./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC --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 74d57b3f1e9a386b0ff6bac396d798184771ae1b1b0bb917f750fc3ebefb1c2f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:27:34,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:27:34,678 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:27:34,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:27:34,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:27:34,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:27:34,709 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:27:34,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:27:34,709 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:27:34,709 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:27:34,709 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:27:34,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:27:34,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:27:34,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:27:34,710 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:27:34,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:27:34,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:27:34,710 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:27:34,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:27:34,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:27:34,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:27:34,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:27:34,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:27:34,711 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:27:34,711 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:27:34,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:27:34,711 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:27:34,711 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:27:34,711 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:27:34,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:27:34,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:27:34,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:27:34,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:27:34,712 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:27:34,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:27:34,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:27:34,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:27:34,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:27:34,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:27:34,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:27:34,713 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:27:34,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:27:34,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:27:34,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:27:34,714 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:27:34,714 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:27:34,714 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:27:34,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:27:34,714 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC 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 -> 74d57b3f1e9a386b0ff6bac396d798184771ae1b1b0bb917f750fc3ebefb1c2f [2024-11-24 01:27:35,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:27:35,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:27:35,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:27:35,020 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:27:35,021 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:27:35,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-11-24 01:27:37,987 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/data/4d9c6e909/3447977491614c41a94483f9fb5a066c/FLAG870336d68 [2024-11-24 01:27:38,289 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:27:38,293 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-11-24 01:27:38,311 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/data/4d9c6e909/3447977491614c41a94483f9fb5a066c/FLAG870336d68 [2024-11-24 01:27:38,333 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/data/4d9c6e909/3447977491614c41a94483f9fb5a066c [2024-11-24 01:27:38,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:27:38,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:27:38,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:27:38,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:27:38,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:27:38,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19182011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38, skipping insertion in model container [2024-11-24 01:27:38,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,399 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:27:38,697 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6874,6887] [2024-11-24 01:27:38,726 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9049,9062] [2024-11-24 01:27:38,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:27:38,756 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:27:38,835 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6874,6887] [2024-11-24 01:27:38,854 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9049,9062] [2024-11-24 01:27:38,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:27:38,893 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:27:38,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38 WrapperNode [2024-11-24 01:27:38,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:27:38,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:27:38,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:27:38,896 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:27:38,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,954 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 483 [2024-11-24 01:27:38,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:27:38,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:27:38,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:27:38,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:27:38,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,983 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]. [2024-11-24 01:27:38,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,991 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:38,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:39,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:39,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:27:39,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:27:39,005 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:27:39,005 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:27:39,006 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (1/1) ... [2024-11-24 01:27:39,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:27:39,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:27:39,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:27:39,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:27:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:27:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:27:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:27:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:27:39,226 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:27:39,229 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:27:39,888 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2024-11-24 01:27:39,889 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:27:39,906 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:27:39,908 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:27:39,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:27:39 BoogieIcfgContainer [2024-11-24 01:27:39,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:27:39,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:27:39,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:27:39,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:27:39,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:27:38" (1/3) ... [2024-11-24 01:27:39,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214c28c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:27:39, skipping insertion in model container [2024-11-24 01:27:39,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:27:38" (2/3) ... [2024-11-24 01:27:39,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214c28c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:27:39, skipping insertion in model container [2024-11-24 01:27:39,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:27:39" (3/3) ... [2024-11-24 01:27:39,922 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-11-24 01:27:39,941 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:27:39,944 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c that has 1 procedures, 106 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-24 01:27:40,017 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:27:40,033 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@2983db7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:27:40,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 01:27:40,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 105 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:40,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-24 01:27:40,047 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:40,048 INFO L218 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] [2024-11-24 01:27:40,049 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:40,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:40,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1096512752, now seen corresponding path program 1 times [2024-11-24 01:27:40,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:40,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193541033] [2024-11-24 01:27:40,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:40,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:40,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:40,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193541033] [2024-11-24 01:27:40,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193541033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:40,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:40,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:27:40,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4732743] [2024-11-24 01:27:40,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:40,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:27:40,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:40,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:27:40,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:27:40,833 INFO L87 Difference]: Start difference. First operand has 106 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 105 states have internal predecessors, (180), 0 states have call successors, (0), 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 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:41,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:41,145 INFO L93 Difference]: Finished difference Result 422 states and 668 transitions. [2024-11-24 01:27:41,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:27:41,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-24 01:27:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:41,161 INFO L225 Difference]: With dead ends: 422 [2024-11-24 01:27:41,161 INFO L226 Difference]: Without dead ends: 358 [2024-11-24 01:27:41,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:27:41,174 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 596 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:41,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 775 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:27:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-24 01:27:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 156. [2024-11-24 01:27:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 1.4415584415584415) internal successors, (222), 155 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 222 transitions. [2024-11-24 01:27:41,221 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 222 transitions. Word has length 47 [2024-11-24 01:27:41,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:41,221 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 222 transitions. [2024-11-24 01:27:41,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:41,221 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 222 transitions. [2024-11-24 01:27:41,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-24 01:27:41,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:41,223 INFO L218 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] [2024-11-24 01:27:41,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:27:41,223 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:41,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:41,224 INFO L85 PathProgramCache]: Analyzing trace with hash 191283016, now seen corresponding path program 1 times [2024-11-24 01:27:41,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:41,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235165214] [2024-11-24 01:27:41,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:41,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:41,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:41,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235165214] [2024-11-24 01:27:41,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235165214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:41,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:41,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:27:41,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310968449] [2024-11-24 01:27:41,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:41,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:27:41,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:41,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:27:41,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:27:41,422 INFO L87 Difference]: Start difference. First operand 156 states and 222 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:41,500 INFO L93 Difference]: Finished difference Result 247 states and 359 transitions. [2024-11-24 01:27:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:27:41,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-24 01:27:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:41,502 INFO L225 Difference]: With dead ends: 247 [2024-11-24 01:27:41,505 INFO L226 Difference]: Without dead ends: 160 [2024-11-24 01:27:41,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:27:41,506 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:41,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 305 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:27:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-24 01:27:41,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2024-11-24 01:27:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 156 states have (on average 1.4294871794871795) internal successors, (223), 157 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 223 transitions. [2024-11-24 01:27:41,524 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 223 transitions. Word has length 48 [2024-11-24 01:27:41,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:41,524 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 223 transitions. [2024-11-24 01:27:41,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 223 transitions. [2024-11-24 01:27:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 01:27:41,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:41,526 INFO L218 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] [2024-11-24 01:27:41,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:27:41,527 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:41,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:41,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1589815569, now seen corresponding path program 1 times [2024-11-24 01:27:41,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:41,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444853312] [2024-11-24 01:27:41,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:41,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:41,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:41,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444853312] [2024-11-24 01:27:41,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444853312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:41,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:41,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:27:41,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480009661] [2024-11-24 01:27:41,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:41,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:27:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:41,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:27:41,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:27:41,831 INFO L87 Difference]: Start difference. First operand 158 states and 223 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:41,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:41,975 INFO L93 Difference]: Finished difference Result 478 states and 707 transitions. [2024-11-24 01:27:41,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:27:41,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-24 01:27:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:41,978 INFO L225 Difference]: With dead ends: 478 [2024-11-24 01:27:41,980 INFO L226 Difference]: Without dead ends: 394 [2024-11-24 01:27:41,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:27:41,982 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 303 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:41,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 542 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:27:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-24 01:27:42,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 251. [2024-11-24 01:27:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 249 states have (on average 1.4698795180722892) internal successors, (366), 250 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:42,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 366 transitions. [2024-11-24 01:27:42,011 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 366 transitions. Word has length 49 [2024-11-24 01:27:42,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:42,011 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 366 transitions. [2024-11-24 01:27:42,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 366 transitions. [2024-11-24 01:27:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 01:27:42,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:42,013 INFO L218 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] [2024-11-24 01:27:42,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:27:42,013 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:42,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:42,015 INFO L85 PathProgramCache]: Analyzing trace with hash 727047131, now seen corresponding path program 1 times [2024-11-24 01:27:42,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:42,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180087982] [2024-11-24 01:27:42,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:42,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:42,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:42,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180087982] [2024-11-24 01:27:42,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180087982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:42,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:42,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:27:42,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587137786] [2024-11-24 01:27:42,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:42,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:27:42,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:42,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:27:42,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:27:42,266 