./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --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 66c26537aa176e76686ba25b67c86aedfbccc400319942d9855c43a2b470a76b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:14:22,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:14:22,370 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:14:22,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:14:22,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:14:22,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:14:22,424 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:14:22,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:14:22,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:14:22,426 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:14:22,428 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:14:22,428 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:14:22,429 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:14:22,429 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:14:22,432 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:14:22,433 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:14:22,433 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:14:22,433 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:14:22,434 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:14:22,434 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:14:22,435 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:14:22,435 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:14:22,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:14:22,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:14:22,441 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:14:22,441 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:14:22,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:14:22,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:14:22,442 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:14:22,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:14:22,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:14:22,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:14:22,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:14:22,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:14:22,446 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:14:22,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:14:22,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:14:22,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:14:22,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:14:22,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:14:22,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:14:22,449 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:14:22,450 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:14:22,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:14:22,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:14:22,451 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:14:22,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:14:22,451 INFO L153 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_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66c26537aa176e76686ba25b67c86aedfbccc400319942d9855c43a2b470a76b [2024-11-09 06:14:22,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:14:22,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:14:22,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:14:22,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:14:22,838 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:14:22,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c Unable to find full path for "g++" [2024-11-09 06:14:25,160 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:14:25,367 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:14:25,367 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c [2024-11-09 06:14:25,377 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/data/371941eaf/7b089986b4114390946ed53c64774469/FLAGceab31eea [2024-11-09 06:14:25,403 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/data/371941eaf/7b089986b4114390946ed53c64774469 [2024-11-09 06:14:25,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:14:25,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:14:25,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:14:25,415 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:14:25,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:14:25,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4615569d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25, skipping insertion in model container [2024-11-09 06:14:25,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,452 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:14:25,715 WARN L250 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_05554bf2-c91b-4415-8e69-2d4f2756e3cb/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c[331,344] [2024-11-09 06:14:25,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:14:25,767 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:14:25,784 WARN L250 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_05554bf2-c91b-4415-8e69-2d4f2756e3cb/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c[331,344] [2024-11-09 06:14:25,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:14:25,822 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:14:25,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25 WrapperNode [2024-11-09 06:14:25,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:14:25,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:14:25,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:14:25,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:14:25,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,881 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-11-09 06:14:25,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:14:25,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:14:25,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:14:25,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:14:25,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,898 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:14:25,916 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:14:25,916 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:14:25,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:14:25,917 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (1/1) ... [2024-11-09 06:14:25,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:14:25,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:25,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:14:25,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:14:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:14:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:14:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:14:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:14:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:14:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:14:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:14:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:14:26,112 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:14:26,116 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:14:26,408 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-09 06:14:26,408 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:14:26,575 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:14:26,575 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:14:26,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:14:26 BoogieIcfgContainer [2024-11-09 06:14:26,576 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:14:26,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:14:26,584 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:14:26,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:14:26,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:14:25" (1/3) ... [2024-11-09 06:14:26,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ae7a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:14:26, skipping insertion in model container [2024-11-09 06:14:26,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:25" (2/3) ... [2024-11-09 06:14:26,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ae7a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:14:26, skipping insertion in model container [2024-11-09 06:14:26,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:14:26" (3/3) ... [2024-11-09 06:14:26,592 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_4.c [2024-11-09 06:14:26,624 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:14:26,626 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:14:26,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:14:26,711 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@501802a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:14:26,727 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:14:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 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) [2024-11-09 06:14:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 06:14:26,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:26,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:14:26,747 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:14:26,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash -8385539, now seen corresponding path program 1 times [2024-11-09 06:14:26,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:26,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926046032] [2024-11-09 06:14:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:26,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:14:27,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:27,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926046032] [2024-11-09 06:14:27,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926046032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:14:27,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:14:27,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:14:27,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198898573] [2024-11-09 06:14:27,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:27,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:14:27,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:14:27,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:14:27,202 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-09 