./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/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_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/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_b3d645d1-8d4a-47e3-827e-d272426f5498/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 eb6a86313c6847913ca8b6f4f78c128447d9c9cbacc492e7ef1a5540e3f6a711 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:40:22,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:40:22,870 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:40:22,877 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:40:22,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:40:22,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:40:22,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:40:22,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:40:22,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:40:22,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:40:22,928 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:40:22,928 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:40:22,929 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:40:22,929 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:40:22,932 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:40:22,932 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:40:22,932 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:40:22,933 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:40:22,933 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:40:22,933 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:40:22,934 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:40:22,935 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:40:22,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:40:22,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:40:22,940 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:40:22,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:40:22,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:40:22,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:40:22,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:40:22,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:40:22,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:40:22,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:40:22,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:40:22,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:40:22,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:40:22,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:40:22,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:40:22,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:40:22,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:40:22,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:40:22,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:40:22,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:40:22,947 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:40:22,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:40:22,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:40:22,949 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:40:22,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:40:22,949 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_b3d645d1-8d4a-47e3-827e-d272426f5498/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb6a86313c6847913ca8b6f4f78c128447d9c9cbacc492e7ef1a5540e3f6a711 [2024-11-09 05:40:23,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:40:23,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:40:23,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:40:23,262 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:40:23,263 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:40:23,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c Unable to find full path for "g++" [2024-11-09 05:40:25,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:40:25,712 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:40:25,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-11-09 05:40:25,733 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/data/e03927e3b/544b12432c1c457aa98f4f8f5b768291/FLAGbe5f83a0e [2024-11-09 05:40:25,756 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/data/e03927e3b/544b12432c1c457aa98f4f8f5b768291 [2024-11-09 05:40:25,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:40:25,762 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:40:25,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:40:25,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:40:25,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:40:25,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:40:25" (1/1) ... [2024-11-09 05:40:25,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41567b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:25, skipping insertion in model container [2024-11-09 05:40:25,777 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:40:25" (1/1) ... [2024-11-09 05:40:25,850 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:40:26,178 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_b3d645d1-8d4a-47e3-827e-d272426f5498/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2024-11-09 05:40:26,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:40:26,291 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:40:26,398 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_b3d645d1-8d4a-47e3-827e-d272426f5498/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2024-11-09 05:40:26,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:40:26,479 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:40:26,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26 WrapperNode [2024-11-09 05:40:26,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:40:26,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:40:26,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:40:26,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:40:26,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (1/1) ... [2024-11-09 05:40:26,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (1/1) ... [2024-11-09 05:40:26,571 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 838 [2024-11-09 05:40:26,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:40:26,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:40:26,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:40:26,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:40:26,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (1/1) ... [2024-11-09 05:40:26,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (1/1) ... [2024-11-09 05:40:26,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (1/1) ... [2024-11-09 05:40:26,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (1/1) ... [2024-11-09 05:40:26,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (1/1) ... [2024-11-09 05:40:26,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (1/1) ... [2024-11-09 05:40:26,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (1/1) ... [2024-11-09 05:40:26,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (1/1) ... [2024-11-09 05:40:26,637 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:40:26,638 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:40:26,638 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:40:26,638 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:40:26,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (1/1) ... [2024-11-09 05:40:26,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:40:26,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:40:26,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:40:26,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:40:26,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:40:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:40:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:40:26,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:40:26,943 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:40:26,946 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:40:28,043 INFO L? ?]: Removed 93 outVars from TransFormulas that were not future-live. [2024-11-09 05:40:28,044 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:40:28,389 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:40:28,389 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:40:28,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:40:28 BoogieIcfgContainer [2024-11-09 05:40:28,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:40:28,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:40:28,400 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:40:28,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:40:28,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:40:25" (1/3) ... [2024-11-09 05:40:28,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc43d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:40:28, skipping insertion in model container [2024-11-09 05:40:28,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:26" (2/3) ... [2024-11-09 05:40:28,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc43d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:40:28, skipping insertion in model container [2024-11-09 05:40:28,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:40:28" (3/3) ... [2024-11-09 05:40:28,417 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-11-09 05:40:28,458 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:40:28,459 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:40:28,559 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:40:28,568 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;@12f7f3d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:40:28,569 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:40:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 151 states have (on average 1.7086092715231789) internal successors, (258), 152 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:28,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 05:40:28,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:28,586 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:40:28,586 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:28,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash -278390360, now seen corresponding path program 1 times [2024-11-09 05:40:28,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:28,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145854562] [2024-11-09 05:40:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:28,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:29,678 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 05:40:29,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:29,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145854562] [2024-11-09 05:40:29,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145854562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:29,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:29,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:40:29,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17706013] [2024-11-09 05:40:29,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:29,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:40:29,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:29,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:40:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:40:29,725 INFO L87 Difference]: Start difference. First operand has 153 states, 151 states have (on average 1.7086092715231789) internal successors, (258), 152 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:30,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:30,172 INFO L93 Difference]: Finished difference Result 535 states and 857 transitions. [2024-11-09 05:40:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:40:30,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-09 05:40:30,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:30,189 INFO L225 Difference]: With dead ends: 535 [2024-11-09 05:40:30,189 INFO L226 Difference]: Without dead ends: 445 [2024-11-09 05:40:30,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:40:30,196 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 883 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:30,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 945 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:40:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-09 05:40:30,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 437. [2024-11-09 05:40:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.4059633027522935) internal successors, (613), 436 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:30,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 613 transitions. [2024-11-09 05:40:30,265 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 613 transitions. Word has length 66 [2024-11-09 05:40:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:30,266 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 613 transitions. [2024-11-09 05:40:30,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 613 transitions. [2024-11-09 05:40:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 05:40:30,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:30,270 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:30,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:40:30,271 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:30,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1594768938, now seen corresponding path program 1 times [2024-11-09 05:40:30,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:30,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920988839] [2024-11-09 05:40:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:30,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:30,488 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 05:40:30,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920988839] [2024-11-09 05:40:30,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920988839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:30,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:30,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:40:30,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985295003] [2024-11-09 05:40:30,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:30,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:40:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:40:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:40:30,493 INFO L87 Difference]: Start difference. First operand 437 states and 613 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:30,823 INFO L93 Difference]: Finished difference Result 1045 states and 1509 transitions. [2024-11-09 05:40:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:40:30,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-09 05:40:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:30,832 INFO L225 Difference]: With dead ends: 1045 [2024-11-09 05:40:30,832 INFO L226 Difference]: Without dead ends: 684 [2024-11-09 05:40:30,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:40:30,836 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 526 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:30,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 219 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:40:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-11-09 05:40:30,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 682. [2024-11-09 05:40:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.4375917767988253) internal successors, (979), 681 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 979 transitions. [2024-11-09 05:40:30,892 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 979 transitions. Word has length 67 [2024-11-09 05:40:30,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:30,893 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 979 transitions. [2024-11-09 05:40:30,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 979 transitions. [2024-11-09 05:40:30,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 05:40:30,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:30,898 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:30,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:40:30,898 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:30,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash -486383480, now seen corresponding path program 1 times [2024-11-09 05:40:30,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:30,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111125965] [2024-11-09 05:40:30,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:30,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:31,212 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 05:40:31,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:31,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111125965] [2024-11-09 05:40:31,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111125965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:31,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:31,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:40:31,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786924712] [2024-11-09 05:40:31,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:31,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:40:31,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:31,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:40:31,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:40:31,218 INFO L87 Difference]: Start difference. First operand 682 states and 979 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:31,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:31,534 INFO L93 Difference]: Finished difference Result 1716 states and 2525 transitions. [2024-11-09 05:40:31,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:40:31,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-09 05:40:31,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:31,542 INFO L225 Difference]: With dead ends: 1716 [2024-11-09 05:40:31,543 INFO L226 Difference]: Without dead ends: 1174 [2024-11-09 05:40:31,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:40:31,550 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 533 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:31,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 228 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:40:31,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2024-11-09 05:40:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1172. [2024-11-09 05:40:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 1.4611443210930828) internal successors, (1711), 1171 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:31,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1711 transitions. [2024-11-09 05:40:31,588 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1711 transitions. Word has length 67 [2024-11-09 05:40:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:31,589 INFO L471 AbstractCegarLoop]: Abstraction has 1172 states and 1711 transitions. [2024-11-09 05:40:31,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:31,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1711 transitions. [2024-11-09 05:40:31,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 05:40:31,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:31,593 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:31,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:40:31,597 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:31,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1249917383, now seen corresponding path program 1 times [2024-11-09 05:40:31,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:31,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680167516] [2024-11-09 05:40:31,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:31,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:31,850 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 05:40:31,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:31,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680167516] [2024-11-09 05:40:31,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680167516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:31,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:31,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:40:31,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008765052] [2024-11-09 05:40:31,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:31,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:40:31,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:40:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:40:31,855 INFO L87 Difference]: Start difference. First operand 1172 states and 1711 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:32,190 INFO L93 Difference]: Finished difference Result 3220 states and 4773 transitions. [2024-11-09 05:40:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:40:32,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-09 05:40:32,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:32,198 INFO L225 Difference]: With dead ends: 3220 [2024-11-09 05:40:32,199 INFO L226 Difference]: Without dead ends: 2154 [2024-11-09 05:40:32,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:40:32,207 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 503 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:32,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 227 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:40:32,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2024-11-09 05:40:32,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2152. [2024-11-09 05:40:32,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 2151 states have (on average 1.4718735471873547) internal successors, (3166), 2151 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3166 transitions. [2024-11-09 05:40:32,255 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3166 transitions. Word has length 67 [2024-11-09 05:40:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:32,255 INFO L471 AbstractCegarLoop]: Abstraction has 2152 states and 3166 transitions. [2024-11-09 05:40:32,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:32,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3166 transitions. [2024-11-09 05:40:32,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 05:40:32,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:32,257 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:32,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:40:32,258 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:32,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:32,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1878214747, now seen corresponding path program 1 times [2024-11-09 05:40:32,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:32,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719785405] [2024-11-09 05:40:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:32,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:32,456 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 05:40:32,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:32,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719785405] [2024-11-09 05:40:32,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719785405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:32,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:32,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:40:32,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501373717] [2024-11-09 