./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB --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 8080e0a725fc4bb7ff7c553cf5cace8f3ab82ec5bf4c36129edf77f076dbcbd3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:50:32,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:50:32,542 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 19:50:32,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:50:32,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:50:32,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:50:32,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:50:32,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:50:32,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:50:32,616 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:50:32,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:50:32,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:50:32,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:50:32,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:50:32,617 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:50:32,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:50:32,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:50:32,617 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:50:32,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:50:32,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:50:32,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:50:32,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:50:32,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:50:32,622 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:50:32,622 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:50:32,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:50:32,622 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:50:32,622 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:50:32,623 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:50:32,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:32,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:32,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:32,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:32,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:50:32,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:32,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:32,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:32,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:32,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:50:32,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:50:32,624 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:50:32,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:50:32,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:50:32,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:50:32,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:50:32,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:50:32,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:50:32,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:50:32,625 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_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 8080e0a725fc4bb7ff7c553cf5cace8f3ab82ec5bf4c36129edf77f076dbcbd3 [2024-11-27 19:50:32,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:50:32,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:50:32,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:50:32,969 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:50:32,969 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:50:32,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 19:50:35,980 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/data/f20b04bb5/84b15bee355c4d1cb6a0269788ab54bc/FLAGbcf09ff5b [2024-11-27 19:50:36,345 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:50:36,346 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 19:50:36,363 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/data/f20b04bb5/84b15bee355c4d1cb6a0269788ab54bc/FLAGbcf09ff5b [2024-11-27 19:50:36,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/data/f20b04bb5/84b15bee355c4d1cb6a0269788ab54bc [2024-11-27 19:50:36,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:50:36,394 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:50:36,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:36,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:50:36,406 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:50:36,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:36,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f86899a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36, skipping insertion in model container [2024-11-27 19:50:36,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:36,452 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:50:36,721 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_802af469-4823-4343-b9c7-ce6bbbe4b649/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4940,4953] [2024-11-27 19:50:36,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:36,783 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:50:36,834 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_802af469-4823-4343-b9c7-ce6bbbe4b649/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4940,4953] [2024-11-27 19:50:36,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:36,868 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:50:36,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36 WrapperNode [2024-11-27 19:50:36,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:36,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:36,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:50:36,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:50:36,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:36,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:36,941 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 370 [2024-11-27 19:50:36,941 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:36,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:50:36,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:50:36,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:50:36,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:36,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:36,964 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:36,986 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]. [2024-11-27 19:50:36,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:36,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:36,996 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:36,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:50:37,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:50:37,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:50:37,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:50:37,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:37,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:37,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:50:37,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:50:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:50:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:50:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:50:37,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:50:37,240 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:50:37,243 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:50:37,801 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-27 19:50:37,801 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:50:37,816 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:50:37,816 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 19:50:37,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:37 BoogieIcfgContainer [2024-11-27 19:50:37,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:50:37,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:50:37,822 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:50:37,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:50:37,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:50:36" (1/3) ... [2024-11-27 19:50:37,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5f3cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:37, skipping insertion in model container [2024-11-27 19:50:37,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (2/3) ... [2024-11-27 19:50:37,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5f3cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:37, skipping insertion in model container [2024-11-27 19:50:37,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:37" (3/3) ... [2024-11-27 19:50:37,830 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 19:50:37,847 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:50:37,851 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 81 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 19:50:37,927 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:50:37,940 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;@1c2dce05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:50:37,941 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:50:37,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 79 states have (on average 1.7088607594936709) internal successors, (135), 80 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:37,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 19:50:37,953 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:37,954 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] [2024-11-27 19:50:37,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:37,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:37,960 INFO L85 PathProgramCache]: Analyzing trace with hash 377049112, now seen corresponding path program 1 times [2024-11-27 19:50:37,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:37,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677251759] [2024-11-27 19:50:37,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:37,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:38,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:38,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677251759] [2024-11-27 19:50:38,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677251759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:38,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:38,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:38,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876626095] [2024-11-27 