06:14:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:27,282 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2024-11-09 06:14:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:14:27,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-11-09 06:14:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:27,296 INFO L225 Difference]: With dead ends: 23 [2024-11-09 06:14:27,296 INFO L226 Difference]: Without dead ends: 12 [2024-11-09 06:14:27,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:14:27,307 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:27,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:14:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-09 06:14:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-09 06:14:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2024-11-09 06:14:27,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-09 06:14:27,357 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2024-11-09 06:14:27,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:27,357 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-09 06:14:27,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-09 06:14:27,358 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-09 06:14:27,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 06:14:27,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:27,359 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:14:27,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:14:27,360 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:14:27,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:27,361 INFO L85 PathProgramCache]: Analyzing trace with hash -635874783, now seen corresponding path program 1 times [2024-11-09 06:14:27,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:27,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104435459] [2024-11-09 06:14:27,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:27,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:14:27,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104435459] [2024-11-09 06:14:27,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104435459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632305434] [2024-11-09 06:14:27,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:27,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:27,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:27,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:27,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:14:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:27,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:14:27,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:14:27,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:14:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:14:27,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632305434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:14:27,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1491270829] [2024-11-09 06:14:27,977 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 06:14:27,977 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:14:27,983 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:14:27,990 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:14:27,990 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:14:28,793 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:14:28,978 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '118#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~N~0) (<= (mod (div (mod ~N~0 4294967296) (* 2 (mod |ULTIMATE.start_main_~R~0#1| 2147483648))) 4294967296) (mod |ULTIMATE.start_main_~j~0#1| 4294967296)))' at error location [2024-11-09 06:14:28,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:14:28,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:14:28,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-09 06:14:28,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511335804] [2024-11-09 06:14:28,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:14:28,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:14:28,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:28,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:14:28,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:14:28,985 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:14:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:29,084 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2024-11-09 06:14:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:14:29,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 06:14:29,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:29,087 INFO L225 Difference]: With dead ends: 24 [2024-11-09 06:14:29,087 INFO L226 Difference]: Without dead ends: 17 [2024-11-09 06:14:29,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:14:29,090 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:29,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:14:29,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-09 06:14:29,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-09 06:14:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2024-11-09 06:14:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-11-09 06:14:29,102 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2024-11-09 06:14:29,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:29,103 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-11-09 06:14:29,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:14:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-11-09 06:14:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 06:14:29,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:29,107 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:14:29,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:14:29,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:29,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:14:29,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:29,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1583894157, now seen corresponding path program 2 times [2024-11-09 06:14:29,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:29,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475914831] [2024-11-09 06:14:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:29,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:14:29,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:29,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475914831] [2024-11-09 06:14:29,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475914831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:29,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932907731] [2024-11-09 06:14:29,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:14:29,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:29,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:29,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:29,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:14:29,949 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:14:29,949 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:14:29,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:14:29,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:30,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2024-11-09 06:14:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 06:14:30,199 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:14:30,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932907731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:14:30,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:14:30,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 06:14:30,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924502423] [2024-11-09 06:14:30,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:30,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:14:30,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:30,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:14:30,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:14:30,202 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-09 06:14:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:30,256 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-09 06:14:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:14:30,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 15 [2024-11-09 06:14:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:30,258 INFO L225 Difference]: With dead ends: 22 [2024-11-09 06:14:30,258 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 06:14:30,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:14:30,259 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:30,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:14:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 06:14:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 06:14:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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) [2024-11-09 06:14:30,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-09 06:14:30,265 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2024-11-09 06:14:30,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:30,265 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-09 06:14:30,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-09 06:14:30,266 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-09 06:14:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 06:14:30,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:30,266 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:14:30,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:14:30,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:30,471 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:14:30,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:30,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1177963317, now seen corresponding path program 1 times [2024-11-09 06:14:30,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:30,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211745066] [2024-11-09 06:14:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:30,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:14:30,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:30,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211745066] [2024-11-09 06:14:30,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211745066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:30,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19548471] [2024-11-09 