./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array22_pattern.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_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/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_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array22_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/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_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/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 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:09:05,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:09:05,886 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:09:05,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:09:05,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:09:05,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:09:05,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:09:05,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:09:05,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:09:05,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:09:05,924 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:09:05,925 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:09:05,925 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:09:05,926 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:09:05,926 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:09:05,927 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:09:05,927 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:09:05,928 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:09:05,928 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:09:05,929 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:09:05,930 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:09:05,930 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:09:05,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:09:05,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:09:05,933 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:09:05,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:09:05,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:09:05,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:09:05,934 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:09:05,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:09:05,935 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:09:05,936 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:09:05,936 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:09:05,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:09:05,937 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:09:05,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:09:05,938 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:09:05,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:09:05,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:09:05,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:09:05,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:09:05,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:09:05,944 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:09:05,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:09:05,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:09:05,944 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:09:05,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:09:05,945 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_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b [2024-11-09 05:09:06,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:09:06,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:09:06,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:09:06,307 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:09:06,310 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:09:06,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-patterns/array22_pattern.c Unable to find full path for "g++" [2024-11-09 05:09:08,668 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:09:08,905 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:09:08,906 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/sv-benchmarks/c/array-patterns/array22_pattern.c [2024-11-09 05:09:08,916 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/data/91237d4b9/ef3ce22f702947d39bb5e2d88ee316c4/FLAG667ba698d [2024-11-09 05:09:09,267 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/data/91237d4b9/ef3ce22f702947d39bb5e2d88ee316c4 [2024-11-09 05:09:09,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:09:09,272 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:09:09,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:09:09,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:09:09,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:09:09,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efd9145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09, skipping insertion in model container [2024-11-09 05:09:09,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,315 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:09:09,534 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_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/sv-benchmarks/c/array-patterns/array22_pattern.c[1347,1360] [2024-11-09 05:09:09,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:09:09,582 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:09:09,599 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_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/sv-benchmarks/c/array-patterns/array22_pattern.c[1347,1360] [2024-11-09 05:09:09,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:09:09,638 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:09:09,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09 WrapperNode [2024-11-09 05:09:09,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:09:09,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:09:09,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:09:09,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:09:09,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,684 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2024-11-09 05:09:09,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:09:09,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:09:09,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:09:09,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:09:09,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:09:09,721 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:09:09,721 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:09:09,721 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:09:09,722 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:09:09,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:09,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:09:09,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:09:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2024-11-09 05:09:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2024-11-09 05:09:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:09:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:09:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:09:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:09:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:09:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:09:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:09:09,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:09:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:09:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:09:09,895 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:09:09,897 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:09:10,187 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-09 05:09:10,188 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:09:10,288 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:09:10,288 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:09:10,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:09:10 BoogieIcfgContainer [2024-11-09 05:09:10,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:09:10,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:09:10,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:09:10,297 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:09:10,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:09:09" (1/3) ... [2024-11-09 05:09:10,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798d6c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:09:10, skipping insertion in model container [2024-11-09 05:09:10,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (2/3) ... [2024-11-09 05:09:10,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798d6c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:09:10, skipping insertion in model container [2024-11-09 05:09:10,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:09:10" (3/3) ... [2024-11-09 05:09:10,301 INFO L112 eAbstractionObserver]: Analyzing ICFG array22_pattern.c [2024-11-09 05:09:10,341 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:09:10,342 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:09:10,424 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:09:10,433 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;@7ac9c4ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:09:10,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:09:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:09:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:09:10,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:10,449 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:10,450 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:10,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:10,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1973252798, now