:39,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417421778] [2021-11-12 22:19:39,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:39,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:39,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:39,168 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:39,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d6237b-9745-4994-8839-41d6d8b59a56/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:19:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:19:42,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-12 22:19:42,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:34,895 WARN L227 SmtUtils]: Spent 1.88m on a formula simplification. DAG size of input: 66 DAG size of output: 15 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 22:21:34,896 INFO L354 Elim1Store]: treesize reduction 200, result has 14.2 percent of original size [2021-11-12 22:21:34,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 5179 treesize of output 5190 [2021-11-12 22:21:34,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:34,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:35,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:35,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:35,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:35,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:35,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:35,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:35,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:35,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5174 treesize of output 5138 [2021-11-12 22:21:35,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:21:35,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79500 [2021-11-12 22:21:35,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:21:35,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216815 [2021-11-12 22:21:35,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:35,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:35,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:21:35,095 INFO L190 IndexEqualityManager]: detected not equals via solver