./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/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_99337190-1823-46ed-972c-4155540bd573/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/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_99337190-1823-46ed-972c-4155540bd573/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 bbcb02f84aadc49a5c6c6cd26449c15fd97ea67d08608a672ddfc36ff8b8eddf --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:04:30,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:04:30,411 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:04:30,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:04:30,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:04:30,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:04:30,476 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:04:30,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:04:30,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:04:30,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:04:30,479 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:04:30,479 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:04:30,480 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:04:30,480 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:04:30,481 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:04:30,481 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:04:30,482 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:04:30,482 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:04:30,483 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:04:30,483 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:04:30,484 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:04:30,485 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:04:30,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:04:30,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:04:30,486 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:04:30,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:04:30,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:04:30,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:04:30,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:04:30,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:04:30,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:04:30,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:04:30,490 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:04:30,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:04:30,491 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:04:30,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:04:30,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:04:30,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:04:30,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:04:30,493 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:04:30,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:04:30,494 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:04:30,494 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:04:30,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:04:30,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:04:30,495 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:04:30,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:04:30,496 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_99337190-1823-46ed-972c-4155540bd573/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbcb02f84aadc49a5c6c6cd26449c15fd97ea67d08608a672ddfc36ff8b8eddf [2024-11-09 07:04:30,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:04:30,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:04:30,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:04:30,867 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:04:30,867 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:04:30,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c Unable to find full path for "g++" [2024-11-09 07:04:33,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:04:33,730 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:04:33,731 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-11-09 07:04:33,766 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/bin/utaipan-verify-YMUCfTKeje/data/d1dba3b71/b8abd0d1c4d64ed8addaad875b9ef036/FLAG5b36f818d [2024-11-09 07:04:33,788 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/bin/utaipan-verify-YMUCfTKeje/data/d1dba3b71/b8abd0d1c4d64ed8addaad875b9ef036 [2024-11-09 07:04:33,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:04:33,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:04:33,796 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:04:33,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:04:33,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:04:33,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:04:33" (1/1) ... [2024-11-09 07:04:33,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c19f764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:33, skipping insertion in model container [2024-11-09 07:04:33,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:04:33" (1/1) ... [2024-11-09 07:04:33,938 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:04:34,832 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_99337190-1823-46ed-972c-4155540bd573/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[34857,34870] [2024-11-09 07:04:35,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:04:35,138 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:04:35,514 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_99337190-1823-46ed-972c-4155540bd573/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[34857,34870] [2024-11-09 07:04:35,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:04:35,854 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:04:35,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35 WrapperNode [2024-11-09 07:04:35,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:04:35,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:04:35,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:04:35,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:04:35,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (1/1) ... [2024-11-09 07:04:35,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (1/1) ... [2024-11-09 07:04:36,037 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3060 [2024-11-09 07:04:36,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:04:36,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:04:36,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:04:36,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:04:36,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (1/1) ... [2024-11-09 07:04:36,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (1/1) ... [2024-11-09 07:04:36,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (1/1) ... [2024-11-09 07:04:36,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (1/1) ... [2024-11-09 07:04:36,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (1/1) ... [2024-11-09 07:04:36,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (1/1) ... [2024-11-09 07:04:36,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (1/1) ... [2024-11-09 07:04:36,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (1/1) ... [2024-11-09 07:04:36,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:04:36,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:04:36,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:04:36,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:04:36,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (1/1) ... [2024-11-09 07:04:36,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:04:36,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:04:36,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:04:36,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99337190-1823-46ed-972c-4155540bd573/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:04:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:04:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:04:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:04:36,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:04:36,525 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:04:36,527 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:04:39,782 INFO