seen corresponding path program 1 times [2024-11-09 05:09:10,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:10,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342644876] [2024-11-09 05:09:10,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:10,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:10,664 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 05:09:10,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:10,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342644876] [2024-11-09 05:09:10,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342644876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:10,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:10,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:09:10,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768751020] [2024-11-09 05:09:10,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:10,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:09:10,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:10,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:09:10,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:09:10,704 INFO L87 Difference]: Start difference. First operand has 32 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:09:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:10,762 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2024-11-09 05:09:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:09:10,768 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-09 05:09:10,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:10,780 INFO L225 Difference]: With dead ends: 44 [2024-11-09 05:09:10,780 INFO L226 Difference]: Without dead ends: 30 [2024-11-09 05:09:10,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:09:10,788 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:10,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:09:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-09 05:09:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-09 05:09:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:09:10,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2024-11-09 05:09:10,837 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 12 [2024-11-09 05:09:10,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:10,839 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2024-11-09 05:09:10,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:09:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2024-11-09 05:09:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:09:10,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:10,842 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:10,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:09:10,843 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:10,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:10,844 INFO L85 PathProgramCache]: Analyzing trace with hash 190025996, now seen corresponding path program 1 times [2024-11-09 05:09:10,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:10,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137703173] [2024-11-09 05:09:10,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:10,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:09:11,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137703173] [2024-11-09 05:09:11,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137703173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:11,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:11,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:09:11,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89346881] [2024-11-09 05:09:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:11,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:09:11,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:11,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:09:11,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:09:11,266 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:09:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:11,319 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2024-11-09 05:09:11,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:09:11,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2024-11-09 05:09:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:11,321 INFO L225 Difference]: With dead ends: 39 [2024-11-09 05:09:11,322 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 05:09:11,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:09:11,324 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 16 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:11,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 83 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:09:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 05:09:11,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 05:09:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:09:11,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2024-11-09 05:09:11,335 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 27 [2024-11-09 05:09:11,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:11,336 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2024-11-09 05:09:11,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:09:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2024-11-09 05:09:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 05:09:11,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:11,339 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:11,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:09:11,339 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:11,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1744159896, now seen corresponding path program 1 times [2024-11-09 05:09:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:11,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279973691] [2024-11-09 05:09:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:11,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 05:09:11,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:11,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279973691] [2024-11-09 05:09:11,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279973691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:11,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:11,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:09:11,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881920770] [2024-11-09 05:09:11,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:11,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:09:11,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:11,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:09:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:09:11,647 INFO L87 Difference]: Start difference. First operand 35 states and 48 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:09:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:11,835 INFO L93 Difference]: Finished difference Result 76 states and 105 transitions. [2024-11-09 05:09:11,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:09:11,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-11-09 05:09:11,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:11,838 INFO L225 Difference]: With dead ends: 76 [2024-11-09 05:09:11,838 INFO L226 Difference]: Without dead ends: 48 [2024-11-09 05:09:11,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:09:11,841 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:11,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 56 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:09:11,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-09 05:09:11,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2024-11-09 05:09:11,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:09:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2024-11-09 05:09:11,852 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 33 [2024-11-09 05:09:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:11,853 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2024-11-09 05:09:11,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:09:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2024-11-09 05:09:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 05:09:11,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:11,855 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:11,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:09:11,856 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:11,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:11,857 INFO L85 PathProgramCache]: Analyzing trace with hash 533367647, now seen corresponding path program 1 times [2024-11-09 05:09:11,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:11,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888257421] [2024-11-09 05:09:11,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:11,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 05:09:12,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:12,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888257421] [2024-11-09 05:09:12,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888257421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:12,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:12,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:09:12,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216597816] [2024-11-09 05:09:12,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:12,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:09:12,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:12,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:09:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:09:12,080 