INFO L87 Difference]: Start difference. First operand 251 states and 366 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:42,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:42,418 INFO L93 Difference]: Finished difference Result 566 states and 842 transitions. [2024-11-24 01:27:42,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:27:42,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-24 01:27:42,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:42,421 INFO L225 Difference]: With dead ends: 566 [2024-11-24 01:27:42,423 INFO L226 Difference]: Without dead ends: 482 [2024-11-24 01:27:42,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:27:42,427 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 363 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:42,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 547 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:27:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-24 01:27:42,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 382. [2024-11-24 01:27:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 380 states have (on average 1.4894736842105263) internal successors, (566), 381 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 566 transitions. [2024-11-24 01:27:42,450 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 566 transitions. Word has length 49 [2024-11-24 01:27:42,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:42,450 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 566 transitions. [2024-11-24 01:27:42,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:42,450 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 566 transitions. [2024-11-24 01:27:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 01:27:42,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:42,452 INFO L218 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] [2024-11-24 01:27:42,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:27:42,452 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:42,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:42,453 INFO L85 PathProgramCache]: Analyzing trace with hash 118541383, now seen corresponding path program 1 times [2024-11-24 01:27:42,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:42,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598818563] [2024-11-24 01:27:42,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:42,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:42,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:42,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598818563] [2024-11-24 01:27:42,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598818563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:42,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:42,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:27:42,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765602073] [2024-11-24 01:27:42,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:42,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:27:42,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:42,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:27:42,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:27:42,679 INFO L87 Difference]: Start difference. First operand 382 states and 566 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:42,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:42,859 INFO L93 Difference]: Finished difference Result 659 states and 985 transitions. [2024-11-24 01:27:42,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:27:42,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-24 01:27:42,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:42,865 INFO L225 Difference]: With dead ends: 659 [2024-11-24 01:27:42,866 INFO L226 Difference]: Without dead ends: 575 [2024-11-24 01:27:42,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:27:42,867 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 360 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:42,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 581 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:27:42,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-24 01:27:42,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 475. [2024-11-24 01:27:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4989429175475688) internal successors, (709), 474 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 709 transitions. [2024-11-24 01:27:42,896 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 709 transitions. Word has length 49 [2024-11-24 01:27:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:42,896 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 709 transitions. [2024-11-24 01:27:42,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 709 transitions. [2024-11-24 01:27:42,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-24 01:27:42,898 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:42,898 INFO L218 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] [2024-11-24 01:27:42,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:27:42,899 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:42,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:42,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2078764873, now seen corresponding path program 1 times [2024-11-24 01:27:42,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:42,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548763513] [2024-11-24 01:27:42,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:42,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:43,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:43,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548763513] [2024-11-24 01:27:43,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548763513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:43,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:43,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:27:43,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734325962] [2024-11-24 01:27:43,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:43,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:27:43,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:43,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:27:43,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:27:43,069 INFO L87 Difference]: Start difference. First operand 475 states and 709 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:43,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:43,231 INFO L93 Difference]: Finished difference Result 928 states and 1395 transitions. [2024-11-24 01:27:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:27:43,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-24 01:27:43,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:43,234 INFO L225 Difference]: With dead ends: 928 [2024-11-24 01:27:43,238 INFO L226 Difference]: Without dead ends: 475 [2024-11-24 01:27:43,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:27:43,239 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 384 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:43,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 82 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:27:43,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-24 01:27:43,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2024-11-24 01:27:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.477801268498943) internal successors, (699), 474 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 699 transitions. [2024-11-24 01:27:43,256 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 699 transitions. Word has length 50 [2024-11-24 01:27:43,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:43,257 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 699 transitions. [2024-11-24 01:27:43,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:43,257 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 699 transitions. [2024-11-24 01:27:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-24 01:27:43,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:43,258 INFO L218 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] [2024-11-24 01:27:43,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:27:43,259 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:43,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:43,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1832903282, now seen corresponding path program 1 times [2024-11-24 01:27:43,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:43,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862444431] [2024-11-24 01:27:43,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:43,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:43,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:43,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862444431] [2024-11-24 01:27:43,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862444431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:43,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:43,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:27:43,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675182256] [2024-11-24 01:27:43,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:43,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:27:43,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:43,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:27:43,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:27:43,428 INFO L87 Difference]: Start difference. First operand 475 states and 699 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:43,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:43,587 INFO L93 Difference]: Finished difference Result 924 states and 1371 transitions. [2024-11-24 01:27:43,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:27:43,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-24 01:27:43,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:43,590 INFO L225 Difference]: With dead ends: 924 [2024-11-24 01:27:43,590 INFO L226 Difference]: Without dead ends: 475 [2024-11-24 01:27:43,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:27:43,593 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 366 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:43,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 90 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:27:43,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-24 01:27:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2024-11-24 01:27:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4566596194503172) internal successors, (689), 474 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 689 transitions. [2024-11-24 01:27:43,610 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 689 transitions. Word has length 51 [2024-11-24 01:27:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:43,611 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 689 transitions. [2024-11-24 01:27:43,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:43,611 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 689 transitions. [2024-11-24 01:27:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-24 01:27:43,612 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:43,612 INFO L218 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] [2024-11-24 01:27:43,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:27:43,612 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:43,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1624812893, now seen corresponding path program 1 times [2024-11-24 01:27:43,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:43,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040873091] [2024-11-24 01:27:43,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:43,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:43,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:43,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040873091] [2024-11-24 01:27:43,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040873091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:43,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:43,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:27:43,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766571764] [2024-11-24 01:27:43,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:43,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:27:43,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:43,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:27:43,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:27:43,829 INFO L87 Difference]: Start difference. First operand 475 states and 689 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:44,012 INFO L93 Difference]: Finished difference Result 920 states and 1347 transitions. [2024-11-24 01:27:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:27:44,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-11-24 01:27:44,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:44,015 INFO L225 Difference]: With dead ends: 920 [2024-11-24 01:27:44,015 INFO L226 Difference]: Without dead ends: 475 [2024-11-24 01:27:44,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:27:44,017 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 348 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:44,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 98 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:27:44,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-24 01:27:44,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2024-11-24 01:27:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4355179704016914) internal successors, (679), 474 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 679 transitions. [2024-11-24 01:27:44,038 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 679 transitions. Word has length 52 [2024-11-24 01:27:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:44,038 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 679 transitions. [2024-11-24 01:27:44,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 679 transitions. [2024-11-24 01:27:44,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-24 01:27:44,040 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:44,040 INFO L218 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] [2024-11-24 01:27:44,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:27:44,040 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:44,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:44,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1423750650, now seen corresponding path program 1 times [2024-11-24 01:27:44,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:44,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662332565] [2024-11-24 01:27:44,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:44,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:44,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662332565] [2024-11-24 01:27:44,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662332565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:44,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:44,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:27:44,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137152500] [2024-11-24 01:27:44,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:44,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:27:44,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:44,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:27:44,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:27:44,680 INFO L87 Difference]: Start difference. First operand 475 states and 679 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:45,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:45,153 INFO L93 Difference]: Finished difference Result 1286 states and 1863 transitions. [2024-11-24 01:27:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:27:45,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-24 01:27:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:45,160 INFO L225 Difference]: With dead ends: 1286 [2024-11-24 01:27:45,160 INFO L226 Difference]: Without dead ends: 873 [2024-11-24 01:27:45,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:27:45,165 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 717 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:45,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 334 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:27:45,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-11-24 01:27:45,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 475. [2024-11-24 01:27:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4334038054968288) internal successors, (678), 474 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:45,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 678 transitions. [2024-11-24 01:27:45,189 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 678 transitions. Word has length 53 [2024-11-24 01:27:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:45,189 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 678 transitions. [2024-11-24 01:27:45,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:45,190 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 678 transitions. [2024-11-24 01:27:45,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-24 01:27:45,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:45,192 INFO L218 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] [2024-11-24 01:27:45,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:27:45,192 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:45,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:45,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1451758686, now seen corresponding path program 1 times [2024-11-24 01:27:45,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:45,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76221146] [2024-11-24 01:27:45,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:45,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:45,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:45,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76221146] [2024-11-24 01:27:45,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76221146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:45,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:45,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:27:45,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163739323] [2024-11-24 01:27:45,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:45,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:27:45,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:45,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:27:45,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:27:45,671 INFO L87 Difference]: Start difference. First operand 475 states and 678 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:46,379 INFO L93 Difference]: Finished difference Result 1314 states and 1896 transitions. [2024-11-24 01:27:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 01:27:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-24 01:27:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:46,383 INFO L225 Difference]: With dead ends: 1314 [2024-11-24 01:27:46,384 INFO L226 Difference]: Without dead ends: 906 [2024-11-24 01:27:46,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:27:46,386 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 540 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:46,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 710 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:27:46,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-11-24 01:27:46,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 475. [2024-11-24 01:27:46,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4291754756871036) internal successors, (676), 474 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 676 transitions. [2024-11-24 01:27:46,411 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 676 transitions. Word has length 53 [2024-11-24 01:27:46,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:46,411 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 676 transitions. [2024-11-24 