L? ?]: Removed 197 outVars from TransFormulas that were not future-live. [2024-11-09 07:04:39,782 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:04:40,901 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:04:40,901 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:04:40,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:04:40 BoogieIcfgContainer [2024-11-09 07:04:40,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:04:40,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:04:40,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:04:40,910 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:04:40,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:04:33" (1/3) ... [2024-11-09 07:04:40,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4820dffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:04:40, skipping insertion in model container [2024-11-09 07:04:40,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:04:35" (2/3) ... [2024-11-09 07:04:40,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4820dffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:04:40, skipping insertion in model container [2024-11-09 07:04:40,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:04:40" (3/3) ... [2024-11-09 07:04:40,914 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-11-09 07:04:40,937 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:04:40,938 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:04:41,035 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:04:41,042 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;@4b7ebea0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:04:41,043 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:04:41,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 623 states, 621 states have (on average 1.7246376811594204) internal successors, (1071), 622 states have internal predecessors, (1071), 0 states have call successors, (0), 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 07:04:41,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-09 07:04:41,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:41,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:41,085 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:41,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:41,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2065344627, now seen corresponding path program 1 times [2024-11-09 07:04:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:41,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933342414] [2024-11-09 07:04:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:41,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:44,422 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 07:04:44,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:44,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933342414] [2024-11-09 07:04:44,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933342414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:44,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:44,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:04:44,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800335304] [2024-11-09 07:04:44,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:44,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:04:44,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:04:44,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:04:44,471 INFO L87 Difference]: Start difference. First operand has 623 states, 621 states have (on average 1.7246376811594204) internal successors, (1071), 622 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:04:45,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:45,306 INFO L93 Difference]: Finished difference Result 3027 states and 5216 transitions. [2024-11-09 07:04:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:04:45,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2024-11-09 07:04:45,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:45,342 INFO L225 Difference]: With dead ends: 3027 [2024-11-09 07:04:45,342 INFO L226 Difference]: Without dead ends: 2407 [2024-11-09 07:04:45,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:04:45,355 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 3436 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3436 SdHoareTripleChecker+Valid, 4036 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:45,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3436 Valid, 4036 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:04:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2024-11-09 07:04:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1213. [2024-11-09 07:04:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1212 states have (on average 1.452970297029703) internal successors, (1761), 1212 states have internal predecessors, (1761), 0 states have call successors, (0), 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 07:04:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1761 transitions. [2024-11-09 07:04:45,524 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1761 transitions. Word has length 257 [2024-11-09 07:04:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:45,525 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1761 transitions. [2024-11-09 07:04:45,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:04:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1761 transitions. [2024-11-09 07:04:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-09 07:04:45,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:45,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:45,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:04:45,535 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:45,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:45,536 INFO L85 PathProgramCache]: Analyzing trace with hash -988704962, now seen corresponding path program 1 times [2024-11-09 07:04:45,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:45,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803362378] [2024-11-09 07:04:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:45,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:45,992 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 07:04:45,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803362378] [2024-11-09 07:04:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803362378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:45,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:45,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:04:45,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002816613] [2024-11-09 07:04:45,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:45,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:04:46,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:46,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:04:46,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:04:46,003 INFO L87 Difference]: Start difference. First operand 1213 states and 1761 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 07:04:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:46,336 INFO L93 Difference]: Finished difference Result 3470 states and 5017 transitions. [2024-11-09 07:04:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:04:46,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2024-11-09 07:04:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:46,348 INFO L225 Difference]: With dead ends: 3470 [2024-11-09 07:04:46,349 INFO L226 Difference]: Without dead ends: 2378 [2024-11-09 07:04:46,355 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 07:04:46,357 INFO L432 NwaCegarLoop]: 1667 mSDtfsCounter, 793 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:46,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 2484 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:04:46,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2024-11-09 07:04:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2376. [2024-11-09 07:04:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2375 states have (on average 1.4463157894736842) internal successors, (3435), 2375 states have internal predecessors, (3435), 0 states have call successors, (0), 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 