05:40:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:32,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:40:32,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:32,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:40:32,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:40:32,463 INFO L87 Difference]: Start difference. First operand 2152 states and 3166 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:32,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:32,760 INFO L93 Difference]: Finished difference Result 6213 states and 9215 transitions. [2024-11-09 05:40:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:40:32,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-09 05:40:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:32,775 INFO L225 Difference]: With dead ends: 6213 [2024-11-09 05:40:32,775 INFO L226 Difference]: Without dead ends: 4114 [2024-11-09 05:40:32,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:40:32,781 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 519 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:32,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 211 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:40:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2024-11-09 05:40:32,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 4112. [2024-11-09 05:40:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4112 states, 4111 states have (on average 1.4699586475310145) internal successors, (6043), 4111 states have internal predecessors, (6043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 6043 transitions. [2024-11-09 05:40:32,930 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 6043 transitions. Word has length 67 [2024-11-09 05:40:32,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:32,930 INFO L471 AbstractCegarLoop]: Abstraction has 4112 states and 6043 transitions. [2024-11-09 05:40:32,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 6043 transitions. [2024-11-09 05:40:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 05:40:32,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:32,932 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:32,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:40:32,933 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:32,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:32,933 INFO L85 PathProgramCache]: Analyzing trace with hash 892905404, now seen corresponding path program 1 times [2024-11-09 05:40:32,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:32,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834146154] [2024-11-09 05:40:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:32,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:36,238 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 05:40:36,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:36,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834146154] [2024-11-09 05:40:36,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834146154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:36,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:36,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-09 05:40:36,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103384944] [2024-11-09 05:40:36,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:36,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 05:40:36,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:36,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 05:40:36,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2024-11-09 05:40:36,244 INFO L87 Difference]: Start difference. First operand 4112 states and 6043 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:39,410 INFO L93 Difference]: Finished difference Result 8415 states and 12357 transitions. [2024-11-09 05:40:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 05:40:39,411 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-09 05:40:39,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:39,439 INFO L225 Difference]: With dead ends: 8415 [2024-11-09 05:40:39,440 INFO L226 Difference]: Without dead ends: 8413 [2024-11-09 05:40:39,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=271, Invalid=1211, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 05:40:39,446 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 1311 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:39,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 1982 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 05:40:39,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8413 states. [2024-11-09 05:40:39,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8413 to 6249. [2024-11-09 05:40:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6249 states, 6248 states have (on average 1.4638284250960307) internal successors, (9146), 6248 states have internal predecessors, (9146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6249 states to 6249 states and 9146 transitions. [2024-11-09 05:40:39,648 INFO L78 Accepts]: Start accepts. Automaton has 6249 states and 9146 transitions. Word has length 68 [2024-11-09 05:40:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:39,650 INFO L471 AbstractCegarLoop]: Abstraction has 6249 states and 9146 transitions. [2024-11-09 05:40:39,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 6249 states and 9146 transitions. [2024-11-09 05:40:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 05:40:39,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:39,651 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:39,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:40:39,651 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:39,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:39,652 INFO L85 PathProgramCache]: Analyzing trace with hash -256768132, now seen corresponding path program 1 times [2024-11-09 05:40:39,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:39,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072776800] [2024-11-09 05:40:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:39,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:41,341 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 05:40:41,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:41,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072776800] [2024-11-09 05:40:41,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072776800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:41,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:41,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-09 05:40:41,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28762800] [2024-11-09 05:40:41,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:41,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 05:40:41,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:41,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 05:40:41,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:40:41,345 INFO L87 Difference]: Start difference. First operand 6249 states and 9146 transitions. Second operand has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:42,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:42,325 INFO L93 Difference]: Finished difference Result 7189 states and 10498 transitions. [2024-11-09 05:40:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 05:40:42,326 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-09 05:40:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:42,350 INFO L225 Difference]: With dead ends: 7189 [2024-11-09 05:40:42,351 INFO L226 Difference]: Without dead ends: 7187 [2024-11-09 05:40:42,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2024-11-09 05:40:42,354 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 698 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:42,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1489 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:40:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2024-11-09 05:40:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 6271. [2024-11-09 05:40:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6271 states, 6270 states have (on average 1.4628389154704944) internal successors, (9172), 6270 states have internal predecessors, (9172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 9172 transitions. [2024-11-09 05:40:42,540 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 9172 transitions. Word has length 68 [2024-11-09 05:40:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:42,541 INFO L471 AbstractCegarLoop]: Abstraction has 6271 states and 9172 transitions. [2024-11-09 05:40:42,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:42,542 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 9172 transitions. [2024-11-09 05:40:42,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 05:40:42,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:42,543 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:42,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:40:42,544 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:42,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:42,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1394193308, now seen corresponding path program 1 times [2024-11-09 05:40:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:42,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542804302] [2024-11-09 05:40:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:42,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:44,182 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 05:40:44,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542804302] [2024-11-09 05:40:44,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542804302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:44,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:44,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-09 05:40:44,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637073975] [2024-11-09 05:40:44,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:44,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 05:40:44,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 05:40:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:40:44,186 INFO L87 Difference]: Start difference. First operand 6271 states and 9172 transitions. Second operand has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:45,347 INFO L93 Difference]: Finished difference Result 8090 states and 11820 transitions. [2024-11-09 05:40:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 05:40:45,348 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-09 05:40:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:45,392 INFO L225 Difference]: With dead ends: 8090 [2024-11-09 05:40:45,392 INFO L226 Difference]: Without dead ends: 7176 [2024-11-09 05:40:45,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2024-11-09 05:40:45,398 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 857 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:45,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1287 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:40:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7176 states. [2024-11-09 05:40:45,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7176 to 7103. [2024-11-09 05:40:45,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7103 states, 7102 states have (on average 1.4601520698394819) internal successors, (10370), 7102 states have internal predecessors, (10370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:45,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 10370 transitions. [2024-11-09 05:40:45,567 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 10370 transitions. Word has length 68 [2024-11-09 05:40:45,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:45,567 INFO L471 AbstractCegarLoop]: Abstraction has 7103 states and 10370 transitions. [2024-11-09 05:40:45,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:45,568 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 10370 transitions. [2024-11-09 05:40:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 05:40:45,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:45,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:45,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 05:40:45,570 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:45,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash -851516452, now seen corresponding path program 1 times [2024-11-09 05:40:45,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:45,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632516418] [2024-11-09 05:40:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:45,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:48,549 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 05:40:48,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:48,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632516418] [2024-11-09 05:40:48,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632516418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:48,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:48,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-09 05:40:48,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108788894] [2024-11-09 05:40:48,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:48,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 05:40:48,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:48,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 05:40:48,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2024-11-09 05:40:48,552 INFO L87 Difference]: Start difference. First operand 7103 states and 10370 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:52,107 INFO L93 Difference]: Finished difference Result 10031 states and 14674 transitions. [2024-11-09 05:40:52,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 05:40:52,112 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-09 05:40:52,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:52,139 INFO L225 Difference]: With dead ends: 10031 [2024-11-09 05:40:52,139 INFO L226 Difference]: Without dead ends: 10029 [2024-11-09 05:40:52,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 05:40:52,143 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 938 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:52,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 2234 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 05:40:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10029 states. [2024-11-09 05:40:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10029 to 7865. [2024-11-09 05:40:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7865 states, 7864 states have (on average 1.460707019328586) internal successors, (11487), 7864 states have internal predecessors, (11487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7865 states to 7865 states and 11487 transitions. [2024-11-09 05:40:52,302 INFO L78 Accepts]: Start accepts. Automaton has 7865 states and 11487 transitions. Word has length 68 [2024-11-09 05:40:52,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:52,303 INFO L471 AbstractCegarLoop]: Abstraction has 7865 states and 11487 transitions. [2024-11-09 05:40:52,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:52,304 INFO L276 IsEmpty]: Start isEmpty. Operand 7865 states and 11487 transitions. [2024-11-09 05:40:52,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 05:40:52,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:52,305 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:52,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 05:40:52,306 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:52,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:52,306 INFO L85 PathProgramCache]: Analyzing trace with hash 30479326, now seen corresponding path program 1 times [2024-11-09 05:40:52,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:52,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797124543] [2024-11-09 05:40:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:52,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:52,452 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 05:40:52,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:52,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797124543] [2024-11-09 05:40:52,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797124543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:52,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:52,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:40:52,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793218637] [2024-11-09 05:40:52,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:52,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:40:52,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:52,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:40:52,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:40:52,455 INFO L87 Difference]: Start difference. First operand 7865 states and 11487 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:52,669 INFO L93 Difference]: Finished difference Result 11915 states and 17460 transitions. [2024-11-09 05:40:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:40:52,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-09 05:40:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:52,688 INFO L225 Difference]: With dead ends: 11915 [2024-11-09 05:40:52,688 INFO L226 Difference]: Without dead ends: 7865 [2024-11-09 05:40:52,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:40:52,694 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 433 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:52,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 164 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:40:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7865 states. [2024-11-09 05:40:52,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7865 to 7865. [2024-11-09 05:40:52,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7865 states, 7864 states have (on average 1.4605798575788402) internal successors, (11486), 7864 states have internal predecessors, (11486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7865 states to 7865 states and 11486 transitions. [2024-11-09 05:40:52,837 INFO L78 Accepts]: Start accepts. Automaton has 7865 states and 11486 transitions. Word has length 68 [2024-11-09 05:40:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:52,837 INFO L471 AbstractCegarLoop]: Abstraction has 7865 states and 11486 transitions. [2024-11-09 05:40:52,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 7865 states and 11486 transitions. [2024-11-09 05:40:52,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 05:40:52,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:52,839 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:52,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 05:40:52,839 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:52,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:52,840 INFO L85 PathProgramCache]: Analyzing trace with hash -679109846, now seen corresponding path program 1 times [2024-11-09 05:40:52,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:52,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054203205] [2024-11-09 05:40:52,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:52,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:54,840 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 05:40:54,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:54,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054203205] [2024-11-09 05:40:54,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054203205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:54,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:54,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-09 05:40:54,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678151137] [2024-11-09 05:40:54,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:54,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 05:40:54,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:54,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 05:40:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:40:54,844 INFO L87 Difference]: Start difference. First operand 7865 states and 11486 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:55,850 INFO L93 Difference]: Finished difference Result 11849 states and 17384 transitions. [2024-11-09 05:40:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 05:40:55,851 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-09 05:40:55,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:55,876 INFO L225 Difference]: With dead ends: 11849 [2024-11-09 05:40:55,877 INFO L226 Difference]: Without dead ends: 11847 [2024-11-09 05:40:55,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2024-11-09 05:40:55,882 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 672 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:55,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1343 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:40:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11847 states. [2024-11-09 05:40:56,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11847 to 8960. [2024-11-09 05:40:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8960 states, 8959 states have (on average 1.4626632436655878) internal successors, (13104), 8959 states have internal predecessors, (13104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8960 states to 8960 states and 13104 transitions. [2024-11-09 05:40:56,051 INFO L78 Accepts]: Start accepts. Automaton has 8960 states and 13104 transitions. Word has length 69 [2024-11-09 05:40:56,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:56,052 INFO L471 AbstractCegarLoop]: Abstraction has 8960 states and 13104 transitions. [2024-11-09 05:40:56,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:56,052 INFO L276 IsEmpty]: Start isEmpty. Operand 8960 states and 13104 transitions. [2024-11-09 05:40:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 05:40:56,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:56,054 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:56,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 05:40:56,054 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:56,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:56,055 INFO L85 PathProgramCache]: Analyzing trace with hash 77029520, now seen corresponding path program 1 times [2024-11-09 05:40:56,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:56,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211734752] [2024-11-09 05:40:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:56,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:57,891 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 05:40:57,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:57,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211734752] [2024-11-09 05:40:57,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211734752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:57,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:57,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-09 05:40:57,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815286602] [2024-11-09 05:40:57,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:57,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 