./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS --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 64bit --witnessprinter.graph.data.programhash e21b5d9af58d503b543d8ada0d1f774dde2fb8cf43da8014b4dc75fe011ac352 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:18:01,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:18:01,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:18:01,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:18:01,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:18:01,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:18:01,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:18:01,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:18:01,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:18:01,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:18:01,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:18:01,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:18:01,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:18:01,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:18:01,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:18:01,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:18:01,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:18:01,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:18:01,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:18:01,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:18:01,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:18:01,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:18:01,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:18:01,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:18:01,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:18:01,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:18:01,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:18:01,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:18:01,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:18:01,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:18:01,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:18:01,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:18:01,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:18:01,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:18:01,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:18:01,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:18:01,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:18:01,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:18:01,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:18:01,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:18:01,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:18:01,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:18:01,507 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:18:01,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:18:01,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:18:01,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:18:01,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:18:01,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:18:01,510 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:18:01,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:18:01,510 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:18:01,511 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:18:01,512 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:18:01,512 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:18:01,512 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:18:01,512 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:18:01,513 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:18:01,513 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:18:01,513 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:18:01,513 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:18:01,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:18:01,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:18:01,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:18:01,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:18:01,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:18:01,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:18:01,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:18:01,515 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:18:01,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:18:01,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:18:01,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:18:01,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:18:01,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:18:01,517 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:18:01,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:18:01,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:18:01,518 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:18:01,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:18:01,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:18:01,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:18:01,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e21b5d9af58d503b543d8ada0d1f774dde2fb8cf43da8014b4dc75fe011ac352 [2022-11-19 07:18:01,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:18:01,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:18:01,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:18:01,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:18:01,855 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:18:01,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2022-11-19 07:18:01,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/data/72d9c4e6a/60e727049c5541269b2675328483c43d/FLAGfa0d5f3f3 [2022-11-19 07:18:02,559 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:18:02,560 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2022-11-19 07:18:02,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/data/72d9c4e6a/60e727049c5541269b2675328483c43d/FLAGfa0d5f3f3 [2022-11-19 07:18:02,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/data/72d9c4e6a/60e727049c5541269b2675328483c43d [2022-11-19 07:18:02,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:18:02,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:18:02,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:18:02,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:18:02,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:18:02,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:18:02" (1/1) ... [2022-11-19 07:18:02,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301ee549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:02, skipping insertion in model container [2022-11-19 07:18:02,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:18:02" (1/1) ... [2022-11-19 07:18:02,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:18:02,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:18:03,110 WARN L234 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_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1107,1120] [2022-11-19 07:18:03,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:18:03,449 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:18:03,461 WARN L234 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_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1107,1120] [2022-11-19 07:18:03,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:18:03,669 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:18:03,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03 WrapperNode [2022-11-19 07:18:03,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:18:03,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:18:03,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:18:03,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:18:03,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:03,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:03,850 INFO L138 Inliner]: procedures = 15, calls = 102, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1955 [2022-11-19 07:18:03,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:18:03,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:18:03,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:18:03,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:18:03,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:03,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:03,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:03,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:03,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,042 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:18:04,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:18:04,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:18:04,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:18:04,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (1/1) ... [2022-11-19 07:18:04,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:18:04,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:04,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:18:04,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:18:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:18:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:18:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:18:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:18:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:18:04,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:18:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:18:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:18:04,600 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:18:04,602 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:18:06,443 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:18:08,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:18:08,012 INFO L300 CfgBuilder]: Removed 19 assume(true) statements. [2022-11-19 07:18:08,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:18:08 BoogieIcfgContainer [2022-11-19 07:18:08,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:18:08,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:18:08,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:18:08,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:18:08,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:18:02" (1/3) ... [2022-11-19 07:18:08,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e08507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:18:08, skipping insertion in model container [2022-11-19 07:18:08,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:03" (2/3) ... [2022-11-19 07:18:08,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e08507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:18:08, skipping insertion in model container [2022-11-19 07:18:08,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:18:08" (3/3) ... [2022-11-19 07:18:08,024 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2022-11-19 07:18:08,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:18:08,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:18:08,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:18:08,101 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@315170ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:18:08,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:18:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 07:18:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:18:08,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:08,114 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:08,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:08,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:08,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1684877447, now seen corresponding path program 1 times [2022-11-19 07:18:08,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:08,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218499516] [2022-11-19 07:18:08,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:08,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:18:09,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:09,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218499516] [2022-11-19 07:18:09,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218499516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:18:09,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:18:09,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:18:09,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062859843] [2022-11-19 07:18:09,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:09,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:18:09,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:18:09,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:18:09,212 INFO L87 Difference]: Start difference. First operand has 37 