./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e806b2de9400f1b211ac03466f80bb324cfea44da3c1d913127efd4a407821e8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:36:35,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:36:35,686 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:36:35,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:36:35,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:36:35,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:36:35,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:36:35,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:36:35,716 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:36:35,717 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:36:35,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:36:35,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:36:35,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:36:35,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:36:35,720 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:36:35,720 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:36:35,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:36:35,721 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:36:35,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:36:35,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:36:35,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:36:35,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:36:35,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:36:35,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:36:35,725 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:36:35,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:36:35,726 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:36:35,726 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:36:35,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:36:35,727 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:36:35,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:36:35,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:36:35,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:36:35,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:36:35,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:36:35,730 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:36:35,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:36:35,731 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:36:35,731 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:36:35,732 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:36:35,732 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:36:35,732 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:36:35,733 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e806b2de9400f1b211ac03466f80bb324cfea44da3c1d913127efd4a407821e8 [2023-11-29 05:36:35,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:36:35,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:36:35,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:36:35,979 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:36:35,980 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:36:35,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-29 05:36:38,719 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:36:38,912 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:36:38,913 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-29 05:36:38,924 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/data/12d67f360/76c1df8daa0a4bf5b25a8dc205b787ce/FLAG1eb0201d0 [2023-11-29 05:36:38,935 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/data/12d67f360/76c1df8daa0a4bf5b25a8dc205b787ce [2023-11-29 05:36:38,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:36:38,938 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:36:38,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:36:38,939 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:36:38,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:36:38,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:36:38" (1/1) ... [2023-11-29 05:36:38,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7383bf97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:38, skipping insertion in model container [2023-11-29 05:36:38,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:36:38" (1/1) ... [2023-11-29 05:36:38,987 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:36:39,172 WARN L240 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_56bc19b3-5448-4652-b0f7-f499b99e6d08/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7399,7412] [2023-11-29 05:36:39,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:36:39,233 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:36:39,283 WARN L240 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_56bc19b3-5448-4652-b0f7-f499b99e6d08/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7399,7412] [2023-11-29 05:36:39,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:36:39,331 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:36:39,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39 WrapperNode [2023-11-29 05:36:39,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:36:39,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:36:39,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:36:39,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:36:39,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,391 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 670 [2023-11-29 05:36:39,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:36:39,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:36:39,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:36:39,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:36:39,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,405 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,424 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 05:36:39,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:36:39,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:36:39,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:36:39,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:36:39,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (1/1) ... [2023-11-29 05:36:39,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:36:39,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:36:39,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:36:39,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:36:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:36:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:36:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:36:39,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:36:39,648 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:36:39,650 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:36:40,155 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:36:40,196 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:36:40,196 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 05:36:40,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:36:40 BoogieIcfgContainer [2023-11-29 05:36:40,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:36:40,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:36:40,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:36:40,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:36:40,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:36:38" (1/3) ... [2023-11-29 05:36:40,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b96691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:36:40, skipping insertion in model container [2023-11-29 05:36:40,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:39" (2/3) ... [2023-11-29 05:36:40,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b96691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:36:40, skipping insertion in model container [2023-11-29 05:36:40,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:36:40" (3/3) ... [2023-11-29 05:36:40,206 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-29 05:36:40,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:36:40,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:36:40,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:36:40,288 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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;@787ed5fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:36:40,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:36:40,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 161 states have (on average 1.7080745341614907) internal successors, (275), 162 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 05:36:40,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:40,306 INFO L195 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] [2023-11-29 05:36:40,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:40,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:40,311 INFO L85 PathProgramCache]: Analyzing trace with hash 392947854, now seen corresponding path program 1 times [2023-11-29 05:36:40,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:40,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143799242] [2023-11-29 05:36:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:40,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:40,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:40,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143799242] [2023-11-29 05:36:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143799242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:40,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:40,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:36:40,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961265497] [2023-11-29 05:36:40,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:40,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:36:40,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:36:40,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:40,740 INFO L87 Difference]: Start difference. First operand has 163 states, 161 states have (on average 1.7080745341614907) internal successors, (275), 162 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:40,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:40,812 INFO L93 Difference]: Finished difference Result 387 states and 629 transitions. [2023-11-29 05:36:40,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:36:40,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-11-29 05:36:40,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:40,827 INFO L225 Difference]: With dead ends: 387 [2023-11-29 05:36:40,827 INFO L226 Difference]: Without dead ends: 263 [2023-11-29 05:36:40,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:40,834 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 204 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:40,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:36:40,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-29 05:36:40,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2023-11-29 05:36:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.5038461538461538) internal successors, (391), 260 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 391 transitions. [2023-11-29 05:36:40,880 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 391 transitions. Word has length 73 [2023-11-29 05:36:40,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:40,881 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 391 transitions. [2023-11-29 05:36:40,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:40,882 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 391 transitions. [2023-11-29 05:36:40,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 05:36:40,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:40,885 INFO L195 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] [2023-11-29 05:36:40,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:36:40,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:40,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1229398867, now seen corresponding path program 1 times [2023-11-29 05:36:40,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:40,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657923094] [2023-11-29 05:36:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:40,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:41,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:41,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657923094] [2023-11-29 05:36:41,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657923094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:41,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:41,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:36:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309351145] [2023-11-29 05:36:41,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:41,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:36:41,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:41,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:36:41,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:41,044 INFO L87 Difference]: Start difference. First operand 261 states and 391 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:41,073 INFO L93 Difference]: Finished difference Result 665 states and 1035 transitions. [2023-11-29 05:36:41,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:36:41,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-29 05:36:41,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:41,077 INFO L225 Difference]: With dead ends: 665 [2023-11-29 05:36:41,077 INFO L226 Difference]: Without dead ends: 447 [2023-11-29 05:36:41,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:41,080 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 166 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:41,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 518 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:36:41,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-29 05:36:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 445. [2023-11-29 05:36:41,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.5405405405405406) internal successors, (684), 444 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 684 transitions. [2023-11-29 05:36:41,107 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 684 transitions. Word has length 74 [2023-11-29 05:36:41,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:41,108 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 684 transitions. [2023-11-29 05:36:41,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,108 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 684 transitions. [2023-11-29 05:36:41,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 05:36:41,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:41,110 INFO L195 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] [2023-11-29 05:36:41,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:36:41,111 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:41,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash 448668023, now seen corresponding path program 1 times [2023-11-29 05:36:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:41,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152978349] [2023-11-29 05:36:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:41,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:41,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152978349] [2023-11-29 05:36:41,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152978349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:41,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:41,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:36:41,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670716199] [2023-11-29 05:36:41,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:41,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:36:41,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:41,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:36:41,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:41,223 INFO L87 Difference]: Start difference. First operand 445 states and 684 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:41,251 INFO L93 Difference]: Finished difference Result 1185 states and 1862 transitions. [2023-11-29 05:36:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:36:41,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-29 05:36:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:41,256 INFO L225 Difference]: With dead ends: 1185 [2023-11-29 05:36:41,257 INFO L226 Difference]: Without dead ends: 783 [2023-11-29 05:36:41,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:41,260 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 161 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:41,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 503 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:36:41,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-11-29 05:36:41,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 781. [2023-11-29 05:36:41,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 780 states have (on average 1.558974358974359) internal successors, (1216), 780 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1216 transitions. [2023-11-29 05:36:41,288 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1216 transitions. Word has length 75 [2023-11-29 05:36:41,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:41,289 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1216 transitions. [2023-11-29 05:36:41,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1216 transitions. [2023-11-29 05:36:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 05:36:41,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:41,291 INFO L195 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] [2023-11-29 05:36:41,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:36:41,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:41,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:41,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1615933306, now seen corresponding path program 1 times [2023-11-29 05:36:41,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:41,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458847765] [2023-11-29 05:36:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:41,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:41,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:41,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458847765] [2023-11-29 05:36:41,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458847765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:41,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:41,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:36:41,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378631370] [2023-11-29 05:36:41,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:41,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:36:41,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:41,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:36:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:41,388 INFO L87 Difference]: Start difference. First operand 781 states and 1216 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:41,421 INFO L93 Difference]: Finished difference Result 2129 states and 3354 transitions. [2023-11-29 05:36:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:36:41,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-11-29 05:36:41,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:41,430 INFO L225 Difference]: With dead ends: 2129 [2023-11-29 05:36:41,430 INFO L226 Difference]: Without dead ends: 1391 [2023-11-29 05:36:41,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:41,433 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 156 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:41,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 488 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:36:41,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2023-11-29 05:36:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1389. [2023-11-29 05:36:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1388 states have (on average 1.5648414985590777) internal successors, (2172), 1388 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 2172 transitions. [2023-11-29 05:36:41,472 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 2172 transitions. Word has length 76 [2023-11-29 05:36:41,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:41,473 INFO L495 AbstractCegarLoop]: Abstraction has 1389 states and 2172 transitions. [2023-11-29 05:36:41,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 2172 transitions. [2023-11-29 05:36:41,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 05:36:41,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:41,474 INFO L195 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] [2023-11-29 05:36:41,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:36:41,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:41,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash -235913612, now seen corresponding path program 1 times [2023-11-29 05:36:41,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:41,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875494101] [2023-11-29 05:36:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:41,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:41,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:41,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875494101] [2023-11-29 05:36:41,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875494101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:41,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:41,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:36:41,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72381955] [2023-11-29 05:36:41,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:41,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:36:41,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:41,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:36:41,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:41,565 INFO L87 Difference]: Start difference. First operand 1389 states and 2172 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:41,606 INFO L93 Difference]: Finished difference Result 3825 states and 6014 transitions. [2023-11-29 05:36:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:36:41,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-29 05:36:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:41,621 INFO L225 Difference]: With dead ends: 3825 [2023-11-29 05:36:41,621 INFO L226 Difference]: Without dead ends: 2479 [2023-11-29 05:36:41,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:41,624 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 151 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:41,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 473 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:36:41,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2023-11-29 05:36:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2477. [2023-11-29 05:36:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2476 states have (on average 1.5621970920840065) internal successors, (3868), 2476 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3868 transitions. [2023-11-29 05:36:41,709 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3868 transitions. Word has length 77 [2023-11-29 05:36:41,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:41,709 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3868 transitions. [2023-11-29 05:36:41,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:41,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3868 transitions. [2023-11-29 05:36:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:36:41,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:41,711 INFO L195 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] [2023-11-29 05:36:41,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:36:41,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:41,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:41,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1036248525, now seen corresponding path program 1 times [2023-11-29 05:36:41,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:41,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625100521] [2023-11-29 