05:40:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:57,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 05:40:57,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:40:57,896 INFO L87 Difference]: Start difference. First operand 8960 states and 13104 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:58,922 INFO L93 Difference]: Finished difference Result 13267 states and 19382 transitions. [2024-11-09 05:40:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:40:58,923 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-09 05:40:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:58,952 INFO L225 Difference]: With dead ends: 13267 [2024-11-09 05:40:58,953 INFO L226 Difference]: Without dead ends: 13265 [2024-11-09 05:40:58,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2024-11-09 05:40:58,958 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 767 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:58,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1709 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:40:58,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13265 states. [2024-11-09 05:40:59,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13265 to 8969. [2024-11-09 05:40:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8969 states, 8968 states have (on average 1.4623104371097235) internal successors, (13114), 8968 states have internal predecessors, (13114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8969 states to 8969 states and 13114 transitions. [2024-11-09 05:40:59,123 INFO L78 Accepts]: Start accepts. Automaton has 8969 states and 13114 transitions. Word has length 70 [2024-11-09 05:40:59,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:59,123 INFO L471 AbstractCegarLoop]: Abstraction has 8969 states and 13114 transitions. [2024-11-09 05:40:59,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:40:59,124 INFO L276 IsEmpty]: Start isEmpty. Operand 8969 states and 13114 transitions. [2024-11-09 05:40:59,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 05:40:59,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:59,125 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:59,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 05:40:59,126 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:59,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:59,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1727990960, now seen corresponding path program 1 times [2024-11-09 05:40:59,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:59,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957113824] [2024-11-09 05:40:59,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:59,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:01,111 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 05:41:01,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:01,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957113824] [2024-11-09 05:41:01,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957113824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:01,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:01,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-09 05:41:01,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538014276] [2024-11-09 05:41:01,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:01,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 05:41:01,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 05:41:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:41:01,115 INFO L87 Difference]: Start difference. First operand 8969 states and 13114 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:01,923 INFO L93 Difference]: Finished difference Result 10786 states and 15758 transitions. [2024-11-09 05:41:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:41:01,924 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-09 05:41:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:01,939 INFO L225 Difference]: With dead ends: 10786 [2024-11-09 05:41:01,939 INFO L226 Difference]: Without dead ends: 9872 [2024-11-09 05:41:01,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2024-11-09 05:41:01,944 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 900 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:01,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1215 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:41:01,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9872 states. [2024-11-09 05:41:02,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9872 to 8966. [2024-11-09 05:41:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8966 states, 8965 states have (on average 1.4623535973229225) internal successors, (13110), 8965 states have internal predecessors, (13110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8966 states to 8966 states and 13110 transitions. [2024-11-09 05:41:02,084 INFO L78 Accepts]: Start accepts. Automaton has 8966 states and 13110 transitions. Word has length 70 [2024-11-09 05:41:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:02,085 INFO L471 AbstractCegarLoop]: Abstraction has 8966 states and 13110 transitions. [2024-11-09 05:41:02,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 8966 states and 13110 transitions. [2024-11-09 05:41:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 05:41:02,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:02,087 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:02,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 05:41:02,087 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:02,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash 778368112, now seen corresponding path program 1 times [2024-11-09 05:41:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:02,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189065898] [2024-11-09 05:41:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:02,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:04,127 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 05:41:04,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:04,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189065898] [2024-11-09 05:41:04,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189065898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:04,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:04,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-09 05:41:04,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247285826] [2024-11-09 05:41:04,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:04,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 05:41:04,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:04,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 05:41:04,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:41:04,130 INFO L87 Difference]: Start difference. First operand 8966 states and 13110 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:05,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:05,406 INFO L93 Difference]: Finished difference Result 10837 states and 15788 transitions. [2024-11-09 05:41:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 05:41:05,406 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-09 05:41:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:05,422 INFO L225 Difference]: With dead ends: 10837 [2024-11-09 05:41:05,422 INFO L226 Difference]: Without dead ends: 10835 [2024-11-09 05:41:05,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2024-11-09 05:41:05,427 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 663 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:05,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 2035 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 05:41:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10835 states. [2024-11-09 05:41:05,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10835 to 9442. [2024-11-09 05:41:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9442 states, 9441 states have (on average 1.4596970659887725) internal successors, (13781), 9441 states have internal predecessors, (13781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9442 states to 9442 states and 13781 transitions. [2024-11-09 05:41:05,580 INFO L78 Accepts]: Start accepts. Automaton has 9442 states and 13781 transitions. Word has length 70 [2024-11-09 05:41:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:05,580 INFO L471 AbstractCegarLoop]: Abstraction has 9442 states and 13781 transitions. [2024-11-09 05:41:05,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 9442 states and 13781 transitions. [2024-11-09 05:41:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 05:41:05,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:05,582 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:05,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 05:41:05,583 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:05,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:05,583 INFO L85 PathProgramCache]: Analyzing trace with hash -125455120, now seen corresponding path program 1 times [2024-11-09 05:41:05,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:05,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942754532] [2024-11-09 05:41:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:05,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:08,210 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 05:41:08,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:08,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942754532] [2024-11-09 05:41:08,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942754532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:08,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:08,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-09 05:41:08,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270451699] [2024-11-09 05:41:08,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:08,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 05:41:08,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:08,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 05:41:08,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:41:08,213 INFO L87 Difference]: Start difference. First operand 9442 states and 13781 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:10,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:10,512 INFO L93 Difference]: Finished difference Result 13782 states and 20098 transitions. [2024-11-09 05:41:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 05:41:10,512 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-09 05:41:10,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:10,531 INFO L225 Difference]: With dead ends: 13782 [2024-11-09 05:41:10,531 INFO L226 Difference]: Without dead ends: 13780 [2024-11-09 05:41:10,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=319, Invalid=1403, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 05:41:10,536 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 1049 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:10,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 1368 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 05:41:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13780 states. [2024-11-09 05:41:10,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13780 to 9453. [2024-11-09 05:41:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9453 states, 9452 states have (on average 1.459585272958104) internal successors, (13796), 9452 states have internal predecessors, (13796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9453 states to 9453 states and 13796 transitions. [2024-11-09 05:41:10,703 INFO L78 Accepts]: Start accepts. Automaton has 9453 states and 13796 transitions. Word has length 70 [2024-11-09 05:41:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:10,703 INFO L471 AbstractCegarLoop]: Abstraction has 9453 states and 13796 transitions. [2024-11-09 05:41:10,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 9453 states and 13796 transitions. [2024-11-09 05:41:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 05:41:10,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:10,706 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:10,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 05:41:10,706 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:10,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1275128656, now seen corresponding path program 1 times [2024-11-09 05:41:10,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:10,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989995699] [2024-11-09 05:41:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:10,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:12,141 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 05:41:12,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:12,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989995699] [2024-11-09 05:41:12,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989995699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:12,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:12,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-09 05:41:12,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528125315] [2024-11-09 05:41:12,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:12,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 05:41:12,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:12,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 05:41:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:41:12,143 INFO L87 Difference]: Start difference. First operand 9453 states and 13796 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:12,983 INFO L93 Difference]: Finished difference Result 15703 states and 22923 transitions. [2024-11-09 05:41:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:41:12,984 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-09 05:41:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:12,997 INFO L225 Difference]: With dead ends: 15703 [2024-11-09 05:41:12,998 INFO L226 Difference]: Without dead ends: 15701 [2024-11-09 05:41:13,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2024-11-09 05:41:13,002 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 799 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:13,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1155 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:41:13,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15701 states. [2024-11-09 05:41:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15701 to 9459. [2024-11-09 05:41:13,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9459 states, 9458 states have (on average 1.4593994502008882) internal successors, (13803), 9458 states have internal predecessors, (13803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 13803 transitions. [2024-11-09 05:41:13,142 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 13803 transitions. Word has length 70 [2024-11-09 05:41:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:13,143 INFO L471 AbstractCegarLoop]: Abstraction has 9459 states and 13803 transitions. [2024-11-09 05:41:13,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 13803 transitions. [2024-11-09 05:41:13,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 05:41:13,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:13,145 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:13,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 05:41:13,146 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:13,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:13,147 INFO L85 PathProgramCache]: Analyzing trace with hash 375832784, now seen corresponding path program 1 times [2024-11-09 05:41:13,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:13,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860776300] [2024-11-09 05:41:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:13,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:15,741 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 05:41:15,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:15,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860776300] [2024-11-09 05:41:15,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860776300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:15,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:15,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-09 05:41:15,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733834300] [2024-11-09 05:41:15,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:15,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 05:41:15,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:15,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 05:41:15,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:41:15,744 INFO L87 Difference]: Start difference. First operand 9459 states and 13803 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:19,286 INFO L93 Difference]: Finished difference Result 18752 states and 27426 transitions. [2024-11-09 05:41:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 05:41:19,287 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-09 05:41:19,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:19,303 INFO L225 Difference]: With dead ends: 18752 [2024-11-09 05:41:19,303 INFO L226 Difference]: Without dead ends: 16926 [2024-11-09 05:41:19,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=300, Invalid=1340, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 05:41:19,310 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 1281 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 3106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 3114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:19,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 2760 Invalid, 3114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3106 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 05:41:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16926 states. [2024-11-09 05:41:19,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16926 to 11011. [2024-11-09 05:41:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11011 states, 11010 states have (on average 1.4573115349682106) internal successors, (16045), 11010 states have internal predecessors, (16045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11011 states to 11011 states and 16045 transitions. [2024-11-09 05:41:19,471 INFO L78 Accepts]: Start accepts. Automaton has 11011 states and 16045 transitions. Word has length 70 [2024-11-09 05:41:19,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:19,471 INFO L471 AbstractCegarLoop]: Abstraction has 11011 states and 16045 transitions. [2024-11-09 05:41:19,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 11011 states and 16045 transitions. [2024-11-09 05:41:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 05:41:19,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:19,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:19,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 05:41:19,475 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:19,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1691518494, now seen corresponding path program 1 times [2024-11-09 05:41:19,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:19,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441117564] [2024-11-09 05:41:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:19,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:19,558 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 05:41:19,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:19,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441117564] [2024-11-09 05:41:19,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441117564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:19,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:19,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:41:19,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231748323] [2024-11-09 05:41:19,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:19,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:19,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:19,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:41:19,561 INFO L87 Difference]: Start difference. First operand 11011 states and 16045 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:19,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:19,699 INFO L93 Difference]: Finished difference Result 19670 states and 28764 transitions. [2024-11-09 05:41:19,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:19,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 05:41:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:19,714 INFO L225 Difference]: With dead ends: 19670 [2024-11-09 05:41:19,715 INFO L226 Difference]: Without dead ends: 10655 [2024-11-09 05:41:19,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:41:19,725 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 128 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:19,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 343 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:41:19,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10655 states. [2024-11-09 05:41:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10655 to 10653. [2024-11-09 05:41:20,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10653 states, 10652 states have (on average 1.4557829515583929) internal successors, (15507), 10652 states have internal predecessors, (15507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10653 states to 10653 states and 15507 transitions. [2024-11-09 05:41:20,033 INFO L78 Accepts]: Start accepts. Automaton has 10653 states and 15507 transitions. Word has length 71 [2024-11-09 05:41:20,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:20,034 INFO L471 AbstractCegarLoop]: Abstraction has 10653 states and 15507 transitions. [2024-11-09 05:41:20,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:20,034 INFO L276 IsEmpty]: Start isEmpty. Operand 10653 states and 15507 transitions. [2024-11-09 05:41:20,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 05:41:20,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:20,037 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:20,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 05:41:20,037 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:20,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash -716986661, now seen corresponding path program 1 times [2024-11-09 05:41:20,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:20,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564033097] [2024-11-09 05:41:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:20,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:20,130 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 05:41:20,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:20,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564033097] [2024-11-09 05:41:20,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564033097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:20,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:20,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:41:20,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912599805] [2024-11-09 05:41:20,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:20,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:20,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:41:20,136 INFO L87 Difference]: Start difference. First operand 10653 states and 