06:14:30,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:30,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:30,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:30,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:30,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:14:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:30,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:14:30,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:14:31,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:14:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:14:31,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19548471] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:14:31,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1718718611] [2024-11-09 06:14:31,249 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-09 06:14:31,249 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:14:31,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:14:31,250 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:14:31,250 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:14:31,736 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:14:31,909 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '408#(and (<= 1 ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-09 06:14:31,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:14:31,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:14:31,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-09 06:14:31,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406210877] [2024-11-09 06:14:31,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:14:31,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 06:14:31,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:31,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 06:14:31,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=273, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:14:31,913 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 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) [2024-11-09 06:14:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:32,042 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2024-11-09 06:14:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:14:32,043 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 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 19 [2024-11-09 06:14:32,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:32,044 INFO L225 Difference]: With dead ends: 42 [2024-11-09 06:14:32,044 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 06:14:32,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=273, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:14:32,046 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:32,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 15 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:14:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 06:14:32,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 06:14:32,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 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) [2024-11-09 06:14:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-09 06:14:32,054 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 19 [2024-11-09 06:14:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:32,055 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-09 06:14:32,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 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) [2024-11-09 06:14:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-09 06:14:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:14:32,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:32,056 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:14:32,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:14:32,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:32,262 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:14:32,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1745464051, now seen corresponding path program 2 times [2024-11-09 06:14:32,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:32,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440914481] [2024-11-09 06:14:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:32,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:14:33,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:33,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440914481] [2024-11-09 06:14:33,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440914481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657377866] [2024-11-09 06:14:33,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:14:33,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:33,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:33,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:33,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:14:33,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 06:14:33,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:14:33,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:14:33,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:34,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:14:34,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 62 [2024-11-09 06:14:34,209 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 06:14:34,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:14:34,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:14:34,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 51 [2024-11-09 06:14:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 06:14:40,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657377866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:14:40,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [747052138] [2024-11-09 06:14:40,134 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-09 06:14:40,137 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:14:40,137 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:14:40,137 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:14:40,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:14:40,484 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:14:40,697 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '715#(and (<= 1 ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-09 06:14:40,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:14:40,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:14:40,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 20 [2024-11-09 06:14:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592838429] [2024-11-09 06:14:40,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:14:40,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 06:14:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 06:14:40,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-11-09 06:14:40,701 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 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) [2024-11-09 06:14:42,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:14:43,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:14:45,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:14:47,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:14:49,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:14:50,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:14:51,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:14:53,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:14:54,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:14:55,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:14:57,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:14:59,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:59,555 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2024-11-09 06:14:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 06:14:59,557 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 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 31 [2024-11-09 06:14:59,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:59,559 INFO L225 Difference]: With dead ends: 100 [2024-11-09 06:14:59,559 INFO L226 Difference]: Without dead ends: 90 [2024-11-09 06:14:59,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=553, Invalid=1609, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 06:14:59,563 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 126 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 36 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:59,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 39 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 121 Invalid, 12 Unknown, 0 Unchecked, 16.7s Time] [2024-11-09 06:14:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-09 06:14:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 46. [2024-11-09 06:14:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:14:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2024-11-09 06:14:59,579 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 31 [2024-11-09 06:14:59,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:59,579 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2024-11-09 06:14:59,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 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) [2024-11-09 06:14:59,580 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2024-11-09 06:14:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:14:59,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:59,581 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2024-11-09 06:14:59,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:59,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:59,782 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:14:59,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:59,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1856033577, now seen corresponding path program 3 times [2024-11-09 06:14:59,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:59,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467940892] [2024-11-09 06:14:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:59,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:15:00,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:15:00,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467940892] [2024-11-09 