07:04:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 3435 transitions. [2024-11-09 07:04:46,448 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 3435 transitions. Word has length 259 [2024-11-09 07:04:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:46,449 INFO L471 AbstractCegarLoop]: Abstraction has 2376 states and 3435 transitions. [2024-11-09 07:04:46,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 07:04:46,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 3435 transitions. [2024-11-09 07:04:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-09 07:04:46,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:46,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:46,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:04:46,471 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:46,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash 797589465, now seen corresponding path program 1 times [2024-11-09 07:04:46,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:46,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913782930] [2024-11-09 07:04:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:46,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:46,942 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 07:04:46,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:46,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913782930] [2024-11-09 07:04:46,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913782930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:46,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:46,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:04:46,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079241482] [2024-11-09 07:04:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:46,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:04:46,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:46,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:04:46,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:04:46,949 INFO L87 Difference]: Start difference. First operand 2376 states and 3435 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 07:04:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:47,352 INFO L93 Difference]: Finished difference Result 6976 states and 10072 transitions. [2024-11-09 07:04:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:04:47,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2024-11-09 07:04:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:47,372 INFO L225 Difference]: With dead ends: 6976 [2024-11-09 07:04:47,375 INFO L226 Difference]: Without dead ends: 4732 [2024-11-09 07:04:47,381 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 07:04:47,384 INFO L432 NwaCegarLoop]: 1710 mSDtfsCounter, 896 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:47,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 2563 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:04:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2024-11-09 07:04:47,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 2379. [2024-11-09 07:04:47,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2378 states have (on average 1.445752733389403) internal successors, (3438), 2378 states have internal predecessors, (3438), 0 states have call successors, (0), 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 07:04:47,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 3438 transitions. [2024-11-09 07:04:47,489 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 3438 transitions. Word has length 259 [2024-11-09 07:04:47,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:47,489 INFO L471 AbstractCegarLoop]: Abstraction has 2379 states and 3438 transitions. [2024-11-09 07:04:47,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 07:04:47,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 3438 transitions. [2024-11-09 07:04:47,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-09 07:04:47,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:47,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:47,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:04:47,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:47,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash 671030277, now seen corresponding path program 1 times [2024-11-09 07:04:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:47,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696315753] [2024-11-09 07:04:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:47,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:50,118 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 07:04:50,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:50,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696315753] [2024-11-09 07:04:50,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696315753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:50,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:50,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:04:50,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485338779] [2024-11-09 07:04:50,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:50,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:04:50,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:04:50,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:04:50,123 INFO L87 Difference]: Start difference. First operand 2379 states and 3438 transitions. Second operand has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 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 07:04:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:51,106 INFO L93 Difference]: Finished difference Result 10165 states and 14572 transitions. [2024-11-09 07:04:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:04:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2024-11-09 07:04:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:51,136 INFO L225 Difference]: With dead ends: 10165 [2024-11-09 07:04:51,136 INFO L226 Difference]: Without dead ends: 8679 [2024-11-09 07:04:51,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:04:51,142 INFO L432 NwaCegarLoop]: 2401 mSDtfsCounter, 3135 mSDsluCounter, 4749 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3135 SdHoareTripleChecker+Valid, 7150 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:51,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3135 Valid, 7150 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 07:04:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8679 states. [2024-11-09 07:04:51,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8679 to 4561. [2024-11-09 07:04:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4561 states, 4560 states have (on average 1.437719298245614) internal successors, (6556), 4560 states have internal predecessors, (6556), 0 states have call successors, (0), 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 07:04:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4561 states to 4561 states and 6556 transitions. [2024-11-09 07:04:51,342 INFO L78 Accepts]: Start accepts. Automaton has 4561 states and 6556 transitions. Word has length 260 [2024-11-09 07:04:51,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:51,344 INFO L471 AbstractCegarLoop]: Abstraction has 4561 states and 6556 transitions. [2024-11-09 07:04:51,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 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 07:04:51,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4561 states and 6556 transitions. [2024-11-09 07:04:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-09 07:04:51,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:51,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:51,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:04:51,358 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:51,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash -142152735, now seen corresponding path program 1 times [2024-11-09 07:04:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:51,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845024202] [2024-11-09 07:04:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:51,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:51,762 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 