15507 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:20,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:20,295 INFO L93 Difference]: Finished difference Result 19776 states and 28925 transitions. [2024-11-09 05:41:20,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:20,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 05:41:20,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:20,313 INFO L225 Difference]: With dead ends: 19776 [2024-11-09 05:41:20,314 INFO L226 Difference]: Without dead ends: 10338 [2024-11-09 05:41:20,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:41:20,326 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 122 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:20,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 333 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:41:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10338 states. [2024-11-09 05:41:20,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10338 to 10287. [2024-11-09 05:41:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10287 states, 10286 states have (on average 1.4546957028971417) internal successors, (14963), 10286 states have internal predecessors, (14963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10287 states to 10287 states and 14963 transitions. [2024-11-09 05:41:20,517 INFO L78 Accepts]: Start accepts. Automaton has 10287 states and 14963 transitions. Word has length 71 [2024-11-09 05:41:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:20,517 INFO L471 AbstractCegarLoop]: Abstraction has 10287 states and 14963 transitions. [2024-11-09 05:41:20,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 10287 states and 14963 transitions. [2024-11-09 05:41:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 05:41:20,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:20,519 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:20,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 05:41:20,520 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:20,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1628523052, now seen corresponding path program 1 times [2024-11-09 05:41:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:20,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761567765] [2024-11-09 05:41:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:20,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:20,589 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 05:41:20,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:20,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761567765] [2024-11-09 05:41:20,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761567765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:20,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:20,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:41:20,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176000190] [2024-11-09 05:41:20,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:20,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:20,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:20,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:20,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:41:20,593 INFO L87 Difference]: Start difference. First operand 10287 states and 14963 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:20,725 INFO L93 Difference]: Finished difference Result 17711 states and 25858 transitions. [2024-11-09 05:41:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:20,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 05:41:20,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:20,739 INFO L225 Difference]: With dead ends: 17711 [2024-11-09 05:41:20,740 INFO L226 Difference]: Without dead ends: 9910 [2024-11-09 05:41:20,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:41:20,750 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 128 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:20,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 327 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:41:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9910 states. [2024-11-09 05:41:20,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9910 to 9908. [2024-11-09 05:41:20,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9908 states, 9907 states have (on average 1.4535177147471485) internal successors, (14400), 9907 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9908 states to 9908 states and 14400 transitions. [2024-11-09 05:41:20,888 INFO L78 Accepts]: Start accepts. Automaton has 9908 states and 14400 transitions. Word has length 71 [2024-11-09 05:41:20,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:20,888 INFO L471 AbstractCegarLoop]: Abstraction has 9908 states and 14400 transitions. [2024-11-09 05:41:20,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:20,889 INFO L276 IsEmpty]: Start isEmpty. Operand 9908 states and 14400 transitions. [2024-11-09 05:41:20,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 05:41:20,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:20,890 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:20,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 05:41:20,891 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:20,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1109308833, now seen corresponding path program 1 times [2024-11-09 05:41:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:20,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591226280] [2024-11-09 05:41:20,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:20,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:20,973 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 05:41:20,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591226280] [2024-11-09 05:41:20,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591226280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:20,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:20,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:41:20,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563148983] [2024-11-09 05:41:20,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:20,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:20,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:41:20,977 INFO L87 Difference]: Start difference. First operand 9908 states and 14400 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:21,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:21,104 INFO L93 Difference]: Finished difference Result 17019 states and 24828 transitions. [2024-11-09 05:41:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:21,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 05:41:21,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:21,117 INFO L225 Difference]: With dead ends: 17019 [2024-11-09 05:41:21,117 INFO L226 Difference]: Without dead ends: 9541 [2024-11-09 05:41:21,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:41:21,127 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 119 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:21,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 327 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:41:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9541 states. [2024-11-09 05:41:21,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9541 to 9539. [2024-11-09 05:41:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9539 states, 9538 states have (on average 1.4527154539735794) internal successors, (13856), 9538 states have internal predecessors, (13856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9539 states to 9539 states and 13856 transitions. [2024-11-09 05:41:21,259 INFO L78 Accepts]: Start accepts. Automaton has 9539 states and 13856 transitions. Word has length 71 [2024-11-09 05:41:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:21,259 INFO L471 AbstractCegarLoop]: Abstraction has 9539 states and 13856 transitions. [2024-11-09 05:41:21,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 9539 states and 13856 transitions. [2024-11-09 05:41:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 05:41:21,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:21,262 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:21,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 05:41:21,262 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:21,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:21,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1946431298, now seen corresponding path program 1 times [2024-11-09 05:41:21,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:21,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719577040] [2024-11-09 05:41:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:21,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:23,430 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 05:41:23,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:23,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719577040] [2024-11-09 05:41:23,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719577040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:23,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:23,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-09 05:41:23,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999335412] [2024-11-09 05:41:23,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:23,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 05:41:23,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 05:41:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:41:23,433 INFO L87 Difference]: Start difference. First operand 9539 states and 13856 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:26,343 INFO L93 Difference]: Finished difference Result 13346 states and 19389 transitions. [2024-11-09 05:41:26,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 05:41:26,345 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 05:41:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:26,356 INFO L225 Difference]: With dead ends: 13346 [2024-11-09 05:41:26,357 INFO L226 Difference]: Without dead ends: 13344 [2024-11-09 05:41:26,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=284, Invalid=1276, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 05:41:26,360 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 748 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 2429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:26,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 2107 Invalid, 2429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2422 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 05:41:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13344 states. [2024-11-09 05:41:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13344 to 9539. [2024-11-09 05:41:26,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9539 states, 9538 states have (on average 1.4527154539735794) internal successors, (13856), 9538 states have internal predecessors, (13856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:26,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9539 states to 9539 states and 13856 transitions. [2024-11-09 05:41:26,513 INFO L78 Accepts]: Start accepts. Automaton has 9539 states and 13856 transitions. Word has length 71 [2024-11-09 05:41:26,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:26,514 INFO L471 AbstractCegarLoop]: Abstraction has 9539 states and 13856 transitions. [2024-11-09 05:41:26,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:26,514 INFO L276 IsEmpty]: Start isEmpty. Operand 9539 states and 13856 transitions. [2024-11-09 05:41:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 05:41:26,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:26,516 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:26,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 05:41:26,517 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:26,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1198862462, now seen corresponding path program 1 times [2024-11-09 05:41:26,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:26,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110936934] [2024-11-09 05:41:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:28,126 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 05:41:28,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:28,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110936934] [2024-11-09 05:41:28,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110936934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:28,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:28,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-09 05:41:28,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777972775] [2024-11-09 05:41:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:28,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 05:41:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 05:41:28,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:41:28,129 INFO L87 Difference]: Start difference. First operand 9539 states and 13856 transitions. Second operand has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:29,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:29,349 INFO L93 Difference]: Finished difference Result 12256 states and 17776 transitions. [2024-11-09 05:41:29,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:41:29,350 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 05:41:29,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:29,360 INFO L225 Difference]: With dead ends: 12256 [2024-11-09 05:41:29,361 INFO L226 Difference]: Without dead ends: 12254 [2024-11-09 05:41:29,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2024-11-09 05:41:29,364 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 537 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:29,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1801 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:41:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12254 states. [2024-11-09 05:41:29,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12254 to 9539. [2024-11-09 05:41:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9539 states, 9538 states have (on average 1.4527154539735794) internal successors, (13856), 9538 states have internal predecessors, (13856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9539 states to 9539 states and 13856 transitions. [2024-11-09 05:41:29,470 INFO L78 Accepts]: Start accepts. Automaton has 9539 states and 13856 transitions. Word has length 71 [2024-11-09 05:41:29,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:29,470 INFO L471 AbstractCegarLoop]: Abstraction has 9539 states and 13856 transitions. [2024-11-09 05:41:29,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand 9539 states and 13856 transitions. [2024-11-09 05:41:29,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 05:41:29,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:29,472 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:29,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 05:41:29,472 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:29,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:29,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1445143394, now seen corresponding path program 1 times [2024-11-09 05:41:29,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:29,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628933441] [2024-11-09 05:41:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:29,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:31,027 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 05:41:31,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:31,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628933441] [2024-11-09 05:41:31,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628933441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:31,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:31,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-09 05:41:31,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766231263] [2024-11-09 05:41:31,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:31,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 05:41:31,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:31,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 05:41:31,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:41:31,030 INFO L87 Difference]: Start difference. First operand 9539 states and 13856 transitions. Second operand has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:31,926 INFO L93 Difference]: Finished difference Result 16123 states and 23476 transitions. [2024-11-09 05:41:31,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:41:31,927 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 05:41:31,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:31,942 INFO L225 Difference]: With dead ends: 16123 [2024-11-09 05:41:31,942 INFO L226 Difference]: Without dead ends: 14489 [2024-11-09 05:41:31,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2024-11-09 05:41:31,948 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 507 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:31,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1900 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:41:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14489 states. [2024-11-09 05:41:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14489 to 8897. [2024-11-09 05:41:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8897 states, 8896 states have (on average 1.448853417266187) internal successors, (12889), 8896 states have internal predecessors, (12889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8897 states to 8897 states and 12889 transitions. [2024-11-09 05:41:32,107 INFO L78 Accepts]: Start accepts. Automaton has 8897 states and 12889 transitions. Word has length 71 [2024-11-09 05:41:32,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:32,108 INFO L471 AbstractCegarLoop]: Abstraction has 8897 states and 12889 transitions. [2024-11-09 05:41:32,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:32,108 INFO L276 IsEmpty]: Start isEmpty. Operand 8897 states and 12889 transitions. [2024-11-09 05:41:32,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 05:41:32,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:32,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:32,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 05:41:32,111 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:32,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash 604114142, now seen corresponding path program 1 times [2024-11-09 05:41:32,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:32,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764258312] [2024-11-09 05:41:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:32,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:33,972 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 05:41:33,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:33,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764258312] [2024-11-09 05:41:33,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764258312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:33,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:33,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-09 05:41:33,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409515343] [2024-11-09 05:41:33,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:33,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 05:41:33,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:33,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 05:41:33,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:41:33,975 INFO L87 Difference]: Start difference. First operand 8897 states and 12889 transitions. Second operand has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:35,139 INFO L93 Difference]: Finished difference Result 13215 states and 19174 transitions. [2024-11-09 05:41:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 05:41:35,140 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-09 05:41:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:35,152 INFO L225 Difference]: With dead ends: 13215 [2024-11-09 05:41:35,152 INFO L226 Difference]: Without dead ends: 13213 [2024-11-09 05:41:35,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2024-11-09 05:41:35,155 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 423 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:35,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 2211 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:41:35,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13213 states. [2024-11-09 05:41:35,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13213 to 9539. [2024-11-09 05:41:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9539 states, 9538 states have (on average 1.450199203187251) internal successors, (13832), 9538 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9539 states to 9539 states and 13832 transitions. [2024-11-09 05:41:35,258 INFO L78 Accepts]: Start accepts. Automaton has 9539 states and 13832 transitions. Word has length 71 [2024-11-09 05:41:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:35,258 INFO L471 AbstractCegarLoop]: Abstraction has 9539 states and 13832 transitions. [2024-11-09 05:41:35,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 9539 states and 13832 transitions. [2024-11-09 05:41:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 05:41:35,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:35,260 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:35,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 05:41:35,260 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:35,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -564635516, now seen corresponding path program 1 times [2024-11-09 05:41:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:35,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547452483] [2024-11-09 05:41:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:38,651 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 05:41:38,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547452483] [2024-11-09 05:41:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547452483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:38,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:38,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2024-11-09 05:41:38,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507760444] [2024-11-09 05:41:38,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:38,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:41:38,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:38,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:41:38,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:41:38,654 INFO L87 Difference]: Start difference. First operand 9539 states and 13832 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:41,996 INFO L93 Difference]: Finished difference Result 11215 states and 16216 transitions. [2024-11-09 05:41:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 05:41:41,997 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-09 05:41:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:42,006 INFO L225 Difference]: With dead ends: 11215 [2024-11-09 05:41:42,006 INFO L226 Difference]: Without dead ends: 11213 [2024-11-09 05:41:42,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=338, Invalid=1384, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 