./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/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 c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:37:29,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:37:29,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:37:29,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:37:29,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:37:29,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:37:29,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:37:29,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:37:29,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:37:29,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:37:29,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:37:29,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:37:29,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:37:29,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:37:29,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:37:29,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:37:29,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:37:29,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:37:29,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:37:29,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:37:29,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:37:29,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:37:29,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:37:29,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:37:29,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:37:29,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:37:29,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:37:29,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:37:29,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:37:29,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:37:29,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:37:29,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:37:29,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:37:29,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:37:29,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:37:29,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:37:29,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:37:29,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:37:29,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:37:29,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:37:29,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:37:29,558 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:37:29,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:37:29,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:37:29,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:37:29,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:37:29,598 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:37:29,598 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:37:29,599 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:37:29,599 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:37:29,599 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:37:29,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:37:29,599 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:37:29,600 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:37:29,600 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:37:29,600 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:37:29,600 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:37:29,600 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:37:29,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:37:29,601 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:37:29,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:37:29,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:37:29,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:37:29,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:37:29,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:37:29,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:37:29,603 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:37:29,603 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:37:29,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:37:29,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:37:29,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:37:29,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:37:29,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:37:29,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:29,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:37:29,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:37:29,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:37:29,605 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:37:29,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:37:29,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:37:29,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:37:29,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:37:29,606 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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 [2021-11-13 02:37:29,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:37:29,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:37:29,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:37:29,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:37:29,864 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:37:29,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-13 02:37:29,959 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/data/a260b2ccd/99ff82b51f18460185ff9a0749669561/FLAG954538c60 [2021-11-13 02:37:30,582 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:37:30,582 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-13 02:37:30,624 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/data/a260b2ccd/99ff82b51f18460185ff9a0749669561/FLAG954538c60 [2021-11-13 02:37:30,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/data/a260b2ccd/99ff82b51f18460185ff9a0749669561 [2021-11-13 02:37:30,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:37:30,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:37:30,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:30,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:37:30,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:37:30,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72213a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30, skipping insertion in model container [2021-11-13 02:37:30,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:37:30,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:37:31,368 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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-13 02:37:31,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:31,417 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) [2021-11-13 02:37:31,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77a62cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:31, skipping insertion in model container [2021-11-13 02:37:31,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:31,418 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:37:31,422 INFO L158 Benchmark]: Toolchain (without parser) took 638.35ms. Allocated memory is still 98.6MB. Free memory was 61.9MB in the beginning and 64.8MB in the end (delta: -2.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 02:37:31,424 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 98.6MB. Free memory was 71.0MB in the beginning and 71.0MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:37:31,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 635.28ms. Allocated memory is still 98.6MB. Free memory was 61.6MB in the beginning and 64.8MB in the end (delta: -3.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 02:37:31,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 98.6MB. Free memory was 71.0MB in the beginning and 71.0MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 635.28ms. Allocated memory is still 98.6MB. Free memory was 61.6MB in the beginning and 64.8MB in the end (delta: -3.1MB). Peak memory consumption was 12.6MB. 