06:15:00,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467940892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:15:00,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972954187] [2024-11-09 06:15:00,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:15:00,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:15:00,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:15:00,768 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:15:00,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:15:00,966 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:15:00,966 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:15:00,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 06:15:00,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:15:01,310 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:15:01,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:15:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:15:01,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972954187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:15:01,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1057269231] [2024-11-09 06:15:01,737 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-09 06:15:01,737 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:15:01,737 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:15:01,737 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:15:01,738 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:15:02,005 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:15:02,212 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1253#(and (<= 1 ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-09 06:15:02,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:15:02,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:15:02,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-09 06:15:02,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739316592] [2024-11-09 06:15:02,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:15:02,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 06:15:02,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:15:02,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 06:15:02,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=665, Invalid=1057, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 06:15:02,218 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:15:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:15:02,473 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2024-11-09 06:15:02,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 06:15:02,478 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-09 06:15:02,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:15:02,479 INFO L225 Difference]: With dead ends: 94 [2024-11-09 06:15:02,479 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 06:15:02,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=665, Invalid=1057, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 06:15:02,485 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:15:02,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:15:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 06:15:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-09 06:15:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 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) [2024-11-09 06:15:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-11-09 06:15:02,503 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 45 [2024-11-09 06:15:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:15:02,508 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-11-09 06:15:02,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:15:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-11-09 06:15:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 06:15:02,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:15:02,510 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2024-11-09 06:15:02,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 06:15:02,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:15:02,711 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:15:02,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:15:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash -858716675, now seen corresponding path program 4 times [2024-11-09 06:15:02,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:15:02,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351799145] [2024-11-09 06:15:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:15:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:15:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:15:05,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:15:05,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351799145] [2024-11-09 06:15:05,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351799145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:15:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203089229] [2024-11-09 06:15:05,010 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:15:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:15:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:15:05,012 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:15:05,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:15:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:05,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 06:15:05,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:15:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:15:05,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:15:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:15:07,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203089229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:15:07,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [437675734] [2024-11-09 06:15:07,451 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-09 06:15:07,453 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:15:07,453 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:15:07,453 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:15:07,454 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:15:08,140 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:15:08,848 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1985#(and (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= (mod (div (mod ~N~0 4294967296) (* 2 (mod |ULTIMATE.start_main_~R~0#1| 2147483648))) 4294967296) (mod |ULTIMATE.start_main_~j~0#1| 4294967296)))' at error location [2024-11-09 06:15:08,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:15:08,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:15:08,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 76 [2024-11-09 06:15:08,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428768606] [2024-11-09 06:15:08,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:15:08,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-09 06:15:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:15:08,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-09 06:15:08,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2687, Invalid=4453, Unknown=0, NotChecked=0, Total=7140 [2024-11-09 06:15:08,863 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 77 states, 77 states have (on average 2.038961038961039) internal successors, (157), 76 states have internal predecessors, (157), 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) [2024-11-09 06:15:09,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:15:09,401 INFO L93 Difference]: Finished difference Result 146 states and 173 transitions. [2024-11-09 06:15:09,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-09 06:15:09,402 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.038961038961039) internal successors, (157), 76 states have internal predecessors, (157), 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 71 [2024-11-09 06:15:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:15:09,403 INFO L225 Difference]: With dead ends: 146 [2024-11-09 06:15:09,403 INFO L226 Difference]: Without dead ends: 124 [2024-11-09 06:15:09,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3416 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2687, Invalid=4453, Unknown=0, NotChecked=0, Total=7140 [2024-11-09 06:15:09,407 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:15:09,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:15:09,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-09 06:15:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-09 06:15:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 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) [2024-11-09 06:15:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2024-11-09 06:15:09,425 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 71 [2024-11-09 06:15:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:15:09,425 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2024-11-09 06:15:09,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.038961038961039) internal successors, (157), 76 states have internal predecessors, (157), 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) [2024-11-09 06:15:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2024-11-09 06:15:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 06:15:09,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:15:09,429 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2024-11-09 06:15:09,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 06:15:09,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:15:09,630 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:15:09,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:15:09,631 INFO L85 PathProgramCache]: Analyzing trace with hash 752797861, now seen corresponding path program 5 times [2024-11-09 06:15:09,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:15:09,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057307699] [2024-11-09 06:15:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:15:09,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:15:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:15:16,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:15:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057307699] [2024-11-09 06:15:16,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057307699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:15:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082894400] [2024-11-09 