19:50:38,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:38,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:38,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:38,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:38,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:38,562 INFO L87 Difference]: Start difference. First operand has 81 states, 79 states have (on average 1.7088607594936709) internal successors, (135), 80 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 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) [2024-11-27 19:50:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:38,614 INFO L93 Difference]: Finished difference Result 183 states and 292 transitions. [2024-11-27 19:50:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:38,617 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 [2024-11-27 19:50:38,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:38,626 INFO L225 Difference]: With dead ends: 183 [2024-11-27 19:50:38,626 INFO L226 Difference]: Without dead ends: 122 [2024-11-27 19:50:38,632 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 [2024-11-27 19:50:38,636 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 84 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:38,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 273 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:38,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-27 19:50:38,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2024-11-27 19:50:38,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4705882352941178) internal successors, (175), 119 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:38,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 175 transitions. [2024-11-27 19:50:38,696 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 175 transitions. Word has length 48 [2024-11-27 19:50:38,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:38,697 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 175 transitions. [2024-11-27 19:50:38,697 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) [2024-11-27 19:50:38,697 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 175 transitions. [2024-11-27 19:50:38,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-27 19:50:38,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:38,699 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] [2024-11-27 19:50:38,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:50:38,699 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:38,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash 292717965, now seen corresponding path program 1 times [2024-11-27 19:50:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:38,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169673633] [2024-11-27 19:50:38,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:38,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:38,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169673633] [2024-11-27 19:50:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169673633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:38,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134200091] [2024-11-27 19:50:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:38,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:38,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:38,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:38,921 INFO L87 Difference]: Start difference. First operand 120 states and 175 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-11-27 19:50:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:38,968 INFO L93 Difference]: Finished difference Result 292 states and 447 transitions. [2024-11-27 19:50:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:38,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 [2024-11-27 19:50:38,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:38,971 INFO L225 Difference]: With dead ends: 292 [2024-11-27 19:50:38,971 INFO L226 Difference]: Without dead ends: 198 [2024-11-27 19:50:38,972 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 [2024-11-27 19:50:38,973 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 62 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:38,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 231 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:38,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-27 19:50:38,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2024-11-27 19:50:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.5128205128205128) internal successors, (295), 195 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 295 transitions. [2024-11-27 19:50:38,988 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 295 transitions. Word has length 49 [2024-11-27 19:50:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:38,989 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 295 transitions. [2024-11-27 19:50:38,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-11-27 19:50:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 295 transitions. [2024-11-27 19:50:38,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-27 19:50:38,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:38,993 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] [2024-11-27 19:50:38,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:50:38,994 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:38,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:38,995 INFO L85 PathProgramCache]: Analyzing trace with hash -875864605, now seen corresponding path program 1 times [2024-11-27 19:50:38,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:38,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855628403] [2024-11-27 19:50:38,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:39,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855628403] [2024-11-27 19:50:39,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855628403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:39,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:39,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:39,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920658985] [2024-11-27 19:50:39,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:39,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:39,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:39,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:39,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:39,181 INFO L87 Difference]: Start difference. First operand 196 states and 295 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2024-11-27 19:50:39,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:39,231 INFO L93 Difference]: Finished difference Result 504 states and 781 transitions. [2024-11-27 19:50:39,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:39,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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 [2024-11-27 19:50:39,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:39,234 INFO L225 Difference]: With dead ends: 504 [2024-11-27 19:50:39,234 INFO L226 Difference]: Without dead ends: 334 [2024-11-27 19:50:39,239 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 [2024-11-27 19:50:39,240 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 57 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:39,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 227 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:39,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-27 19:50:39,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 332. [2024-11-27 19:50:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.5317220543806647) internal successors, (507), 331 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 507 transitions. [2024-11-27 19:50:39,279 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 507 transitions. Word has length 50 [2024-11-27 19:50:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:39,279 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 507 transitions. [2024-11-27 19:50:39,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2024-11-27 19:50:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 507 transitions. [2024-11-27 19:50:39,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-27 19:50:39,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:39,280 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] [2024-11-27 19:50:39,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:50:39,281 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:39,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1524907140, now seen corresponding path program 1 times [2024-11-27 19:50:39,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:39,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973623966] [2024-11-27 19:50:39,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:39,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:39,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:39,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973623966] [2024-11-27 19:50:39,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973623966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:39,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:39,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:39,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950800696] [2024-11-27 19:50:39,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:39,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:39,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:39,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:39,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:39,552 INFO L87 Difference]: Start difference. First operand 332 states and 507 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2024-11-27 19:50:39,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:39,892 INFO L93 Difference]: Finished difference Result 2780 states and 4355 transitions. [2024-11-27 19:50:39,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 19:50:39,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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 [2024-11-27 19:50:39,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:39,908 INFO L225 Difference]: With dead ends: 2780 [2024-11-27 19:50:39,908 INFO L226 Difference]: Without dead ends: 2474 [2024-11-27 19:50:39,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:50:39,912 