01:27:46,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 676 transitions. [2024-11-24 01:27:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 01:27:46,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:46,413 INFO L218 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] [2024-11-24 01:27:46,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:27:46,414 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:46,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1755644783, now seen corresponding path program 1 times [2024-11-24 01:27:46,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:46,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720000617] [2024-11-24 01:27:46,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:46,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:46,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:46,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:46,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720000617] [2024-11-24 01:27:46,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720000617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:46,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:46,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:27:46,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341041475] [2024-11-24 01:27:46,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:46,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:27:46,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:46,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:27:46,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:27:46,800 INFO L87 Difference]: Start difference. First operand 475 states and 676 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:47,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:47,318 INFO L93 Difference]: Finished difference Result 1299 states and 1870 transitions. [2024-11-24 01:27:47,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 01:27:47,319 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-11-24 01:27:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:47,322 INFO L225 Difference]: With dead ends: 1299 [2024-11-24 01:27:47,322 INFO L226 Difference]: Without dead ends: 901 [2024-11-24 01:27:47,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:27:47,324 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 701 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:47,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 403 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:27:47,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2024-11-24 01:27:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 475. [2024-11-24 01:27:47,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4207188160676534) internal successors, (672), 474 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:47,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 672 transitions. [2024-11-24 01:27:47,341 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 672 transitions. Word has length 54 [2024-11-24 01:27:47,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:47,342 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 672 transitions. [2024-11-24 01:27:47,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:47,342 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 672 transitions. [2024-11-24 01:27:47,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 01:27:47,343 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:47,343 INFO L218 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] [2024-11-24 01:27:47,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:27:47,343 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:47,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:47,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1521991144, now seen corresponding path program 1 times [2024-11-24 01:27:47,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:47,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945688959] [2024-11-24 01:27:47,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:47,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:48,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:48,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945688959] [2024-11-24 01:27:48,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945688959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:48,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:48,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-24 01:27:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668569257] [2024-11-24 01:27:48,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:48,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 01:27:48,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:48,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 01:27:48,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:27:48,823 INFO L87 Difference]: Start difference. First operand 475 states and 672 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:51,604 INFO L93 Difference]: Finished difference Result 1869 states and 2702 transitions. [2024-11-24 01:27:51,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 01:27:51,605 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-11-24 01:27:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:51,611 INFO L225 Difference]: With dead ends: 1869 [2024-11-24 01:27:51,611 INFO L226 Difference]: Without dead ends: 1688 [2024-11-24 01:27:51,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=288, Invalid=1272, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:27:51,613 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 650 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:51,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 2808 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 01:27:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2024-11-24 01:27:51,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 485. [2024-11-24 01:27:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 483 states have (on average 1.4161490683229814) internal successors, (684), 484 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) [2024-11-24 01:27:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 684 transitions. [2024-11-24 01:27:51,639 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 684 transitions. Word has length 55 [2024-11-24 01:27:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:51,639 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 684 transitions. [2024-11-24 01:27:51,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 684 transitions. [2024-11-24 01:27:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 01:27:51,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:51,640 INFO L218 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] [2024-11-24 01:27:51,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:27:51,641 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:51,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash 822613335, now seen corresponding path program 1 times [2024-11-24 01:27:51,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:51,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590013811] [2024-11-24 01:27:51,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:51,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:52,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:52,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590013811] [2024-11-24 01:27:52,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590013811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:52,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:52,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-24 01:27:52,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207116648] [2024-11-24 01:27:52,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:52,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 01:27:52,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:52,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 01:27:52,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:27:52,949 INFO L87 Difference]: Start difference. First operand 485 states and 684 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:55,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:55,026 INFO L93 Difference]: Finished difference Result 1868 states and 2699 transitions. [2024-11-24 01:27:55,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 01:27:55,027 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-11-24 01:27:55,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:55,033 INFO L225 Difference]: With dead ends: 1868 [2024-11-24 01:27:55,033 INFO L226 Difference]: Without dead ends: 1693 [2024-11-24 01:27:55,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 01:27:55,035 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 867 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:55,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2605 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:27:55,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2024-11-24 01:27:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 490. [2024-11-24 01:27:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 488 states have (on average 1.4139344262295082) internal successors, (690), 489 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 690 transitions. [2024-11-24 01:27:55,069 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 690 transitions. Word has length 55 [2024-11-24 01:27:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:55,069 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 690 transitions. [2024-11-24 01:27:55,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 690 transitions. [2024-11-24 01:27:55,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 01:27:55,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:55,070 INFO L218 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] [2024-11-24 01:27:55,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:27:55,070 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:55,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:55,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1171871732, now seen corresponding path program 1 times [2024-11-24 01:27:55,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:55,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476755584] [2024-11-24 01:27:55,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:55,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:55,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476755584] [2024-11-24 01:27:55,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476755584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:55,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:55,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 01:27:55,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442267612] [2024-11-24 01:27:55,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:55,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:27:55,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:55,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:27:55,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:27:55,805 INFO L87 Difference]: Start difference. First operand 490 states and 690 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:56,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:56,746 INFO L93 Difference]: Finished difference Result 1056 states and 1518 transitions. [2024-11-24 01:27:56,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:27:56,746 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-11-24 01:27:56,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:56,750 INFO L225 Difference]: With dead ends: 1056 [2024-11-24 01:27:56,750 INFO L226 Difference]: Without dead ends: 860 [2024-11-24 01:27:56,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:27:56,751 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 615 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:56,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1079 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:27:56,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2024-11-24 01:27:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 468. [2024-11-24 01:27:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 466 states have (on average 1.4163090128755365) internal successors, (660), 467 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 660 transitions. [2024-11-24 01:27:56,769 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 660 transitions. Word has length 55 [2024-11-24 01:27:56,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:56,769 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 660 transitions. [2024-11-24 01:27:56,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:56,770 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 660 transitions. [2024-11-24 01:27:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 01:27:56,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:56,770 INFO L218 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] [2024-11-24 01:27:56,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:27:56,771 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:56,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:56,771 INFO L85 PathProgramCache]: Analyzing trace with hash 380290649, now seen corresponding path program 1 times [2024-11-24 01:27:56,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:56,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782609453] [2024-11-24 01:27:56,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:56,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:57,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:57,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782609453] [2024-11-24 01:27:57,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782609453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:57,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:57,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 01:27:57,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943276622] [2024-11-24 01:27:57,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:57,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:27:57,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:57,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:27:57,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:27:57,516 INFO L87 Difference]: Start difference. First operand 468 states and 660 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:58,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:58,430 INFO L93 Difference]: Finished difference Result 1783 states and 2593 transitions. [2024-11-24 01:27:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 01:27:58,431 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-11-24 01:27:58,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:58,436 INFO L225 Difference]: With dead ends: 1783 [2024-11-24 01:27:58,437 INFO L226 Difference]: Without dead ends: 1592 [2024-11-24 01:27:58,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:27:58,439 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 408 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:58,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 1636 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:27:58,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2024-11-24 01:27:58,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 446. [2024-11-24 01:27:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 1.4211711711711712) internal successors, (631), 445 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 631 transitions. [2024-11-24 01:27:58,462 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 631 transitions. Word has length 55 [2024-11-24 01:27:58,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:58,462 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 631 transitions. [2024-11-24 01:27:58,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:58,463 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 631 transitions. [2024-11-24 01:27:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 01:27:58,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:58,463 INFO L218 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] [2024-11-24 01:27:58,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:27:58,464 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:58,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:58,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1258334466, now seen corresponding path program 1 times [2024-11-24 01:27:58,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:58,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056566994] [2024-11-24 01:27:58,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:58,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:59,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:59,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056566994] [2024-11-24 01:27:59,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056566994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:59,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:59,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 01:27:59,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003449083] [2024-11-24 01:27:59,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:59,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:27:59,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:59,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:27:59,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:27:59,119 INFO L87 Difference]: Start difference. First operand 446 states and 631 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:59,717 INFO L93 Difference]: Finished difference Result 994 states and 1440 transitions. [2024-11-24 01:27:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:27:59,720 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-24 01:27:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:59,722 INFO L225 Difference]: With dead ends: 994 [2024-11-24 01:27:59,723 INFO L226 Difference]: Without dead ends: 819 [2024-11-24 01:27:59,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:27:59,725 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 309 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:59,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 975 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:27:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-24 01:27:59,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 428. [2024-11-24 01:27:59,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.4285714285714286) internal successors, (610), 427 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 610 transitions. [2024-11-24 01:27:59,739 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 610 transitions. Word has length 56 [2024-11-24 01:27:59,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:59,740 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 610 transitions. [2024-11-24 01:27:59,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 610 transitions. [2024-11-24 01:27:59,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-24 01:27:59,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:59,740 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:27:59,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:27:59,741 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:59,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:59,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1531780676, now seen corresponding path program 1 times [2024-11-24 01:27:59,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:59,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581279909] [2024-11-24 01:27:59,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:59,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581279909] [2024-11-24 01:27:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581279909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:59,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:59,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:27:59,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323116749] [2024-11-24 