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:09:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:12,204 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2024-11-09 05:09:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:09:12,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2024-11-09 05:09:12,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:12,207 INFO L225 Difference]: With dead ends: 76 [2024-11-09 05:09:12,207 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 05:09:12,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:09:12,209 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:12,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 57 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:09:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 05:09:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2024-11-09 05:09:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:09:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2024-11-09 05:09:12,219 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 37 [2024-11-09 05:09:12,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:12,220 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2024-11-09 05:09:12,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:09:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2024-11-09 05:09:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 05:09:12,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:12,222 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:12,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:09:12,222 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:12,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash -89419324, now seen corresponding path program 1 times [2024-11-09 05:09:12,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:12,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898652023] [2024-11-09 05:09:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:12,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:09:12,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:12,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898652023] [2024-11-09 05:09:12,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898652023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:09:12,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254992379] [2024-11-09 05:09:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:12,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:12,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:12,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:12,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:09:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:12,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 05:09:12,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:09:12,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:09:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 05:09:13,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254992379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:09:13,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1758632635] [2024-11-09 05:09:13,101 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2024-11-09 05:09:13,101 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:09:13,106 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:09:13,112 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:09:13,113 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:09:16,280 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-09 05:09:16,282 INFO L197 IcfgInterpreter]: Interpreting procedure outerBoundaryPatternCheck with input of size 46 for LOIs [2024-11-09 05:09:16,301 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:09:19,423 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '837#(exists ((|v_ULTIMATE.start_main_~row~0#1_37| Int)) (and (<= ~ARR_SIZE~0 |v_ULTIMATE.start_main_~row~0#1_37|) (<= 1 ~ARR_SIZE~0)))' at error location [2024-11-09 05:09:19,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:09:19,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:09:19,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 14 [2024-11-09 05:09:19,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874113801] [2024-11-09 05:09:19,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:09:19,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:09:19,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:09:19,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1051, Unknown=42, NotChecked=0, Total=1260 [2024-11-09 05:09:19,430 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 14 states, 11 states have (on average 4.0) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-09 05:09:19,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:19,674 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2024-11-09 05:09:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:09:19,675 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.0) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 39 [2024-11-09 05:09:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:19,676 INFO L225 Difference]: With dead ends: 79 [2024-11-09 05:09:19,677 INFO L226 Difference]: Without dead ends: 48 [2024-11-09 05:09:19,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=187, Invalid=1175, Unknown=44, NotChecked=0, Total=1406 [2024-11-09 05:09:19,679 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:19,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 38 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:09:19,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-09 05:09:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2024-11-09 05:09:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:09:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-09 05:09:19,689 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 39 [2024-11-09 05:09:19,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:19,690 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-09 05:09:19,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.0) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-09 05:09:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-09 05:09:19,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 05:09:19,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:19,692 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:19,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:09:19,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:19,896 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:19,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:19,897 INFO L85 PathProgramCache]: Analyzing trace with hash 683428078, now seen corresponding path program 2 times [2024-11-09 05:09:19,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:19,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659855732] [2024-11-09 05:09:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:19,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:09:20,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:20,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659855732] [2024-11-09 05:09:20,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659855732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:09:20,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236348875] [2024-11-09 05:09:20,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:09:20,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:20,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:20,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:20,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:09:20,260 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:09:20,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:09:20,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 05:09:20,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:09:20,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:09:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 05:09:20,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236348875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:09:20,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1075656468] [2024-11-09 05:09:20,709 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2024-11-09 05:09:20,710 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:09:20,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:09:20,711 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:09:20,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:09:22,558 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-09 05:09:22,559 INFO L197 IcfgInterpreter]: Interpreting procedure outerBoundaryPatternCheck with input of size 46 for LOIs [2024-11-09 05:09:22,578 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:09:25,530 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1045#true' at error location [2024-11-09 05:09:25,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:09:25,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:09:25,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-11-09 05:09:25,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145174315] [2024-11-09 05:09:25,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:09:25,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 05:09:25,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 05:09:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=907, Unknown=21, NotChecked=0, Total=1056 [2024-11-09 05:09:25,535 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 17 states, 13 states have (on average 5.538461538461538) internal successors, (72), 17 states have internal predecessors, (72), 5 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-09 05:09:25,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:25,954 INFO L93 Difference]: Finished difference Result 97 states and 118 