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 697 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:39,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1115 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:50:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2024-11-27 19:50:39,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 636. [2024-11-27 19:50:39,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 1.5291338582677165) internal successors, (971), 635 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 971 transitions. [2024-11-27 19:50:39,995 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 971 transitions. Word has length 51 [2024-11-27 19:50:39,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:39,996 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 971 transitions. [2024-11-27 19:50:39,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2024-11-27 19:50:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 971 transitions. [2024-11-27 19:50:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-27 19:50:39,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:39,997 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] [2024-11-27 19:50:39,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:50:39,998 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:40,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:40,001 INFO L85 PathProgramCache]: Analyzing trace with hash -48905761, now seen corresponding path program 1 times [2024-11-27 19:50:40,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:40,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219466030] [2024-11-27 19:50:40,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:40,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:40,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:40,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219466030] [2024-11-27 19:50:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219466030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:40,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:40,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:40,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413037601] [2024-11-27 19:50:40,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:40,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:40,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:40,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:40,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:40,526 INFO L87 Difference]: Start difference. First operand 636 states and 971 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2024-11-27 19:50:40,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:40,715 INFO L93 Difference]: Finished difference Result 1248 states and 1917 transitions. [2024-11-27 19:50:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:40,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 [2024-11-27 19:50:40,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:40,720 INFO L225 Difference]: With dead ends: 1248 [2024-11-27 19:50:40,720 INFO L226 Difference]: Without dead ends: 638 [2024-11-27 19:50:40,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:50:40,722 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 168 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:40,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 336 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:40,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-11-27 19:50:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2024-11-27 19:50:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 1.5165354330708662) internal successors, (963), 635 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 963 transitions. [2024-11-27 19:50:40,748 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 963 transitions. Word has length 53 [2024-11-27 19:50:40,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:40,748 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 963 transitions. [2024-11-27 19:50:40,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2024-11-27 19:50:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 963 transitions. [2024-11-27 19:50:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-27 19:50:40,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:40,750 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] [2024-11-27 19:50:40,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 19:50:40,750 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:40,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:40,751 INFO L85 PathProgramCache]: Analyzing trace with hash -69908416, now seen corresponding path program 1 times [2024-11-27 19:50:40,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:40,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308919183] [2024-11-27 19:50:40,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:40,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:40,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:40,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308919183] [2024-11-27 19:50:40,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308919183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:40,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:40,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:40,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996033823] [2024-11-27 19:50:40,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:40,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:40,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:40,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:40,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:40,965 INFO L87 Difference]: Start difference. First operand 636 states and 963 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2024-11-27 19:50:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:41,012 INFO L93 Difference]: Finished difference Result 1768 states and 2685 transitions. [2024-11-27 19:50:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:41,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 [2024-11-27 19:50:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:41,019 INFO L225 Difference]: With dead ends: 1768 [2024-11-27 19:50:41,019 INFO L226 Difference]: Without dead ends: 1158 [2024-11-27 19:50:41,023 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 [2024-11-27 19:50:41,024 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 47 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:41,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 181 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2024-11-27 19:50:41,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1140. [2024-11-27 19:50:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 1.4846356453028973) internal successors, (1691), 1139 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1691 transitions. [2024-11-27 19:50:41,085 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1691 transitions. Word has length 53 [2024-11-27 19:50:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:41,085 INFO L471 AbstractCegarLoop]: Abstraction has 1140 states and 1691 transitions. [2024-11-27 19:50:41,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2024-11-27 19:50:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1691 transitions. [2024-11-27 19:50:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 19:50:41,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:41,086 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] [2024-11-27 19:50:41,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 19:50:41,087 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:41,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1517987980, now seen corresponding path program 1 times [2024-11-27 19:50:41,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:41,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273203576] [2024-11-27 19:50:41,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:41,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:41,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:41,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273203576] [2024-11-27 19:50:41,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273203576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:41,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:41,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:41,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218403252] [2024-11-27 19:50:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:41,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:41,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:41,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:41,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:41,282 INFO L87 Difference]: Start difference. First operand 1140 states and 1691 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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) [2024-11-27 19:50:41,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:41,405 INFO L93 Difference]: Finished difference Result 2254 states and 3356 transitions. [2024-11-27 19:50:41,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:41,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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 [2024-11-27 19:50:41,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:41,410 INFO L225 Difference]: With dead ends: 2254 [2024-11-27 19:50:41,410 INFO L226 Difference]: Without dead ends: 1140 [2024-11-27 19:50:41,412 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 [2024-11-27 19:50:41,415 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 245 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:41,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 94 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2024-11-27 19:50:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1140. [2024-11-27 19:50:41,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 1.4705882352941178) internal successors, (1675), 1139 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1675 transitions. [2024-11-27 19:50:41,462 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1675 transitions. Word has length 54 [2024-11-27 19:50:41,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:41,463 INFO L471 AbstractCegarLoop]: Abstraction has 1140 states and 1675 transitions. [2024-11-27 