05:36:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:41,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:41,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:41,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625100521] [2023-11-29 05:36:41,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625100521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:41,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:41,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:36:41,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627751468] [2023-11-29 05:36:41,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:41,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:36:41,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:41,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:36:41,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:36:41,915 INFO L87 Difference]: Start difference. First operand 2477 states and 3868 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:42,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:42,241 INFO L93 Difference]: Finished difference Result 19515 states and 30643 transitions. [2023-11-29 05:36:42,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:36:42,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-29 05:36:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:42,338 INFO L225 Difference]: With dead ends: 19515 [2023-11-29 05:36:42,339 INFO L226 Difference]: Without dead ends: 17081 [2023-11-29 05:36:42,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:36:42,346 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 2601 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2601 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:42,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2601 Valid, 3270 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:36:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17081 states. [2023-11-29 05:36:42,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17081 to 4909. [2023-11-29 05:36:42,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4909 states, 4908 states have (on average 1.554197229013855) internal successors, (7628), 4908 states have internal predecessors, (7628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4909 states to 4909 states and 7628 transitions. [2023-11-29 05:36:42,622 INFO L78 Accepts]: Start accepts. Automaton has 4909 states and 7628 transitions. Word has length 78 [2023-11-29 05:36:42,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:42,623 INFO L495 AbstractCegarLoop]: Abstraction has 4909 states and 7628 transitions. [2023-11-29 05:36:42,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:42,623 INFO L276 IsEmpty]: Start isEmpty. Operand 4909 states and 7628 transitions. [2023-11-29 05:36:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 05:36:42,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:42,625 INFO L195 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] [2023-11-29 05:36:42,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:36:42,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:42,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:42,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2039477009, now seen corresponding path program 1 times [2023-11-29 05:36:42,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:42,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82039312] [2023-11-29 05:36:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:42,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:42,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:42,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82039312] [2023-11-29 05:36:42,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82039312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:42,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:42,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:36:42,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943586643] [2023-11-29 05:36:42,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:42,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:36:42,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:42,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:36:42,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:36:42,940 INFO L87 Difference]: Start difference. First operand 4909 states and 7628 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:43,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:43,233 INFO L93 Difference]: Finished difference Result 30105 states and 46546 transitions. [2023-11-29 05:36:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:36:43,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-29 05:36:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:43,289 INFO L225 Difference]: With dead ends: 30105 [2023-11-29 05:36:43,289 INFO L226 Difference]: Without dead ends: 25239 [2023-11-29 05:36:43,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:36:43,300 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 909 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:43,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1759 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:36:43,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25239 states. [2023-11-29 05:36:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25239 to 25229. [2023-11-29 05:36:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25229 states, 25228 states have (on average 1.5416204217536071) internal successors, (38892), 25228 states have internal predecessors, (38892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25229 states to 25229 states and 38892 transitions. [2023-11-29 05:36:43,797 INFO L78 Accepts]: Start accepts. Automaton has 25229 states and 38892 transitions. Word has length 79 [2023-11-29 05:36:43,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:43,798 INFO L495 AbstractCegarLoop]: Abstraction has 25229 states and 38892 transitions. [2023-11-29 05:36:43,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:43,798 INFO L276 IsEmpty]: Start isEmpty. Operand 25229 states and 38892 transitions. [2023-11-29 05:36:43,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 05:36:43,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:43,800 INFO L195 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] [2023-11-29 05:36:43,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:36:43,800 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:43,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash -772614425, now seen corresponding path program 1 times [2023-11-29 05:36:43,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:43,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591384444] [2023-11-29 05:36:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:43,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:43,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591384444] [2023-11-29 05:36:43,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591384444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:43,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:43,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:36:43,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663074476] [2023-11-29 05:36:43,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:43,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:36:43,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:36:43,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:43,856 INFO L87 Difference]: Start difference. First operand 25229 states and 38892 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:44,120 INFO L93 Difference]: Finished difference Result 69009 states and 105966 transitions. [2023-11-29 05:36:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:36:44,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-11-29 05:36:44,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:44,189 INFO L225 Difference]: With dead ends: 69009 [2023-11-29 05:36:44,190 INFO L226 Difference]: Without dead ends: 43823 [2023-11-29 05:36:44,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:44,219 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 173 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:44,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 