01:27:59,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:59,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:27:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:59,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:27:59,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:27:59,810 INFO L87 Difference]: Start difference. First operand 428 states and 610 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) [2024-11-24 01:27:59,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:59,842 INFO L93 Difference]: Finished difference Result 1112 states and 1613 transitions. [2024-11-24 01:27:59,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:27:59,843 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 [2024-11-24 01:27:59,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:59,845 INFO L225 Difference]: With dead ends: 1112 [2024-11-24 01:27:59,845 INFO L226 Difference]: Without dead ends: 741 [2024-11-24 01:27:59,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:27:59,847 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 70 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:59,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 189 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:27:59,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-24 01:27:59,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 730. [2024-11-24 01:27:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 1.412894375857339) internal successors, (1030), 729 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:27:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1030 transitions. [2024-11-24 01:27:59,866 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1030 transitions. Word has length 75 [2024-11-24 01:27:59,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:59,866 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 1030 transitions. [2024-11-24 01:27:59,867 INFO L472 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) [2024-11-24 01:27:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1030 transitions. [2024-11-24 01:27:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 01:27:59,870 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:59,870 INFO L218 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] [2024-11-24 01:27:59,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:27:59,870 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:59,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:59,871 INFO L85 PathProgramCache]: Analyzing trace with hash 241252331, now seen corresponding path program 1 times [2024-11-24 01:27:59,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:59,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595725557] [2024-11-24 01:27:59,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:59,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:27:59,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595725557] [2024-11-24 01:27:59,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595725557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:59,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:59,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:27:59,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293352103] [2024-11-24 01:27:59,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:59,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:27:59,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:59,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:27:59,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:27:59,975 INFO L87 Difference]: Start difference. First operand 730 states and 1030 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) [2024-11-24 01:28:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:00,000 INFO L93 Difference]: Finished difference Result 2004 states and 2844 transitions. [2024-11-24 01:28:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:28:00,001 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 [2024-11-24 01:28:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:00,005 INFO L225 Difference]: With dead ends: 2004 [2024-11-24 01:28:00,005 INFO L226 Difference]: Without dead ends: 1331 [2024-11-24 01:28:00,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:28:00,006 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 51 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 257 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 [2024-11-24 01:28:00,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 257 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:28:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2024-11-24 01:28:00,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1257. [2024-11-24 01:28:00,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1256 states have (on average 1.4052547770700636) internal successors, (1765), 1256 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:00,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1765 transitions. [2024-11-24 01:28:00,034 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1765 transitions. Word has length 76 [2024-11-24 01:28:00,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:00,035 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1765 transitions. [2024-11-24 01:28:00,035 INFO L472 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) [2024-11-24 01:28:00,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1765 transitions. [2024-11-24 01:28:00,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:28:00,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:00,038 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:00,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:28:00,038 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:00,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:00,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1306565925, now seen corresponding path program 1 times [2024-11-24 01:28:00,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:00,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913260777] [2024-11-24 01:28:00,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:00,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:28:00,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:00,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913260777] [2024-11-24 01:28:00,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913260777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:00,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:00,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:28:00,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738810767] [2024-11-24 01:28:00,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:00,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:28:00,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:00,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:28:00,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:28:00,155 INFO L87 Difference]: Start difference. First operand 1257 states and 1765 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) [2024-11-24 01:28:00,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:00,202 INFO L93 Difference]: Finished difference Result 3513 states and 4923 transitions. [2024-11-24 01:28:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:28:00,204 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 [2024-11-24 01:28:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:00,210 INFO L225 Difference]: With dead ends: 3513 [2024-11-24 01:28:00,211 INFO L226 Difference]: Without dead ends: 2313 [2024-11-24 01:28:00,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:28:00,212 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 44 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 255 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 [2024-11-24 01:28:00,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 255 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:28:00,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2024-11-24 01:28:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2167. [2024-11-24 01:28:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2166 states have (on average 1.3855032317636196) internal successors, (3001), 2166 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3001 transitions. [2024-11-24 01:28:00,260 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3001 transitions. Word has length 77 [2024-11-24 01:28:00,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:00,260 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 3001 transitions. [2024-11-24 01:28:00,260 INFO L472 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) [2024-11-24 01:28:00,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3001 transitions. [2024-11-24 01:28:00,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-24 01:28:00,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:00,261 INFO L218 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] [2024-11-24 01:28:00,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:28:00,262 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:00,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:00,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1695604898, now seen corresponding path program 1 times [2024-11-24 01:28:00,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:00,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500025010] [2024-11-24 01:28:00,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:00,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:28:00,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:00,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500025010] [2024-11-24 01:28:00,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500025010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:00,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:00,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:28:00,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686136959] [2024-11-24 01:28:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:00,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:28:00,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:00,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:28:00,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:28:00,532 INFO L87 Difference]: Start difference. First operand 2167 states and 3001 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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) [2024-11-24 01:28:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:00,569 INFO L93 Difference]: Finished difference Result 2265 states and 3130 transitions. [2024-11-24 01:28:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:28:00,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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 [2024-11-24 01:28:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:00,576 INFO L225 Difference]: With dead ends: 2265 [2024-11-24 01:28:00,576 INFO L226 Difference]: Without dead ends: 2263 [2024-11-24 01:28:00,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:28:00,578 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:00,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:28:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2024-11-24 01:28:00,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2024-11-24 01:28:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 1.3603006189213085) internal successors, (3077), 2262 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3077 transitions. [2024-11-24 01:28:00,651 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3077 transitions. Word has length 78 [2024-11-24 01:28:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:00,652 INFO L471 AbstractCegarLoop]: Abstraction has 2263 states and 3077 transitions. [2024-11-24 01:28:00,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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) [2024-11-24 01:28:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3077 transitions. [2024-11-24 01:28:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-24 01:28:00,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:00,653 INFO L218 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] [2024-11-24 01:28:00,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:28:00,653 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:00,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:00,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1415916470, now seen corresponding path program 1 times [2024-11-24 01:28:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:00,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273378025] [2024-11-24 01:28:00,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:28:00,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:00,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273378025] [2024-11-24 01:28:00,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273378025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:00,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:00,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:28:00,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569715504] [2024-11-24 01:28:00,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:00,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:28:00,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:00,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:28:00,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:28:00,772 INFO L87 Difference]: Start difference. First operand 2263 states and 3077 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:00,805 INFO L93 Difference]: Finished difference Result 5883 states and 7991 transitions. [2024-11-24 01:28:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:28:00,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-24 01:28:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:00,817 INFO L225 Difference]: With dead ends: 5883 [2024-11-24 01:28:00,817 INFO L226 Difference]: Without dead ends: 3677 [2024-11-24 01:28:00,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:28:00,821 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 55 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 261 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 [2024-11-24 01:28:00,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 261 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:28:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2024-11-24 01:28:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3387. [2024-11-24 01:28:00,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 3386 states have (on average 1.3411104548139396) internal successors, (4541), 3386 states have internal predecessors, (4541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 4541 transitions. [2024-11-24 01:28:00,897 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 4541 transitions. Word has length 79 [2024-11-24 01:28:00,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:00,898 INFO L471 AbstractCegarLoop]: Abstraction has 3387 states and 4541 transitions. [2024-11-24 01:28:00,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 4541 transitions. [2024-11-24 01:28:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-24 01:28:00,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:00,901 INFO L218 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] [2024-11-24 01:28:00,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:28:00,901 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:00,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:00,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1940322908, now seen corresponding path program 1 times [2024-11-24 01:28:00,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:00,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173990989] [2024-11-24 01:28:00,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:00,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:28:01,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:01,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173990989] [2024-11-24 01:28:01,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173990989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:01,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:01,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:28:01,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786471095] [2024-11-24 01:28:01,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:01,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:28:01,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:01,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:28:01,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:28:01,013 INFO L87 Difference]: Start difference. First operand 3387 states and 4541 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:01,046 INFO L93 Difference]: Finished difference Result 6719 states and 9023 transitions. [2024-11-24 01:28:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:28:01,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2024-11-24 01:28:01,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:01,090 INFO L225 Difference]: With dead ends: 6719 [2024-11-24 01:28:01,090 INFO L226 Difference]: Without dead ends: 3389 [2024-11-24 01:28:01,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:28:01,098 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 57 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:01,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 233 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:28:01,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2024-11-24 01:28:01,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3387. [2024-11-24 01:28:01,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 3386 states have (on average 1.3198464264619019) internal successors, (4469), 3386 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 4469 transitions. [2024-11-24 01:28:01,181 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 4469 transitions. Word has length 100 [2024-11-24 01:28:01,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:01,182 INFO L471 AbstractCegarLoop]: Abstraction has 3387 states and 4469 transitions. [2024-11-24 01:28:01,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:01,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 4469 transitions. [2024-11-24 01:28:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-24 01:28:01,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:01,184 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:28:01,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 01:28:01,184 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:01,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:01,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1124551470, now seen corresponding path program 1 times [2024-11-24 01:28:01,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:01,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432826261] [2024-11-24 01:28:01,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:01,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:28:01,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:01,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432826261] [2024-11-24 01:28:01,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432826261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:28:01,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253671980] [2024-11-24 01:28:01,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:01,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:28:01,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:28:01,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:28:01,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:28:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:02,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 01:28:02,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:28:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:28:03,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:28:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:28:05,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253671980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:28:05,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:28:05,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2024-11-24 