19:50:41,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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) [2024-11-27 19:50:41,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1675 transitions. [2024-11-27 19:50:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 19:50:41,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:41,466 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] [2024-11-27 19:50:41,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 19:50:41,466 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:41,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2047278481, now seen corresponding path program 1 times [2024-11-27 19:50:41,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:41,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097146227] [2024-11-27 19:50:41,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:41,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:41,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:41,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097146227] [2024-11-27 19:50:41,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097146227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:41,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:41,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:41,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337183248] [2024-11-27 19:50:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:41,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:41,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:41,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:41,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:41,622 INFO L87 Difference]: Start difference. First operand 1140 states and 1675 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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) [2024-11-27 19:50:41,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:41,732 INFO L93 Difference]: Finished difference Result 2254 states and 3324 transitions. [2024-11-27 19:50:41,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:41,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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 [2024-11-27 19:50:41,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:41,737 INFO L225 Difference]: With dead ends: 2254 [2024-11-27 19:50:41,738 INFO L226 Difference]: Without dead ends: 1140 [2024-11-27 19:50:41,739 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 [2024-11-27 19:50:41,740 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 268 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 78 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 [2024-11-27 19:50:41,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 78 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:41,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2024-11-27 19:50:41,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1140. [2024-11-27 19:50:41,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 1.456540825285338) internal successors, (1659), 1139 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:41,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1659 transitions. [2024-11-27 19:50:41,769 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1659 transitions. Word has length 54 [2024-11-27 19:50:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:41,769 INFO L471 AbstractCegarLoop]: Abstraction has 1140 states and 1659 transitions. [2024-11-27 19:50:41,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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) [2024-11-27 19:50:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1659 transitions. [2024-11-27 19:50:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 19:50:41,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:41,770 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] [2024-11-27 19:50:41,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 19:50:41,770 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:41,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:41,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1919193174, now seen corresponding path program 1 times [2024-11-27 19:50:41,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:41,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734896325] [2024-11-27 19:50:41,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:41,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:41,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:41,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734896325] [2024-11-27 19:50:41,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734896325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:41,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:41,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916258848] [2024-11-27 19:50:41,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:41,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:41,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:41,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:41,896 INFO L87 Difference]: Start difference. First operand 1140 states and 1659 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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) [2024-11-27 19:50:42,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:42,001 INFO L93 Difference]: Finished difference Result 2254 states and 3292 transitions. [2024-11-27 19:50:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:42,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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 [2024-11-27 19:50:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:42,006 INFO L225 Difference]: With dead ends: 2254 [2024-11-27 19:50:42,006 INFO L226 Difference]: Without dead ends: 1140 [2024-11-27 19:50:42,008 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 [2024-11-27 19:50:42,010 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 252 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:42,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 86 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:42,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2024-11-27 19:50:42,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1140. [2024-11-27 19:50:42,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 1.4424934152765583) internal successors, (1643), 1139 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1643 transitions. [2024-11-27 19:50:42,036 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1643 transitions. Word has length 54 [2024-11-27 19:50:42,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:42,036 INFO L471 AbstractCegarLoop]: Abstraction has 1140 states and 1643 transitions. [2024-11-27 19:50:42,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 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) [2024-11-27 19:50:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1643 transitions. [2024-11-27 19:50:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 19:50:42,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:42,037 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] [2024-11-27 19:50:42,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 19:50:42,038 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:42,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:42,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1053660785, now seen corresponding path program 1 times [2024-11-27 19:50:42,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:42,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364477024] [2024-11-27 19:50:42,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:42,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:42,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:42,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364477024] [2024-11-27 19:50:42,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364477024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:42,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:42,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:50:42,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188567803] [2024-11-27 19:50:42,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:42,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:42,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:42,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:42,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:42,311 INFO L87 Difference]: Start difference. First operand 1140 states and 1643 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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) [2024-11-27 19:50:42,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:42,346 INFO L93 Difference]: Finished difference Result 1174 states and 1692 transitions. [2024-11-27 19:50:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:42,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 [2024-11-27 19:50:42,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:42,350 INFO L225 Difference]: With dead ends: 1174 [2024-11-27 19:50:42,350 INFO L226 Difference]: Without dead ends: 1172 [2024-11-27 19:50:42,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:42,351 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:42,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 397 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:42,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2024-11-27 19:50:42,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2024-11-27 19:50:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 1.4235695986336465) internal successors, (1667), 1171 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1667 transitions. [2024-11-27 19:50:42,399 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1667 transitions. Word has length 54 [2024-11-27 19:50:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:42,399 INFO L471 AbstractCegarLoop]: Abstraction has 1172 states and 1667 transitions. [2024-11-27 19:50:42,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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) [2024-11-27 19:50:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1667 transitions. [2024-11-27 19:50:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 19:50:42,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:42,400 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] [2024-11-27 