transitions. [2024-11-09 05:09:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:09:25,955 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 5.538461538461538) internal successors, (72), 17 states have internal predecessors, (72), 5 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 43 [2024-11-09 05:09:25,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:25,956 INFO L225 Difference]: With dead ends: 97 [2024-11-09 05:09:25,956 INFO L226 Difference]: Without dead ends: 70 [2024-11-09 05:09:25,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 97 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=170, Invalid=1066, Unknown=24, NotChecked=0, Total=1260 [2024-11-09 05:09:25,959 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 61 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:25,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 73 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:09:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-09 05:09:25,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2024-11-09 05:09:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:09:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-09 05:09:25,972 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 43 [2024-11-09 05:09:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:25,973 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-09 05:09:25,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 5.538461538461538) internal successors, (72), 17 states have internal predecessors, (72), 5 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-09 05:09:25,973 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-09 05:09:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 05:09:25,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:25,975 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:26,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:09:26,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:26,176 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:26,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1133265712, now seen corresponding path program 3 times [2024-11-09 05:09:26,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:26,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541115980] [2024-11-09 05:09:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:26,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:09:26,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158124016] [2024-11-09 05:09:26,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:09:26,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:26,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:26,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:26,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:09:27,362 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:09:27,363 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:09:27,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-09 05:09:27,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:27,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:09:27,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-09 05:09:27,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:09:27,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 05:09:28,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:09:28,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 05:09:29,439 INFO L349 Elim1Store]: treesize reduction 208, result has 33.5 percent of original size [2024-11-09 05:09:29,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 74 treesize of output 142 [2024-11-09 05:09:31,263 INFO L349 Elim1Store]: treesize reduction 96, result has 41.8 percent of original size [2024-11-09 05:09:31,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 265 treesize of output 279 [2024-11-09 05:09:32,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,562 INFO L349 Elim1Store]: treesize reduction 212, result has 0.5 percent of original size [2024-11-09 05:09:32,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 126 treesize of output 223 [2024-11-09 05:09:32,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:09:32,846 INFO L349 Elim1Store]: treesize reduction 144, result has 37.1 percent of original size [2024-11-09 05:09:32,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 137 treesize of output 171 [2024-11-09 05:09:36,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:09:36,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 149 treesize of output 92 [2024-11-09 05:09:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:09:36,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:09:54,826 WARN L286 SmtUtils]: Spent 6.73s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:10:45,053 WARN L286 SmtUtils]: Spent 6.42s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:10:45,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:45,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541115980] [2024-11-09 05:10:45,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:10:45,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158124016] [2024-11-09 05:10:45,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158124016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:45,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1799359855] [2024-11-09 05:10:45,069 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2024-11-09 05:10:45,070 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:45,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:45,070 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:45,071 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:46,632 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-09 05:10:46,634 INFO L197 IcfgInterpreter]: Interpreting procedure outerBoundaryPatternCheck with input of size 45 for LOIs [2024-11-09 05:10:46,648 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:11:30,633 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1883#(and (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 1 ~ARR_SIZE~0))' at error location [2024-11-09 05:11:30,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:11:30,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:11:30,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2024-11-09 05:11:30,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512912935] [2024-11-09 05:11:30,634 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:11:30,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 05:11:30,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:11:30,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 05:11:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=4478, Unknown=62, NotChecked=0, Total=4970 [2024-11-09 05:11:30,639 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 32 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:11:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:35,305 INFO L93 Difference]: Finished difference Result 123 states and 142 transitions. [2024-11-09 05:11:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 05:11:35,306 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 59 [2024-11-09 05:11:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:35,308 INFO L225 Difference]: With dead ends: 123 [2024-11-09 05:11:35,308 INFO L226 Difference]: Without dead ends: 119 [2024-11-09 05:11:35,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 96.1s TimeCoverageRelationStatistics Valid=475, Invalid=4863, Unknown=64, NotChecked=0, Total=5402 [2024-11-09 05:11:35,311 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:35,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 117 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 05:11:35,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-09 05:11:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2024-11-09 05:11:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 82 states have internal predecessors, (95), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 05:11:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2024-11-09 05:11:35,344 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 59 [2024-11-09 05:11:35,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:35,344 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2024-11-09 05:11:35,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:11:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2024-11-09 05:11:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 05:11:35,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:11:35,347 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:11:35,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:11:35,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:35,551 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:11:35,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:11:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash 935180661, now seen corresponding path program 4 times [2024-11-09 05:11:35,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:11:35,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183703285] [2024-11-09 05:11:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:35,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:11:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 05:11:35,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:11:35,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183703285] [2024-11-09 05:11:35,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183703285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:35,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025814419] [2024-11-09 05:11:35,844 