06:15:16,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:15:16,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:15:16,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:15:16,637 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:15:16,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:15:18,074 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 06:15:18,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:15:18,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 06:15:18,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:15:21,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:15:21,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 187 treesize of output 395 [2024-11-09 06:15:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2024-11-09 06:15:21,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:15:30,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:15:30,207 INFO L378 Elim1Store]: Elim1 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 339 treesize of output 491 [2024-11-09 06:17:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2024-11-09 06:17:15,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082894400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:17:15,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [44999043] [2024-11-09 06:17:15,856 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-09 06:17:15,856 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:17:15,856 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:17:15,857 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:17:15,857 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:17:16,327 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:17:17,775 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3186#(and (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= (mod (div (mod ~N~0 4294967296) (* 2 (mod |ULTIMATE.start_main_~R~0#1| 2147483648))) 4294967296) (mod |ULTIMATE.start_main_~j~0#1| 4294967296)))' at error location [2024-11-09 06:17:17,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:17:17,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:17:17,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 12, 11] total 73 [2024-11-09 06:17:17,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695891515] [2024-11-09 06:17:17,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:17:17,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-09 06:17:17,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:17:17,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-09 06:17:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1649, Invalid=4992, Unknown=1, NotChecked=0, Total=6642 [2024-11-09 06:17:17,780 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 73 states have internal predecessors, (159), 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) [2024-11-09 06:17:19,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:21,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:23,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:25,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:27,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:29,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:30,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:31,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:33,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:34,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:36,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:37,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:39,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:40,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:42,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:44,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:45,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:47,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:48,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:49,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:51,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:52,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:53,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:55,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:56,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:17:58,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:00,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:01,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:03,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:04,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:06,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:08,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:09,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:11,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:12,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:14,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:16,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:17,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:19,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:20,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:22,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:23,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:25,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:27,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:28,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:30,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:31,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:33,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:34,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:35,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:37,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:38,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:40,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:41,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:42,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:44,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:45,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:47,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:48,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:50,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:52,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:54,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:56,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:58,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:18:59,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:01,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:03,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:05,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:06,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:08,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:10,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:11,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:13,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:15,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:17,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:18,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:20,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:22,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:23,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:25,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:27,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:28,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:30,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:31,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:32,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:34,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:36,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:37,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:38,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:40,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:42,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:43,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:45,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:46,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:48,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:50,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:51,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:53,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:54,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:56,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:57,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:19:59,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:00,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:02,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:04,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:06,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:07,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:09,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:10,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:12,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:14,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:15,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:17,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:18,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:20,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:21,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:23,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:24,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:26,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:27,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:28,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:30,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:31,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:33,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:34,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:36,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:38,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:40,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:41,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:43,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:45,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:46,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:48,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:50,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:51,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:53,