19:50:42,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 19:50:42,401 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:42,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:42,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1226019551, now seen corresponding path program 1 times [2024-11-27 19:50:42,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:42,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237166254] [2024-11-27 19:50:42,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:42,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:42,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:42,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237166254] [2024-11-27 19:50:42,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237166254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:42,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:42,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:42,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218226493] [2024-11-27 19:50:42,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:42,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:42,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:42,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:42,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:42,485 INFO L87 Difference]: Start difference. First operand 1172 states and 1667 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-27 19:50:42,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:42,512 INFO L93 Difference]: Finished difference Result 2299 states and 3305 transitions. [2024-11-27 19:50:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:42,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 [2024-11-27 19:50:42,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:42,518 INFO L225 Difference]: With dead ends: 2299 [2024-11-27 19:50:42,518 INFO L226 Difference]: Without dead ends: 1656 [2024-11-27 19:50:42,519 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 [2024-11-27 19:50:42,519 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 66 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:42,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 234 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2024-11-27 19:50:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1654. [2024-11-27 19:50:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 1.4162129461584998) internal successors, (2341), 1653 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2341 transitions. [2024-11-27 19:50:42,559 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2341 transitions. Word has length 54 [2024-11-27 19:50:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:42,559 INFO L471 AbstractCegarLoop]: Abstraction has 1654 states and 2341 transitions. [2024-11-27 19:50:42,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-27 19:50:42,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2341 transitions. [2024-11-27 19:50:42,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 19:50:42,561 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:42,561 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:42,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 19:50:42,562 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:42,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:42,563 INFO L85 PathProgramCache]: Analyzing trace with hash 595199301, now seen corresponding path program 1 times [2024-11-27 19:50:42,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:42,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395349311] [2024-11-27 19:50:42,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:42,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 19:50:42,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:42,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395349311] [2024-11-27 19:50:42,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395349311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:42,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:42,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:42,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470818535] [2024-11-27 19:50:42,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:42,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:42,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:42,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:42,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:42,755 INFO L87 Difference]: Start difference. First operand 1654 states and 2341 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:42,900 INFO L93 Difference]: Finished difference Result 8472 states and 12022 transitions. [2024-11-27 19:50:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:42,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-27 19:50:42,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:42,922 INFO L225 Difference]: With dead ends: 8472 [2024-11-27 19:50:42,922 INFO L226 Difference]: Without dead ends: 6846 [2024-11-27 19:50:42,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:50:42,925 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 489 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:42,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 548 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:42,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6846 states. [2024-11-27 19:50:43,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6846 to 3278. [2024-11-27 19:50:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 1.4125724748245347) internal successors, (4629), 3277 states have internal predecessors, (4629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 4629 transitions. [2024-11-27 19:50:43,024 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 4629 transitions. Word has length 77 [2024-11-27 19:50:43,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:43,024 INFO L471 AbstractCegarLoop]: Abstraction has 3278 states and 4629 transitions. [2024-11-27 19:50:43,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 4629 transitions. [2024-11-27 19:50:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 19:50:43,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:43,029 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:43,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 19:50:43,030 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:43,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash -558746805, now seen corresponding path program 1 times [2024-11-27 19:50:43,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:43,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206686738] [2024-11-27 19:50:43,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:43,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-27 19:50:43,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:43,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206686738] [2024-11-27 19:50:43,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206686738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:43,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:43,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:43,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497328946] [2024-11-27 19:50:43,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:43,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:43,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:43,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:43,230 INFO L87 Difference]: Start difference. First operand 3278 states and 4629 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:43,367 INFO L93 Difference]: Finished difference Result 10096 states and 14310 transitions. [2024-11-27 19:50:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:43,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-27 19:50:43,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:43,393 INFO L225 Difference]: With dead ends: 10096 [2024-11-27 19:50:43,393 INFO L226 Difference]: Without dead ends: 8470 [2024-11-27 19:50:43,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:50:43,397 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 476 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:43,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 563 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8470 states. [2024-11-27 19:50:43,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8470 to 5718. [2024-11-27 19:50:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5717 states have (on average 1.4065069092181215) internal successors, (8041), 5717 states have internal predecessors, (8041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 8041 transitions. [2024-11-27 19:50:43,542 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 8041 transitions. Word has length 77 [2024-11-27 19:50:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:43,542 INFO L471 AbstractCegarLoop]: Abstraction has 5718 states and 8041 transitions. [2024-11-27 19:50:43,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 8041 transitions. [2024-11-27 19:50:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 19:50:43,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:43,546 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:43,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 19:50:43,546 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:43,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:43,547 INFO L85 PathProgramCache]: Analyzing trace with hash -262701377, now seen corresponding path program 1 times [2024-11-27 19:50:43,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:43,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98042766] [2024-11-27 19:50:43,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:43,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 19:50:43,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:43,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98042766] [2024-11-27 19:50:43,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98042766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:43,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:43,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:43,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736291842] [2024-11-27 19:50:43,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:43,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:43,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:43,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:43,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:43,729 