05:41:42,009 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 692 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:42,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1790 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 05:41:42,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11213 states. [2024-11-09 05:41:42,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11213 to 9545. [2024-11-09 05:41:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9545 states, 9544 states have (on average 1.4500209555741828) internal successors, (13839), 9544 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9545 states to 9545 states and 13839 transitions. [2024-11-09 05:41:42,160 INFO L78 Accepts]: Start accepts. Automaton has 9545 states and 13839 transitions. Word has length 72 [2024-11-09 05:41:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:42,160 INFO L471 AbstractCegarLoop]: Abstraction has 9545 states and 13839 transitions. [2024-11-09 05:41:42,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:42,161 INFO L276 IsEmpty]: Start isEmpty. Operand 9545 states and 13839 transitions. [2024-11-09 05:41:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 05:41:42,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:42,162 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:42,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 05:41:42,162 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:42,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 685109444, now seen corresponding path program 1 times [2024-11-09 05:41:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:42,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104250629] [2024-11-09 05:41:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:42,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:43,889 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 05:41:43,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:43,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104250629] [2024-11-09 05:41:43,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104250629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:43,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:43,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-09 05:41:43,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527555843] [2024-11-09 05:41:43,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:43,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 05:41:43,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:43,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 05:41:43,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:41:43,892 INFO L87 Difference]: Start difference. First operand 9545 states and 13839 transitions. Second operand has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:45,011 INFO L93 Difference]: Finished difference Result 12314 states and 17815 transitions. [2024-11-09 05:41:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 05:41:45,012 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-09 05:41:45,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:45,028 INFO L225 Difference]: With dead ends: 12314 [2024-11-09 05:41:45,029 INFO L226 Difference]: Without dead ends: 12312 [2024-11-09 05:41:45,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2024-11-09 05:41:45,034 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 618 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:45,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1739 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:41:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12312 states. [2024-11-09 05:41:45,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12312 to 9551. [2024-11-09 05:41:45,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9551 states, 9550 states have (on average 1.4498429319371728) internal successors, (13846), 9550 states have internal predecessors, (13846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9551 states to 9551 states and 13846 transitions. [2024-11-09 05:41:45,221 INFO L78 Accepts]: Start accepts. Automaton has 9551 states and 13846 transitions. Word has length 72 [2024-11-09 05:41:45,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:45,221 INFO L471 AbstractCegarLoop]: Abstraction has 9551 states and 13846 transitions. [2024-11-09 05:41:45,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:45,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9551 states and 13846 transitions. [2024-11-09 05:41:45,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 05:41:45,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:45,223 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:45,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-09 05:41:45,224 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:45,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1958896412, now seen corresponding path program 1 times [2024-11-09 05:41:45,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:45,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117909362] [2024-11-09 05:41:45,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:45,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:48,272 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 05:41:48,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:48,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117909362] [2024-11-09 05:41:48,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117909362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:48,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:48,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-09 05:41:48,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481279389] [2024-11-09 05:41:48,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:48,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 05:41:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:48,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 05:41:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2024-11-09 05:41:48,274 INFO L87 Difference]: Start difference. First operand 9551 states and 13846 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:51,370 INFO L93 Difference]: Finished difference Result 10770 states and 15607 transitions. [2024-11-09 05:41:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 05:41:51,370 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-09 05:41:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:51,379 INFO L225 Difference]: With dead ends: 10770 [2024-11-09 05:41:51,379 INFO L226 Difference]: Without dead ends: 9968 [2024-11-09 05:41:51,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=356, Invalid=1450, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 05:41:51,382 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 762 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:51,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 2645 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 05:41:51,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9968 states. [2024-11-09 05:41:51,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9968 to 9935. [2024-11-09 05:41:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9934 states have (on average 1.4482585061405275) internal successors, (14387), 9934 states have internal predecessors, (14387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 14387 transitions. [2024-11-09 05:41:51,475 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 14387 transitions. Word has length 72 [2024-11-09 05:41:51,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:51,476 INFO L471 AbstractCegarLoop]: Abstraction has 9935 states and 14387 transitions. [2024-11-09 05:41:51,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 14387 transitions. [2024-11-09 05:41:51,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 05:41:51,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:51,477 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:51,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-09 05:41:51,478 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:51,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:51,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1386448036, now seen corresponding path program 1 times [2024-11-09 05:41:51,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:51,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588704790] [2024-11-09 05:41:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:51,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:54,536 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 05:41:54,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:54,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588704790] [2024-11-09 05:41:54,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588704790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:54,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:54,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2024-11-09 05:41:54,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056750327] [2024-11-09 05:41:54,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:54,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 05:41:54,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 05:41:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2024-11-09 05:41:54,538 INFO L87 Difference]: Start difference. First operand 9935 states and 14387 transitions. Second operand has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:59,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:59,726 INFO L93 Difference]: Finished difference Result 11586 states and 16759 transitions. [2024-11-09 05:41:59,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 05:41:59,727 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-09 05:41:59,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:59,737 INFO L225 Difference]: With dead ends: 11586 [2024-11-09 05:41:59,737 INFO L226 Difference]: Without dead ends: 11584 [2024-11-09 05:41:59,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=458, Invalid=1992, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 05:41:59,741 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 985 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 3910 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 3916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:59,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 2824 Invalid, 3916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3910 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 05:41:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11584 states. [2024-11-09 05:41:59,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11584 to 9935. [2024-11-09 05:41:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9934 states have (on average 1.4482585061405275) internal successors, (14387), 9934 states have internal predecessors, (14387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 14387 transitions. [2024-11-09 05:41:59,843 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 14387 transitions. Word has length 72 [2024-11-09 05:41:59,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:59,843 INFO L471 AbstractCegarLoop]: Abstraction has 9935 states and 14387 transitions. [2024-11-09 05:41:59,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 14387 transitions. [2024-11-09 05:41:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 05:41:59,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:59,845 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:59,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-09 05:41:59,846 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:59,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1221308142, now seen corresponding path program 1 times [2024-11-09 05:41:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:59,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907728877] [2024-11-09 05:41:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:59,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:01,805 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 05:42:01,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:01,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907728877] [2024-11-09 05:42:01,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907728877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:01,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:01,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2024-11-09 05:42:01,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352224828] [2024-11-09 05:42:01,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:01,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:42:01,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:01,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:42:01,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:42:01,808 INFO L87 Difference]: Start difference. First operand 9935 states and 14387 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:04,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:04,683 INFO L93 Difference]: Finished difference Result 11608 states and 16768 transitions. [2024-11-09 05:42:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 05:42:04,684 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-09 05:42:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:04,698 INFO L225 Difference]: With dead ends: 11608 [2024-11-09 05:42:04,698 INFO L226 Difference]: Without dead ends: 11606 [2024-11-09 05:42:04,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 05:42:04,702 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 828 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:04,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1590 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 05:42:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11606 states. [2024-11-09 05:42:04,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11606 to 9931. [2024-11-09 05:42:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9931 states, 9930 states have (on average 1.4483383685800604) internal successors, (14382), 9930 states have internal predecessors, (14382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:04,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9931 states to 9931 states and 14382 transitions. [2024-11-09 05:42:04,845 INFO L78 Accepts]: Start accepts. Automaton has 9931 states and 14382 transitions. Word has length 73 [2024-11-09 05:42:04,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:04,845 INFO L471 AbstractCegarLoop]: Abstraction has 9931 states and 14382 transitions. [2024-11-09 05:42:04,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:04,846 INFO L276 IsEmpty]: Start isEmpty. Operand 9931 states and 14382 transitions. [2024-11-09 05:42:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 05:42:04,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:04,847 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:04,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-09 05:42:04,848 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:04,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash 429653298, now seen corresponding path program 1 times [2024-11-09 05:42:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527092900] [2024-11-09 05:42:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:04,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:07,466 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 05:42:07,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:07,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527092900] [2024-11-09 05:42:07,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527092900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:07,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:07,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-09 05:42:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250017416] [2024-11-09 05:42:07,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:07,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 05:42:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:07,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 05:42:07,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2024-11-09 05:42:07,468 INFO L87 Difference]: Start difference. First operand 9931 states and 14382 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:10,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:10,713 INFO L93 Difference]: Finished difference Result 12298 states and 17795 transitions. [2024-11-09 05:42:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 05:42:10,714 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-09 05:42:10,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:10,723 INFO L225 Difference]: With dead ends: 12298 [2024-11-09 05:42:10,724 INFO L226 Difference]: Without dead ends: 11480 [2024-11-09 05:42:10,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=373, Invalid=1519, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 05:42:10,727 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 1184 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:10,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1318 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 05:42:10,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11480 states. [2024-11-09 05:42:10,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11480 to 9931. [2024-11-09 05:42:10,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9931 states, 9930 states have (on average 1.4483383685800604) internal successors, (14382), 9930 states have internal predecessors, (14382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9931 states to 9931 states and 14382 transitions. [2024-11-09 05:42:10,831 INFO L78 Accepts]: Start accepts. Automaton has 9931 states and 14382 transitions. Word has length 73 [2024-11-09 05:42:10,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:10,832 INFO L471 AbstractCegarLoop]: Abstraction has 9931 states and 14382 transitions. [2024-11-09 05:42:10,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 9931 states and 14382 transitions. [2024-11-09 05:42:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 05:42:10,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:10,833 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:10,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-09 05:42:10,834 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:10,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:10,834 INFO L85 PathProgramCache]: Analyzing trace with hash -519969550, now seen corresponding path program 1 times [2024-11-09 05:42:10,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:10,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236426486] [2024-11-09 05:42:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:10,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:13,559 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 05:42:13,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:13,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236426486] [2024-11-09 05:42:13,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236426486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:13,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:13,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-09 05:42:13,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647059811] [2024-11-09 05:42:13,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:13,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 05:42:13,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 05:42:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2024-11-09 05:42:13,562 INFO L87 Difference]: Start difference. First operand 9931 states and 14382 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:17,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:17,779 INFO L93 Difference]: Finished difference Result 11585 states and 16757 transitions. [2024-11-09 05:42:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 05:42:17,779 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-09 05:42:17,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:17,790 INFO L225 Difference]: With dead ends: 11585 [2024-11-09 05:42:17,790 INFO L226 Difference]: Without dead ends: 11583 [2024-11-09 05:42:17,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=376, Invalid=1516, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 05:42:17,794 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 902 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 3457 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:17,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 3457 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 05:42:17,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11583 states. [2024-11-09 05:42:17,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11583 to 9931. [2024-11-09 05:42:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9931 states, 9930 states have (on average 1.4483383685800604) internal successors, (14382), 9930 states have internal predecessors, (14382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:17,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9931 states to 9931 states and 14382 transitions. [2024-11-09 05:42:17,900 INFO L78 Accepts]: Start accepts. Automaton has 9931 states and 14382 transitions. Word has length 73 [2024-11-09 05:42:17,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:17,900 INFO L471 AbstractCegarLoop]: Abstraction has 9931 states and 14382 transitions. [2024-11-09 05:42:17,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand 9931 states and 14382 transitions. [2024-11-09 05:42:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 05:42:17,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:17,902 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:17,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-09 05:42:17,902 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:17,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:17,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1423792782, now seen corresponding path program 1 times [2024-11-09 05:42:17,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:17,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259540654] [2024-11-09 05:42:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:17,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:21,712 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 05:42:21,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259540654] [2024-11-09 05:42:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259540654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:21,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:21,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2024-11-09 05:42:21,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262798507] [2024-11-09 05:42:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:21,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 05:42:21,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 05:42:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2024-11-09 05:42:21,714 INFO L87 Difference]: Start difference. First operand 9931 states and 14382 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:27,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:27,890 INFO L93 Difference]: Finished difference Result 11845 states and 17179 transitions. [2024-11-09 05:42:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 05:42:27,891 