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:54,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:56,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:58,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:20:59,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:01,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:02,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:04,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:05,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:07,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:09,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:10,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:12,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:13,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:15,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:17,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:18,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:20,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:21,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:23,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:24,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:26,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:28,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:29,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:31,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:33,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:34,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:36,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:37,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:39,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:40,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:42,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:44,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:45,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:47,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:48,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:50,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:51,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:53,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:55,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:56,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:58,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:21:59,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:01,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:02,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:04,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:05,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:07,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:09,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:10,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:12,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:13,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:15,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:17,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:18,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:20,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:21,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:23,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:24,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:26,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:27,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:29,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:30,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:32,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:33,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:34,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:36,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:38,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:39,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:41,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:42,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:43,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:22:44,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 06:23:05,180 WARN L286 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 83 DAG size of output: 70 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:23:07,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-09 06:23:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:29,654 INFO L93 Difference]: Finished difference Result 420 states and 428 transitions. [2024-11-09 06:23:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-09 06:23:29,655 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 73 states have internal predecessors, (159), 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 123 [2024-11-09 06:23:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:29,657 INFO L225 Difference]: With dead ends: 420 [2024-11-09 06:23:29,658 INFO L226 Difference]: Without dead ends: 398 [2024-11-09 06:23:29,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5299 ImplicationChecksByTransitivity, 57.7s TimeCoverageRelationStatistics Valid=6852, Invalid=18907, Unknown=1, NotChecked=0, Total=25760 [2024-11-09 06:23:29,665 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 1192 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 281 mSolverCounterUnsat, 208 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 326.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 208 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 327.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:29,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 143 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 456 Invalid, 208 Unknown, 0 Unchecked, 327.0s Time] [2024-11-09 06:23:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-09 06:23:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 150. [2024-11-09 06:23:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 149 states have internal predecessors, (151), 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) [2024-11-09 06:23:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2024-11-09 06:23:29,694 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 123 [2024-11-09 06:23:29,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:29,695 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2024-11-09 06:23:29,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 73 states have internal predecessors, (159), 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) [2024-11-09 06:23:29,696 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2024-11-09 06:23:29,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-09 06:23:29,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:29,698 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2024-11-09 06:23:29,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 06:23:29,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:29,902 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:29,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:29,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2005938361, now seen corresponding path program 6 times [2024-11-09 06:23:29,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:23:29,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312583062] [2024-11-09 06:23:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:29,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:35,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2811 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 06:23:35,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:23:35,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312583062] [2024-11-09 06:23:35,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312583062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:35,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996290458] [2024-11-09 06:23:35,644 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:23:35,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:35,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:23:35,645 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:35,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:23:35,982 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:23:35,982 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:23:35,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-09 06:23:35,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2811 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 06:23:38,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:23:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2811 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 06:23:43,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996290458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:23:43,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [544860579] [2024-11-09 06:23:43,695 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-09 06:23:43,695 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:23:43,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:23:43,696 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:23:43,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:23:43,892 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:23:44,406 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5140#(and (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= (mod (div (mod ~N~0 4294967296) (* 2 (mod |ULTIMATE.start_main_~R~0#1| 2147483648))) 4294967296) (mod |ULTIMATE.start_main_~j~0#1| 4294967296)))' at error location [2024-11-09 06:23:44,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:23:44,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:23:44,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 157 [2024-11-09 06:23:44,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979212161] [2024-11-09 06:23:44,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:23:44,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2024-11-09 06:23:44,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:23:44,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2024-11-09 06:23:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11151, Invalid=15255, Unknown=0, NotChecked=0, Total=26406 [2024-11-09 06:23:44,415 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand has 158 states, 158 states have (on average 2.018987341772152) internal successors, (319), 157 states have internal predecessors, (319), 