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:11:35,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:35,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:11:35,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:11:35,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:11:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:35,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:11:35,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:11:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 05:11:36,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:11:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 05:11:36,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025814419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:11:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1022904410] [2024-11-09 05:11:36,198 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2024-11-09 05:11:36,198 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:11:36,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:11:36,198 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:11:36,199 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:11:37,450 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-09 05:11:37,451 INFO L197 IcfgInterpreter]: Interpreting procedure outerBoundaryPatternCheck with input of size 46 for LOIs [2024-11-09 05:11:37,460 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:11:40,126 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2253#true' at error location [2024-11-09 05:11:40,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:11:40,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:11:40,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 05:11:40,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187261516] [2024-11-09 05:11:40,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:11:40,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:11:40,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:11:40,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:11:40,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=756, Unknown=17, NotChecked=0, Total=870 [2024-11-09 05:11:40,129 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 05:11:40,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:40,617 INFO L93 Difference]: Finished difference Result 254 states and 296 transitions. [2024-11-09 05:11:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:11:40,618 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2024-11-09 05:11:40,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:40,620 INFO L225 Difference]: With dead ends: 254 [2024-11-09 05:11:40,620 INFO L226 Difference]: Without dead ends: 174 [2024-11-09 05:11:40,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 145 SyntacticMatches, 17 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=149, Invalid=1088, Unknown=23, NotChecked=0, Total=1260 [2024-11-09 05:11:40,622 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 38 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:40,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 185 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:11:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-09 05:11:40,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 156. [2024-11-09 05:11:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 127 states have (on average 1.1496062992125984) internal successors, (146), 128 states have internal predecessors, (146), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 05:11:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 180 transitions. [2024-11-09 05:11:40,684 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 180 transitions. Word has length 61 [2024-11-09 05:11:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:40,685 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 180 transitions. [2024-11-09 05:11:40,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 05:11:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 180 transitions. [2024-11-09 05:11:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 05:11:40,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:11:40,688 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:11:40,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:11:40,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:40,889 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:11:40,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:11:40,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1129802475, now seen corresponding path program 5 times [2024-11-09 05:11:40,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:11:40,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637513396] [2024-11-09 05:11:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:40,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:11:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 05:11:41,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:11:41,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637513396] [2024-11-09 05:11:41,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637513396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:41,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824802034] [2024-11-09 05:11:41,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:11:41,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:41,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:11:41,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:11:41,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:11:41,341 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 05:11:41,341 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:11:41,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:11:41,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:11:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 05:11:41,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:11:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 05:11:41,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824802034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:11:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1007941945] [2024-11-09 05:11:41,704 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2024-11-09 05:11:41,704 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:11:41,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:11:41,705 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:11:41,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:11:43,006 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-09 05:11:43,008 INFO L197 IcfgInterpreter]: Interpreting procedure outerBoundaryPatternCheck with input of size 46 for LOIs [2024-11-09 05:11:43,022 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:11:46,227 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3679#(exists ((|v_ULTIMATE.start_main_~row~0#1_94| Int)) (and (<= ~ARR_SIZE~0 |v_ULTIMATE.start_main_~row~0#1_94|) (<= 1 ~ARR_SIZE~0)))' at error location [2024-11-09 05:11:46,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:11:46,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:11:46,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-09 05:11:46,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476662791] [2024-11-09 05:11:46,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:11:46,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 05:11:46,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:11:46,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 05:11:46,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1617, Unknown=35, NotChecked=0, Total=1806 [2024-11-09 05:11:46,230 INFO L87 Difference]: Start difference. First operand 156 states and 180 transitions. Second operand has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 21 states have internal predecessors, (80), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 05:11:47,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:47,994 INFO L93 Difference]: Finished difference Result 252 states and 290 transitions. [2024-11-09 05:11:47,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 05:11:47,995 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 21 states have internal predecessors, (80), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2024-11-09 05:11:47,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:47,996 INFO L225 Difference]: With dead ends: 252 [2024-11-09 05:11:47,997 INFO L226 Difference]: Without dead ends: 192 [2024-11-09 05:11:47,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=624, Invalid=4878, Unknown=48, NotChecked=0, Total=5550 [2024-11-09 05:11:48,000 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 224 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:48,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 145 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:11:48,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-09 05:11:48,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 171. [2024-11-09 05:11:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 149 states have (on average 1.1208053691275168) internal successors, (167), 149 states have internal predecessors, (167), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 05:11:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 193 transitions. [2024-11-09 05:11:48,067 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 193 transitions. Word has length 61 [2024-11-09 05:11:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:48,068 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 193 transitions. [2024-11-09 05:11:48,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 21 states have internal predecessors, (80), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 05:11:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 193 transitions. [2024-11-09 05:11:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 05:11:48,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:11:48,070 