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-09 05:42:27,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:27,901 INFO L225 Difference]: With dead ends: 11845 [2024-11-09 05:42:27,901 INFO L226 Difference]: Without dead ends: 11843 [2024-11-09 05:42:27,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=523, Invalid=2339, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 05:42:27,905 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 841 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 3018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:27,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 2088 Invalid, 3018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 05:42:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2024-11-09 05:42:27,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 9921. [2024-11-09 05:42:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9921 states, 9920 states have (on average 1.448790322580645) internal successors, (14372), 9920 states have internal predecessors, (14372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:28,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9921 states to 9921 states and 14372 transitions. [2024-11-09 05:42:28,005 INFO L78 Accepts]: Start accepts. Automaton has 9921 states and 14372 transitions. Word has length 73 [2024-11-09 05:42:28,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:28,006 INFO L471 AbstractCegarLoop]: Abstraction has 9921 states and 14372 transitions. [2024-11-09 05:42:28,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:28,006 INFO L276 IsEmpty]: Start isEmpty. Operand 9921 states and 14372 transitions. [2024-11-09 05:42:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 05:42:28,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:28,008 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:28,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-09 05:42:28,008 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:28,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1721500978, now seen corresponding path program 1 times [2024-11-09 05:42:28,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:28,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922995949] [2024-11-09 05:42:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:28,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:33,122 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 05:42:33,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:33,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922995949] [2024-11-09 05:42:33,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922995949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:33,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:33,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2024-11-09 05:42:33,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137302236] [2024-11-09 05:42:33,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:33,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 05:42:33,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 05:42:33,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2024-11-09 05:42:33,125 INFO L87 Difference]: Start difference. First operand 9921 states and 14372 transitions. Second operand has 32 states, 32 states have (on average 2.28125) internal successors, (73), 31 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:40,120 INFO L93 Difference]: Finished difference Result 10771 states and 15583 transitions. [2024-11-09 05:42:40,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 05:42:40,121 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 31 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-09 05:42:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:40,130 INFO L225 Difference]: With dead ends: 10771 [2024-11-09 05:42:40,130 INFO L226 Difference]: Without dead ends: 10769 [2024-11-09 05:42:40,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=665, Invalid=2641, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 05:42:40,134 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 1071 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 2955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:40,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1966 Invalid, 2955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 05:42:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10769 states. [2024-11-09 05:42:40,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10769 to 9921. [2024-11-09 05:42:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9921 states, 9920 states have (on average 1.448790322580645) internal successors, (14372), 9920 states have internal predecessors, (14372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9921 states to 9921 states and 14372 transitions. [2024-11-09 05:42:40,234 INFO L78 Accepts]: Start accepts. Automaton has 9921 states and 14372 transitions. Word has length 73 [2024-11-09 05:42:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:40,234 INFO L471 AbstractCegarLoop]: Abstraction has 9921 states and 14372 transitions. [2024-11-09 05:42:40,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 31 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 9921 states and 14372 transitions. [2024-11-09 05:42:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 05:42:40,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:40,236 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:40,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-09 05:42:40,236 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:40,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash -922504878, now seen corresponding path program 1 times [2024-11-09 05:42:40,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:40,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725795051] [2024-11-09 05:42:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:40,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:41,575 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 05:42:41,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:41,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725795051] [2024-11-09 05:42:41,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725795051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:41,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:41,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-09 05:42:41,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861922737] [2024-11-09 05:42:41,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:41,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 05:42:41,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:41,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 05:42:41,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:42:41,577 INFO L87 Difference]: Start difference. First operand 9921 states and 14372 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:43,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:43,094 INFO L93 Difference]: Finished difference Result 16974 states and 24604 transitions. [2024-11-09 05:42:43,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 05:42:43,095 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-09 05:42:43,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:43,111 INFO L225 Difference]: With dead ends: 16974 [2024-11-09 05:42:43,111 INFO L226 Difference]: Without dead ends: 15340 [2024-11-09 05:42:43,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2024-11-09 05:42:43,116 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 534 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:43,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 2088 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 05:42:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15340 states. [2024-11-09 05:42:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15340 to 9265. [2024-11-09 05:42:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9265 states, 9264 states have (on average 1.447970639032815) internal successors, (13414), 9264 states have internal predecessors, (13414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9265 states to 9265 states and 13414 transitions. [2024-11-09 05:42:43,225 INFO L78 Accepts]: Start accepts. Automaton has 9265 states and 13414 transitions. Word has length 73 [2024-11-09 05:42:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:43,226 INFO L471 AbstractCegarLoop]: Abstraction has 9265 states and 13414 transitions. [2024-11-09 05:42:43,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 9265 states and 13414 transitions. [2024-11-09 05:42:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 05:42:43,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:43,228 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:43,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-09 05:42:43,229 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:43,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:43,229 INFO L85 PathProgramCache]: Analyzing trace with hash -315380808, now seen corresponding path program 1 times [2024-11-09 05:42:43,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:43,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798752811] [2024-11-09 05:42:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:43,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:48,947 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 05:42:48,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:48,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798752811] [2024-11-09 05:42:48,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798752811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:48,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:48,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2024-11-09 05:42:48,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288723015] [2024-11-09 05:42:48,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:48,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 05:42:48,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:48,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 05:42:48,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2024-11-09 05:42:48,950 INFO L87 Difference]: Start difference. First operand 9265 states and 13414 transitions. Second operand has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:56,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:56,533 INFO L93 Difference]: Finished difference Result 10979 states and 15839 transitions. [2024-11-09 05:42:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 05:42:56,534 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-09 05:42:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:56,543 INFO L225 Difference]: With dead ends: 10979 [2024-11-09 05:42:56,544 INFO L226 Difference]: Without dead ends: 10977 [2024-11-09 05:42:56,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=593, Invalid=2377, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 05:42:56,548 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 790 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:56,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 2023 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 05:42:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10977 states. [2024-11-09 05:42:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10977 to 9265. [2024-11-09 05:42:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9265 states, 9264 states have (on average 1.447970639032815) internal successors, (13414), 9264 states have internal predecessors, (13414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9265 states to 9265 states and 13414 transitions. [2024-11-09 05:42:56,686 INFO L78 Accepts]: Start accepts. Automaton has 9265 states and 13414 transitions. Word has length 74 [2024-11-09 05:42:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:56,686 INFO L471 AbstractCegarLoop]: Abstraction has 9265 states and 13414 transitions. [2024-11-09 05:42:56,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 9265 states and 13414 transitions. [2024-11-09 05:42:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 05:42:56,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:56,688 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:56,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-09 05:42:56,688 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:56,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:56,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1568354438, now seen corresponding path program 1 times [2024-11-09 05:42:56,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:56,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143883005] [2024-11-09 05:42:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:56,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:05,618 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 05:43:05,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:43:05,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143883005] [2024-11-09 05:43:05,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143883005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:43:05,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:43:05,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2024-11-09 05:43:05,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971817626] [2024-11-09 05:43:05,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:43:05,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-09 05:43:05,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:43:05,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-09 05:43:05,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1375, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 05:43:05,621 INFO L87 Difference]: Start difference. First operand 9265 states and 13414 transitions. Second operand has 39 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 38 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:20,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:43:20,447 INFO L93 Difference]: Finished difference Result 10166 states and 14681 transitions. [2024-11-09 05:43:20,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 05:43:20,448 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 38 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-09 05:43:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:43:20,456 INFO L225 Difference]: With dead ends: 10166 [2024-11-09 05:43:20,456 INFO L226 Difference]: Without dead ends: 10164 [2024-11-09 05:43:20,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=885, Invalid=3807, Unknown=0, NotChecked=0, Total=4692 [2024-11-09 05:43:20,459 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 1377 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 4455 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 4461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:43:20,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 2818 Invalid, 4461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4455 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-09 05:43:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10164 states. [2024-11-09 05:43:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10164 to 9259. [2024-11-09 05:43:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9259 states, 9258 states have (on average 1.448152948801037) internal successors, (13407), 9258 states have internal predecessors, (13407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9259 states to 9259 states and 13407 transitions. [2024-11-09 05:43:20,547 INFO L78 Accepts]: Start accepts. Automaton has 9259 states and 13407 transitions. Word has length 75 [2024-11-09 05:43:20,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:43:20,547 INFO L471 AbstractCegarLoop]: Abstraction has 9259 states and 13407 transitions. [2024-11-09 05:43:20,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 38 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:20,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9259 states and 13407 transitions. [2024-11-09 05:43:20,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 05:43:20,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:43:20,549 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:20,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-09 05:43:20,549 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:43:20,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:43:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1476867898, now seen corresponding path program 1 times [2024-11-09 05:43:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:43:20,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710874732] [2024-11-09 05:43:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:20,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:43:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:25,780 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 05:43:25,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:43:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710874732] [2024-11-09 05:43:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710874732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:43:25,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:43:25,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2024-11-09 05:43:25,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130070446] [2024-11-09 05:43:25,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:43:25,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 05:43:25,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:43:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 05:43:25,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 05:43:25,783 INFO L87 Difference]: Start difference. First operand 9259 states and 13407 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:43:34,498 INFO L93 Difference]: Finished difference Result 10147 states and 14659 transitions. [2024-11-09 05:43:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 05:43:34,498 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-09 05:43:34,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:43:34,507 INFO L225 Difference]: With dead ends: 10147 [2024-11-09 05:43:34,507 INFO L226 Difference]: Without dead ends: 10145 [2024-11-09 05:43:34,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=750, Invalid=2910, Unknown=0, NotChecked=0, Total=3660 [2024-11-09 05:43:34,511 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 1074 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 3048 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:43:34,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 3106 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3048 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 05:43:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10145 states. [2024-11-09 05:43:34,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10145 to 9255. [2024-11-09 05:43:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9255 states, 9254 states have (on average 1.44823859952453) internal successors, (13402), 9254 states have internal predecessors, (13402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:34,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 13402 transitions. [2024-11-09 05:43:34,600 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 13402 transitions. Word has length 75 [2024-11-09 05:43:34,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:43:34,600 INFO L471 AbstractCegarLoop]: Abstraction has 9255 states and 13402 transitions. [2024-11-09 05:43:34,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:34,600 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 13402 transitions. [2024-11-09 05:43:34,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 05:43:34,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:43:34,601 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:34,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-09 05:43:34,602 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:43:34,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:43:34,602 INFO L85 PathProgramCache]: Analyzing trace with hash 174093542, now seen corresponding path program 1 times [2024-11-09 05:43:34,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:43:34,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046553594] [2024-11-09 05:43:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:34,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:43:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:40,107 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 05:43:40,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:43:40,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046553594] [2024-11-09 05:43:40,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046553594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:43:40,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:43:40,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2024-11-09 05:43:40,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599162715] [2024-11-09 05:43:40,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:43:40,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 05:43:40,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:43:40,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 05:43:40,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 05:43:40,109 INFO L87 Difference]: Start difference. First operand 9255 states and 13402 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:47,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:43:47,825 INFO L93 Difference]: Finished difference Result 11241 states and 16273 transitions. [2024-11-09 05:43:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 05:43:47,825 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-09 05:43:47,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:43:47,834 INFO L225 Difference]: With dead ends: 11241 [2024-11-09 05:43:47,834 INFO L226 Difference]: Without dead ends: 10423 [2024-11-09 05:43:47,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=632, Invalid=2560, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 05:43:47,838 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 821 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:43:47,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2375 Invalid, 3282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3273 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 05:43:47,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10423 states. [2024-11-09 05:43:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10423 to 9239. [2024-11-09 05:43:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9239 states, 9238 states have (on average 1.4489066897596883) internal successors, (13385), 9238 states have internal predecessors, (13385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9239 states to 9239 states and 13385 transitions. [2024-11-09 05:43:47,929 INFO L78 Accepts]: Start accepts. Automaton has 9239 states and 13385 transitions. Word has length 75 [2024-11-09 05:43:47,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:43:47,929 INFO L471 AbstractCegarLoop]: Abstraction has 9239 states and 13385 transitions. [2024-11-09 05:43:47,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:47,929 INFO L276 IsEmpty]: Start isEmpty. Operand 9239 states and 13385 transitions. [2024-11-09 05:43:47,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 05:43:47,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:43:47,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:47,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-09 