INFO L87 Difference]: Start difference. First operand 5718 states and 8041 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:43,888 INFO L93 Difference]: Finished difference Result 11720 states and 16598 transitions. [2024-11-27 19:50:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:43,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-27 19:50:43,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:43,923 INFO L225 Difference]: With dead ends: 11720 [2024-11-27 19:50:43,923 INFO L226 Difference]: Without dead ends: 10094 [2024-11-27 19:50:43,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:50:43,928 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 441 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:43,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 645 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:43,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10094 states. [2024-11-27 19:50:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10094 to 7342. [2024-11-27 19:50:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7342 states, 7341 states have (on average 1.4070290151205558) internal successors, (10329), 7341 states have internal predecessors, (10329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7342 states to 7342 states and 10329 transitions. [2024-11-27 19:50:44,124 INFO L78 Accepts]: Start accepts. Automaton has 7342 states and 10329 transitions. Word has length 77 [2024-11-27 19:50:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:44,125 INFO L471 AbstractCegarLoop]: Abstraction has 7342 states and 10329 transitions. [2024-11-27 19:50:44,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 7342 states and 10329 transitions. [2024-11-27 19:50:44,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 19:50:44,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:44,127 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] [2024-11-27 19:50:44,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 19:50:44,127 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:44,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:44,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2055185859, now seen corresponding path program 1 times [2024-11-27 19:50:44,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:44,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010725880] [2024-11-27 19:50:44,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:44,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 19:50:44,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:44,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010725880] [2024-11-27 19:50:44,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010725880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:44,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:44,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:44,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928244591] [2024-11-27 19:50:44,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:44,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:44,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:44,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:44,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:44,301 INFO L87 Difference]: Start difference. First operand 7342 states and 10329 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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) [2024-11-27 19:50:44,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:44,469 INFO L93 Difference]: Finished difference Result 12336 states and 17494 transitions. [2024-11-27 19:50:44,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:44,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 78 [2024-11-27 19:50:44,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:44,493 INFO L225 Difference]: With dead ends: 12336 [2024-11-27 19:50:44,493 INFO L226 Difference]: Without dead ends: 11214 [2024-11-27 19:50:44,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:50:44,498 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 432 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:44,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 602 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11214 states. [2024-11-27 19:50:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11214 to 8462. [2024-11-27 19:50:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8462 states, 8461 states have (on average 1.4098806287672851) internal successors, (11929), 8461 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 11929 transitions. [2024-11-27 19:50:44,727 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 11929 transitions. Word has length 78 [2024-11-27 19:50:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:44,727 INFO L471 AbstractCegarLoop]: Abstraction has 8462 states and 11929 transitions. [2024-11-27 19:50:44,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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) [2024-11-27 19:50:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 11929 transitions. [2024-11-27 19:50:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-27 19:50:44,730 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:44,731 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] [2024-11-27 19:50:44,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 19:50:44,731 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:44,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash -144941472, now seen corresponding path program 1 times [2024-11-27 19:50:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:44,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552542920] [2024-11-27 19:50:44,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:44,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552542920] [2024-11-27 19:50:44,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552542920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:44,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:44,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:44,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910593460] [2024-11-27 19:50:44,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:44,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:44,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:44,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:44,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:44,856 INFO L87 Difference]: Start difference. First operand 8462 states and 11929 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) [2024-11-27 19:50:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:44,900 INFO L93 Difference]: Finished difference Result 14658 states and 20769 transitions. [2024-11-27 19:50:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:44,900 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 [2024-11-27 19:50:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:44,913 INFO L225 Difference]: With dead ends: 14658 [2024-11-27 19:50:44,913 INFO L226 Difference]: Without dead ends: 6224 [2024-11-27 19:50:44,921 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 [2024-11-27 19:50:44,921 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 48 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:44,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 226 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6224 states. [2024-11-27 19:50:45,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6224 to 6222. [2024-11-27 19:50:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6222 states, 6221 states have (on average 1.4110271660504743) internal successors, (8778), 6221 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 8778 transitions. [2024-11-27 19:50:45,025 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 8778 transitions. Word has length 79 [2024-11-27 19:50:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:45,025 INFO L471 AbstractCegarLoop]: Abstraction has 6222 states and 8778 transitions. [2024-11-27 19:50:45,025 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) [2024-11-27 19:50:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 8778 transitions. [2024-11-27 19:50:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-27 19:50:45,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:45,027 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] [2024-11-27 19:50:45,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 19:50:45,028 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:45,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1559581035, now seen corresponding path program 1 times [2024-11-27 19:50:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176235978] [2024-11-27 19:50:45,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:45,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:45,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:45,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176235978] [2024-11-27 19:50:45,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176235978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:45,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620813956] [2024-11-27 19:50:45,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:45,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:45,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:45,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:45,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:50:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:45,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 19:50:45,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:46,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:48,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620813956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:48,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:48,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-27 19:50:48,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942393597] [2024-11-27 19:50:48,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:48,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 19:50:48,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:48,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 19:50:48,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:50:48,202 INFO L87 Difference]: Start difference. First