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:11:48,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 05:11:48,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:48,271 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:11:48,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:11:48,272 INFO L85 PathProgramCache]: Analyzing trace with hash 603058849, now seen corresponding path program 6 times [2024-11-09 05:11:48,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:11:48,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655063025] [2024-11-09 05:11:48,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:48,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:11:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 37 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:11:48,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:11:48,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655063025] [2024-11-09 05:11:48,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655063025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:48,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179408717] [2024-11-09 05:11:48,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:11:48,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:48,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:11:48,525 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:11:48,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:11:48,643 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:11:48,643 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:11:48,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:11:48,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:11:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 05:11:48,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:11:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 54 proven. 17 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:11:49,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179408717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:11:49,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1245392049] [2024-11-09 05:11:49,079 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2024-11-09 05:11:49,079 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:11:49,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:11:49,080 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:11:49,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:11:50,184 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-09 05:11:50,186 INFO L197 IcfgInterpreter]: Interpreting procedure outerBoundaryPatternCheck with input of size 46 for LOIs [2024-11-09 05:11:50,200 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:11:52,461 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4443#true' at error location [2024-11-09 05:11:52,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:11:52,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:11:52,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 05:11:52,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331274913] [2024-11-09 05:11:52,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:11:52,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:11:52,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:11:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:11:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=881, Unknown=14, NotChecked=0, Total=992 [2024-11-09 05:11:52,464 INFO L87 Difference]: Start difference. First operand 171 states and 193 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 05:11:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:53,072 INFO L93 Difference]: Finished difference Result 202 states and 223 transitions. [2024-11-09 05:11:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 05:11:53,072 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2024-11-09 05:11:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:53,074 INFO L225 Difference]: With dead ends: 202 [2024-11-09 05:11:53,074 INFO L226 Difference]: Without dead ends: 172 [2024-11-09 05:11:53,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 173 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=190, Invalid=1436, Unknown=14, NotChecked=0, Total=1640 [2024-11-09 05:11:53,076 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:53,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 129 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:11:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-09 05:11:53,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 162. [2024-11-09 05:11:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 140 states have (on average 1.1142857142857143) internal successors, (156), 140 states have internal predecessors, (156), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 05:11:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 182 transitions. [2024-11-09 05:11:53,122 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 182 transitions. Word has length 67 [2024-11-09 05:11:53,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:53,122 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 182 transitions. [2024-11-09 05:11:53,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 05:11:53,123 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 182 transitions. [2024-11-09 05:11:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 05:11:53,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:11:53,125 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:11:53,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:11:53,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:11:53,329 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:11:53,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:11:53,329 INFO L85 PathProgramCache]: Analyzing trace with hash -189867793, now seen corresponding path program 1 times [2024-11-09 05:11:53,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:11:53,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761843391] [2024-11-09 05:11:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:53,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:11:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:11:53,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344623681] [2024-11-09 05:11:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:53,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:53,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:11:53,463 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:11:53,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe407d0e-bdd1-45cc-a5cf-532bd7160e1f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:12:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:00,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-09 05:12:00,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:00,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:12:00,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-09 05:12:00,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:12:00,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 05:12:01,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:12:01,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 05:12:02,332 INFO L349 Elim1Store]: treesize reduction 208, result has 33.5 percent of original size [2024-11-09 05:12:02,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 74 treesize of output 142 [2024-11-09 05:12:03,907 INFO L349 Elim1Store]: treesize reduction 96, result has 41.8 percent of original size [2024-11-09 05:12:03,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 265 treesize of output 279 [2024-11-09 05:12:05,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:12:05,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:12:05,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:12:05,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:12:05,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:12:05,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:12:05,164 INFO L349 Elim1Store]: treesize reduction 212, result has 0.5 percent of original size [2024-11-09 05:12:05,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 126 treesize of output 223 [2024-11-09 05:12:22,264 INFO L349 Elim1Store]: treesize reduction 124, result has 35.8 percent of original size [2024-11-09 05:12:22,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 928 treesize of output 921 [2024-11-09 05:12:41,756 INFO L349 Elim1Store]: treesize reduction 1112, result has 40.5 percent of original size [2024-11-09 05:12:41,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 6 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 99 case distinctions, treesize of input 1677 treesize of output 2318 [2024-11-09 05:17:06,608 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:06,609 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:07,587 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:07,587 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:08,028 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:08,029 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:08,092 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:08,093 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:09,068 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:09,069 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:11,453 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:11,453 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:13,379 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:13,380 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:15,219 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:15,219 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:16,325 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 05:17:16,325 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts.