./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7334648c93226b30578843a7fb29bf568bbbf46b83ab126a034690ad505a2960 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:11:50,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:11:50,120 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 02:11:50,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:11:50,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:11:50,147 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:11:50,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:11:50,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:11:50,148 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:11:50,148 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:11:50,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:11:50,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:11:50,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:11:50,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:11:50,149 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:11:50,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:11:50,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 02:11:50,149 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 02:11:50,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 02:11:50,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 02:11:50,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:11:50,150 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 02:11:50,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:11:50,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 02:11:50,150 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 02:11:50,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 02:11:50,151 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:11:50,151 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:11:50,151 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:11:50,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:11:50,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:11:50,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:11:50,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:11:50,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:11:50,152 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:11:50,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:11:50,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:11:50,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:11:50,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:11:50,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:11:50,153 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 02:11:50,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 02:11:50,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 02:11:50,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 02:11:50,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:11:50,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:11:50,153 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:11:50,153 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:11:50,154 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_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7334648c93226b30578843a7fb29bf568bbbf46b83ab126a034690ad505a2960 [2024-11-24 02:11:50,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:11:50,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:11:50,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:11:50,427 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:11:50,428 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:11:50,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-24 02:11:53,686 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/data/d3fd68a05/20061b94d5f94a67b8668c6451192d03/FLAG3b45c14e5 [2024-11-24 02:11:53,978 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:11:53,978 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-24 02:11:53,989 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/data/d3fd68a05/20061b94d5f94a67b8668c6451192d03/FLAG3b45c14e5 [2024-11-24 02:11:54,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/data/d3fd68a05/20061b94d5f94a67b8668c6451192d03 [2024-11-24 02:11:54,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:11:54,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:11:54,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:11:54,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:11:54,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:11:54,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7de8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54, skipping insertion in model container [2024-11-24 02:11:54,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,045 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:11:54,319 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_37ce59b8-5912-44e4-9bef-6031242253d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6730,6743] [2024-11-24 02:11:54,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:11:54,389 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:11:54,441 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_37ce59b8-5912-44e4-9bef-6031242253d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6730,6743] [2024-11-24 02:11:54,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:11:54,499 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:11:54,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54 WrapperNode [2024-11-24 02:11:54,500 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:11:54,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:11:54,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:11:54,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:11:54,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,572 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 536 [2024-11-24 02:11:54,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:11:54,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:11:54,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:11:54,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:11:54,587 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,594 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,617 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 02:11:54,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,625 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,627 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:11:54,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:11:54,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:11:54,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:11:54,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (1/1) ... [2024-11-24 02:11:54,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:11:54,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:11:54,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:11:54,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:11:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 02:11:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 02:11:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:11:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:11:54,862 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:11:54,864 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:11:55,665 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-11-24 02:11:55,665 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:11:55,681 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:11:55,682 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 02:11:55,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:11:55 BoogieIcfgContainer [2024-11-24 02:11:55,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:11:55,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:11:55,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:11:55,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:11:55,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:11:54" (1/3) ... [2024-11-24 02:11:55,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245c1151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:11:55, skipping insertion in model container [2024-11-24 02:11:55,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:11:54" (2/3) ... [2024-11-24 02:11:55,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245c1151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:11:55, skipping insertion in model container [2024-11-24 02:11:55,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:11:55" (3/3) ... [2024-11-24 02:11:55,694 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-24 02:11:55,716 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:11:55,721 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 118 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-24 02:11:55,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:11:55,810 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;@136a5776, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:11:55,811 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 02:11:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 116 states have (on average 1.7327586206896552) internal successors, (201), 117 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-24 02:11:55,827 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:55,828 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:11:55,828 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:11:55,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:55,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1122612567, now seen corresponding path program 1 times [2024-11-24 02:11:55,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:55,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199714574] [2024-11-24 02:11:55,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:55,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:11:56,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:56,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199714574] [2024-11-24 02:11:56,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199714574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:11:56,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:11:56,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:11:56,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963548410] [2024-11-24 02:11:56,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:11:56,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:11:56,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:56,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:11:56,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:11:56,464 INFO L87 Difference]: Start difference. First operand has 118 states, 116 states have (on average 1.7327586206896552) internal successors, (201), 117 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:56,537 INFO L93 Difference]: Finished difference Result 260 states and 422 transitions. [2024-11-24 02:11:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:11:56,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-24 02:11:56,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:56,549 INFO L225 Difference]: With dead ends: 260 [2024-11-24 02:11:56,549 INFO L226 Difference]: Without dead ends: 179 [2024-11-24 02:11:56,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:11:56,556 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 133 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 403 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 [2024-11-24 02:11:56,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 403 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:11:56,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-24 02:11:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2024-11-24 02:11:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.4545454545454546) internal successors, (256), 176 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 256 transitions. [2024-11-24 02:11:56,605 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 256 transitions. Word has length 73 [2024-11-24 02:11:56,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:56,605 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 256 transitions. [2024-11-24 02:11:56,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 256 transitions. [2024-11-24 02:11:56,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-24 02:11:56,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:56,608 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:11:56,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 02:11:56,609 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:11:56,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:56,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1622464055, now seen corresponding path program 1 times [2024-11-24 02:11:56,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:56,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152586568] [2024-11-24 02:11:56,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:56,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:11:56,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:56,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152586568] [2024-11-24 02:11:56,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152586568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:11:56,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:11:56,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:11:56,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398918804] [2024-11-24 02:11:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:11:56,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:11:56,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:56,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:11:56,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:11:56,865 INFO L87 Difference]: Start difference. First operand 177 states and 256 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:56,925 INFO L93 Difference]: Finished difference Result 429 states and 656 transitions. [2024-11-24 02:11:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:11:56,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-24 02:11:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:56,928 INFO L225 Difference]: With dead ends: 429 [2024-11-24 02:11:56,929 INFO L226 Difference]: Without dead ends: 295 [2024-11-24 02:11:56,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:11:56,930 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 94 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 344 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 [2024-11-24 02:11:56,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 344 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:11:56,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-24 02:11:56,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2024-11-24 02:11:56,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.5068493150684932) internal successors, (440), 292 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:56,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 440 transitions. [2024-11-24 02:11:56,957 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 440 transitions. Word has length 74 [2024-11-24 02:11:56,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:56,957 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 440 transitions. [2024-11-24 02:11:56,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 440 transitions. [2024-11-24 02:11:56,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-24 02:11:56,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:56,959 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:11:56,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 02:11:56,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:11:56,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:56,960 INFO L85 PathProgramCache]: Analyzing trace with hash 549627260, now seen corresponding path program 1 times [2024-11-24 02:11:56,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:56,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033620796] [2024-11-24 02:11:56,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:56,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:11:57,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:57,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033620796] [2024-11-24 02:11:57,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033620796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:11:57,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:11:57,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:11:57,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160783278] [2024-11-24 02:11:57,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:11:57,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:11:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:57,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:11:57,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:11:57,164 INFO L87 Difference]: Start difference. First operand 293 states and 440 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:57,217 INFO L93 Difference]: Finished difference Result 761 states and 1182 transitions. [2024-11-24 02:11:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:11:57,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-24 02:11:57,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:57,227 INFO L225 Difference]: With dead ends: 761 [2024-11-24 02:11:57,227 INFO L226 Difference]: Without dead ends: 511 [2024-11-24 02:11:57,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:11:57,229 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 89 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 340 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 [2024-11-24 02:11:57,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 340 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:11:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2024-11-24 02:11:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2024-11-24 02:11:57,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.5354330708661417) internal successors, (780), 508 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:57,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 780 transitions. [2024-11-24 02:11:57,279 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 780 transitions. Word has length 75 [2024-11-24 02:11:57,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:57,280 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 780 transitions. [2024-11-24 02:11:57,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:57,280 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 780 transitions. [2024-11-24 02:11:57,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 02:11:57,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:57,281 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:11:57,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 02:11:57,282 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:11:57,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:57,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1347673334, now seen corresponding path program 1 times [2024-11-24 02:11:57,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:57,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239052241] [2024-11-24 02:11:57,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:57,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:11:57,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:57,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239052241] [2024-11-24 02:11:57,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239052241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:11:57,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:11:57,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:11:57,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700676965] [2024-11-24 02:11:57,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:11:57,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:11:57,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:57,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:11:57,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:11:57,474 INFO L87 Difference]: Start difference. First operand 509 states and 780 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:57,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:57,518 INFO L93 Difference]: Finished difference Result 1377 states and 2150 transitions. [2024-11-24 02:11:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:11:57,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-24 02:11:57,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:57,530 INFO L225 Difference]: With dead ends: 1377 [2024-11-24 02:11:57,530 INFO L226 Difference]: Without dead ends: 911 [2024-11-24 02:11:57,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:11:57,531 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 84 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 336 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 [2024-11-24 02:11:57,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 336 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:11:57,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2024-11-24 02:11:57,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 909. [2024-11-24 02:11:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 908 states have (on average 1.5462555066079295) internal successors, (1404), 908 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:57,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1404 transitions. [2024-11-24 02:11:57,583 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1404 transitions. Word has length 76 [2024-11-24 02:11:57,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:57,583 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1404 transitions. [2024-11-24 02:11:57,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:57,584 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1404 transitions. [2024-11-24 02:11:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 02:11:57,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:57,588 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:11:57,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 02:11:57,588 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:11:57,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1762980839, now seen corresponding path program 1 times [2024-11-24 02:11:57,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:57,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111533439] [2024-11-24 02:11:57,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:57,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:11:57,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111533439] [2024-11-24 02:11:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111533439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:11:57,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:11:57,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:11:57,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773227501] [2024-11-24 02:11:57,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:11:57,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:11:57,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:57,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:11:57,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:11:57,756 INFO L87 Difference]: Start difference. First operand 909 states and 1404 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:57,818 INFO L93 Difference]: Finished difference Result 2513 states and 3918 transitions. [2024-11-24 02:11:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:11:57,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-24 02:11:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:57,827 INFO L225 Difference]: With dead ends: 2513 [2024-11-24 02:11:57,827 INFO L226 Difference]: Without dead ends: 1647 [2024-11-24 02:11:57,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:11:57,831 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 79 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 332 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 [2024-11-24 02:11:57,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:11:57,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2024-11-24 02:11:57,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1645. [2024-11-24 02:11:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 1.5450121654501217) internal successors, (2540), 1644 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:57,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2540 transitions. [2024-11-24 02:11:57,900 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2540 transitions. Word has length 77 [2024-11-24 02:11:57,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:57,901 INFO L471 AbstractCegarLoop]: Abstraction has 1645 states and 2540 transitions. [2024-11-24 02:11:57,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2540 transitions. [2024-11-24 02:11:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-24 02:11:57,902 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:57,902 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:11:57,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 02:11:57,905 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:11:57,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:57,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1296361934, now seen corresponding path program 1 times [2024-11-24 02:11:57,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:57,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303078707] [2024-11-24 02:11:57,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:57,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:11:58,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:58,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303078707] [2024-11-24 02:11:58,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303078707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:11:58,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:11:58,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:11:58,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291147146] [2024-11-24 02:11:58,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:11:58,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:11:58,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:58,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:11:58,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:11:58,251 INFO L87 Difference]: Start difference. First operand 1645 states and 2540 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:58,854 INFO L93 Difference]: Finished difference Result 20869 states and 32504 transitions. [2024-11-24 02:11:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 02:11:58,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-24 02:11:58,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:58,925 INFO L225 Difference]: With dead ends: 20869 [2024-11-24 02:11:58,925 INFO L226 Difference]: Without dead ends: 19267 [2024-11-24 02:11:58,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-11-24 02:11:58,932 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 1770 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:11:58,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 2903 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 02:11:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19267 states. [2024-11-24 02:11:59,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19267 to 3245. [2024-11-24 02:11:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3245 states, 3244 states have (on average 1.532675709001233) internal successors, (4972), 3244 states have internal predecessors, (4972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 4972 transitions. [2024-11-24 02:11:59,232 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 4972 transitions. Word has length 78 [2024-11-24 02:11:59,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:59,233 INFO L471 AbstractCegarLoop]: Abstraction has 3245 states and 4972 transitions. [2024-11-24 02:11:59,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:59,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 4972 transitions. [2024-11-24 02:11:59,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-24 02:11:59,234 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:59,234 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:11:59,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 02:11:59,234 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:11:59,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:59,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1185122290, now seen corresponding path program 1 times [2024-11-24 02:11:59,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:59,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765336332] [2024-11-24 02:11:59,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:59,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:11:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:11:59,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:11:59,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765336332] [2024-11-24 02:11:59,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765336332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:11:59,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:11:59,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:11:59,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557769993] [2024-11-24 02:11:59,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:11:59,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:11:59,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:11:59,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:11:59,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:11:59,425 INFO L87 Difference]: Start difference. First operand 3245 states and 4972 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:59,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:11:59,487 INFO L93 Difference]: Finished difference Result 9297 states and 14222 transitions. [2024-11-24 02:11:59,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:11:59,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-24 02:11:59,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:11:59,514 INFO L225 Difference]: With dead ends: 9297 [2024-11-24 02:11:59,514 INFO L226 Difference]: Without dead ends: 6095 [2024-11-24 02:11:59,519 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 [2024-11-24 02:11:59,520 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 69 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 262 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 [2024-11-24 02:11:59,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 262 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:11:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2024-11-24 02:11:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 6029. [2024-11-24 02:11:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6029 states, 6028 states have (on average 1.504313205043132) internal successors, (9068), 6028 states have internal predecessors, (9068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6029 states to 6029 states and 9068 transitions. [2024-11-24 02:11:59,702 INFO L78 Accepts]: Start accepts. Automaton has 6029 states and 9068 transitions. Word has length 80 [2024-11-24 02:11:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:11:59,702 INFO L471 AbstractCegarLoop]: Abstraction has 6029 states and 9068 transitions. [2024-11-24 02:11:59,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:11:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6029 states and 9068 transitions. [2024-11-24 02:11:59,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-24 02:11:59,703 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:11:59,703 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:11:59,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 02:11:59,703 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:11:59,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:11:59,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1164119635, now seen corresponding path program 1 times [2024-11-24 02:11:59,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:11:59,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247592239] [2024-11-24 02:11:59,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:11:59,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:11:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:00,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:00,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247592239] [2024-11-24 02:12:00,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247592239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:00,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:00,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:12:00,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783198422] [2024-11-24 02:12:00,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:00,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:12:00,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:00,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:12:00,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:12:00,289 INFO L87 Difference]: Start difference. First operand 6029 states and 9068 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:00,771 INFO L93 Difference]: Finished difference Result 12017 states and 18094 transitions. [2024-11-24 02:12:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:12:00,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-24 02:12:00,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:00,787 INFO L225 Difference]: With dead ends: 12017 [2024-11-24 02:12:00,788 INFO L226 Difference]: Without dead ends: 6031 [2024-11-24 02:12:00,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-24 02:12:00,795 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 472 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:00,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 747 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:12:00,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6031 states. [2024-11-24 02:12:00,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6031 to 6029. [2024-11-24 02:12:00,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6029 states, 6028 states have (on average 1.493696084936961) internal successors, (9004), 6028 states have internal predecessors, (9004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6029 states to 6029 states and 9004 transitions. [2024-11-24 02:12:00,977 INFO L78 Accepts]: Start accepts. Automaton has 6029 states and 9004 transitions. Word has length 80 [2024-11-24 02:12:00,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:00,977 INFO L471 AbstractCegarLoop]: Abstraction has 6029 states and 9004 transitions. [2024-11-24 02:12:00,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 6029 states and 9004 transitions. [2024-11-24 02:12:00,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-24 02:12:00,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:00,979 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:00,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 02:12:00,979 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:00,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:00,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1866969369, now seen corresponding path program 1 times [2024-11-24 02:12:00,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:00,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073371261] [2024-11-24 02:12:00,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:00,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:01,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073371261] [2024-11-24 02:12:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073371261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:01,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:01,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:12:01,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765596211] [2024-11-24 02:12:01,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:01,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:12:01,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:01,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:12:01,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:12:01,107 INFO L87 Difference]: Start difference. First operand 6029 states and 9004 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:01,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:01,162 INFO L93 Difference]: Finished difference Result 11796 states and 17778 transitions. [2024-11-24 02:12:01,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:12:01,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-24 02:12:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:01,184 INFO L225 Difference]: With dead ends: 11796 [2024-11-24 02:12:01,184 INFO L226 Difference]: Without dead ends: 8593 [2024-11-24 02:12:01,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:12:01,191 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 101 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 356 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 [2024-11-24 02:12:01,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 356 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:12:01,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2024-11-24 02:12:01,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 8591. [2024-11-24 02:12:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8590 states have (on average 1.4917345750873108) internal successors, (12814), 8590 states have internal predecessors, (12814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12814 transitions. [2024-11-24 02:12:01,387 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12814 transitions. Word has length 81 [2024-11-24 02:12:01,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:01,387 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12814 transitions. [2024-11-24 02:12:01,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:01,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12814 transitions. [2024-11-24 02:12:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-24 02:12:01,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:01,389 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:01,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 02:12:01,389 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:01,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:01,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1729879629, now seen corresponding path program 1 times [2024-11-24 02:12:01,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:01,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675611664] [2024-11-24 02:12:01,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:01,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:01,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:01,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675611664] [2024-11-24 02:12:01,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675611664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:01,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:01,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:12:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457657678] [2024-11-24 02:12:01,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:01,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:12:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:01,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:12:01,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:12:01,644 INFO L87 Difference]: Start difference. First operand 8591 states and 12814 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:01,853 INFO L93 Difference]: Finished difference Result 17137 states and 25583 transitions. [2024-11-24 02:12:01,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:12:01,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-24 02:12:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:01,872 INFO L225 Difference]: With dead ends: 17137 [2024-11-24 02:12:01,873 INFO L226 Difference]: Without dead ends: 8591 [2024-11-24 02:12:01,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:12:01,883 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 362 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:01,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 133 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:12:01,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2024-11-24 02:12:02,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 8591. [2024-11-24 02:12:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8590 states have (on average 1.480558789289872) internal successors, (12718), 8590 states have internal predecessors, (12718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:02,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12718 transitions. [2024-11-24 02:12:02,051 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12718 transitions. Word has length 81 [2024-11-24 02:12:02,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:02,052 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12718 transitions. [2024-11-24 02:12:02,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:02,053 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12718 transitions. [2024-11-24 02:12:02,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-24 02:12:02,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:02,054 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:02,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 02:12:02,054 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:02,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:02,055 INFO L85 PathProgramCache]: Analyzing trace with hash -864347240, now seen corresponding path program 1 times [2024-11-24 02:12:02,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:02,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831909704] [2024-11-24 02:12:02,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:02,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:02,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:02,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831909704] [2024-11-24 02:12:02,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831909704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:02,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:02,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:12:02,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450256478] [2024-11-24 02:12:02,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:02,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:12:02,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:02,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:12:02,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:12:02,278 INFO L87 Difference]: Start difference. First operand 8591 states and 12718 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:02,431 INFO L93 Difference]: Finished difference Result 17137 states and 25391 transitions. [2024-11-24 02:12:02,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:12:02,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-24 02:12:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:02,448 INFO L225 Difference]: With dead ends: 17137 [2024-11-24 02:12:02,448 INFO L226 Difference]: Without dead ends: 8591 [2024-11-24 02:12:02,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:12:02,457 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 372 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:02,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 125 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:12:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2024-11-24 02:12:02,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 8591. [2024-11-24 02:12:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8590 states have (on average 1.4693830034924331) internal successors, (12622), 8590 states have internal predecessors, (12622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:02,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12622 transitions. [2024-11-24 02:12:02,597 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12622 transitions. Word has length 81 [2024-11-24 02:12:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:02,597 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12622 transitions. [2024-11-24 02:12:02,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12622 transitions. [2024-11-24 02:12:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-24 02:12:02,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:02,598 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:02,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 02:12:02,598 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:02,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash -736261933, now seen corresponding path program 1 times [2024-11-24 02:12:02,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:02,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551324611] [2024-11-24 02:12:02,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:02,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:02,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551324611] [2024-11-24 02:12:02,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551324611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:02,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:02,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:12:02,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449602578] [2024-11-24 02:12:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:02,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:12:02,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:02,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:12:02,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:12:02,776 INFO L87 Difference]: Start difference. First operand 8591 states and 12622 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:02,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:02,960 INFO L93 Difference]: Finished difference Result 17137 states and 25199 transitions. [2024-11-24 02:12:02,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:12:02,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-24 02:12:02,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:02,980 INFO L225 Difference]: With dead ends: 17137 [2024-11-24 02:12:02,980 INFO L226 Difference]: Without dead ends: 8591 [2024-11-24 02:12:02,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:12:02,989 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 395 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 109 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 [2024-11-24 02:12:02,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 109 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:12:03,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2024-11-24 02:12:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 8591. [2024-11-24 02:12:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8590 states have (on average 1.4582072176949943) internal successors, (12526), 8590 states have internal predecessors, (12526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12526 transitions. [2024-11-24 02:12:03,167 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12526 transitions. Word has length 81 [2024-11-24 02:12:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:03,167 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12526 transitions. [2024-11-24 02:12:03,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:03,167 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12526 transitions. [2024-11-24 02:12:03,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-24 02:12:03,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:03,168 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:03,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 02:12:03,168 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:03,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:03,169 INFO L85 PathProgramCache]: Analyzing trace with hash -367990706, now seen corresponding path program 1 times [2024-11-24 02:12:03,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:03,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962262778] [2024-11-24 02:12:03,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:03,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:03,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:03,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962262778] [2024-11-24 02:12:03,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962262778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:03,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:03,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:12:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946118284] [2024-11-24 02:12:03,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:03,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:12:03,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:03,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:12:03,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:12:03,374 INFO L87 Difference]: Start difference. First operand 8591 states and 12526 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:03,554 INFO L93 Difference]: Finished difference Result 17137 states and 25007 transitions. [2024-11-24 02:12:03,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:12:03,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-24 02:12:03,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:03,575 INFO L225 Difference]: With dead ends: 17137 [2024-11-24 02:12:03,575 INFO L226 Difference]: Without dead ends: 8591 [2024-11-24 02:12:03,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:12:03,584 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 379 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:03,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 117 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:12:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2024-11-24 02:12:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 8591. [2024-11-24 02:12:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8590 states have (on average 1.4470314318975552) internal successors, (12430), 8590 states have internal predecessors, (12430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12430 transitions. [2024-11-24 02:12:03,760 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12430 transitions. Word has length 81 [2024-11-24 02:12:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:03,760 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12430 transitions. [2024-11-24 02:12:03,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12430 transitions. [2024-11-24 02:12:03,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-24 02:12:03,761 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:03,761 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:03,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 02:12:03,762 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:03,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:03,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1130854413, now seen corresponding path program 1 times [2024-11-24 02:12:03,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:03,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165236471] [2024-11-24 02:12:03,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:03,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:04,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:04,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165236471] [2024-11-24 02:12:04,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165236471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:04,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:04,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 02:12:04,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600724439] [2024-11-24 02:12:04,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:04,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:12:04,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:04,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:12:04,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:12:04,183 INFO L87 Difference]: Start difference. First operand 8591 states and 12430 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:04,241 INFO L93 Difference]: Finished difference Result 8849 states and 12815 transitions. [2024-11-24 02:12:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:12:04,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-24 02:12:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:04,259 INFO L225 Difference]: With dead ends: 8849 [2024-11-24 02:12:04,259 INFO L226 Difference]: Without dead ends: 8847 [2024-11-24 02:12:04,262 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 [2024-11-24 02:12:04,262 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 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 [2024-11-24 02:12:04,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:12:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8847 states. [2024-11-24 02:12:04,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8847 to 8847. [2024-11-24 02:12:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8847 states, 8846 states have (on average 1.4304770517748135) internal successors, (12654), 8846 states have internal predecessors, (12654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 12654 transitions. [2024-11-24 02:12:04,372 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 12654 transitions. Word has length 81 [2024-11-24 02:12:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:04,372 INFO L471 AbstractCegarLoop]: Abstraction has 8847 states and 12654 transitions. [2024-11-24 02:12:04,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:04,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 12654 transitions. [2024-11-24 02:12:04,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 02:12:04,381 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:04,381 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:04,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 02:12:04,382 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:04,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:04,382 INFO L85 PathProgramCache]: Analyzing trace with hash 905576252, now seen corresponding path program 1 times [2024-11-24 02:12:04,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:04,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518253308] [2024-11-24 02:12:04,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:04,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 02:12:04,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518253308] [2024-11-24 02:12:04,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518253308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:04,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:04,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:12:04,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122773984] [2024-11-24 02:12:04,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:04,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:12:04,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:04,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:12:04,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:12:04,675 INFO L87 Difference]: Start difference. First operand 8847 states and 12654 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:05,077 INFO L93 Difference]: Finished difference Result 63293 states and 90581 transitions. [2024-11-24 02:12:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:12:05,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 112 [2024-11-24 02:12:05,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:05,200 INFO L225 Difference]: With dead ends: 63293 [2024-11-24 02:12:05,200 INFO L226 Difference]: Without dead ends: 54491 [2024-11-24 02:12:05,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-24 02:12:05,217 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 1549 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:05,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1131 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:12:05,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54491 states. [2024-11-24 02:12:05,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54491 to 17647. [2024-11-24 02:12:05,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17647 states, 17646 states have (on average 1.4261589028675055) internal successors, (25166), 17646 states have internal predecessors, (25166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17647 states to 17647 states and 25166 transitions. [2024-11-24 02:12:05,789 INFO L78 Accepts]: Start accepts. Automaton has 17647 states and 25166 transitions. Word has length 112 [2024-11-24 02:12:05,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:05,790 INFO L471 AbstractCegarLoop]: Abstraction has 17647 states and 25166 transitions. [2024-11-24 02:12:05,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:05,790 INFO L276 IsEmpty]: Start isEmpty. Operand 17647 states and 25166 transitions. [2024-11-24 02:12:05,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 02:12:05,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:05,797 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:05,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 02:12:05,797 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:05,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:05,798 INFO L85 PathProgramCache]: Analyzing trace with hash -818965810, now seen corresponding path program 1 times [2024-11-24 02:12:05,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:05,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094557664] [2024-11-24 02:12:05,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:05,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 02:12:06,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:06,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094557664] [2024-11-24 02:12:06,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094557664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:06,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:12:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412738230] [2024-11-24 02:12:06,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:06,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:12:06,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:06,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:12:06,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:12:06,159 INFO L87 Difference]: Start difference. First operand 17647 states and 25166 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:06,703 INFO L93 Difference]: Finished difference Result 72093 states and 103093 transitions. [2024-11-24 02:12:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:12:06,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 112 [2024-11-24 02:12:06,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:06,916 INFO L225 Difference]: With dead ends: 72093 [2024-11-24 02:12:06,916 INFO L226 Difference]: Without dead ends: 63291 [2024-11-24 02:12:06,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-24 02:12:06,928 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 1440 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:06,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 1178 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 02:12:06,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63291 states. [2024-11-24 02:12:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63291 to 30863. [2024-11-24 02:12:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30863 states, 30862 states have (on average 1.4209707731190462) internal successors, (43854), 30862 states have internal predecessors, (43854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30863 states to 30863 states and 43854 transitions. [2024-11-24 02:12:07,743 INFO L78 Accepts]: Start accepts. Automaton has 30863 states and 43854 transitions. Word has length 112 [2024-11-24 02:12:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:07,743 INFO L471 AbstractCegarLoop]: Abstraction has 30863 states and 43854 transitions. [2024-11-24 02:12:07,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 30863 states and 43854 transitions. [2024-11-24 02:12:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 02:12:07,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:07,749 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:07,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 02:12:07,749 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:07,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:07,751 INFO L85 PathProgramCache]: Analyzing trace with hash 334980296, now seen corresponding path program 1 times [2024-11-24 02:12:07,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:07,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464642729] [2024-11-24 02:12:07,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-24 02:12:08,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:08,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464642729] [2024-11-24 02:12:08,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464642729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:08,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:08,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:12:08,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404784678] [2024-11-24 02:12:08,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:08,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:12:08,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:08,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:12:08,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:12:08,045 INFO L87 Difference]: Start difference. First operand 30863 states and 43854 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:08,621 INFO L93 Difference]: Finished difference Result 80893 states and 115605 transitions. [2024-11-24 02:12:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:12:08,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-11-24 02:12:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:08,926 INFO L225 Difference]: With dead ends: 80893 [2024-11-24 02:12:08,926 INFO L226 Difference]: Without dead ends: 72091 [2024-11-24 02:12:08,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-24 02:12:08,938 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 1270 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:08,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 1273 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 02:12:08,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72091 states. [2024-11-24 02:12:09,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72091 to 39663. [2024-11-24 02:12:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39663 states, 39662 states have (on average 1.4211587917906308) internal successors, (56366), 39662 states have internal predecessors, (56366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39663 states to 39663 states and 56366 transitions. [2024-11-24 02:12:09,936 INFO L78 Accepts]: Start accepts. Automaton has 39663 states and 56366 transitions. Word has length 112 [2024-11-24 02:12:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:09,936 INFO L471 AbstractCegarLoop]: Abstraction has 39663 states and 56366 transitions. [2024-11-24 02:12:09,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 39663 states and 56366 transitions. [2024-11-24 02:12:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 02:12:09,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:09,942 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:09,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 02:12:09,942 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:09,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:09,943 INFO L85 PathProgramCache]: Analyzing trace with hash -522920382, now seen corresponding path program 1 times [2024-11-24 02:12:09,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:09,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087813504] [2024-11-24 02:12:09,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:09,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 02:12:10,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087813504] [2024-11-24 02:12:10,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087813504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:10,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:10,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:12:10,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775101355] [2024-11-24 02:12:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:10,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:12:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:10,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:12:10,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:12:10,201 INFO L87 Difference]: Start difference. First operand 39663 states and 56366 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:10,673 INFO L93 Difference]: Finished difference Result 89693 states and 128117 transitions. [2024-11-24 02:12:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:12:10,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-11-24 02:12:10,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:11,038 INFO L225 Difference]: With dead ends: 89693 [2024-11-24 02:12:11,038 INFO L226 Difference]: Without dead ends: 80891 [2024-11-24 02:12:11,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-24 02:12:11,050 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 1267 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:11,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1352 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 02:12:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80891 states. [2024-11-24 02:12:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80891 to 48463. [2024-11-24 02:12:11,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48463 states, 48462 states have (on average 1.4212785275060873) internal successors, (68878), 48462 states have internal predecessors, (68878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:11,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48463 states to 48463 states and 68878 transitions. [2024-11-24 02:12:11,923 INFO L78 Accepts]: Start accepts. Automaton has 48463 states and 68878 transitions. Word has length 112 [2024-11-24 02:12:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:11,923 INFO L471 AbstractCegarLoop]: Abstraction has 48463 states and 68878 transitions. [2024-11-24 02:12:11,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:11,923 INFO L276 IsEmpty]: Start isEmpty. Operand 48463 states and 68878 transitions. [2024-11-24 02:12:11,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 02:12:11,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:11,930 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:11,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 02:12:11,930 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:11,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:11,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1413953610, now seen corresponding path program 1 times [2024-11-24 02:12:11,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:11,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104001767] [2024-11-24 02:12:11,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:11,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-24 02:12:12,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:12,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104001767] [2024-11-24 02:12:12,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104001767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:12,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:12,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:12:12,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269825938] [2024-11-24 02:12:12,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:12,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:12:12,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:12,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:12:12,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:12:12,186 INFO L87 Difference]: Start difference. First operand 48463 states and 68878 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:12,842 INFO L93 Difference]: Finished difference Result 98493 states and 140629 transitions. [2024-11-24 02:12:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:12:12,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 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 112 [2024-11-24 02:12:12,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:12,968 INFO L225 Difference]: With dead ends: 98493 [2024-11-24 02:12:12,968 INFO L226 Difference]: Without dead ends: 89691 [2024-11-24 02:12:12,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-24 02:12:12,991 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 1373 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:12,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1440 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:12:13,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89691 states. [2024-11-24 02:12:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89691 to 57263. [2024-11-24 02:12:14,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57263 states, 57262 states have (on average 1.4213614613530787) internal successors, (81390), 57262 states have internal predecessors, (81390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57263 states to 57263 states and 81390 transitions. [2024-11-24 02:12:14,425 INFO L78 Accepts]: Start accepts. Automaton has 57263 states and 81390 transitions. Word has length 112 [2024-11-24 02:12:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:14,426 INFO L471 AbstractCegarLoop]: Abstraction has 57263 states and 81390 transitions. [2024-11-24 02:12:14,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 57263 states and 81390 transitions. [2024-11-24 02:12:14,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-24 02:12:14,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:14,434 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:14,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 02:12:14,434 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:14,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:14,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1782817293, now seen corresponding path program 1 times [2024-11-24 02:12:14,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:14,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189855673] [2024-11-24 02:12:14,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:14,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 02:12:14,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:14,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189855673] [2024-11-24 02:12:14,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189855673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:14,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:14,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:12:14,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433582336] [2024-11-24 02:12:14,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:14,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:12:14,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:14,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:12:14,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:12:14,681 INFO L87 Difference]: Start difference. First operand 57263 states and 81390 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:15,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:15,157 INFO L93 Difference]: Finished difference Result 101725 states and 145333 transitions. [2024-11-24 02:12:15,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 02:12:15,157 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-24 02:12:15,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:15,598 INFO L225 Difference]: With dead ends: 101725 [2024-11-24 02:12:15,599 INFO L226 Difference]: Without dead ends: 95707 [2024-11-24 02:12:15,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-24 02:12:15,612 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 1368 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:15,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1334 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:12:15,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95707 states. [2024-11-24 02:12:16,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95707 to 63279. [2024-11-24 02:12:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63279 states, 63278 states have (on average 1.4227693669205728) internal successors, (90030), 63278 states have internal predecessors, (90030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:16,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63279 states to 63279 states and 90030 transitions. [2024-11-24 02:12:16,600 INFO L78 Accepts]: Start accepts. Automaton has 63279 states and 90030 transitions. Word has length 113 [2024-11-24 02:12:16,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:16,600 INFO L471 AbstractCegarLoop]: Abstraction has 63279 states and 90030 transitions. [2024-11-24 02:12:16,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:16,600 INFO L276 IsEmpty]: Start isEmpty. Operand 63279 states and 90030 transitions. [2024-11-24 02:12:16,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-24 02:12:16,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:16,608 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:16,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 02:12:16,608 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:16,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1645382406, now seen corresponding path program 1 times [2024-11-24 02:12:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:16,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51190428] [2024-11-24 02:12:16,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:16,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:17,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51190428] [2024-11-24 02:12:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51190428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:12:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128351809] [2024-11-24 02:12:17,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:17,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:12:17,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:12:17,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:12:17,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 02:12:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:17,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 02:12:17,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:12:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:17,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:12:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:18,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128351809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:12:18,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:12:18,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 18 [2024-11-24 02:12:18,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113168089] [2024-11-24 02:12:18,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:12:18,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 02:12:18,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:18,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 02:12:18,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-24 02:12:18,653 INFO L87 Difference]: Start difference. First operand 63279 states and 90030 transitions. Second operand has 18 states, 18 states have (on average 18.444444444444443) internal successors, (332), 18 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:27,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:27,705 INFO L93 Difference]: Finished difference Result 671284 states and 953366 transitions. [2024-11-24 02:12:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-24 02:12:27,706 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 18.444444444444443) internal successors, (332), 18 states have internal predecessors, (332), 0 states have call successors, (0), 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 114 [2024-11-24 02:12:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:28,467 INFO L225 Difference]: With dead ends: 671284 [2024-11-24 02:12:28,467 INFO L226 Difference]: Without dead ends: 603570 [2024-11-24 02:12:28,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4962 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2003, Invalid=10879, Unknown=0, NotChecked=0, Total=12882 [2024-11-24 02:12:28,567 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 6336 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 3417 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6336 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 3519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-24 02:12:28,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6336 Valid, 2507 Invalid, 3519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3417 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-24 02:12:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603570 states. [2024-11-24 02:12:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603570 to 509727. [2024-11-24 02:12:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509727 states, 509726 states have (on average 1.4012822575265926) internal successors, (714270), 509726 states have internal predecessors, (714270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509727 states to 509727 states and 714270 transitions. [2024-11-24 02:12:38,789 INFO L78 Accepts]: Start accepts. Automaton has 509727 states and 714270 transitions. Word has length 114 [2024-11-24 02:12:38,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:38,789 INFO L471 AbstractCegarLoop]: Abstraction has 509727 states and 714270 transitions. [2024-11-24 02:12:38,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.444444444444443) internal successors, (332), 18 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:38,789 INFO L276 IsEmpty]: Start isEmpty. Operand 509727 states and 714270 transitions. [2024-11-24 02:12:38,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-24 02:12:38,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:38,798 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:38,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 02:12:38,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 02:12:38,999 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:38,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:38,999 INFO L85 PathProgramCache]: Analyzing trace with hash -312944980, now seen corresponding path program 1 times [2024-11-24 02:12:39,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:39,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461043156] [2024-11-24 02:12:39,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:39,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:39,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:39,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461043156] [2024-11-24 02:12:39,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461043156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:12:39,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:12:39,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:12:39,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069234972] [2024-11-24 02:12:39,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:12:39,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:12:39,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:12:39,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:12:39,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:12:39,155 INFO L87 Difference]: Start difference. First operand 509727 states and 714270 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:12:42,420 INFO L93 Difference]: Finished difference Result 868693 states and 1219438 transitions. [2024-11-24 02:12:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:12:42,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2024-11-24 02:12:42,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:12:42,792 INFO L225 Difference]: With dead ends: 868693 [2024-11-24 02:12:42,793 INFO L226 Difference]: Without dead ends: 359011 [2024-11-24 02:12:42,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:12:42,910 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 69 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 338 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 [2024-11-24 02:12:42,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 338 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:12:43,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359011 states. [2024-11-24 02:12:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359011 to 348049. [2024-11-24 02:12:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348049 states, 348048 states have (on average 1.3963390107111662) internal successors, (485993), 348048 states have internal predecessors, (485993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:48,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348049 states to 348049 states and 485993 transitions. [2024-11-24 02:12:48,326 INFO L78 Accepts]: Start accepts. Automaton has 348049 states and 485993 transitions. Word has length 114 [2024-11-24 02:12:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:12:48,327 INFO L471 AbstractCegarLoop]: Abstraction has 348049 states and 485993 transitions. [2024-11-24 02:12:48,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:12:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 348049 states and 485993 transitions. [2024-11-24 02:12:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-24 02:12:48,329 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:12:48,329 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:12:48,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 02:12:48,330 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:12:48,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:12:48,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1668319829, now seen corresponding path program 1 times [2024-11-24 02:12:48,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:12:48,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113701059] [2024-11-24 02:12:48,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:48,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:12:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:12:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:12:49,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:12:49,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113701059] [2024-11-24 02:12:49,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113701059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:12:49,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954208170] [2024-11-24 02:12:49,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:12:49,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:12:49,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:12:49,118 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:12:49,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37ce59b8-5912-44e4-9bef-6031242253d9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process