07:04:51,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:51,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845024202] [2024-11-09 07:04:51,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845024202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:51,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:51,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:04:51,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129449799] [2024-11-09 07:04:51,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:51,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:04:51,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:51,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:04:51,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:04:51,768 INFO L87 Difference]: Start difference. First operand 4561 states and 6556 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 07:04:52,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:52,093 INFO L93 Difference]: Finished difference Result 9861 states and 14374 transitions. [2024-11-09 07:04:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:04:52,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2024-11-09 07:04:52,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:52,114 INFO L225 Difference]: With dead ends: 9861 [2024-11-09 07:04:52,115 INFO L226 Difference]: Without dead ends: 6463 [2024-11-09 07:04:52,119 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 07:04:52,120 INFO L432 NwaCegarLoop]: 1232 mSDtfsCounter, 574 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:52,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1871 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:04:52,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6463 states. [2024-11-09 07:04:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6463 to 5293. [2024-11-09 07:04:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 1.4603174603174602) internal successors, (7728), 5292 states have internal predecessors, (7728), 0 states have call successors, (0), 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 07:04:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 7728 transitions. [2024-11-09 07:04:52,278 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 7728 transitions. Word has length 260 [2024-11-09 07:04:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:52,278 INFO L471 AbstractCegarLoop]: Abstraction has 5293 states and 7728 transitions. [2024-11-09 07:04:52,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 07:04:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 7728 transitions. [2024-11-09 07:04:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-09 07:04:52,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:52,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:52,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:04:52,289 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:52,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:52,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1990355, now seen corresponding path program 1 times [2024-11-09 07:04:52,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:52,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395945353] [2024-11-09 07:04:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:52,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:52,581 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 07:04:52,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395945353] [2024-11-09 07:04:52,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395945353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:52,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:52,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:04:52,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872041398] [2024-11-09 07:04:52,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:52,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:04:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:52,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:04:52,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:04:52,584 INFO L87 Difference]: Start difference. First operand 5293 states and 7728 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 07:04:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:52,917 INFO L93 Difference]: Finished difference Result 11089 states and 16370 transitions. [2024-11-09 07:04:52,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:04:52,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2024-11-09 07:04:52,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:52,936 INFO L225 Difference]: With dead ends: 11089 [2024-11-09 07:04:52,936 INFO L226 Difference]: Without dead ends: 7271 [2024-11-09 07:04:52,941 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 07:04:52,942 INFO L432 NwaCegarLoop]: 1103 mSDtfsCounter, 444 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:52,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1740 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:04:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7271 states. [2024-11-09 07:04:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7271 to 6637. [2024-11-09 07:04:53,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6637 states, 6636 states have (on average 1.4900542495479205) internal successors, (9888), 6636 states have internal predecessors, (9888), 0 states have call successors, (0), 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 07:04:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6637 states to 6637 states and 9888 transitions. [2024-11-09 07:04:53,115 INFO L78 Accepts]: Start accepts. Automaton has 6637 states and 9888 transitions. Word has length 262 [2024-11-09 07:04:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:53,115 INFO L471 AbstractCegarLoop]: Abstraction has 6637 states and 9888 transitions. [2024-11-09 07:04:53,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 07:04:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 6637 states and 9888 transitions. [2024-11-09 07:04:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-09 07:04:53,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:53,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:53,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:04:53,125 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:53,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:53,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1177407536, now seen corresponding path program 1 times [2024-11-09 07:04:53,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:53,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403395860] [2024-11-09 07:04:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:53,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:54,963 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 07:04:54,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:54,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403395860] [2024-11-09 07:04:54,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403395860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:54,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:54,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:04:54,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913499754] [2024-11-09 07:04:54,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:54,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:04:54,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:54,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:04:54,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:04:54,971 INFO L87 Difference]: Start difference. First operand 6637 states and 9888 transitions. Second operand has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 6 states have internal predecessors, (262), 0 states have call successors, (0), 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 07:04:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:55,809 INFO L93 Difference]: Finished difference Result 30149 states and 45023 transitions. [2024-11-09 07:04:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:04:55,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 6 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2024-11-09 07:04:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:55,868 INFO L225 Difference]: With dead ends: 30149 [2024-11-09 07:04:55,868 INFO L226 Difference]: Without dead ends: 23531 [2024-11-09 07:04:55,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:04:55,882 INFO L432 NwaCegarLoop]: 1645 mSDtfsCounter, 3523 mSDsluCounter, 4010 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3523 SdHoareTripleChecker+Valid, 5655 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:55,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3523 Valid, 5655 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:04:55,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23531 states. [2024-11-09 07:04:56,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23531 to 12225. [2024-11-09 07:04:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12225 states, 12224 states have (on average 1.4874836387434556) internal successors, (18183), 12224 states have internal predecessors, (18183), 0 states have call successors, (0), 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 07:04:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12225 states to 12225 states and 18183 transitions. [2024-11-09 07:04:56,454 INFO L78 Accepts]: Start accepts. Automaton has 12225 states and 18183 transitions. Word has length 262 [2024-11-09 07:04:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:56,454 INFO L471 AbstractCegarLoop]: Abstraction has 12225 states and 18183 transitions. [2024-11-09 07:04:56,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 6 states have internal predecessors, (262), 0 states have call successors, (0), 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 07:04:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 12225 states and 18183 transitions. [2024-11-09 07:04:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-09 07:04:56,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:56,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:56,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 07:04:56,471 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:56,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:56,472 INFO L85 PathProgramCache]: Analyzing trace with hash 373388801, now seen corresponding path program 1 times [2024-11-09 07:04:56,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:56,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584928290] [2024-11-09 07:04:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:56,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:56,711 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 07:04:56,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:56,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584928290] [2024-11-09 07:04:56,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584928290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:56,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:56,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:04:56,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053161971] [2024-11-09 07:04:56,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:56,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:04:56,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:56,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:04:56,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:04:56,714 INFO L87 Difference]: Start difference. First operand 12225 states and 18183 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 07:04:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:57,066 INFO L93 Difference]: Finished difference Result 35305 states and 52457 transitions. [2024-11-09 07:04:57,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:04:57,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2024-11-09 07:04:57,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:57,170 INFO L225 Difference]: With dead ends: 35305 [2024-11-09 07:04:57,171 INFO L226 Difference]: Without dead ends: 23914 [2024-11-09 07:04:57,199 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 07:04:57,204 INFO L432 NwaCegarLoop]: 1614 mSDtfsCounter, 794 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:57,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 2460 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:04:57,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23914 states. [2024-11-09 07:04:57,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23914 to 12248. [2024-11-09 07:04:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12248 states, 12247 states have (on average 1.486568139136115) internal successors, (18206), 12247 states have internal predecessors, (18206), 0 states have call successors, (0), 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 07:04:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12248 states to 12248 states and 18206 transitions. [2024-11-09 07:04:57,639 INFO L78 Accepts]: Start accepts. Automaton has 12248 states and 18206 transitions. Word has length 262 [2024-11-09 07:04:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:57,640 INFO L471 AbstractCegarLoop]: Abstraction has 12248 states and 18206 transitions. [2024-11-09 07:04:57,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 07:04:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 12248 states and 18206 transitions. [2024-11-09 07:04:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-09 07:04:57,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:57,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:57,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 07:04:57,654 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:57,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:57,654 INFO L85 PathProgramCache]: Analyzing trace with hash 207855722, now seen corresponding path program 1 times [2024-11-09 07:04:57,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:57,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015593073] [2024-11-09 07:04:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:57,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:57,895 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 07:04:57,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:57,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015593073] [2024-11-09 07:04:57,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015593073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:57,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:57,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:04:57,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682964403] [2024-11-09 07:04:57,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:57,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:04:57,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:57,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:04:57,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:04:57,900 INFO L87 Difference]: Start difference. First operand 12248 states and 18206 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 07:04:58,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:04:58,267 INFO L93 Difference]: Finished difference Result 27700 states and 41768 transitions. [2024-11-09 07:04:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:04:58,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2024-11-09 07:04:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:04:58,303 INFO L225 Difference]: With dead ends: 27700 [2024-11-09 07:04:58,304 INFO L226 Difference]: Without dead ends: 17866 [2024-11-09 07:04:58,317 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 07:04:58,319 INFO L432 NwaCegarLoop]: 1037 mSDtfsCounter, 378 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:04:58,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1673 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:04:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17866 states. [2024-11-09 07:04:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17866 to 17096. [2024-11-09 07:04:58,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17096 states, 17095 states have (on average 1.520327581164083) internal successors, (25990), 17095 states have internal predecessors, (25990), 0 states have call successors, (0), 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 07:04:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17096 states to 17096 states and 25990 transitions. [2024-11-09 07:04:58,669 INFO L78 Accepts]: Start accepts. Automaton has 17096 states and 25990 transitions. Word has length 263 [2024-11-09 07:04:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:04:58,670 INFO L471 AbstractCegarLoop]: Abstraction has 17096 states and 25990 transitions. [2024-11-09 07:04:58,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 07:04:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 17096 states and 25990 transitions. [2024-11-09 07:04:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-09 07:04:58,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:58,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:58,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 07:04:58,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:58,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:58,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1562824083, now seen corresponding path program 1 times [2024-11-09 07:04:58,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:58,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317742320] [2024-11-09 07:04:58,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:58,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:04:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:04:59,973 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 07:04:59,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:04:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317742320] [2024-11-09 07:04:59,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317742320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:04:59,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:04:59,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:04:59,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085344930] [2024-11-09 07:04:59,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:04:59,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:04:59,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:04:59,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:04:59,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:04:59,977 INFO L87 Difference]: Start difference. First operand 17096 states and 25990 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 07:05:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:00,650 INFO L93 Difference]: Finished difference Result 64941 states and 98892 transitions. [2024-11-09 07:05:00,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:05:00,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2024-11-09 07:05:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:00,750 INFO L225 Difference]: With dead ends: 64941 [2024-11-09 07:05:00,751 INFO L226 Difference]: Without dead ends: 47980 [2024-11-09 07:05:00,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:05:00,776 INFO L432 NwaCegarLoop]: 1433 mSDtfsCounter, 1815 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:00,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1815 Valid, 3017 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:05:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47980 states. [2024-11-09 07:05:01,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47980 to 33284. [2024-11-09 07:05:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33284 states, 33283 states have (on average 1.513775801460205) internal successors, (50383), 33283 states have internal predecessors, (50383), 0 states have call successors, (0), 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 07:05:01,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33284 states to 33284 states and 50383 transitions. [2024-11-09 07:05:01,780 INFO L78 Accepts]: Start accepts. Automaton has 33284 states and 50383 transitions. Word has length 263 [2024-11-09 07:05:01,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:05:01,780 INFO L471 AbstractCegarLoop]: Abstraction has 33284 states and 50383 transitions. [2024-11-09 07:05:01,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 07:05:01,781 INFO L276 IsEmpty]: Start isEmpty. Operand 33284 states and 50383 transitions. [2024-11-09 07:05:01,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-09 07:05:01,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:01,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:01,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 07:05:01,814 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:01,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:01,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1665017276, now seen corresponding path program 1 times [2024-11-09 07:05:01,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:05:01,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910896892] [2024-11-09 07:05:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:01,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:05:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:03,360 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 07:05:03,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:05:03,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910896892] [2024-11-09 07:05:03,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910896892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:03,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:05:03,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:05:03,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218895484] [2024-11-09 07:05:03,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:03,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:05:03,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:05:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:05:03,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:05:03,363 INFO L87 Difference]: Start difference. First operand 33284 states and 50383 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 07:05:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:04,039 INFO L93 Difference]: Finished difference Result 94233 states and 142516 transitions. [2024-11-09 07:05:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:05:04,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2024-11-09 07:05:04,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:04,153 INFO L225 Difference]: With dead ends: 94233 [2024-11-09 07:05:04,153 INFO L226 Difference]: Without dead ends: 61283 [2024-11-09 07:05:04,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:05:04,190 INFO L432 NwaCegarLoop]: 1435 mSDtfsCounter, 787 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:04,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 3648 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:05:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61283 states. [2024-11-09 07:05:05,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61283 to 61281. [2024-11-09 07:05:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61281 states, 61280 states have (on average 1.5044386422976501) internal successors, (92192), 61280 states have internal predecessors, (92192), 0 states have call successors, (0), 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 07:05:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61281 states to 61281 states and 92192 transitions. [2024-11-09 07:05:05,403 INFO L78 Accepts]: Start accepts. Automaton has 61281 states and 92192 transitions. Word has length 264 [2024-11-09 07:05:05,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:05:05,403 INFO L471 AbstractCegarLoop]: Abstraction has 61281 states and 92192 transitions. [2024-11-09 07:05:05,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 07:05:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 61281 states and 92192 transitions. [2024-11-09 07:05:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-09 07:05:05,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:05,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:05,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 07:05:05,442 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:05,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:05,443 INFO L85 PathProgramCache]: Analyzing trace with hash -373283448, now seen corresponding path program 1 times [2024-11-09 07:05:05,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:05:05,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422307358] [2024-11-09 