01:28:05,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27742011] [2024-11-24 01:28:05,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:28:05,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-24 01:28:05,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:05,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-24 01:28:05,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2024-11-24 01:28:05,176 INFO L87 Difference]: Start difference. First operand 3387 states and 4469 transitions. Second operand has 30 states, 30 states have (on average 9.2) internal successors, (276), 29 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:15,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:15,562 INFO L93 Difference]: Finished difference Result 31695 states and 41984 transitions. [2024-11-24 01:28:15,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-24 01:28:15,563 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.2) internal successors, (276), 29 states have internal predecessors, (276), 0 states have call successors, (0), 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 100 [2024-11-24 01:28:15,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:15,627 INFO L225 Difference]: With dead ends: 31695 [2024-11-24 01:28:15,627 INFO L226 Difference]: Without dead ends: 28365 [2024-11-24 01:28:15,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7291 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=3118, Invalid=19834, Unknown=0, NotChecked=0, Total=22952 [2024-11-24 01:28:15,642 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 3640 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3640 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:15,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3640 Valid, 1661 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-24 01:28:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28365 states. [2024-11-24 01:28:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28365 to 19493. [2024-11-24 01:28:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19493 states, 19492 states have (on average 1.317463574799918) internal successors, (25680), 19492 states have internal predecessors, (25680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:16,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19493 states to 19493 states and 25680 transitions. [2024-11-24 01:28:16,168 INFO L78 Accepts]: Start accepts. Automaton has 19493 states and 25680 transitions. Word has length 100 [2024-11-24 01:28:16,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:16,168 INFO L471 AbstractCegarLoop]: Abstraction has 19493 states and 25680 transitions. [2024-11-24 01:28:16,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.2) internal successors, (276), 29 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:28:16,169 INFO L276 IsEmpty]: Start isEmpty. Operand 19493 states and 25680 transitions. [2024-11-24 01:28:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 01:28:16,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:16,174 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:28:16,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:28:16,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-24 01:28:16,375 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:16,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:16,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1543942337, now seen corresponding path program 1 times [2024-11-24 01:28:16,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:16,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371167087] [2024-11-24 01:28:16,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:16,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:17,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:28:17,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:17,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371167087] [2024-11-24 01:28:17,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371167087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:28:17,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343746225] [2024-11-24 01:28:17,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:17,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:28:17,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:28:17,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:28:17,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:28:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:17,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-24 01:28:17,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:28:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:28:18,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:28:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:28:22,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343746225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:28:22,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:28:22,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 43 [2024-11-24 01:28:22,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753988599] [2024-11-24 01:28:22,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:28:22,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-24 01:28:22,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:22,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-24 01:28:22,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1679, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 01:28:22,692 INFO L87 Difference]: Start difference. First operand 19493 states and 25680 transitions. Second operand has 43 states, 43 states have (on average 6.348837209302325) internal successors, (273), 43 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:17,589 INFO L93 Difference]: Finished difference Result 171717 states and 225105 transitions. [2024-11-24 01:29:17,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2024-11-24 01:29:17,590 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.348837209302325) internal successors, (273), 43 states have internal predecessors, (273), 0 states have call successors, (0), 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 101 [2024-11-24 01:29:17,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:17,958 INFO L225 Difference]: With dead ends: 171717 [2024-11-24 01:29:17,958 INFO L226 Difference]: Without dead ends: 152319 [2024-11-24 01:29:18,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44521 ImplicationChecksByTransitivity, 48.6s TimeCoverageRelationStatistics Valid=10537, Invalid=104723, Unknown=0, NotChecked=0, Total=115260 [2024-11-24 01:29:18,017 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 8169 mSDsluCounter, 3656 mSDsCounter, 0 mSdLazyCounter, 6646 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8169 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 6908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 6646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:18,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8169 Valid, 3812 Invalid, 6908 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [262 Valid, 6646 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-24 01:29:18,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152319 states. [2024-11-24 01:29:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152319 to 103759. [2024-11-24 01:29:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103759 states, 103758 states have (on average 1.3041211280094065) internal successors, (135313), 103758 states have internal predecessors, (135313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103759 states to 103759 states and 135313 transitions. [2024-11-24 01:29:20,008 INFO L78 Accepts]: Start accepts. Automaton has 103759 states and 135313 transitions. Word has length 101 [2024-11-24 01:29:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:20,008 INFO L471 AbstractCegarLoop]: Abstraction has 103759 states and 135313 transitions. [2024-11-24 01:29:20,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.348837209302325) internal successors, (273), 43 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 103759 states and 135313 transitions. [2024-11-24 01:29:20,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 01:29:20,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:20,019 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:29:20,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:29:20,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:20,223 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:20,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:20,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1214363720, now seen corresponding path program 1 times [2024-11-24 01:29:20,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:20,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930542548] [2024-11-24 01:29:20,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:20,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:29:20,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:20,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930542548] [2024-11-24 01:29:20,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930542548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:29:20,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605597607] [2024-11-24 01:29:20,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:20,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:20,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:29:20,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:29:20,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:29:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:21,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 01:29:21,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:29:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:29:22,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:29:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:29:23,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605597607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:29:23,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:29:23,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 16] total 37 [2024-11-24 01:29:23,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127997114] [2024-11-24 01:29:23,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:29:23,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-24 01:29:23,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:23,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-24 01:29:23,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 01:29:23,774 INFO L87 Difference]: Start difference. First operand 103759 states and 135313 transitions. Second operand has 38 states, 38 states have (on average 7.657894736842105) internal successors, (291), 37 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:29,240 INFO L93 Difference]: Finished difference Result 312989 states and 409382 transitions. [2024-11-24 01:29:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-24 01:29:29,241 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.657894736842105) internal successors, (291), 37 states have internal predecessors, (291), 0 states have call successors, (0), 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 102 [2024-11-24 01:29:29,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:29,677 INFO L225 Difference]: With dead ends: 312989 [2024-11-24 01:29:29,677 INFO L226 Difference]: Without dead ends: 261813 [2024-11-24 01:29:30,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3191 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2082, Invalid=8630, Unknown=0, NotChecked=0, Total=10712 [2024-11-24 01:29:30,078 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 3087 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:30,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3087 Valid, 2480 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 01:29:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261813 states. [2024-11-24 01:29:32,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261813 to 113975. [2024-11-24 01:29:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113975 states, 113974 states have (on average 1.303762261568428) internal successors, (148595), 113974 states have internal predecessors, (148595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113975 states to 113975 states and 148595 transitions. [2024-11-24 01:29:32,694 INFO L78 Accepts]: Start accepts. Automaton has 113975 states and 148595 transitions. Word has length 102 [2024-11-24 01:29:32,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:32,694 INFO L471 AbstractCegarLoop]: Abstraction has 113975 states and 148595 transitions. [2024-11-24 01:29:32,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.657894736842105) internal successors, (291), 37 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 113975 states and 148595 transitions. [2024-11-24 01:29:32,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 01:29:32,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:32,714 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:29:32,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:29:32,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:32,918 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:32,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:32,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1562208191, now seen corresponding path program 1 times [2024-11-24 01:29:32,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:32,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758964382] [2024-11-24 01:29:32,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:32,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 01:29:33,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:33,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758964382] [2024-11-24 01:29:33,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758964382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:33,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:33,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:29:33,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827133772] [2024-11-24 01:29:33,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:33,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:29:33,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:33,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:29:33,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:29:33,850 INFO L87 Difference]: Start difference. First operand 113975 states and 148595 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:35,681 INFO L93 Difference]: Finished difference Result 152167 states and 198609 transitions. [2024-11-24 01:29:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:29:35,682 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 102 [2024-11-24 01:29:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:35,846 INFO L225 Difference]: With dead ends: 152167 [2024-11-24 01:29:35,846 INFO L226 Difference]: Without dead ends: 105293 [2024-11-24 01:29:35,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:29:35,898 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 677 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:35,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 3075 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:29:35,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105293 states. [2024-11-24 01:29:37,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105293 to 100668. [2024-11-24 01:29:37,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100668 states, 100667 states have (on average 1.3060685229519107) internal successors, (131478), 100667 states have internal predecessors, (131478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:37,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100668 states to 100668 states and 131478 transitions. [2024-11-24 01:29:37,332 INFO L78 Accepts]: Start accepts. Automaton has 100668 states and 131478 transitions. Word has length 102 [2024-11-24 01:29:37,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:37,333 INFO L471 AbstractCegarLoop]: Abstraction has 100668 states and 131478 transitions. [2024-11-24 01:29:37,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 100668 states and 131478 transitions. [2024-11-24 01:29:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 01:29:37,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:37,342 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:29:37,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 01:29:37,342 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:37,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:37,343 INFO L85 PathProgramCache]: Analyzing trace with hash 3259025, now seen corresponding path program 1 times [2024-11-24 01:29:37,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:37,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755299355] [2024-11-24 01:29:37,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:37,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:29:37,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:37,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755299355] [2024-11-24 01:29:37,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755299355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:29:37,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230451253] [2024-11-24 01:29:37,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:37,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:37,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:29:37,902 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:29:37,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:29:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:38,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 01:29:38,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:29:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:29:39,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:29:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:29:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230451253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:29:40,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:29:40,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 28 [2024-11-24 01:29:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563457958] [2024-11-24 01:29:40,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:29:40,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-24 01:29:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:40,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-24 01:29:40,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2024-11-24 01:29:40,305 INFO L87 Difference]: Start difference. First operand 100668 states and 131478 transitions. Second operand has 29 states, 29 states have (on average 8.620689655172415) internal successors, (250), 28 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:43,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:43,338 INFO L93 Difference]: Finished difference Result 197677 states and 257672 transitions. [2024-11-24 01:29:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-24 01:29:43,339 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.620689655172415) internal successors, (250), 28 states have internal predecessors, (250), 0 states have call successors, (0), 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 102 [2024-11-24 01:29:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:43,467 INFO L225 Difference]: With dead ends: 197677 [2024-11-24 01:29:43,467 INFO L226 Difference]: Without dead ends: 133105 [2024-11-24 01:29:43,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1115, Invalid=3715, Unknown=0, NotChecked=0, Total=4830 [2024-11-24 01:29:43,515 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 2576 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:43,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2576 Valid, 1789 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:29:43,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133105 states. [2024-11-24 01:29:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133105 to 107822. [2024-11-24 01:29:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107822 