operand 6222 states and 8778 transitions. Second operand has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 20 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:49,188 INFO L93 Difference]: Finished difference Result 21419 states and 30132 transitions. [2024-11-27 19:50:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 19:50:49,189 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 20 states have internal predecessors, (181), 0 states have call successors, (0), 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 [2024-11-27 19:50:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:49,221 INFO L225 Difference]: With dead ends: 21419 [2024-11-27 19:50:49,221 INFO L226 Difference]: Without dead ends: 15257 [2024-11-27 19:50:49,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=293, Invalid=897, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 19:50:49,231 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 1213 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:49,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 640 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:50:49,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15257 states. [2024-11-27 19:50:49,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15257 to 13097. [2024-11-27 19:50:49,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13097 states, 13096 states have (on average 1.4069181429444104) internal successors, (18425), 13096 states have internal predecessors, (18425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13097 states to 13097 states and 18425 transitions. [2024-11-27 19:50:49,494 INFO L78 Accepts]: Start accepts. Automaton has 13097 states and 18425 transitions. Word has length 79 [2024-11-27 19:50:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:49,495 INFO L471 AbstractCegarLoop]: Abstraction has 13097 states and 18425 transitions. [2024-11-27 19:50:49,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 20 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:49,495 INFO L276 IsEmpty]: Start isEmpty. Operand 13097 states and 18425 transitions. [2024-11-27 19:50:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-27 19:50:49,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:49,497 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] [2024-11-27 19:50:49,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 19:50:49,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 19:50:49,702 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:49,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1183040057, now seen corresponding path program 1 times [2024-11-27 19:50:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:49,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191170139] [2024-11-27 19:50:49,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:49,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:50,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:50,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191170139] [2024-11-27 19:50:50,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191170139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:50,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25207900] [2024-11-27 19:50:50,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:50,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:50,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:50,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:50,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:50:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:50,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 19:50:50,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:51,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:52,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25207900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:52,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:52,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2024-11-27 19:50:52,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194288253] [2024-11-27 19:50:52,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:52,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 19:50:52,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:52,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 19:50:52,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2024-11-27 19:50:52,087 INFO L87 Difference]: Start difference. First operand 13097 states and 18425 transitions. Second operand has 30 states, 30 states have (on average 7.266666666666667) internal successors, (218), 29 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:58,342 INFO L93 Difference]: Finished difference Result 115809 states and 160582 transitions. [2024-11-27 19:50:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-27 19:50:58,342 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.266666666666667) internal successors, (218), 29 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-27 19:50:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:58,558 INFO L225 Difference]: With dead ends: 115809 [2024-11-27 19:50:58,558 INFO L226 Difference]: Without dead ends: 102742 [2024-11-27 19:50:58,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4114 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2403, Invalid=10937, Unknown=0, NotChecked=0, Total=13340 [2024-11-27 19:50:58,593 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 2965 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 3360 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2965 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 3389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:58,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2965 Valid, 1707 Invalid, 3389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3360 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 19:50:58,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102742 states. [2024-11-27 19:50:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102742 to 66119. [2024-11-27 19:50:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66119 states, 66118 states have (on average 1.3924196134184337) internal successors, (92064), 66118 states have internal predecessors, (92064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:59,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66119 states to 66119 states and 92064 transitions. [2024-11-27 19:50:59,885 INFO L78 Accepts]: Start accepts. Automaton has 66119 states and 92064 transitions. Word has length 80 [2024-11-27 19:50:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:59,887 INFO L471 AbstractCegarLoop]: Abstraction has 66119 states and 92064 transitions. [2024-11-27 19:50:59,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.266666666666667) internal successors, (218), 29 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 66119 states and 92064 transitions. [2024-11-27 19:50:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-27 19:50:59,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:59,891 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] [2024-11-27 19:50:59,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 19:51:00,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 19:51:00,096 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:00,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:00,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2040940735, now seen corresponding path program 1 times [2024-11-27 19:51:00,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:00,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864780343] [2024-11-27 19:51:00,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:00,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:00,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:00,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864780343] [2024-11-27 19:51:00,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864780343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:00,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600719912] [2024-11-27 19:51:00,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:00,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:00,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:00,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:00,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:51:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:00,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 19:51:00,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:01,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:02,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600719912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:02,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:02,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-27 19:51:02,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739494250] [2024-11-27 19:51:02,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:02,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 19:51:02,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:02,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 19:51:02,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2024-11-27 19:51:02,633 INFO L87 Difference]: Start difference. First operand 66119 states and 92064 transitions. Second operand has 25 states, 25 states have (on average 9.08) internal successors, (227), 24 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:09,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:09,105 INFO L93 Difference]: Finished difference Result 358449 states and 495789 transitions. [2024-11-27 19:51:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-27 19:51:09,106 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.08) internal successors, (227), 24 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-27 19:51:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:09,548 INFO L225 Difference]: With dead ends: 358449 [2024-11-27 19:51:09,548 INFO L226 Difference]: Without dead ends: 292469 [2024-11-27 19:51:09,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7046 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3278, Invalid=17028, Unknown=0, NotChecked=0, Total=20306 [2024-11-27 19:51:09,661 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 3991 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3991 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:09,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3991 