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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/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 c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:37:33,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:37:33,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:37:33,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:37:33,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:37:33,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:37:33,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:37:33,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:37:33,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:37:33,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:37:33,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:37:33,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:37:33,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:37:33,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:37:33,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:37:33,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:37:33,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:37:33,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:37:33,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:37:33,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:37:33,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:37:33,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:37:33,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:37:33,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:37:33,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:37:33,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:37:33,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:37:33,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:37:33,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:37:33,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:37:33,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:37:33,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:37:33,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:37:33,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:37:33,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:37:33,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:37:33,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:37:33,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:37:33,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:37:33,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:37:33,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:37:33,799 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 02:37:33,845 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:37:33,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:37:33,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:37:33,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:37:33,847 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:37:33,848 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:37:33,848 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:37:33,848 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:37:33,848 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:37:33,849 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:37:33,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:37:33,851 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:37:33,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:37:33,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:37:33,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:37:33,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:37:33,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:37:33,853 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:37:33,853 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:37:33,853 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:37:33,853 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:37:33,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:37:33,854 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:37:33,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:37:33,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:37:33,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:37:33,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:37:33,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:33,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:37:33,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:37:33,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:37:33,856 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:37:33,856 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:37:33,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:37:33,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:37:33,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:37:33,857 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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 [2021-11-13 02:37:34,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:37:34,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:37:34,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:37:34,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:37:34,301 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:37:34,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-13 02:37:34,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/data/8dde56ca7/3460af7dd3d54d98ae76fdbb7f08a570/FLAG728876d5f [2021-11-13 02:37:34,973 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:37:34,974 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-13 02:37:35,019 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/data/8dde56ca7/3460af7dd3d54d98ae76fdbb7f08a570/FLAG728876d5f [2021-11-13 02:37:35,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/data/8dde56ca7/3460af7dd3d54d98ae76fdbb7f08a570 [2021-11-13 02:37:35,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:37:35,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:37:35,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:35,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:37:35,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:37:35,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:35" (1/1) ... [2021-11-13 02:37:35,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6162d647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:35, skipping insertion in model container [2021-11-13 02:37:35,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:35" (1/1) ... [2021-11-13 02:37:35,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:37:35,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:37:35,827 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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-13 02:37:35,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:35,855 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:37:35,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:37:35,997 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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-13 02:37:36,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:36,033 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:37:36,204 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_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-13 02:37:36,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:36,230 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:37:36,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36 WrapperNode [2021-11-13 02:37:36,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:36,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:37:36,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:37:36,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:37:36,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36" (1/1) ... [2021-11-13 02:37:36,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36" (1/1) ... [2021-11-13 02:37:36,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:37:36,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:37:36,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:37:36,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:37:36,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36" (1/1) ... [2021-11-13 02:37:36,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36" (1/1) ... [2021-11-13 02:37:36,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36" (1/1) ... [2021-11-13 02:37:36,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36" (1/1) ... [2021-11-13 02:37:36,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36" (1/1) ... [2021-11-13 02:37:36,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36" (1/1) ... [2021-11-13 02:37:36,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36" (1/1) ... [2021-11-13 02:37:36,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:37:36,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:37:36,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:37:36,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:37:36,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36" (1/1) ... [2021-11-13 02:37:36,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:36,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:37:36,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:37:36,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:37:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:37:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:37:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:37:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:37:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:37:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:37:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:37:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:37:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:37:36,863 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 02:37:45,794 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-13 02:37:45,794 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-13 02:37:45,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:37:45,802 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 02:37:45,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:45 BoogieIcfgContainer [2021-11-13 02:37:45,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:37:45,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:37:45,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:37:45,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:37:45,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:37:35" (1/3) ... [2021-11-13 02:37:45,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e20169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:37:45, skipping insertion in model container [2021-11-13 02:37:45,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:36" (2/3) ... [2021-11-13 02:37:45,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e20169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:37:45, skipping insertion in model container [2021-11-13 02:37:45,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:45" (3/3) ... [2021-11-13 02:37:45,813 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.14.i.cil-1.c [2021-11-13 02:37:45,819 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:37:45,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:37:45,871 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:37:45,878 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 [2021-11-13 02:37:45,878 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:37:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 154 states have (on average 1.7272727272727273) internal successors, (266), 155 states have internal predecessors, (266), 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) [2021-11-13 02:37:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-13 02:37:45,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:45,911 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:45,912 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:45,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:45,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1590777164, now seen corresponding path program 1 times [2021-11-13 02:37:45,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:45,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657567394] [2021-11-13 02:37:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:45,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:45,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:45,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:45,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:37:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:46,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:37:46,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:46,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:46,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:46,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:46,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657567394] [2021-11-13 02:37:46,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657567394] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:46,901 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:46,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:37:46,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384622728] [2021-11-13 02:37:46,907 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:46,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:37:46,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:46,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:37:46,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:37:46,969 INFO L87 Difference]: Start difference. First operand has 156 states, 154 states have (on average 1.7272727272727273) internal successors, (266), 155 states have internal predecessors, (266), 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 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2021-11-13 02:37:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:47,336 INFO L93 Difference]: Finished difference Result 586 states and 1008 transitions. [2021-11-13 02:37:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:37:47,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 45 [2021-11-13 02:37:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:47,355 INFO L225 Difference]: With dead ends: 586 [2021-11-13 02:37:47,355 INFO L226 Difference]: Without dead ends: 401 [2021-11-13 02:37:47,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:37:47,363 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 595 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.60ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 248.55ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:47,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 662 Invalid, 123 Unknown, 0 Unchecked, 16.60ms Time], IncrementalHoareTripleChecker [45 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 248.55ms Time] [2021-11-13 02:37:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-13 02:37:47,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2021-11-13 02:37:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.535) internal successors, (614), 400 states have internal predecessors, (614), 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) [2021-11-13 02:37:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 614 transitions. [2021-11-13 02:37:47,438 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 614 transitions. Word has length 45 [2021-11-13 02:37:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:47,438 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 614 transitions. [2021-11-13 02:37:47,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2021-11-13 02:37:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 614 transitions. [2021-11-13 02:37:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-13 02:37:47,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:47,446 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 02:37:47,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:47,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:47,651 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:47,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:47,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1658829835, now seen corresponding path program 1 times [2021-11-13 02:37:47,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:47,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370035431] [2021-11-13 02:37:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:47,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:47,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:47,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:47,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:37:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:48,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:37:48,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:48,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:48,883 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:48,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370035431] [2021-11-13 02:37:48,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370035431] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:48,884 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:48,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:37:48,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386971127] [2021-11-13 02:37:48,885 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:48,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:37:48,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:48,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:37:48,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:37:48,888 INFO L87 Difference]: Start difference. First operand 401 states and 614 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2021-11-13 02:37:50,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:50,068 INFO L93 Difference]: Finished difference Result 918 states and 1428 transitions. [2021-11-13 02:37:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:37:50,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 106 [2021-11-13 02:37:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:50,086 INFO L225 Difference]: With dead ends: 918 [2021-11-13 02:37:50,087 INFO L226 Difference]: Without dead ends: 657 [2021-11-13 02:37:50,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:37:50,090 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 307 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1098.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.36ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1137.45ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:50,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 721 Invalid, 134 Unknown, 0 Unchecked, 4.36ms Time], IncrementalHoareTripleChecker [42 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 1137.45ms Time] [2021-11-13 02:37:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-13 02:37:50,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2021-11-13 02:37:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 1.5259146341463414) internal successors, (1001), 656 states have internal predecessors, (1001), 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) [2021-11-13 02:37:50,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1001 transitions. [2021-11-13 02:37:50,165 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1001 transitions. Word has length 106 [2021-11-13 02:37:50,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:50,168 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1001 transitions. [2021-11-13 02:37:50,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2021-11-13 02:37:50,169 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1001 transitions. [2021-11-13 02:37:50,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-13 02:37:50,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:50,187 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, 1, 1, 1, 1] [2021-11-13 02:37:50,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:50,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:50,402 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:50,402 INFO L85 PathProgramCache]: Analyzing trace with hash 469411572, now seen corresponding path program 1 times [2021-11-13 02:37:50,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:50,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066491476] [2021-11-13 02:37:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:50,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:50,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:50,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:50,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:37:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:50,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:37:50,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-13 02:37:51,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-13 02:37:51,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:51,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066491476] [2021-11-13 02:37:51,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066491476] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:51,797 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:51,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:37:51,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016199645] [2021-11-13 02:37:51,797 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:51,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:37:51,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:51,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:37:51,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:37:51,799 INFO L87 Difference]: Start difference. First operand 657 states and 1001 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2021-11-13 02:37:52,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:52,355 INFO L93 Difference]: Finished difference Result 1433 states and 2205 transitions. [2021-11-13 02:37:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:37:52,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 170 [2021-11-13 02:37:52,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:52,363 INFO L225 Difference]: With dead ends: 1433 [2021-11-13 02:37:52,363 INFO L226 Difference]: Without dead ends: 916 [2021-11-13 02:37:52,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:37:52,371 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 307 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 461.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 502.08ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:52,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 727 Invalid, 133 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [40 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 502.08ms Time] [2021-11-13 02:37:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-11-13 02:37:52,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 916. [2021-11-13 02:37:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 1.5202185792349727) internal successors, (1391), 915 states have internal predecessors, (1391), 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) [2021-11-13 02:37:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1391 transitions. [2021-11-13 02:37:52,430 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1391 transitions. Word has length 170 [2021-11-13 02:37:52,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:52,432 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 1391 transitions. [2021-11-13 02:37:52,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2021-11-13 02:37:52,434 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1391 transitions. [2021-11-13 02:37:52,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-13 02:37:52,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:52,439 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-13 02:37:52,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:52,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:52,658 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:52,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:52,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1159815289, now seen corresponding path program 1 times [2021-11-13 02:37:52,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:52,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146752574] [2021-11-13 02:37:52,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:52,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:52,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:52,662 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:52,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:37:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:53,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:37:53,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-13 02:37:53,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-13 02:37:54,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:54,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146752574] [2021-11-13 02:37:54,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146752574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:54,382 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:54,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:37:54,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104145789] [2021-11-13 02:37:54,382 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:54,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:37:54,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:37:54,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:37:54,384 INFO L87 Difference]: Start difference. First operand 916 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2021-11-13 02:37:54,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:54,967 INFO L93 Difference]: Finished difference Result 1949 states and 2980 transitions. [2021-11-13 02:37:54,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:37:54,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 234 [2021-11-13 02:37:54,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:54,978 INFO L225 Difference]: With dead ends: 1949 [2021-11-13 02:37:54,978 INFO L226 Difference]: Without dead ends: 1173 [2021-11-13 02:37:54,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:37:54,981 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 315 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 491.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 524.66ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:54,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 725 Invalid, 130 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [38 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 524.66ms Time] [2021-11-13 02:37:54,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-13 02:37:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2021-11-13 02:37:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1172 states have (on average 1.515358361774744) internal successors, (1776), 1172 states have internal predecessors, (1776), 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) [2021-11-13 02:37:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1776 transitions. [2021-11-13 02:37:55,034 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1776 transitions. Word has length 234 [2021-11-13 02:37:55,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:55,036 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1776 transitions. [2021-11-13 02:37:55,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2021-11-13 02:37:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1776 transitions. [2021-11-13 02:37:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-13 02:37:55,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:55,047 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:55,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:55,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:55,259 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:55,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:55,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2069103727, now seen corresponding path program 1 times [2021-11-13 02:37:55,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:55,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845740991] [2021-11-13 02:37:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:55,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:55,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:55,267 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:55,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:37:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:55,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:37:55,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-13 