states, 107821 states have (on average 1.302306600754955) internal successors, (140416), 107821 states have internal predecessors, (140416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107822 states to 107822 states and 140416 transitions. [2024-11-24 01:29:45,762 INFO L78 Accepts]: Start accepts. Automaton has 107822 states and 140416 transitions. Word has length 102 [2024-11-24 01:29:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:45,763 INFO L471 AbstractCegarLoop]: Abstraction has 107822 states and 140416 transitions. [2024-11-24 01:29:45,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.620689655172415) internal successors, (250), 28 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 107822 states and 140416 transitions. [2024-11-24 01:29:45,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:29:45,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:45,768 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:29:45,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:29:45,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 01:29:45,969 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:45,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash 164603302, now seen corresponding path program 1 times [2024-11-24 01:29:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:45,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587733266] [2024-11-24 01:29:45,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:45,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 01:29:46,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:46,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587733266] [2024-11-24 01:29:46,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587733266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:46,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:46,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:29:46,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983187254] [2024-11-24 01:29:46,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:46,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:29:46,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:46,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:29:46,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:46,033 INFO L87 Difference]: Start difference. First operand 107822 states and 140416 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:46,833 INFO L93 Difference]: Finished difference Result 206518 states and 269989 transitions. [2024-11-24 01:29:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:29:46,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 103 [2024-11-24 01:29:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:47,173 INFO L225 Difference]: With dead ends: 206518 [2024-11-24 01:29:47,173 INFO L226 Difference]: Without dead ends: 98809 [2024-11-24 01:29:47,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:47,203 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 81 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:47,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 100 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:29:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98809 states. [2024-11-24 01:29:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98809 to 98809. [2024-11-24 01:29:48,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98809 states, 98808 states have (on average 1.295897093352765) internal successors, (128045), 98808 states have internal predecessors, (128045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98809 states to 98809 states and 128045 transitions. [2024-11-24 01:29:48,685 INFO L78 Accepts]: Start accepts. Automaton has 98809 states and 128045 transitions. Word has length 103 [2024-11-24 01:29:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:48,686 INFO L471 AbstractCegarLoop]: Abstraction has 98809 states and 128045 transitions. [2024-11-24 01:29:48,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:29:48,686 INFO L276 IsEmpty]: Start isEmpty. Operand 98809 states and 128045 transitions. [2024-11-24 01:29:48,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:29:48,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:48,696 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:29:48,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-24 01:29:48,697 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:48,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:48,697 INFO L85 PathProgramCache]: Analyzing trace with hash -742700557, now seen corresponding path program 1 times [2024-11-24 01:29:48,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:48,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236943535] [2024-11-24 01:29:48,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:48,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:29:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236943535] [2024-11-24 01:29:49,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236943535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:29:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534743842] [2024-11-24 01:29:49,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:49,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:49,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:29:49,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:29:49,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:29:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:50,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 01:29:50,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:29:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:29:51,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:29:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:29:52,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534743842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:29:52,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:29:52,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 13] total 45 [2024-11-24 01:29:52,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703107678] [2024-11-24 01:29:52,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:29:52,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-24 01:29:52,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:52,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-24 01:29:52,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1849, Unknown=0, NotChecked=0, Total=1980 [2024-11-24 01:29:52,576 INFO L87 Difference]: Start difference. First operand 98809 states and 128045 transitions. Second operand has 45 states, 45 states have (on average 6.311111111111111) internal successors, (284), 45 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:04,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:04,338 INFO L93 Difference]: Finished difference Result 281466 states and 365504 transitions. [2024-11-24 01:30:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-24 01:30:04,338 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.311111111111111) internal successors, (284), 45 states have internal predecessors, (284), 0 states have call successors, (0), 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 103 [2024-11-24 01:30:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:04,556 INFO L225 Difference]: With dead ends: 281466 [2024-11-24 01:30:04,556 INFO L226 Difference]: Without dead ends: 216334 [2024-11-24 01:30:04,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6118 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=2910, Invalid=20346, Unknown=0, NotChecked=0, Total=23256 [2024-11-24 01:30:04,596 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 4758 mSDsluCounter, 7250 mSDsCounter, 0 mSdLazyCounter, 4498 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 7524 SdHoareTripleChecker+Invalid, 4540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:30:04,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4758 Valid, 7524 Invalid, 4540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 4498 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-24 01:30:04,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216334 states. [2024-11-24 01:30:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216334 to 155845. [2024-11-24 01:30:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155845 states, 155844 states have (on average 1.2982790482790483) internal successors, (202329), 155844 states have internal predecessors, (202329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155845 states to 155845 states and 202329 transitions. [2024-11-24 01:30:06,746 INFO L78 Accepts]: Start accepts. Automaton has 155845 states and 202329 transitions. Word has length 103 [2024-11-24 01:30:06,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:06,746 INFO L471 AbstractCegarLoop]: Abstraction has 155845 states and 202329 transitions. [2024-11-24 01:30:06,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.311111111111111) internal successors, (284), 45 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:06,746 INFO L276 IsEmpty]: Start isEmpty. Operand 155845 states and 202329 transitions. [2024-11-24 01:30:06,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:30:06,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:06,756 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:30:06,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:30:06,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 01:30:06,956 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:06,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash 520064885, now seen corresponding path program 1 times [2024-11-24 01:30:06,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:30:06,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799205679] [2024-11-24 01:30:06,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:30:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:08,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:30:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799205679] [2024-11-24 01:30:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799205679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:30:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878646434] [2024-11-24 01:30:08,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:08,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:08,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:08,388 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:30:08,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:30:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:08,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-24 01:30:08,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:30:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:09,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:30:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:10,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878646434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:30:10,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:30:10,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 12] total 41 [2024-11-24 01:30:10,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876986330] [2024-11-24 01:30:10,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:30:10,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-24 01:30:10,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:30:10,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-24 01:30:10,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1516, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 01:30:10,752 INFO L87 Difference]: Start difference. First operand 155845 states and 202329 transitions. Second operand has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 41 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:21,267 INFO L93 Difference]: Finished difference Result 337121 states and 436048 transitions. [2024-11-24 01:30:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-24 01:30:21,267 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 41 states have internal predecessors, (283), 0 states have call successors, (0), 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 103 [2024-11-24 01:30:21,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:21,622 INFO L225 Difference]: With dead ends: 337121 [2024-11-24 01:30:21,622 INFO L226 Difference]: Without dead ends: 282068 [2024-11-24 01:30:21,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5507 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2624, Invalid=17968, Unknown=0, NotChecked=0, Total=20592 [2024-11-24 01:30:21,686 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 2371 mSDsluCounter, 7995 mSDsCounter, 0 mSdLazyCounter, 4652 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2371 SdHoareTripleChecker+Valid, 8308 SdHoareTripleChecker+Invalid, 4676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:30:21,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2371 Valid, 8308 Invalid, 4676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4652 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-24 01:30:21,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282068 states. [2024-11-24 01:30:24,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282068 to 254081. [2024-11-24 01:30:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254081 states, 254080 states have (on average 1.296878935768262) internal successors, (329511), 254080 states have internal predecessors, (329511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254081 states to 254081 states and 329511 transitions. [2024-11-24 01:30:25,024 INFO L78 Accepts]: Start accepts. Automaton has 254081 states and 329511 transitions. Word has length 103 [2024-11-24 01:30:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:25,024 INFO L471 AbstractCegarLoop]: Abstraction has 254081 states and 329511 transitions. [2024-11-24 01:30:25,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 41 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 254081 states and 329511 transitions. [2024-11-24 01:30:25,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:30:25,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:25,032 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:30:25,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:30:25,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:25,232 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:25,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1974632121, now seen corresponding path program 1 times [2024-11-24 01:30:25,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:30:25,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290154341] [2024-11-24 01:30:25,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:25,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:30:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:25,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:30:25,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290154341] [2024-11-24 01:30:25,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290154341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:30:25,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:30:25,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:30:25,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963668233] [2024-11-24 01:30:25,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:30:25,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:30:25,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:30:25,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:30:25,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:30:25,321 INFO L87 Difference]: Start difference. First operand 254081 states and 329511 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:26,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:26,942 INFO L93 Difference]: Finished difference Result 368454 states and 474798 transitions. [2024-11-24 01:30:26,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:30:26,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-24 01:30:26,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:27,222 INFO L225 Difference]: With dead ends: 368454 [2024-11-24 01:30:27,223 INFO L226 Difference]: Without dead ends: 114486 [2024-11-24 01:30:27,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:30:27,329 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 54 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:30:27,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 209 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:30:27,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114486 states. [2024-11-24 01:30:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114486 to 111763. [2024-11-24 01:30:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111763 states, 111762 states have (on average 1.2534761367906802) internal successors, (140091), 111762 states have internal predecessors, (140091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111763 states to 111763 states and 140091 transitions. [2024-11-24 01:30:29,563 INFO L78 Accepts]: Start accepts. Automaton has 111763 states and 140091 transitions. Word has length 103 [2024-11-24 01:30:29,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:29,564 INFO L471 AbstractCegarLoop]: Abstraction has 111763 states and 140091 transitions. [2024-11-24 01:30:29,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand 111763 states and 140091 transitions. [2024-11-24 01:30:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:30:29,570 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:29,570 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:30:29,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-24 01:30:29,570 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:29,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:29,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1722847943, now seen corresponding path program 1 times [2024-11-24 01:30:29,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:30:29,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428414132] [2024-11-24 01:30:29,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:29,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:30:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:29,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:30:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428414132] [2024-11-24 01:30:29,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428414132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:30:29,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535005957] [2024-11-24 01:30:29,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:29,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:29,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:29,860 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:30:29,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:30:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:30,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 01:30:30,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:30:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:30:30,230 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:30:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:30:30,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535005957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:30:30,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:30:30,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 16 [2024-11-24 01:30:30,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143347728] [2024-11-24 01:30:30,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:30:30,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:30:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:30:30,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:30:30,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:30:30,492 INFO L87 Difference]: Start difference. First operand 111763 states and 140091 transitions. Second operand has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:32,419 INFO L93 Difference]: Finished difference Result 210547 states and 261493 transitions. [2024-11-24 01:30:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-24 01:30:32,420 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 