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 07:18:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:10,242 INFO L93 Difference]: Finished difference Result 72 states and 119 transitions. [2022-11-19 07:18:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:18:10,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 27 [2022-11-19 07:18:10,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:10,254 INFO L225 Difference]: With dead ends: 72 [2022-11-19 07:18:10,254 INFO L226 Difference]: Without dead ends: 37 [2022-11-19 07:18:10,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:18:10,266 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:10,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:18:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-19 07:18:10,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-19 07:18:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 07:18:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2022-11-19 07:18:10,323 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 27 [2022-11-19 07:18:10,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:10,323 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2022-11-19 07:18:10,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 07:18:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2022-11-19 07:18:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 07:18:10,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:10,326 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:10,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:18:10,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:10,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:10,328 INFO L85 PathProgramCache]: Analyzing trace with hash -122430804, now seen corresponding path program 1 times [2022-11-19 07:18:10,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:10,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958621276] [2022-11-19 07:18:10,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:10,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:18:11,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:11,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958621276] [2022-11-19 07:18:11,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958621276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:11,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816660125] [2022-11-19 07:18:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:11,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:11,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:11,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:11,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:18:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:11,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:18:11,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:18:11,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:18:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:18:11,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816660125] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:11,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:18:11,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-19 07:18:11,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795309342] [2022-11-19 07:18:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:11,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:18:11,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:18:11,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:11,797 INFO L87 Difference]: Start difference. First operand 37 states and 59 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 07:18:12,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:12,673 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2022-11-19 07:18:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:18:12,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 28 [2022-11-19 07:18:12,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:12,675 INFO L225 Difference]: With dead ends: 70 [2022-11-19 07:18:12,675 INFO L226 Difference]: Without dead ends: 38 [2022-11-19 07:18:12,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:12,677 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:12,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:18:12,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-19 07:18:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-19 07:18:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 07:18:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2022-11-19 07:18:12,685 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 28 [2022-11-19 07:18:12,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:12,686 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2022-11-19 07:18:12,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 07:18:12,686 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2022-11-19 07:18:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:18:12,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:12,687 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:12,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:18:12,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:12,896 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:12,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:12,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2143640616, now seen corresponding path program 1 times [2022-11-19 07:18:12,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:12,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906299290] [2022-11-19 07:18:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:12,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:18:13,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:13,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906299290] [2022-11-19 07:18:13,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906299290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:13,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667301810] [2022-11-19 07:18:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:13,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:13,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:13,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:13,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:18:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:14,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:18:14,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:18:14,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:18:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:18:14,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667301810] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:14,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:18:14,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-19 07:18:14,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847873089] [2022-11-19 07:18:14,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:18:14,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:18:14,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:14,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:18:14,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:14,382 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 07:18:15,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:15,257 INFO L93 Difference]: Finished difference Result 73 states and 116 transitions. [2022-11-19 07:18:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:18:15,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-11-19 07:18:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:15,259 INFO L225 Difference]: With dead ends: 73 [2022-11-19 07:18:15,259 INFO L226 Difference]: Without dead ends: 39 [2022-11-19 07:18:15,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:18:15,261 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:15,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:18:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-19 07:18:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-19 07:18:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 07:18:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 61 transitions. [2022-11-19 07:18:15,268 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 61 transitions. Word has length 29 [2022-11-19 07:18:15,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:15,269 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 61 transitions. [2022-11-19 07:18:15,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 07:18:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 61 transitions. [2022-11-19 07:18:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:18:15,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:15,271 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:15,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:18:15,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-19 07:18:15,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:15,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:15,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2073942236, now seen corresponding path program 1 times [2022-11-19 07:18:15,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:15,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619675690] [2022-11-19 07:18:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:15,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:18:16,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:16,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619675690] [2022-11-19 07:18:16,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619675690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:16,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417198159] [2022-11-19 07:18:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:16,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:16,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:16,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:16,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b3f4ffa-cd25-49c7-aba6-f3b9178fc0b6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:18:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:16,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 07:18:16,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:18:16,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:18:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:18:16,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417198159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:18:16,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [769501427] [2022-11-19 07:18:16,928 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-19 07:18:16,928 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:18:16,932 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:18:16,937 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:18:16,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:18:17,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:18:17,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-19 07:18:17,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-11-19 07:18:18,526 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-11-19 07:18:18,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 652 treesize of output 659 [2022-11-19 07:18:19,729 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 37 [2022-11-19 07:18:19,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:18:19,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:18:20,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-11-19 07:18:20,806 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-11-19 07:18:20,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 492 treesize of output 499 [2022-11-19 07:18:21,768 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 37 [2022-11-19 07:18:22,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:18:22,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:18:22,389 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 37 [2022-11-19 07:18:23,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:23,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 96 [2022-11-19 07:18:23,605 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 37 [2022-11-19 07:18:25,121 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2022-11-19 07:18:26,224 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 19683 conjuctions. This might take some time... [2022-11-19 07:26:46,088 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 19683 conjuctions. [2022-11-19 07:26:48,929 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2022-11-19 07:26:49,769 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 19683 conjuctions. This might take some time...