07:05:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:05,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:05:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:05,705 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 07:05:05,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:05:05,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422307358] [2024-11-09 07:05:05,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422307358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:05,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:05:05,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:05:05,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351391610] [2024-11-09 07:05:05,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:05,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:05:05,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:05:05,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:05:05,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:05:05,708 INFO L87 Difference]: Start difference. First operand 61281 states and 92192 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 07:05:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:07,078 INFO L93 Difference]: Finished difference Result 172152 states and 259523 transitions. [2024-11-09 07:05:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:05:07,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 265 [2024-11-09 07:05:07,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:07,443 INFO L225 Difference]: With dead ends: 172152 [2024-11-09 07:05:07,444 INFO L226 Difference]: Without dead ends: 116234 [2024-11-09 07:05:07,483 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 07:05:07,487 INFO L432 NwaCegarLoop]: 1636 mSDtfsCounter, 799 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:07,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 2444 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 07:05:07,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116234 states. [2024-11-09 07:05:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116234 to 116232. [2024-11-09 07:05:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116232 states, 116231 states have (on average 1.4986105255912794) internal successors, (174185), 116231 states have internal predecessors, (174185), 0 states have call successors, (0), 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 07:05:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116232 states to 116232 states and 174185 transitions. [2024-11-09 07:05:09,924 INFO L78 Accepts]: Start accepts. Automaton has 116232 states and 174185 transitions. Word has length 265 [2024-11-09 07:05:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:05:09,924 INFO L471 AbstractCegarLoop]: Abstraction has 116232 states and 174185 transitions. [2024-11-09 07:05:09,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 07:05:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 116232 states and 174185 transitions. [2024-11-09 07:05:09,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-09 07:05:09,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:09,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:09,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 07:05:09,964 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:09,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:09,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1996381816, now seen corresponding path program 1 times [2024-11-09 07:05:09,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:05:09,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979979950] [2024-11-09 07:05:09,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:09,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:05:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:10,197 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 07:05:10,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:05:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979979950] [2024-11-09 07:05:10,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979979950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:10,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:05:10,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:05:10,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805712441] [2024-11-09 07:05:10,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:10,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:05:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:05:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:05:10,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:05:10,201 INFO L87 Difference]: Start difference. First operand 116232 states and 174185 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 07:05:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:11,730 INFO L93 Difference]: Finished difference Result 319191 states and 478418 transitions. [2024-11-09 07:05:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:05:11,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 265 [2024-11-09 07:05:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:12,470 INFO L225 Difference]: With dead ends: 319191 [2024-11-09 07:05:12,471 INFO L226 Difference]: Without dead ends: 205636 [2024-11-09 07:05:12,570 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 07:05:12,576 INFO L432 NwaCegarLoop]: 1387 mSDtfsCounter, 785 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:12,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 2230 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:05:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205636 states. [2024-11-09 07:05:14,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205636 to 116409. [2024-11-09 07:05:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116409 states, 116408 states have (on average 1.4981874098000136) internal successors, (174401), 116408 states have internal predecessors, (174401), 0 states have call successors, (0), 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 07:05:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116409 states to 116409 states and 174401 transitions. [2024-11-09 07:05:15,251 INFO L78 Accepts]: Start accepts. Automaton has 116409 states and 174401 transitions. Word has length 265 [2024-11-09 07:05:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:05:15,251 INFO L471 AbstractCegarLoop]: Abstraction has 116409 states and 174401 transitions. [2024-11-09 07:05:15,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 07:05:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 116409 states and 174401 transitions. [2024-11-09 07:05:15,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-09 07:05:15,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:15,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:15,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 07:05:15,323 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:15,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1191585020, now seen corresponding path program 1 times [2024-11-09 07:05:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:05:15,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577007976] [2024-11-09 07:05:15,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:15,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:05:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:17,832 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 07:05:17,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:05:17,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577007976] [2024-11-09 07:05:17,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577007976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:17,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:05:17,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:05:17,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902968160] [2024-11-09 07:05:17,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:17,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:05:17,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:05:17,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:05:17,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:05:17,835 INFO L87 Difference]: Start difference. First operand 116409 states and 174401 transitions. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:05:19,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:19,228 INFO L93 Difference]: Finished difference Result 299340 states and 449118 transitions. [2024-11-09 07:05:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:05:19,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2024-11-09 07:05:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:19,433 INFO L225 Difference]: With dead ends: 299340 [2024-11-09 07:05:19,433 INFO L226 Difference]: Without dead ends: 187006 [2024-11-09 07:05:19,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:05:19,512 INFO L432 NwaCegarLoop]: 1684 mSDtfsCounter, 854 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 5056 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:19,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 5056 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:05:19,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187006 states. [2024-11-09 07:05:22,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187006 to 116219. [2024-11-09 07:05:22,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116219 states, 116218 states have (on average 1.4985458362732107) internal successors, (174158), 116218 states have internal predecessors, (174158), 0 states have call successors, (0), 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 07:05:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116219 states to 116219 states and 174158 transitions. [2024-11-09 07:05:22,853 INFO L78 Accepts]: Start accepts. Automaton has 116219 states and 174158 transitions. Word has length 266 [2024-11-09 07:05:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:05:22,853 INFO L471 AbstractCegarLoop]: Abstraction has 116219 states and 174158 transitions. [2024-11-09 07:05:22,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:05:22,853 INFO L276 IsEmpty]: Start isEmpty. Operand 116219 states and 174158 transitions. [2024-11-09 07:05:22,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-09 07:05:22,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:22,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:22,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 07:05:22,882 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:22,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:22,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1869796472, now seen corresponding path program 1 times [2024-11-09 07:05:22,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:05:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690194806] [2024-11-09 07:05:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:22,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:05:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:24,377 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 07:05:24,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:05:24,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690194806] [2024-11-09 07:05:24,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690194806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:24,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:05:24,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:05:24,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587868030] [2024-11-09 07:05:24,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:24,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:05:24,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:05:24,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:05:24,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:05:24,380 INFO L87 Difference]: Start difference. First operand 116219 states and 174158 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 07:05:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:26,981 INFO L93 Difference]: Finished difference Result 566631 states and 847809 transitions. [2024-11-09 07:05:26,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:05:26,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2024-11-09 07:05:26,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:27,582 INFO L225 Difference]: With dead ends: 566631 [2024-11-09 07:05:27,582 INFO L226 Difference]: Without dead ends: 450639 [2024-11-09 07:05:27,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:05:27,658 INFO L432 NwaCegarLoop]: 1105 mSDtfsCounter, 2932 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2932 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:27,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2932 Valid, 3125 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:05:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450639 states. [2024-11-09 07:05:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450639 to 225653. [2024-11-09 07:05:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225653 states, 225652 states have (on average 1.4890805310832609) internal successors, (336014), 225652 states have internal predecessors, (336014), 0 states have call successors, (0), 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 07:05:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225653 states to 225653 states and 336014 transitions. [2024-11-09 07:05:34,840 INFO L78 Accepts]: Start accepts. Automaton has 225653 states and 336014 transitions. Word has length 268 [2024-11-09 07:05:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:05:34,840 INFO L471 AbstractCegarLoop]: Abstraction has 225653 states and 336014 transitions. [2024-11-09 07:05:34,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 07:05:34,841 INFO L276 IsEmpty]: Start isEmpty. Operand 225653 states and 336014 transitions. [2024-11-09 07:05:34,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-09 07:05:34,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:34,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:34,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 07:05:34,917 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:34,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:34,918 INFO L85 PathProgramCache]: Analyzing trace with hash 293926928, now seen corresponding path program 1 times [2024-11-09 07:05:34,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:05:34,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610356779] [2024-11-09 07:05:34,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:34,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:05:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:35,223 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 07:05:35,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:05:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610356779] [2024-11-09 07:05:35,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610356779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:35,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:05:35,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:05:35,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214803049] [2024-11-09 07:05:35,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:35,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:05:35,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:05:35,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:05:35,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:05:35,228 INFO L87 Difference]: Start difference. First operand 225653 states and 336014 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 07:05:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:38,132 INFO L93 Difference]: Finished difference Result 646220 states and 960106 transitions. [2024-11-09 07:05:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:05:38,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 270 [2024-11-09 07:05:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:39,603 INFO L225 Difference]: With dead ends: 646220 [2024-11-09 07:05:39,603 INFO L226 Difference]: Without dead ends: 425158 [2024-11-09 07:05:39,716 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 07:05:39,717 INFO L432 NwaCegarLoop]: 1629 mSDtfsCounter, 762 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:39,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 2438 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:05:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425158 states.