0 states have call successors, (0), 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 103 [2024-11-24 01:30:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:32,509 INFO L225 Difference]: With dead ends: 210547 [2024-11-24 01:30:32,509 INFO L226 Difference]: Without dead ends: 98897 [2024-11-24 01:30:32,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=371, Invalid=1521, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 01:30:32,533 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 652 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:30:32,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 979 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:30:32,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98897 states. [2024-11-24 01:30:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98897 to 81694. [2024-11-24 01:30:33,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81694 states, 81693 states have (on average 1.250621228257011) internal successors, (102167), 81693 states have internal predecessors, (102167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81694 states to 81694 states and 102167 transitions. [2024-11-24 01:30:33,713 INFO L78 Accepts]: Start accepts. Automaton has 81694 states and 102167 transitions. Word has length 103 [2024-11-24 01:30:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:33,714 INFO L471 AbstractCegarLoop]: Abstraction has 81694 states and 102167 transitions. [2024-11-24 01:30:33,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 81694 states and 102167 transitions. [2024-11-24 01:30:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:30:33,719 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:33,719 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:30:33,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:30:33,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:33,921 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:33,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash 799396471, now seen corresponding path program 1 times [2024-11-24 01:30:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:30:33,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875726012] [2024-11-24 01:30:33,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:30:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:35,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:30:35,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875726012] [2024-11-24 01:30:35,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875726012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:30:35,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265247671] [2024-11-24 01:30:35,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:35,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:35,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:35,307 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:30:35,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:30:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:35,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 01:30:35,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:30:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:38,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:30:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:41,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265247671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:30:41,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:30:41,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 18] total 54 [2024-11-24 01:30:41,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824640987] [2024-11-24 01:30:41,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:30:41,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-24 01:30:41,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:30:41,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-24 01:30:41,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2696, Unknown=0, NotChecked=0, Total=2862 [2024-11-24 01:30:41,735 INFO L87 Difference]: Start difference. First operand 81694 states and 102167 transitions. Second operand has 54 states, 54 states have (on average 5.296296296296297) internal successors, (286), 54 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:04,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:04,281 INFO L93 Difference]: Finished difference Result 128042 states and 159658 transitions. [2024-11-24 01:31:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2024-11-24 01:31:04,281 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.296296296296297) internal successors, (286), 54 states have internal predecessors, (286), 0 states have call successors, (0), 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 103 [2024-11-24 01:31:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:04,381 INFO L225 Difference]: With dead ends: 128042 [2024-11-24 01:31:04,381 INFO L226 Difference]: Without dead ends: 107070 [2024-11-24 01:31:04,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10431 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=3373, Invalid=34457, Unknown=0, NotChecked=0, Total=37830 [2024-11-24 01:31:04,408 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 2968 mSDsluCounter, 12567 mSDsCounter, 0 mSdLazyCounter, 7032 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2968 SdHoareTripleChecker+Valid, 12957 SdHoareTripleChecker+Invalid, 7055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 7032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:04,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2968 Valid, 12957 Invalid, 7055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 7032 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-24 01:31:04,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107070 states. [2024-11-24 01:31:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107070 to 83019. [2024-11-24 01:31:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83019 states, 83018 states have (on average 1.2499337493073792) internal successors, (103767), 83018 states have internal predecessors, (103767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83019 states to 83019 states and 103767 transitions. [2024-11-24 01:31:05,380 INFO L78 Accepts]: Start accepts. Automaton has 83019 states and 103767 transitions. Word has length 103 [2024-11-24 01:31:05,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:05,380 INFO L471 AbstractCegarLoop]: Abstraction has 83019 states and 103767 transitions. [2024-11-24 01:31:05,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.296296296296297) internal successors, (286), 54 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:05,380 INFO L276 IsEmpty]: Start isEmpty. Operand 83019 states and 103767 transitions. [2024-11-24 01:31:05,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 01:31:05,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:05,383 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:31:05,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 01:31:05,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:05,584 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:31:05,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:05,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1754393168, now seen corresponding path program 1 times [2024-11-24 01:31:05,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:31:05,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852364375] [2024-11-24 01:31:05,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:31:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:06,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:31:06,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852364375] [2024-11-24 01:31:06,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852364375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:31:06,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249474024] [2024-11-24 01:31:06,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:06,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:06,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:06,342 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:06,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:31:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:06,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 01:31:06,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:09,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:31:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:12,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249474024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:31:12,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:31:12,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 19] total 54 [2024-11-24 01:31:12,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577318147] [2024-11-24 01:31:12,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:31:12,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-24 01:31:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:31:12,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-24 01:31:12,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2554, Unknown=0, NotChecked=0, Total=2862 [2024-11-24 01:31:12,064 INFO L87 Difference]: Start difference. First operand 83019 states and 103767 transitions. Second operand has 54 states, 54 states have (on average 4.981481481481482) internal successors, (269), 54 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:19,545 INFO L93 Difference]: Finished difference Result 123956 states and 155448 transitions. [2024-11-24 01:31:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-24 01:31:19,545 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.981481481481482) internal successors, (269), 54 states have internal predecessors, (269), 0 states have call successors, (0), 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 104 [2024-11-24 01:31:19,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:19,623 INFO L225 Difference]: With dead ends: 123956 [2024-11-24 01:31:19,624 INFO L226 Difference]: Without dead ends: 88706 [2024-11-24 01:31:19,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3973 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1813, Invalid=11993, Unknown=0, NotChecked=0, Total=13806 [2024-11-24 01:31:19,651 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 2792 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2792 SdHoareTripleChecker+Valid, 4596 SdHoareTripleChecker+Invalid, 2484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:19,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2792 Valid, 4596 Invalid, 2484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 01:31:19,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88706 states. [2024-11-24 01:31:20,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88706 to 57126. [2024-11-24 01:31:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57126 states, 57125 states have (on average 1.2474923413566739) internal successors, (71263), 57125 states have internal predecessors, (71263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57126 states to 57126 states and 71263 transitions. [2024-11-24 01:31:20,490 INFO L78 Accepts]: Start accepts. Automaton has 57126 states and 71263 transitions. Word has length 104 [2024-11-24 01:31:20,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:20,490 INFO L471 AbstractCegarLoop]: Abstraction has 57126 states and 71263 transitions. [2024-11-24 01:31:20,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.981481481481482) internal successors, (269), 54 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:20,491 INFO L276 IsEmpty]: Start isEmpty. Operand 57126 states and 71263 transitions. [2024-11-24 01:31:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 01:31:20,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:20,493 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:31:20,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:31:20,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:20,694 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:31:20,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:20,694 INFO L85 PathProgramCache]: Analyzing trace with hash 174975633, now seen corresponding path program 1 times [2024-11-24 01:31:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:31:20,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765075112] [2024-11-24 01:31:20,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:20,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:31:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:31:20,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:31:20,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765075112] [2024-11-24 01:31:20,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765075112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:20,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:20,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:31:20,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302194857] [2024-11-24 01:31:20,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:20,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:31:20,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:31:20,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:31:20,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:31:20,729 INFO L87 Difference]: Start difference. First operand 57126 states and 71263 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:20,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:20,913 INFO L93 Difference]: Finished difference Result 95753 states and 119845 transitions. [2024-11-24 01:31:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:31:20,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 105 [2024-11-24 01:31:20,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:20,946 INFO L225 Difference]: With dead ends: 95753 [2024-11-24 01:31:20,946 INFO L226 Difference]: Without dead ends: 39396 [2024-11-24 01:31:20,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:31:20,968 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 80 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:20,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 116 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:31:20,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39396 states. [2024-11-24 01:31:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39396 to 39396. [2024-11-24 01:31:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39396 states, 39395 states have (on average 1.2333037187460338) internal successors, (48586), 39395 states have internal predecessors, (48586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39396 states to 39396 states and 48586 transitions. [2024-11-24 01:31:21,285 INFO L78 Accepts]: Start accepts. Automaton has 39396 states and 48586 transitions. Word has length 105 [2024-11-24 01:31:21,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:21,285 INFO L471 AbstractCegarLoop]: Abstraction has 39396 states and 48586 transitions. [2024-11-24 01:31:21,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 39396 states and 48586 transitions. [2024-11-24 01:31:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 01:31:21,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:21,287 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:31:21,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-24 01:31:21,287 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:31:21,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:21,287 INFO L85 PathProgramCache]: Analyzing trace with hash 7289595, now seen corresponding path program 1 times [2024-11-24 01:31:21,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:31:21,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680186181] [2024-11-24 01:31:21,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:21,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:31:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 01:31:21,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:31:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680186181] [2024-11-24 01:31:21,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680186181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:21,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:21,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:31:21,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354047970] [2024-11-24 01:31:21,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:21,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:31:21,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:31:21,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:31:21,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:31:21,327 INFO L87 Difference]: Start difference. First operand 39396 states and 48586 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:21,644 INFO L93 Difference]: Finished difference Result 69235 states and 85725 transitions. [2024-11-24 01:31:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:31:21,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 105 [2024-11-24 01:31:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:21,681 INFO L225 Difference]: With dead ends: 69235 [2024-11-24 01:31:21,681 INFO L226 Difference]: Without dead ends: 30229 [2024-11-24 01:31:21,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:31:21,699 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 75 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:21,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 124 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:31:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30229 states. [2024-11-24 01:31:21,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30229 to 30229. [2024-11-24 01:31:21,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30229 states, 30228 states have (on average 1.219730051607781) internal successors, (36870), 30228 states have internal predecessors, (36870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:21,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30229 states to 30229 states and 36870 transitions. [2024-11-24 01:31:21,980 INFO L78 Accepts]: Start accepts. Automaton has 30229 states and 36870 transitions. Word has length 105 [2024-11-24 01:31:21,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:21,981 INFO L471 AbstractCegarLoop]: Abstraction has 30229 states and 36870 transitions. [2024-11-24 01:31:21,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:21,981 INFO L276 IsEmpty]: Start isEmpty. Operand 30229 states and 36870 transitions. [2024-11-24 01:31:21,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 01:31:21,982 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:21,982 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:31:21,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-24 01:31:21,983 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:31:21,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:21,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1481271785, now seen corresponding path program 1 times [2024-11-24 01:31:21,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:31:21,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624449344] [2024-11-24 01:31:21,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:21,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:31:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:22,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:31:22,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624449344] [2024-11-24 01:31:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624449344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:31:22,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288063825] [2024-11-24 01:31:22,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:22,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:22,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:22,357 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:22,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:31:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:22,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 