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) [2024-11-09 06:23:45,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:45,444 INFO L93 Difference]: Finished difference Result 302 states and 356 transitions. [2024-11-09 06:23:45,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-09 06:23:45,445 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 2.018987341772152) internal successors, (319), 157 states have internal predecessors, (319), 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 149 [2024-11-09 06:23:45,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:45,447 INFO L225 Difference]: With dead ends: 302 [2024-11-09 06:23:45,447 INFO L226 Difference]: Without dead ends: 256 [2024-11-09 06:23:45,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11945 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=11151, Invalid=15255, Unknown=0, NotChecked=0, Total=26406 [2024-11-09 06:23:45,450 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:45,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:23:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-09 06:23:45,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-09 06:23:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.007843137254902) internal successors, (257), 255 states have internal predecessors, (257), 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) [2024-11-09 06:23:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-11-09 06:23:45,481 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 149 [2024-11-09 06:23:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:45,482 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-11-09 06:23:45,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 2.018987341772152) internal successors, (319), 157 states have internal predecessors, (319), 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) [2024-11-09 06:23:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-11-09 06:23:45,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-09 06:23:45,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:45,486 INFO L215 NwaCegarLoop]: trace histogram [104, 104, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2024-11-09 06:23:45,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 06:23:45,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:45,687 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:45,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:45,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1231058643, now seen corresponding path program 7 times [2024-11-09 06:23:45,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:23:45,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848001967] [2024-11-09 06:23:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:45,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:24:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 06:24:03,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:24:03,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848001967] [2024-11-09 06:24:03,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848001967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:24:03,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735338745] [2024-11-09 06:24:03,600 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:24:03,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:24:03,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:24:03,601 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:24:03,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:24:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:24:04,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 107 conjuncts are in the unsatisfiable core [2024-11-09 06:24:04,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:24:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 06:24:13,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:24:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 06:24:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735338745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:24:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1074078477] [2024-11-09 06:24:33,769 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-09 06:24:33,769 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:24:33,769 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:24:33,769 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:24:33,769 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:24:34,063 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:24:35,708 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7787#(and (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= (mod (div (mod ~N~0 4294967296) (* 2 (mod |ULTIMATE.start_main_~R~0#1| 2147483648))) 4294967296) (mod |ULTIMATE.start_main_~j~0#1| 4294967296)))' at error location [2024-11-09 06:24:35,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:24:35,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:24:35,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106, 106] total 316 [2024-11-09 06:24:35,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479361808] [2024-11-09 06:24:35,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:24:35,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 317 states [2024-11-09 06:24:35,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:24:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 317 interpolants. [2024-11-09 06:24:35,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44767, Invalid=60533, Unknown=0, NotChecked=0, Total=105300 [2024-11-09 06:24:35,735 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 317 states, 317 states have (on average 2.0094637223974763) internal successors, (637), 316 states have internal predecessors, (637), 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) [2024-11-09 06:24:38,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:24:38,799 INFO L93 Difference]: Finished difference Result 514 states and 621 transitions. [2024-11-09 06:24:38,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2024-11-09 06:24:38,800 INFO L78 Accepts]: Start accepts. Automaton has has 317 states, 317 states have (on average 2.0094637223974763) internal successors, (637), 316 states have internal predecessors, (637), 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 255 [2024-11-09 06:24:38,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:24:38,802 INFO L225 Difference]: With dead ends: 514 [2024-11-09 06:24:38,803 INFO L226 Difference]: Without dead ends: 468 [2024-11-09 06:24:38,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47976 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=44767, Invalid=60533, Unknown=0, NotChecked=0, Total=105300 [2024-11-09 06:24:38,809 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:24:38,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 42 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 06:24:38,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-09 06:24:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2024-11-09 06:24:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.0042826552462527) internal successors, (469), 467 states have internal predecessors, (469), 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) [2024-11-09 06:24:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 469 transitions. [2024-11-09 06:24:38,859 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 469 transitions. Word has length 255 [2024-11-09 06:24:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:24:38,860 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 469 transitions. [2024-11-09 06:24:38,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 317 states, 317 states have (on average 2.0094637223974763) internal successors, (637), 316 states have internal predecessors, (637), 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) [2024-11-09 06:24:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 469 transitions. [2024-11-09 06:24:38,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-09 06:24:38,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:24:38,870 INFO L215 NwaCegarLoop]: trace histogram [210, 210, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2024-11-09 06:24:38,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 06:24:39,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:24:39,071 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:24:39,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:24:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1054136555, now seen corresponding path program 8 times [2024-11-09 06:24:39,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:24:39,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636114778] [2024-11-09 06:24:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:24:39,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:24:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44100 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 06:25:48,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:48,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636114778] [2024-11-09 06:25:48,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636114778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:48,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216840977] [2024-11-09 06:25:48,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:25:48,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:48,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:25:48,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:25:48,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05554bf2-c91b-4415-8e69-2d4f2756e3cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:26:01,195 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 06:26:01,195 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:26:01,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-09 06:26:01,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:26:27,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:26:27,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 583 treesize of output 2087 [2024-11-09 06:26:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 207 proven. 1461 refuted. 0 times theorem prover too weak. 42642 trivial. 0 not checked. [2024-11-09 06:26:28,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:28:28,071 WARN L286 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 172 DAG size of output: 143 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)