05:43:47,931 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:43:47,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:43:47,932 INFO L85 PathProgramCache]: Analyzing trace with hash -775529306, now seen corresponding path program 1 times [2024-11-09 05:43:47,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:43:47,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103871020] [2024-11-09 05:43:47,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:47,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:43:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:53,832 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 05:43:53,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:43:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103871020] [2024-11-09 05:43:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103871020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:43:53,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:43:53,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2024-11-09 05:43:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687704432] [2024-11-09 05:43:53,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:43:53,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 05:43:53,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:43:53,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 05:43:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2024-11-09 05:43:53,834 INFO L87 Difference]: Start difference. First operand 9239 states and 13385 transitions. Second operand has 32 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:44:02,336 INFO L93 Difference]: Finished difference Result 10142 states and 14653 transitions. [2024-11-09 05:44:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 05:44:02,337 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-09 05:44:02,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:44:02,345 INFO L225 Difference]: With dead ends: 10142 [2024-11-09 05:44:02,345 INFO L226 Difference]: Without dead ends: 10140 [2024-11-09 05:44:02,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=594, Invalid=2376, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 05:44:02,349 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 891 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 3370 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 3376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:44:02,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 2093 Invalid, 3376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3370 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 05:44:02,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10140 states. [2024-11-09 05:44:02,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10140 to 9235. [2024-11-09 05:44:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9235 states, 9234 states have (on average 1.4489928525016245) internal successors, (13380), 9234 states have internal predecessors, (13380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:02,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9235 states to 9235 states and 13380 transitions. [2024-11-09 05:44:02,438 INFO L78 Accepts]: Start accepts. Automaton has 9235 states and 13380 transitions. Word has length 75 [2024-11-09 05:44:02,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:44:02,438 INFO L471 AbstractCegarLoop]: Abstraction has 9235 states and 13380 transitions. [2024-11-09 05:44:02,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:02,439 INFO L276 IsEmpty]: Start isEmpty. Operand 9235 states and 13380 transitions. [2024-11-09 05:44:02,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 05:44:02,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:44:02,440 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:02,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-09 05:44:02,440 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:44:02,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:44:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash 788564794, now seen corresponding path program 1 times [2024-11-09 05:44:02,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:44:02,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088002285] [2024-11-09 05:44:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:02,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:44:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:16,055 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 05:44:16,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:16,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088002285] [2024-11-09 05:44:16,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088002285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:44:16,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:44:16,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2024-11-09 05:44:16,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604409611] [2024-11-09 05:44:16,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:44:16,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 05:44:16,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:44:16,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 05:44:16,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1674, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 05:44:16,057 INFO L87 Difference]: Start difference. First operand 9235 states and 13380 transitions. Second operand has 43 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 42 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:36,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:44:36,295 INFO L93 Difference]: Finished difference Result 10124 states and 14637 transitions. [2024-11-09 05:44:36,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-09 05:44:36,296 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 42 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-09 05:44:36,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:44:36,303 INFO L225 Difference]: With dead ends: 10124 [2024-11-09 05:44:36,304 INFO L226 Difference]: Without dead ends: 10122 [2024-11-09 05:44:36,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=1203, Invalid=4649, Unknown=0, NotChecked=0, Total=5852 [2024-11-09 05:44:36,306 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 877 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 5088 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 5089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:44:36,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 2931 Invalid, 5089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5088 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-09 05:44:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10122 states. [2024-11-09 05:44:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10122 to 9211. [2024-11-09 05:44:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9211 states, 9210 states have (on average 1.4499457111834961) internal successors, (13354), 9210 states have internal predecessors, (13354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9211 states to 9211 states and 13354 transitions. [2024-11-09 05:44:36,384 INFO L78 Accepts]: Start accepts. Automaton has 9211 states and 13354 transitions. Word has length 77 [2024-11-09 05:44:36,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:44:36,384 INFO L471 AbstractCegarLoop]: Abstraction has 9211 states and 13354 transitions. [2024-11-09 05:44:36,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 42 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:36,385 INFO L276 IsEmpty]: Start isEmpty. Operand 9211 states and 13354 transitions. [2024-11-09 05:44:36,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 05:44:36,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:44:36,386 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:44:36,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-09 05:44:36,386 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:44:36,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:44:36,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1594694739, now seen corresponding path program 1 times [2024-11-09 05:44:36,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:44:36,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873152432] [2024-11-09 05:44:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:36,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:44:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:44:36,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:36,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873152432] [2024-11-09 05:44:36,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873152432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:44:36,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:44:36,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:44:36,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169507264] [2024-11-09 05:44:36,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:44:36,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:44:36,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:44:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:44:36,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:36,489 INFO L87 Difference]: Start difference. First operand 9211 states and 13354 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:36,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:44:36,570 INFO L93 Difference]: Finished difference Result 16185 states and 23682 transitions. [2024-11-09 05:44:36,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:44:36,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-09 05:44:36,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:44:36,582 INFO L225 Difference]: With dead ends: 16185 [2024-11-09 05:44:36,582 INFO L226 Difference]: Without dead ends: 12775 [2024-11-09 05:44:36,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:36,587 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 89 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:44:36,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 390 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:44:36,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2024-11-09 05:44:36,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 12215. [2024-11-09 05:44:36,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12215 states, 12214 states have (on average 1.4486654658588505) internal successors, (17694), 12214 states have internal predecessors, (17694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:36,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12215 states to 12215 states and 17694 transitions. [2024-11-09 05:44:36,704 INFO L78 Accepts]: Start accepts. Automaton has 12215 states and 17694 transitions. Word has length 79 [2024-11-09 05:44:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:44:36,704 INFO L471 AbstractCegarLoop]: Abstraction has 12215 states and 17694 transitions. [2024-11-09 05:44:36,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:36,704 INFO L276 IsEmpty]: Start isEmpty. Operand 12215 states and 17694 transitions. [2024-11-09 05:44:36,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 05:44:36,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:44:36,706 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:44:36,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-09 05:44:36,707 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:44:36,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:44:36,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1372002556, now seen corresponding path program 1 times [2024-11-09 05:44:36,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:44:36,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955671320] [2024-11-09 05:44:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:36,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:44:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:44:36,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:36,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955671320] [2024-11-09 05:44:36,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955671320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:44:36,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:44:36,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:44:36,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793326260] [2024-11-09 05:44:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:44:36,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:44:36,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:44:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:44:36,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:36,810 INFO L87 Difference]: Start difference. First operand 12215 states and 17694 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:44:36,901 INFO L93 Difference]: Finished difference Result 22169 states and 32364 transitions. [2024-11-09 05:44:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:44:36,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-09 05:44:36,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:44:36,915 INFO L225 Difference]: With dead ends: 22169 [2024-11-09 05:44:36,915 INFO L226 Difference]: Without dead ends: 15831 [2024-11-09 05:44:36,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:36,922 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 85 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:44:36,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 372 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:44:36,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15831 states. [2024-11-09 05:44:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15831 to 14879. [2024-11-09 05:44:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14879 states, 14878 states have (on average 1.4473047452614598) internal successors, (21533), 14878 states have internal predecessors, (21533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14879 states to 14879 states and 21533 transitions. [2024-11-09 05:44:37,124 INFO L78 Accepts]: Start accepts. Automaton has 14879 states and 21533 transitions. Word has length 81 [2024-11-09 05:44:37,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:44:37,124 INFO L471 AbstractCegarLoop]: Abstraction has 14879 states and 21533 transitions. [2024-11-09 05:44:37,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:37,125 INFO L276 IsEmpty]: Start isEmpty. Operand 14879 states and 21533 transitions. [2024-11-09 05:44:37,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 05:44:37,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:44:37,127 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:44:37,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-09 05:44:37,127 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:44:37,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:44:37,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1650844274, now seen corresponding path program 1 times [2024-11-09 05:44:37,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:44:37,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980654687] [2024-11-09 05:44:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:37,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:44:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:44:37,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:37,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980654687] [2024-11-09 05:44:37,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980654687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:44:37,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:44:37,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:44:37,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5301908] [2024-11-09 05:44:37,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:44:37,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:44:37,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:44:37,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:44:37,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:37,229 INFO L87 Difference]: Start difference. First operand 14879 states and 21533 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:37,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:44:37,357 INFO L93 Difference]: Finished difference Result 29013 states and 42259 transitions. [2024-11-09 05:44:37,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:44:37,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-09 05:44:37,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:44:37,379 INFO L225 Difference]: With dead ends: 29013 [2024-11-09 05:44:37,379 INFO L226 Difference]: Without dead ends: 20115 [2024-11-09 05:44:37,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:37,388 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 80 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:44:37,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 353 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:44:37,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20115 states. [2024-11-09 05:44:37,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20115 to 18717. [2024-11-09 05:44:37,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18717 states, 18716 states have (on average 1.4430968155588801) internal successors, (27009), 18716 states have internal predecessors, (27009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 27009 transitions. [2024-11-09 05:44:37,580 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 27009 transitions. Word has length 84 [2024-11-09 05:44:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:44:37,580 INFO L471 AbstractCegarLoop]: Abstraction has 18717 states and 27009 transitions. [2024-11-09 05:44:37,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:37,580 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 27009 transitions. [2024-11-09 05:44:37,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 05:44:37,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:44:37,582 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:44:37,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-09 05:44:37,582 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:44:37,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:44:37,583 INFO L85 PathProgramCache]: Analyzing trace with hash 115195268, now seen corresponding path program 1 times [2024-11-09 05:44:37,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:44:37,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341252805] [2024-11-09 05:44:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:37,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:44:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:44:37,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:37,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341252805] [2024-11-09 05:44:37,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341252805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:44:37,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:44:37,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:44:37,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785262913] [2024-11-09 05:44:37,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:44:37,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:44:37,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:44:37,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:44:37,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:37,683 INFO L87 Difference]: Start difference. First operand 18717 states and 27009 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:44:37,807 INFO L93 Difference]: Finished difference Result 35074 states and 50462 transitions. [2024-11-09 05:44:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:44:37,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-09 05:44:37,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:44:37,833 INFO L225 Difference]: With dead ends: 35074 [2024-11-09 05:44:37,833 INFO L226 Difference]: Without dead ends: 26064 [2024-11-09 05:44:37,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:37,843 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 80 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:44:37,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 359 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:44:37,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26064 states. [2024-11-09 05:44:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26064 to 26062. [2024-11-09 05:44:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26062 states, 26061 states have (on average 1.4317178926365066) internal successors, (37312), 26061 states have internal predecessors, (37312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26062 states to 26062 states and 37312 transitions. [2024-11-09 05:44:38,122 INFO L78 Accepts]: Start accepts. Automaton has 26062 states and 37312 transitions. Word has length 87 [2024-11-09 05:44:38,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:44:38,122 INFO L471 AbstractCegarLoop]: Abstraction has 26062 states and 37312 transitions. [2024-11-09 05:44:38,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:38,122 INFO L276 IsEmpty]: Start isEmpty. Operand 26062 states and 37312 transitions. [2024-11-09 05:44:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 05:44:38,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:44:38,124 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:44:38,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-09 05:44:38,124 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:44:38,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:44:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2035104316, now seen corresponding path program 1 times [2024-11-09 05:44:38,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:44:38,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920229412] [2024-11-09 05:44:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:38,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:44:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:44:38,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:38,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920229412] [2024-11-09 05:44:38,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920229412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:44:38,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:44:38,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:44:38,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761335671] [2024-11-09 05:44:38,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:44:38,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:44:38,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:44:38,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:44:38,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:38,227 INFO L87 Difference]: Start difference. First operand 26062 states and 37312 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:38,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:44:38,401 INFO L93 Difference]: Finished difference Result 55190 states and 79396 transitions. [2024-11-09 05:44:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:44:38,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-09 05:44:38,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:44:38,440 INFO L225 Difference]: With dead ends: 55190 [2024-11-09 05:44:38,441 INFO L226 Difference]: Without dead