02:37:56,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-13 02:37:57,335 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:57,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845740991] [2021-11-13 02:37:57,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845740991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:57,336 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:57,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:37:57,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875061306] [2021-11-13 02:37:57,339 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:57,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:37:57,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:37:57,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:37:57,341 INFO L87 Difference]: Start difference. First operand 1173 states and 1776 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2021-11-13 02:37:58,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:58,038 INFO L93 Difference]: Finished difference Result 2463 states and 3748 transitions. [2021-11-13 02:37:58,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:37:58,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 306 [2021-11-13 02:37:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:58,048 INFO L225 Difference]: With dead ends: 2463 [2021-11-13 02:37:58,049 INFO L226 Difference]: Without dead ends: 1430 [2021-11-13 02:37:58,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:37:58,051 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 309 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 594.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.28ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 630.23ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:58,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 725 Invalid, 128 Unknown, 0 Unchecked, 3.28ms Time], IncrementalHoareTripleChecker [36 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 630.23ms Time] [2021-11-13 02:37:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-11-13 02:37:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2021-11-13 02:37:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 1.5108467459762072) internal successors, (2159), 1429 states have internal predecessors, (2159), 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) [2021-11-13 02:37:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2159 transitions. [2021-11-13 02:37:58,119 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2159 transitions. Word has length 306 [2021-11-13 02:37:58,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:58,119 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 2159 transitions. [2021-11-13 02:37:58,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2021-11-13 02:37:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2159 transitions. [2021-11-13 02:37:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-13 02:37:58,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:58,129 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:58,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:58,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:58,355 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:58,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2124887066, now seen corresponding path program 1 times [2021-11-13 02:37:58,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:58,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931194452] [2021-11-13 02:37:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:58,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:58,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:58,359 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:58,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:37:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:59,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:37:59,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-11-13 02:37:59,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-11-13 02:38:00,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:00,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931194452] [2021-11-13 02:38:00,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931194452] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:00,666 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:00,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:38:00,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118411612] [2021-11-13 02:38:00,666 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:00,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:38:00,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:00,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:38:00,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:38:00,668 INFO L87 Difference]: Start difference. First operand 1430 states and 2159 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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) [2021-11-13 02:38:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:01,131 INFO L93 Difference]: Finished difference Result 2975 states and 4509 transitions. [2021-11-13 02:38:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:01,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 378 [2021-11-13 02:38:01,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:01,142 INFO L225 Difference]: With dead ends: 2975 [2021-11-13 02:38:01,143 INFO L226 Difference]: Without dead ends: 1685 [2021-11-13 02:38:01,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 752 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:38:01,146 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 309 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 343.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.50ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 373.76ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:01,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 728 Invalid, 125 Unknown, 0 Unchecked, 5.50ms Time], IncrementalHoareTripleChecker [33 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 373.76ms Time] [2021-11-13 02:38:01,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-11-13 02:38:01,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1685. [2021-11-13 02:38:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 1.507125890736342) internal successors, (2538), 1684 states have internal predecessors, (2538), 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) [2021-11-13 02:38:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2538 transitions. [2021-11-13 02:38:01,217 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2538 transitions. Word has length 378 [2021-11-13 02:38:01,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:01,218 INFO L470 AbstractCegarLoop]: Abstraction has 1685 states and 2538 transitions. [2021-11-13 02:38:01,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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) [2021-11-13 02:38:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2538 transitions. [2021-11-13 02:38:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2021-11-13 02:38:01,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:01,231 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:01,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:01,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:01,447 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:01,447 INFO L85 PathProgramCache]: Analyzing trace with hash 906547015, now seen corresponding path program 1 times [2021-11-13 02:38:01,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:01,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567095534] [2021-11-13 02:38:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:01,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:01,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:01,452 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:01,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:38:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:02,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:38:02,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 1041 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-11-13 02:38:03,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 1041 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-11-13 02:38:04,082 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:04,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567095534] [2021-11-13 02:38:04,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567095534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:04,082 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:04,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:38:04,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006457002] [2021-11-13 02:38:04,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:04,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:38:04,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:04,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:38:04,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:38:04,090 INFO L87 Difference]: Start difference. First operand 1685 states and 2538 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2021-11-13 02:38:04,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:04,668 INFO L93 Difference]: Finished difference Result 3486 states and 5267 transitions. [2021-11-13 02:38:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:04,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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 449 [2021-11-13 02:38:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:04,681 INFO L225 Difference]: With dead ends: 3486 [2021-11-13 02:38:04,681 INFO L226 Difference]: Without dead ends: 1941 [2021-11-13 02:38:04,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:38:04,684 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 317 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 466.