558 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:36:44,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43823 states. [2023-11-29 05:36:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43823 to 43821. [2023-11-29 05:36:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43821 states, 43820 states have (on average 1.5228662711090826) internal successors, (66732), 43820 states have internal predecessors, (66732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43821 states to 43821 states and 66732 transitions. [2023-11-29 05:36:45,190 INFO L78 Accepts]: Start accepts. Automaton has 43821 states and 66732 transitions. Word has length 80 [2023-11-29 05:36:45,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:45,191 INFO L495 AbstractCegarLoop]: Abstraction has 43821 states and 66732 transitions. [2023-11-29 05:36:45,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 43821 states and 66732 transitions. [2023-11-29 05:36:45,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 05:36:45,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:45,193 INFO L195 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] [2023-11-29 05:36:45,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:36:45,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:45,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:45,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1298893048, now seen corresponding path program 1 times [2023-11-29 05:36:45,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:45,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572358121] [2023-11-29 05:36:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:45,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:45,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:45,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572358121] [2023-11-29 05:36:45,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572358121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:45,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:45,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:36:45,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966831713] [2023-11-29 05:36:45,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:45,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:36:45,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:45,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:36:45,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:36:45,340 INFO L87 Difference]: Start difference. First operand 43821 states and 66732 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:46,115 INFO L93 Difference]: Finished difference Result 125041 states and 190574 transitions. [2023-11-29 05:36:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:36:46,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-29 05:36:46,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:46,291 INFO L225 Difference]: With dead ends: 125041 [2023-11-29 05:36:46,292 INFO L226 Difference]: Without dead ends: 81263 [2023-11-29 05:36:46,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:36:46,327 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1007 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:46,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 258 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:36:46,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81263 states. [2023-11-29 05:36:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81263 to 81261. [2023-11-29 05:36:47,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81261 states, 81260 states have (on average 1.5158749692345557) internal successors, (123180), 81260 states have internal predecessors, (123180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81261 states to 81261 states and 123180 transitions. [2023-11-29 05:36:47,594 INFO L78 Accepts]: Start accepts. Automaton has 81261 states and 123180 transitions. Word has length 81 [2023-11-29 05:36:47,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:47,594 INFO L495 AbstractCegarLoop]: Abstraction has 81261 states and 123180 transitions. [2023-11-29 05:36:47,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 81261 states and 123180 transitions. [2023-11-29 05:36:47,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 05:36:47,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:47,595 INFO L195 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] [2023-11-29 05:36:47,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:36:47,596 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:47,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:47,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1869309629, now seen corresponding path program 1 times [2023-11-29 05:36:47,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:47,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665263758] [2023-11-29 05:36:47,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:47,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:47,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:47,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665263758] [2023-11-29 05:36:47,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665263758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:47,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:47,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:36:47,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585997387] [2023-11-29 05:36:47,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:47,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:36:47,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:47,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:36:47,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:36:47,870 INFO L87 Difference]: Start difference. First operand 81261 states and 123180 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:48,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:48,433 INFO L93 Difference]: Finished difference Result 165295 states and 249133 transitions. [2023-11-29 05:36:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:36:48,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-29 05:36:48,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:48,669 INFO L225 Difference]: With dead ends: 165295 [2023-11-29 05:36:48,669 INFO L226 Difference]: Without dead ends: 165293 [2023-11-29 05:36:48,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:36:48,715 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 364 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:48,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1138 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:36:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165293 states. [2023-11-29 05:36:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165293 to 84077. [2023-11-29 05:36:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84077 states, 84076 states have (on average 1.4985965079214045) internal successors, (125996), 84076 states have internal predecessors, (125996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:50,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84077 states to 84077 states and 125996 transitions. [2023-11-29 05:36:50,758 INFO L78 Accepts]: Start accepts. Automaton has 84077 states and 125996 transitions. Word has length 81 [2023-11-29 05:36:50,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:50,758 INFO L495 AbstractCegarLoop]: Abstraction has 84077 states and 125996 transitions. [2023-11-29 05:36:50,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:50,758 INFO L276 IsEmpty]: Start isEmpty. Operand 84077 states and 125996 transitions. [2023-11-29 05:36:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 05:36:50,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:50,759 INFO L195 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] [2023-11-29 05:36:50,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:36:50,760 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:50,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:50,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2103450517, now seen corresponding path program 1 