01:31:22,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:23,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:31:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288063825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:31:24,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:31:24,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 37 [2024-11-24 01:31:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878514419] [2024-11-24 01:31:24,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:31:24,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-24 01:31:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:31:24,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-24 01:31:24,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 01:31:24,770 INFO L87 Difference]: Start difference. First operand 30229 states and 36870 transitions. Second operand has 37 states, 37 states have (on average 7.054054054054054) internal successors, (261), 37 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:26,345 INFO L93 Difference]: Finished difference Result 45692 states and 55644 transitions. [2024-11-24 01:31:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-24 01:31:26,346 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.054054054054054) internal successors, (261), 37 states have internal predecessors, (261), 0 states have call successors, (0), 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 105 [2024-11-24 01:31:26,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:26,373 INFO L225 Difference]: With dead ends: 45692 [2024-11-24 01:31:26,373 INFO L226 Difference]: Without dead ends: 36489 [2024-11-24 01:31:26,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 185 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=543, Invalid=2879, Unknown=0, NotChecked=0, Total=3422 [2024-11-24 01:31:26,382 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 1038 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:26,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 3003 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:31:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36489 states. [2024-11-24 01:31:26,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36489 to 33199. [2024-11-24 01:31:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33199 states, 33198 states have (on average 1.2157660100006025) internal successors, (40361), 33198 states have internal predecessors, (40361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33199 states to 33199 states and 40361 transitions. [2024-11-24 01:31:26,816 INFO L78 Accepts]: Start accepts. Automaton has 33199 states and 40361 transitions. Word has length 105 [2024-11-24 01:31:26,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:26,816 INFO L471 AbstractCegarLoop]: Abstraction has 33199 states and 40361 transitions. [2024-11-24 01:31:26,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.054054054054054) internal successors, (261), 37 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:26,816 INFO L276 IsEmpty]: Start isEmpty. Operand 33199 states and 40361 transitions. [2024-11-24 01:31:26,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 01:31:26,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:26,817 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:31:26,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 01:31:27,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 01:31:27,018 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:31:27,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:27,019 INFO L85 PathProgramCache]: Analyzing trace with hash -331829943, now seen corresponding path program 1 times [2024-11-24 01:31:27,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:31:27,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656478236] [2024-11-24 01:31:27,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:27,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:31:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:28,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:31:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656478236] [2024-11-24 01:31:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656478236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:31:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743097736] [2024-11-24 01:31:28,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:28,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:28,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:28,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:28,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:31:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:28,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 01:31:28,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:29,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:31:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:30,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743097736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:31:30,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:31:30,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13, 12] total 47 [2024-11-24 01:31:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784347041] [2024-11-24 01:31:30,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:31:30,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-24 01:31:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:31:30,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-24 01:31:30,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2000, Unknown=0, NotChecked=0, Total=2162 [2024-11-24 01:31:30,691 INFO L87 Difference]: Start difference. First operand 33199 states and 40361 transitions. Second operand has 47 states, 47 states have (on average 5.957446808510638) internal successors, (280), 47 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:36,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:36,623 INFO L93 Difference]: Finished difference Result 41875 states and 51063 transitions. [2024-11-24 01:31:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-24 01:31:36,623 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.957446808510638) internal successors, (280), 47 states have internal predecessors, (280), 0 states have call successors, (0), 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 105 [2024-11-24 01:31:36,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:36,646 INFO L225 Difference]: With dead ends: 41875 [2024-11-24 01:31:36,646 INFO L226 Difference]: Without dead ends: 30045 [2024-11-24 01:31:36,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1961 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1047, Invalid=8655, Unknown=0, NotChecked=0, Total=9702 [2024-11-24 01:31:36,654 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 1565 mSDsluCounter, 7004 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 7281 SdHoareTripleChecker+Invalid, 4060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:36,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 7281 Invalid, 4060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 01:31:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30045 states. [2024-11-24 01:31:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30045 to 29728. [2024-11-24 01:31:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29728 states, 29727 states have (on average 1.214081474753591) internal successors, (36091), 29727 states have internal predecessors, (36091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29728 states to 29728 states and 36091 transitions. [2024-11-24 01:31:36,900 INFO L78 Accepts]: Start accepts. Automaton has 29728 states and 36091 transitions. Word has length 105 [2024-11-24 01:31:36,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:36,900 INFO L471 AbstractCegarLoop]: Abstraction has 29728 states and 36091 transitions. [2024-11-24 01:31:36,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.957446808510638) internal successors, (280), 47 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:36,900 INFO L276 IsEmpty]: Start isEmpty. Operand 29728 states and 36091 transitions. [2024-11-24 01:31:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 01:31:36,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:36,902 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:31:36,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:31:37,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 01:31:37,102 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:31:37,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:37,103 INFO L85 PathProgramCache]: Analyzing trace with hash 446625703, now seen corresponding path program 1 times [2024-11-24 01:31:37,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:31:37,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332511896] [2024-11-24 01:31:37,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:37,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:31:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:37,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:31:37,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332511896] [2024-11-24 01:31:37,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332511896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:31:37,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107680770] [2024-11-24 01:31:37,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:37,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:37,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:37,484 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:37,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:31:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:37,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 01:31:37,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:38,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:31:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:39,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107680770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:31:39,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:31:39,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 29 [2024-11-24 01:31:39,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70076969] [2024-11-24 01:31:39,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:31:39,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-24 01:31:39,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:31:39,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-24 01:31:39,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2024-11-24 01:31:39,060 INFO L87 Difference]: Start difference. First operand 29728 states and 36091 transitions. Second operand has 29 states, 29 states have (on average 8.862068965517242) internal successors, (257), 29 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:39,910 INFO L93 Difference]: Finished difference Result 34972 states and 42573 transitions. [2024-11-24 01:31:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:31:39,910 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.862068965517242) internal successors, (257), 29 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-24 01:31:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:39,930 INFO L225 Difference]: With dead ends: 34972 [2024-11-24 01:31:39,930 INFO L226 Difference]: Without dead ends: 25304 [2024-11-24 01:31:39,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=295, Invalid=1511, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 01:31:39,938 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 657 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:39,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 2946 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:31:39,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25304 states. [2024-11-24 01:31:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25304 to 25298. [2024-11-24 01:31:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25298 states, 25297 states have (on average 1.2127525002964779) internal successors, (30679), 25297 states have internal predecessors, (30679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25298 states to 25298 states and 30679 transitions. [2024-11-24 01:31:40,147 INFO L78 Accepts]: Start accepts. Automaton has 25298 states and 30679 transitions. Word has length 105 [2024-11-24 01:31:40,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:40,147 INFO L471 AbstractCegarLoop]: Abstraction has 25298 states and 30679 transitions. [2024-11-24 01:31:40,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.862068965517242) internal successors, (257), 29 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 25298 states and 30679 transitions. [2024-11-24 01:31:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 01:31:40,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:40,148 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:31:40,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-24 01:31:40,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 01:31:40,349 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:31:40,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:40,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1662683394, now seen corresponding path program 1 times [2024-11-24 01:31:40,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:31:40,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969783240] [2024-11-24 01:31:40,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:40,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:31:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:41,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:31:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969783240] [2024-11-24 01:31:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969783240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:31:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727360328] [2024-11-24 01:31:41,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:41,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:41,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:41,809 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:41,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:31:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:42,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-24 01:31:42,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:45,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:31:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:47,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727360328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:31:47,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:31:47,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 22] total 64 [2024-11-24 01:31:47,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727795697] [2024-11-24 01:31:47,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:31:47,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-24 01:31:47,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:31:47,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-24 01:31:47,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=3655, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 01:31:47,862 INFO L87 Difference]: Start difference. First operand 25298 states and 30679 transitions. Second operand has 64 states, 64 states have (on average 4.0) internal successors, (256), 64 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:56,940 INFO L93 Difference]: Finished difference Result 37699 states and 45813 transitions. [2024-11-24 01:31:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-24 01:31:56,941 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.0) internal successors, (256), 64 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-24 01:31:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:56,966 INFO L225 Difference]: With dead ends: 37699 [2024-11-24 01:31:56,966 INFO L226 Difference]: Without dead ends: 31920 [2024-11-24 01:31:56,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3248 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1808, Invalid=11532, Unknown=0, NotChecked=0, Total=13340 [2024-11-24 01:31:56,975 INFO L435 NwaCegarLoop]: 365 mSDtfsCounter, 2123 mSDsluCounter, 9504 mSDsCounter, 0 mSdLazyCounter, 5334 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 9869 SdHoareTripleChecker+Invalid, 5370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 5334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:56,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 9869 Invalid, 5370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 5334 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-24 01:31:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31920 states. [2024-11-24 01:31:57,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31920 to 25277. [2024-11-24 01:31:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25277 states, 25276 states have (on average 1.212850134514955) internal successors, (30656), 25276 states have internal predecessors, (30656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25277 states to 25277 states and 30656 transitions. [2024-11-24 01:31:57,214 INFO L78 Accepts]: Start accepts. Automaton has 25277 states and 30656 transitions. Word has length 106 [2024-11-24 01:31:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:57,214 INFO L471 AbstractCegarLoop]: Abstraction has 25277 states and 30656 transitions. [2024-11-24 01:31:57,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.0) internal successors, (256), 64 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 25277 states and 30656 transitions. [2024-11-24 01:31:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 01:31:57,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:57,215 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:31:57,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 01:31:57,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-24 01:31:57,416 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:31:57,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1118279012, now seen corresponding path program 1 times [2024-11-24 01:31:57,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:31:57,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079198523] [2024-11-24 01:31:57,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:57,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:31:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:58,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:31:58,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079198523] [2024-11-24 01:31:58,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079198523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:31:58,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351972196] [2024-11-24 01:31:58,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:58,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:58,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:58,971 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:58,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d531a2-c2ab-4a2d-8989-ec595aff1252/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:31:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:59,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-24 01:31:59,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:03,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:09,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351972196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:09,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:09,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30, 30] total 79 [2024-11-24 01:32:09,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049546465] [2024-11-24 01:32:09,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:09,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-24 01:32:09,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:09,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-24 01:32:09,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=5677, Unknown=0, NotChecked=0, Total=6162 [2024-11-24 01:32:09,201 INFO L87 Difference]: Start difference. First operand 25277 states and 30656 transitions. Second operand has 79 states, 79 states have (on average 3.392405063291139) internal successors, (268), 79 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)