ends: 36768 [2024-11-09 05:44:38,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:38,454 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 75 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:44:38,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 334 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:44:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36768 states. [2024-11-09 05:44:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36768 to 34008. [2024-11-09 05:44:38,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34008 states, 34007 states have (on average 1.423883318140383) internal successors, (48422), 34007 states have internal predecessors, (48422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:38,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34008 states to 34008 states and 48422 transitions. [2024-11-09 05:44:38,954 INFO L78 Accepts]: Start accepts. Automaton has 34008 states and 48422 transitions. Word has length 87 [2024-11-09 05:44:38,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:44:38,954 INFO L471 AbstractCegarLoop]: Abstraction has 34008 states and 48422 transitions. [2024-11-09 05:44:38,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:38,954 INFO L276 IsEmpty]: Start isEmpty. Operand 34008 states and 48422 transitions. [2024-11-09 05:44:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-09 05:44:38,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:44:38,956 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:44:38,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-09 05:44:38,957 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:44:38,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:44:38,957 INFO L85 PathProgramCache]: Analyzing trace with hash 994732954, now seen corresponding path program 1 times [2024-11-09 05:44:38,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:44:38,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553508930] [2024-11-09 05:44:38,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:38,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:44:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:44:39,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553508930] [2024-11-09 05:44:39,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553508930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:44:39,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:44:39,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:44:39,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440430568] [2024-11-09 05:44:39,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:44:39,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:44:39,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:44:39,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:44:39,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:39,066 INFO L87 Difference]: Start difference. First operand 34008 states and 48422 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:39,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:44:39,307 INFO L93 Difference]: Finished difference Result 80628 states and 115180 transitions. [2024-11-09 05:44:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:44:39,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-11-09 05:44:39,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:44:39,362 INFO L225 Difference]: With dead ends: 80628 [2024-11-09 05:44:39,363 INFO L226 Difference]: Without dead ends: 50426 [2024-11-09 05:44:39,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:39,388 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 72 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:44:39,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 335 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:44:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50426 states. [2024-11-09 05:44:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50426 to 46964. [2024-11-09 05:44:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46964 states, 46963 states have (on average 1.4164342141686008) internal successors, (66520), 46963 states have internal predecessors, (66520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46964 states to 46964 states and 66520 transitions. [2024-11-09 05:44:39,953 INFO L78 Accepts]: Start accepts. Automaton has 46964 states and 66520 transitions. Word has length 90 [2024-11-09 05:44:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:44:39,953 INFO L471 AbstractCegarLoop]: Abstraction has 46964 states and 66520 transitions. [2024-11-09 05:44:39,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 46964 states and 66520 transitions. [2024-11-09 05:44:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 05:44:39,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:44:39,956 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:39,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-09 05:44:39,956 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:44:39,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:44:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1702941598, now seen corresponding path program 1 times [2024-11-09 05:44:39,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:44:39,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978824612] [2024-11-09 05:44:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:39,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:44:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:44:40,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:40,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978824612] [2024-11-09 05:44:40,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978824612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:44:40,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:44:40,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:44:40,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751540838] [2024-11-09 05:44:40,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:44:40,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:44:40,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:44:40,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:44:40,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:40,150 INFO L87 Difference]: Start difference. First operand 46964 states and 66520 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:44:40,393 INFO L93 Difference]: Finished difference Result 86460 states and 122742 transitions. [2024-11-09 05:44:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:44:40,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-09 05:44:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:44:40,435 INFO L225 Difference]: With dead ends: 86460 [2024-11-09 05:44:40,435 INFO L226 Difference]: Without dead ends: 40140 [2024-11-09 05:44:40,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:44:40,463 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 75 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:44:40,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 391 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:44:40,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40140 states. [2024-11-09 05:44:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40140 to 29130. [2024-11-09 05:44:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29130 states, 29129 states have (on average 1.404476638401593) internal successors, (40911), 29129 states have internal predecessors, (40911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29130 states to 29130 states and 40911 transitions. [2024-11-09 05:44:40,840 INFO L78 Accepts]: Start accepts. Automaton has 29130 states and 40911 transitions. Word has length 95 [2024-11-09 05:44:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:44:40,840 INFO L471 AbstractCegarLoop]: Abstraction has 29130 states and 40911 transitions. [2024-11-09 05:44:40,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 29130 states and 40911 transitions. [2024-11-09 05:44:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 05:44:40,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:44:40,846 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:40,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-09 05:44:40,846 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:44:40,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:44:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash -265043403, now seen corresponding path program 1 times [2024-11-09 05:44:40,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:44:40,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848861174] [2024-11-09 05:44:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:40,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:44:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:44:41,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:41,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848861174] [2024-11-09 05:44:41,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848861174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:44:41,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:44:41,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:44:41,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066048151] [2024-11-09 05:44:41,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:44:41,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:44:41,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:44:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:44:41,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:44:41,062 INFO L87 Difference]: Start difference. First operand 29130 states and 40911 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:44:41,702 INFO L93 Difference]: Finished difference Result 102051 states and 142716 transitions. [2024-11-09 05:44:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:44:41,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-09 05:44:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:44:41,779 INFO L225 Difference]: With dead ends: 102051 [2024-11-09 05:44:41,779 INFO L226 Difference]: Without dead ends: 73682 [2024-11-09 05:44:41,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:44:41,803 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 1215 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:44:41,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 352 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:44:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73682 states. [2024-11-09 05:44:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73682 to 50751. [2024-11-09 05:44:42,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50751 states, 50750 states have (on average 1.3822068965517242) internal successors, (70147), 50750 states have internal predecessors, (70147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50751 states to 50751 states and 70147 transitions. [2024-11-09 05:44:42,707 INFO L78 Accepts]: Start accepts. Automaton has 50751 states and 70147 transitions. Word has length 106 [2024-11-09 05:44:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:44:42,707 INFO L471 AbstractCegarLoop]: Abstraction has 50751 states and 70147 transitions. [2024-11-09 05:44:42,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:44:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 50751 states and 70147 transitions. [2024-11-09 05:44:42,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 05:44:42,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:44:42,713 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:42,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-09 05:44:42,713 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:44:42,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:44:42,714 INFO L85 PathProgramCache]: Analyzing trace with hash -351413158, now seen corresponding path program 1 times [2024-11-09 05:44:42,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:44:42,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427184059] [2024-11-09 05:44:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:42,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:44:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:44:45,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:45,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427184059] [2024-11-09 05:44:45,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427184059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:44:45,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247816782] [2024-11-09 05:44:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:45,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:44:45,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:44:45,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:44:45,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:44:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:45,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-09 05:44:45,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:44:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:44:48,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:46:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:46:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247816782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:46:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1762558808] [2024-11-09 05:46:20,900 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2024-11-09 05:46:20,900 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:46:20,905 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:46:20,912 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:46:20,912 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:46:30,750 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:47:20,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1762558808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:47:20,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:47:20,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [24, 21, 17] total 117 [2024-11-09 05:47:20,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049314980] [2024-11-09 05:47:20,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:47:20,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-09 05:47:20,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:47:20,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-09 05:47:20,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2140, Invalid=11432, Unknown=0, NotChecked=0, Total=13572 [2024-11-09 05:47:20,020 INFO L87 Difference]: Start difference. First operand 50751 states and 70147 transitions. Second operand has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 61 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:47:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:47:31,080 INFO L93 Difference]: Finished difference Result 66268 states and 91353 transitions. [2024-11-09 05:47:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-09 05:47:31,081 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 61 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-09 05:47:31,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:47:31,123 INFO L225 Difference]: With dead ends: 66268 [2024-11-09 05:47:31,123 INFO L226 Difference]: Without dead ends: 50803 [2024-11-09 05:47:31,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 223 SyntacticMatches, 3 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5777 ImplicationChecksByTransitivity, 56.3s TimeCoverageRelationStatistics Valid=2140, Invalid=11432, Unknown=0, NotChecked=0, Total=13572 [2024-11-09 05:47:31,138 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 17 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 5779 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 5786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:47:31,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 264 Invalid, 5786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 5779 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2024-11-09 05:47:31,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50803 states. [2024-11-09 05:47:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50803 to 50796. [2024-11-09 05:47:31,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50796 states, 50795 states have (on average 1.3819076680775666) internal successors, (70194), 50795 states have internal predecessors, (70194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:47:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50796 states to 50796 states and 70194 transitions. [2024-11-09 05:47:31,743 INFO L78 Accepts]: Start accepts. Automaton has 50796 states and 70194 transitions. Word has length 106 [2024-11-09 05:47:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:47:31,743 INFO L471 AbstractCegarLoop]: Abstraction has 50796 states and 70194 transitions. [2024-11-09 05:47:31,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 61 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:47:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 50796 states and 70194 transitions. [2024-11-09 05:47:31,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 05:47:31,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:47:31,750 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:31,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:47:31,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:47:31,951 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:47:31,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:47:31,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1864016149, now seen corresponding path program 1 times [2024-11-09 05:47:31,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:47:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906114565] [2024-11-09 05:47:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:47:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:47:32,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:47:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906114565] [2024-11-09 05:47:32,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906114565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:47:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166849185] [2024-11-09 05:47:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:32,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:47:32,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:47:32,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:47:32,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:47:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:32,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:47:32,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:47:32,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:47:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:47:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166849185] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:47:33,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:47:33,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 13 [2024-11-09 05:47:33,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732776868] [2024-11-09 05:47:33,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:47:33,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:47:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:47:33,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:47:33,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:47:33,065 INFO L87 Difference]: Start difference. First operand 50796 states and 70194 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:47:33,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:47:33,477 INFO L93 Difference]: Finished difference Result 148829 states and 205538 transitions. [2024-11-09 05:47:33,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:47:33,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-09 05:47:33,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:47:33,597 INFO L225 Difference]: With dead ends: 148829 [2024-11-09 05:47:33,597 INFO L226 Difference]: Without dead ends: 99448 [2024-11-09 05:47:33,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:47:33,631 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 68 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:47:33,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 255 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:47:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99448 states. [2024-11-09 05:47:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99448 to 99446. [2024-11-09 05:47:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99446 states, 99445 states have (on average 1.3715320026145106) internal successors, (136392), 99445 states have internal predecessors, (136392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:47:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99446 states to 99446 states and 136392 transitions. [2024-11-09 05:47:35,570 INFO L78 Accepts]: Start accepts. Automaton has 99446 states and 136392 transitions. Word has length 106 [2024-11-09 05:47:35,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:47:35,571 INFO L471 AbstractCegarLoop]: Abstraction has 99446 states and 136392 transitions. [2024-11-09 05:47:35,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:47:35,572 INFO L276 IsEmpty]: Start isEmpty. Operand 99446 states and 136392 transitions. [2024-11-09 05:47:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 05:47:35,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:47:35,581 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:35,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:47:35,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:47:35,786 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:47:35,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:47:35,787 INFO L85 PathProgramCache]: Analyzing trace with hash -295488134, now seen corresponding path program 1 times [2024-11-09 05:47:35,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:47:35,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540609122] [2024-11-09 05:47:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:35,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:47:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:38,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:47:38,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540609122] [2024-11-09 05:47:38,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540609122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:47:38,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994862902] [2024-11-09 05:47:38,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:38,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:47:38,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:47:38,756 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:47:38,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d645d1-8d4a-47e3-827e-d272426f5498/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:47:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:39,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-09 05:47:39,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:46,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:23,343 WARN L286 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 273 DAG size of output: 270 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:52:53,981 WARN L286 SmtUtils]: Spent 59.57s on a formula simplification. DAG size of input: 752 DAG size of output: 746 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)