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.34ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 502.42ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:04,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 729 Invalid, 124 Unknown, 0 Unchecked, 3.34ms Time], IncrementalHoareTripleChecker [32 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 502.42ms Time] [2021-11-13 02:38:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2021-11-13 02:38:04,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1941. [2021-11-13 02:38:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1940 states have (on average 1.5030927835051546) internal successors, (2916), 1940 states have internal predecessors, (2916), 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) [2021-11-13 02:38:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2916 transitions. [2021-11-13 02:38:04,758 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2916 transitions. Word has length 449 [2021-11-13 02:38:04,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:04,759 INFO L470 AbstractCegarLoop]: Abstraction has 1941 states and 2916 transitions. [2021-11-13 02:38:04,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2021-11-13 02:38:04,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2916 transitions. [2021-11-13 02:38:04,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-11-13 02:38:04,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:04,774 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:04,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:04,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:04,995 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1828760135, now seen corresponding path program 1 times [2021-11-13 02:38:04,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:04,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646778309] [2021-11-13 02:38:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:04,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:04,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:05,001 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:05,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:38:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:05,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:38:05,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2169 backedges. 1176 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2021-11-13 02:38:06,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2169 backedges. 1176 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2021-11-13 02:38:07,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:07,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646778309] [2021-11-13 02:38:07,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646778309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:07,704 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:07,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:38:07,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663982582] [2021-11-13 02:38:07,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:07,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:38:07,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:07,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:38:07,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:38:07,707 INFO L87 Difference]: Start difference. First operand 1941 states and 2916 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2021-11-13 02:38:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:08,380 INFO L93 Difference]: Finished difference Result 4002 states and 6026 transitions. [2021-11-13 02:38:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:08,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 486 [2021-11-13 02:38:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:08,395 INFO L225 Difference]: With dead ends: 4002 [2021-11-13 02:38:08,395 INFO L226 Difference]: Without dead ends: 2201 [2021-11-13 02:38:08,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 968 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:38:08,400 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 323 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 559.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.37ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 594.02ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:08,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 732 Invalid, 123 Unknown, 0 Unchecked, 3.37ms Time], IncrementalHoareTripleChecker [29 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 594.02ms Time] [2021-11-13 02:38:08,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2021-11-13 02:38:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2201. [2021-11-13 02:38:08,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2200 states have (on average 1.4986363636363635) internal successors, (3297), 2200 states have internal predecessors, (3297), 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) [2021-11-13 02:38:08,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3297 transitions. [2021-11-13 02:38:08,494 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3297 transitions. Word has length 486 [2021-11-13 02:38:08,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:08,494 INFO L470 AbstractCegarLoop]: Abstraction has 2201 states and 3297 transitions. [2021-11-13 02:38:08,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2021-11-13 02:38:08,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3297 transitions. [2021-11-13 02:38:08,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-13 02:38:08,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:08,502 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:08,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:08,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:08,718 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:08,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:08,719 INFO L85 PathProgramCache]: Analyzing trace with hash 246609113, now seen corresponding path program 1 times [2021-11-13 02:38:08,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:08,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462676097] [2021-11-13 02:38:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:08,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:08,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:08,722 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:08,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:38:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:24,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:38:24,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:25,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:25,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:25,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:38:25,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:38:25,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:38:25,317 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-13 02:38:25,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-13 02:38:25,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:38:25,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:38:25,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:38:25,823 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-13 02:38:25,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 70 treesize of output 87 [2021-11-13 02:38:28,397 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-13 02:38:28,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-13 02:38:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2021-11-13 02:38:28,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2021-11-13 02:38:30,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:30,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462676097] [2021-11-13 02:38:30,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462676097] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:30,133 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:30,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-13 02:38:30,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489011785] [2021-11-13 02:38:30,134 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:30,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:38:30,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:30,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:38:30,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:38:30,135 INFO L87 Difference]: Start difference. First