times [2023-11-29 05:36:50,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:50,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691386764] [2023-11-29 05:36:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:50,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:50,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:50,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691386764] [2023-11-29 05:36:50,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691386764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:50,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:50,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:36:50,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402005410] [2023-11-29 05:36:50,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:50,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:36:50,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:50,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:36:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:50,850 INFO L87 Difference]: Start difference. First operand 84077 states and 125996 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:51,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:51,439 INFO L93 Difference]: Finished difference Result 189715 states and 283808 transitions. [2023-11-29 05:36:51,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:36:51,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-11-29 05:36:51,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:51,536 INFO L225 Difference]: With dead ends: 189715 [2023-11-29 05:36:51,536 INFO L226 Difference]: Without dead ends: 105681 [2023-11-29 05:36:51,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:36:51,566 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 138 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:51,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 412 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:36:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105681 states. [2023-11-29 05:36:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105681 to 105327. [2023-11-29 05:36:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105327 states, 105326 states have (on average 1.4886922507263163) internal successors, (156798), 105326 states have internal predecessors, (156798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105327 states to 105327 states and 156798 transitions. [2023-11-29 05:36:52,954 INFO L78 Accepts]: Start accepts. Automaton has 105327 states and 156798 transitions. Word has length 82 [2023-11-29 05:36:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:52,954 INFO L495 AbstractCegarLoop]: Abstraction has 105327 states and 156798 transitions. [2023-11-29 05:36:52,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 105327 states and 156798 transitions. [2023-11-29 05:36:52,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 05:36:52,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:52,988 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:36:52,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:36:52,988 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:52,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:52,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1458717462, now seen corresponding path program 1 times [2023-11-29 05:36:52,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:52,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609354350] [2023-11-29 05:36:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:52,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:53,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:53,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609354350] [2023-11-29 05:36:53,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609354350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:36:53,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105066183] [2023-11-29 05:36:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:53,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:36:53,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:36:53,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:36:53,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:36:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:53,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:36:53,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:36:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:36:54,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:36:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:36:54,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105066183] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:36:54,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:36:54,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 13 [2023-11-29 05:36:54,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035683714] [2023-11-29 05:36:54,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:36:54,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:36:54,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:54,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:36:54,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:36:54,404 INFO L87 Difference]: Start difference. First operand 105327 states and 156798 transitions. Second operand has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:37:08,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:08,412 INFO L93 Difference]: Finished difference Result 1962411 states and 2897756 transitions. [2023-11-29 05:37:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-11-29 05:37:08,413 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 0 states have call successors, (0), 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 113 [2023-11-29 05:37:08,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:10,966 INFO L225 Difference]: With dead ends: 1962411 [2023-11-29 05:37:10,966 INFO L226 Difference]: Without dead ends: 1857129 [2023-11-29 05:37:11,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8241 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3232, Invalid=15128, Unknown=0, NotChecked=0, Total=18360 [2023-11-29 05:37:11,231 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 16515 mSDsluCounter, 4938 mSDsCounter, 0 mSdLazyCounter, 4936 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16515 SdHoareTripleChecker+Valid, 6005 SdHoareTripleChecker+Invalid, 5001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:11,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16515 Valid, 6005 Invalid, 5001 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 4936 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 05:37:12,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857129 states. [2023-11-29 05:37:24,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857129 to 600063. [2023-11-29 05:37:25,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600063 states, 600062 states have (on average 1.4657118764394346) internal successors, (879518), 600062 states have internal predecessors, (879518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:37:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600063 states to 600063 states and 879518 transitions. [2023-11-29 05:37:26,854 INFO L78 Accepts]: Start accepts. Automaton has 600063 states and 879518 transitions. Word has length 113 [2023-11-29 05:37:26,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:26,854 INFO L495 AbstractCegarLoop]: Abstraction has 600063 states and 879518 transitions. [2023-11-29 05:37:26,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:37:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 600063 states and 879518 transitions. [2023-11-29 05:37:26,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 05:37:26,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:26,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:26,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:37:27,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bc19b3-5448-4652-b0f7-f499b99e6d08/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:27,088 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:27,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash 614864394, now seen corresponding path program 1 times [2023-11-29 05:37:27,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:27,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175653499] [2023-11-29 05:37:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:27,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:37:27,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:27,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175653499] [2023-11-29 05:37:27,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175653499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:27,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:27,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:37:27,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879697095] [2023-11-29 05:37:27,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:27,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:37:27,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:27,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:37:27,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:37:27,171 INFO L87 Difference]: Start difference. First operand 600063 states and 879518 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:37:31,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:31,195 INFO L93 Difference]: Finished difference Result 1399748 states and 2057698 transitions. [2023-11-29 05:37:31,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:37:31,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-11-29 05:37:31,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:32,149 INFO L225 Difference]: With dead ends: 1399748 [2023-11-29 05:37:32,149 INFO L226 Difference]: Without dead ends: 859426 [2023-11-29 05:37:32,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:37:32,309 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 141 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:32,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 589 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:37:32,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859426 states. [2023-11-29 05:37:41,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859426 to 859424. [2023-11-29 05:37:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859424 states, 859423 states have (on average 1.4594722272966862) internal successors, (1254304), 859423 states have internal predecessors, (1254304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:37:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859424 states to 859424 states and 1254304 transitions. [2023-11-29 05:37:44,274 INFO L78 Accepts]: Start accepts. Automaton has 859424 states and 1254304 transitions. Word has length 113 [2023-11-29 05:37:44,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:44,274 INFO L495 AbstractCegarLoop]: Abstraction has 859424 states and 1254304 transitions. [2023-11-29 05:37:44,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:37:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 859424 states and 1254304 transitions. [2023-11-29 05:37:44,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 05:37:44,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:44,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:44,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:37:44,316 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:44,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1155762847, now seen corresponding path program 1 times [2023-11-29 05:37:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:44,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370865220] [2023-11-29 05:37:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 05:37:44,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:44,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370865220] [2023-11-29 05:37:44,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370865220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:44,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:44,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:37:44,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984357004] [2023-11-29 05:37:44,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:44,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:37:44,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:44,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:37:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:37:44,526 INFO L87 Difference]: Start difference. First operand 859424 states and 1254304 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:37:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:51,198 INFO L93 Difference]: Finished difference Result 2319278 states and 3405991 transitions. [2023-11-29 05:37:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:37:51,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 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 113 [2023-11-29 05:37:51,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:54,026 INFO L225 Difference]: With dead ends: 2319278 [2023-11-29 05:37:54,027 INFO L226 Difference]: Without dead ends: 1912476 [2023-11-29 05:37:54,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:37:54,311 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 2292 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2292 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:54,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2292 Valid, 2138 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:37:55,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912476 states. [2023-11-29 05:38:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912476 to 1220032. [2023-11-29 05:38:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220032 states, 1220031 states have (on average 1.4573662472510944) internal successors, (1778032), 1220031 states have internal predecessors, (1778032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220032 states to 1220032 states and 1778032 transitions. [2023-11-29 05:38:14,470 INFO L78 Accepts]: Start accepts. Automaton has 1220032 states and 1778032 transitions. Word has length 113 [2023-11-29 05:38:14,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:38:14,470 INFO L495 AbstractCegarLoop]: Abstraction has 1220032 states and 1778032 transitions. [2023-11-29 05:38:14,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:14,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1220032 states and 1778032 transitions. [2023-11-29 05:38:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 05:38:14,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:38:14,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:38:14,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:38:14,503 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:38:14,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:38:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash -260040166, now seen corresponding path program 1 times [2023-11-29 05:38:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:38:14,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880006059] [2023-11-29 05:38:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:38:14,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:38:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:38:14,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:38:14,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880006059] [2023-11-29 05:38:14,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880006059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:38:14,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:38:14,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:38:14,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633107013] [2023-11-29 05:38:14,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:38:14,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:38:14,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:38:14,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:38:14,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:38:14,565 INFO L87 Difference]: Start difference. First operand 1220032 states and 1778032 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)