Valid, 1167 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 19:51:09,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292469 states. [2024-11-27 19:51:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292469 to 179835. [2024-11-27 19:51:13,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179835 states, 179834 states have (on average 1.3815852397210762) internal successors, (248456), 179834 states have internal predecessors, (248456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179835 states to 179835 states and 248456 transitions. [2024-11-27 19:51:14,349 INFO L78 Accepts]: Start accepts. Automaton has 179835 states and 248456 transitions. Word has length 80 [2024-11-27 19:51:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:14,349 INFO L471 AbstractCegarLoop]: Abstraction has 179835 states and 248456 transitions. [2024-11-27 19:51:14,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.08) internal successors, (227), 24 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:14,350 INFO L276 IsEmpty]: Start isEmpty. Operand 179835 states and 248456 transitions. [2024-11-27 19:51:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-27 19:51:14,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:14,369 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:14,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 19:51:14,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:14,570 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:14,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:14,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1263877048, now seen corresponding path program 1 times [2024-11-27 19:51:14,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:14,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860758543] [2024-11-27 19:51:14,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:14,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:14,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860758543] [2024-11-27 19:51:14,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860758543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:14,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:14,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:14,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782312717] [2024-11-27 19:51:14,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:14,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:14,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:14,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:14,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:14,795 INFO L87 Difference]: Start difference. First operand 179835 states and 248456 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:16,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:16,332 INFO L93 Difference]: Finished difference Result 270589 states and 374045 transitions. [2024-11-27 19:51:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:16,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-27 19:51:16,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:16,525 INFO L225 Difference]: With dead ends: 270589 [2024-11-27 19:51:16,525 INFO L226 Difference]: Without dead ends: 91045 [2024-11-27 19:51:16,601 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 [2024-11-27 19:51:16,605 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 39 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:16,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 210 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:51:16,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91045 states. [2024-11-27 19:51:17,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91045 to 89723. [2024-11-27 19:51:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89723 states, 89722 states have (on average 1.3663761396313057) internal successors, (122594), 89722 states have internal predecessors, (122594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89723 states to 89723 states and 122594 transitions. [2024-11-27 19:51:17,761 INFO L78 Accepts]: Start accepts. Automaton has 89723 states and 122594 transitions. Word has length 82 [2024-11-27 19:51:17,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:17,761 INFO L471 AbstractCegarLoop]: Abstraction has 89723 states and 122594 transitions. [2024-11-27 19:51:17,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:17,762 INFO L276 IsEmpty]: Start isEmpty. Operand 89723 states and 122594 transitions. [2024-11-27 19:51:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-27 19:51:17,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:17,767 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:17,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 19:51:17,768 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:17,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:17,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1549617493, now seen corresponding path program 1 times [2024-11-27 19:51:17,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:17,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655398738] [2024-11-27 19:51:17,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:17,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:18,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:18,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655398738] [2024-11-27 19:51:18,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655398738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:18,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:18,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251995450] [2024-11-27 19:51:18,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:18,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:18,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:18,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:18,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:18,269 INFO L87 Difference]: Start difference. First operand 89723 states and 122594 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:18,607 INFO L93 Difference]: Finished difference Result 143363 states and 195383 transitions. [2024-11-27 19:51:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:18,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-27 19:51:18,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:18,696 INFO L225 Difference]: With dead ends: 143363 [2024-11-27 19:51:18,696 INFO L226 Difference]: Without dead ends: 53931 [2024-11-27 19:51:18,772 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 [2024-11-27 19:51:18,772 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 32 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:18,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 195 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:51:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53931 states. [2024-11-27 19:51:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53931 to 53929. [2024-11-27 19:51:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53929 states, 53928 states have (on average 1.342345349354695) internal successors, (72390), 53928 states have internal predecessors, (72390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53929 states to 53929 states and 72390 transitions. [2024-11-27 19:51:19,674 INFO L78 Accepts]: Start accepts. Automaton has 53929 states and 72390 transitions. Word has length 82 [2024-11-27 19:51:19,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:19,674 INFO L471 AbstractCegarLoop]: Abstraction has 53929 states and 72390 transitions. [2024-11-27 19:51:19,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:19,674 INFO L276 IsEmpty]: Start isEmpty. Operand 53929 states and 72390 transitions. [2024-11-27 19:51:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-27 19:51:19,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:19,678 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] [2024-11-27 19:51:19,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 19:51:19,678 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:19,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:19,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1110890325, now seen corresponding path program 1 times [2024-11-27 19:51:19,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:19,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130777183] [2024-11-27 19:51:19,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:19,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:20,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:20,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130777183] [2024-11-27 19:51:20,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130777183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:20,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361787970] [2024-11-27 19:51:20,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:20,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:20,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:20,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:20,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_802af469-4823-4343-b9c7-ce6bbbe4b649/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:51:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:20,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-27 19:51:20,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:27,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:33,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361787970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:33,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:33,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 32, 30] total 71 [2024-11-27 19:51:33,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57358653] [2024-11-27 19:51:33,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:33,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-27 19:51:33,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:33,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-27 19:51:33,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=4480, Unknown=0, NotChecked=0, Total=4970 [2024-11-27 19:51:33,663 INFO L87 Difference]: Start difference. First operand 53929 states and 72390 transitions. Second operand has 71 states, 71 states have (on average 3.1971830985915495) internal successors, (227), 71 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)