operand 2201 states and 3297 transitions. Second operand has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 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) [2021-11-13 02:38:32,158 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 [] [2021-11-13 02:38:34,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:38:54,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:38:56,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:38:57,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:10,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:12,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:18,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:23,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:23,075 INFO L93 Difference]: Finished difference Result 9840 states and 14794 transitions. [2021-11-13 02:39:23,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:39:23,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 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 519 [2021-11-13 02:39:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:23,122 INFO L225 Difference]: With dead ends: 9840 [2021-11-13 02:39:23,122 INFO L226 Difference]: Without dead ends: 7649 [2021-11-13 02:39:23,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 1030 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:39:23,127 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 373 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 85 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51198.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.64ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52505.47ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:23,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 1071 Invalid, 1009 Unknown, 0 Unchecked, 13.64ms Time], IncrementalHoareTripleChecker [85 Valid, 922 Invalid, 2 Unknown, 0 Unchecked, 52505.47ms Time] [2021-11-13 02:39:23,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2021-11-13 02:39:23,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 2928. [2021-11-13 02:39:23,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 1.578066279467031) internal successors, (4619), 2927 states have internal predecessors, (4619), 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) [2021-11-13 02:39:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 4619 transitions. [2021-11-13 02:39:23,378 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 4619 transitions. Word has length 519 [2021-11-13 02:39:23,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:23,379 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 4619 transitions. [2021-11-13 02:39:23,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 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) [2021-11-13 02:39:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 4619 transitions. [2021-11-13 02:39:23,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-13 02:39:23,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:23,390 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:23,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:23,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:23,611 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash 496064221, now seen corresponding path program 1 times [2021-11-13 02:39:23,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:23,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964396858] [2021-11-13 02:39:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:23,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:23,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:23,617 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:23,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:39:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:29,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 02:39:29,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:29,768 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 [2021-11-13 02:39:29,781 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 [2021-11-13 02:39:29,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:29,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-13 02:39:29,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:29,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-13 02:39:29,913 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 [2021-11-13 02:39:30,420 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-13 02:39:30,420 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 [2021-11-13 02:39:30,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:30,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-13 02:39:30,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:30,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-13 02:39:30,591 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 [2021-11-13 02:39:30,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,750 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 [2021-11-13 02:39:30,872 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-13 02:39:30,873 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 [2021-11-13 02:39:30,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:30,909 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 [2021-11-13 02:39:30,940 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 [2021-11-13 02:39:30,945 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 [2021-11-13 02:39:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2021-11-13 02:39:32,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:33,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:33,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-13 02:39:33,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:33,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-13 02:39:33,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:33,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-13 02:39:33,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:33,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-13 02:39:33,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:33,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-13 02:39:33,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:33,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-13 02:39:33,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:33,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-13 02:39:33,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:39:33,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-13 02:39:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2021-11-13 02:39:34,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:34,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964396858] [2021-11-13 02:39:34,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964396858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:34,300 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:34,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 02:39:34,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481177917] [2021-11-13 02:39:34,301 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:34,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:34,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:34,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:34,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:34,303 INFO L87 Difference]: Start difference. First operand 2928 states and 4619 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 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) [2021-11-13 02:39:36,335 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 [] [2021-11-13 02:39:38,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:45,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:48,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:49,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:49,215 INFO L93 Difference]: Finished difference Result 5853 states and 9234 transitions. [2021-11-13 02:39:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:39:49,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 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 519 [2021-11-13 02:39:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:49,234 INFO L225 Difference]: With dead ends: 5853 [2021-11-13 02:39:49,234 INFO L226 Difference]: Without dead ends: 2928 [2021-11-13 02:39:49,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1029 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:39:49,238 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 12 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14384.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 14712.87ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:49,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 882 Invalid, 228 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 2 Unknown, 59 Unchecked, 14712.87ms Time] [2021-11-13 02:39:49,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2021-11-13 02:39:49,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2928. [2021-11-13 02:39:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 1.5777246327297574) internal successors, (4618), 2927 states have internal predecessors, (4618), 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) [2021-11-13 02:39:49,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 4618 transitions. [2021-11-13 02:39:49,416 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 4618 transitions. Word has length 519 [2021-11-13 02:39:49,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:49,416 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 4618 transitions. [2021-11-13 02:39:49,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 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) [2021-11-13 02:39:49,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 4618 transitions. [2021-11-13 02:39:49,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-13 02:39:49,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:49,425 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:49,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:49,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:49,651 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:49,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:49,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1767969, now seen corresponding path program 1 times [2021-11-13 02:39:49,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:49,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397973487] [2021-11-13 02:39:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:49,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:49,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:49,658 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:49,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:39:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:55,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:39:55,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:55,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:55,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:55,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:55,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:55,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:39:55,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:39:55,322 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-13 02:39:55,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-11-13 02:39:55,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:39:55,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:39:55,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:39:55,680 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-13 02:39:55,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 72 treesize of output 89 [2021-11-13 02:39:57,182 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-13 02:39:57,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 38 [2021-11-13 02:39:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2021-11-13 02:39:58,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2021-11-13 02:39:59,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:59,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397973487] [2021-11-13 02:39:59,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397973487] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:59,640 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:59,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-13 02:39:59,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428714198] [2021-11-13 02:39:59,641 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:59,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:39:59,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:59,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:39:59,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:39:59,643 INFO L87 Difference]: Start difference. First operand 2928 states and 4618 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 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) [2021-11-13 02:40:01,681 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 [] [2021-11-13 02:40:03,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:15,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:17,089 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:18,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:20,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:29,971 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:34,248 INFO L93 Difference]: Finished difference Result 9701 states and 15039 transitions. [2021-11-13 02:40:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:40:34,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 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 519 [2021-11-13 02:40:34,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:34,282 INFO L225 Difference]: With dead ends: 9701 [2021-11-13 02:40:34,283 INFO L226 Difference]: Without dead ends: 6783 [2021-11-13 02:40:34,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1030 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:40:34,288 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 406 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 86 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33299.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.30ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34126.61ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:34,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 666 Invalid, 642 Unknown, 0 Unchecked, 6.30ms Time], IncrementalHoareTripleChecker [86 Valid, 554 Invalid, 2 Unknown, 0 Unchecked, 34126.61ms Time] [2021-11-13 02:40:34,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6783 states. [2021-11-13 02:40:34,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6783 to 3720. [2021-11-13 02:40:34,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3719 states have (on average 1.6141435869857488) internal successors, (6003), 3719 states have internal predecessors, (6003), 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) [2021-11-13 02:40:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6003 transitions. [2021-11-13 02:40:34,609 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6003 transitions. Word has length 519 [2021-11-13 02:40:34,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:34,610 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6003 transitions. [2021-11-13 02:40:34,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 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) [2021-11-13 02:40:34,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6003 transitions. [2021-11-13 02:40:34,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-13 02:40:34,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:34,658 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:34,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:34,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:34,859 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:34,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:34,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1068795037, now seen corresponding path program 1 times [2021-11-13 02:40:34,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:34,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392633421] [2021-11-13 02:40:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:34,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:34,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:34,864 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:34,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 02:40:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:49,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-13 02:40:49,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:41,043 WARN L227 SmtUtils]: Spent 1.87m 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) [2021-11-13 02:42:41,044 INFO L354 Elim1Store]: treesize reduction 200, result has 14.2 percent of original size [2021-11-13 02:42:41,045 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 4167 treesize of output 4178 [2021-11-13 02:42:41,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,157 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 4162 treesize of output 4126 [2021-11-13 02:42:41,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:42:41,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5264 [2021-11-13 02:42:41,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 5526 treesize of output 5242 [2021-11-13 02:42:41,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:42:41,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 4321 treesize of output 4094 [2021-11-13 02:42:41,435 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 4406 treesize of output 4276 [2021-11-13 02:42:41,454 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-13 02:42:41,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:41,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392633421] [2021-11-13 02:42:41,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-13 02:42:41,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1392535662] [2021-11-13 02:42:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:41,484 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:42:41,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:42:41,511 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:42:41,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fc8ab5-ccb8-4f1d-bbc1-0dc7663c03a8/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process