./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9eb211dff2d7d24fbef4856e0a2f1ba2134136f04d84e12518dc8b67ba1dd611 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:37:52,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:37:52,694 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:37:52,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:37:52,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:37:52,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:37:52,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:37:52,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:37:52,732 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:37:52,732 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:37:52,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:37:52,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:37:52,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:37:52,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:37:52,734 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:37:52,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:37:52,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:37:52,734 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:37:52,734 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:37:52,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:37:52,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:37:52,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:37:52,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:37:52,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:37:52,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:37:52,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:37:52,735 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:37:52,736 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:37:52,736 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:37:52,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:37:52,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:37:52,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:37:52,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:52,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:37:52,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:37:52,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:37:52,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:37:52,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:52,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:37:52,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:37:52,737 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:37:52,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:37:52,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:37:52,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:37:52,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:37:52,738 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:37:52,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:37:52,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:37:52,738 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_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb211dff2d7d24fbef4856e0a2f1ba2134136f04d84e12518dc8b67ba1dd611 [2024-11-28 02:37:53,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:37:53,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:37:53,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:37:53,028 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:37:53,028 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:37:53,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem03_label05.c [2024-11-28 02:37:55,915 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/data/ab0349faa/725b76d1d3aa4006ae78d08405367bff/FLAG5c162886e [2024-11-28 02:37:56,510 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:37:56,511 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/sv-benchmarks/c/eca-rers2012/Problem03_label05.c [2024-11-28 02:37:56,533 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/data/ab0349faa/725b76d1d3aa4006ae78d08405367bff/FLAG5c162886e [2024-11-28 02:37:56,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/data/ab0349faa/725b76d1d3aa4006ae78d08405367bff [2024-11-28 02:37:56,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:37:56,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:37:56,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:37:56,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:37:56,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:37:56,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:56" (1/1) ... [2024-11-28 02:37:56,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5801ec80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:56, skipping insertion in model container [2024-11-28 02:37:56,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:56" (1/1) ... [2024-11-28 02:37:56,658 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:37:57,430 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_ff0d1a7a-6172-44a9-98bc-0661368d3739/sv-benchmarks/c/eca-rers2012/Problem03_label05.c[55544,55557] [2024-11-28 02:37:57,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:37:57,516 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:37:57,875 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_ff0d1a7a-6172-44a9-98bc-0661368d3739/sv-benchmarks/c/eca-rers2012/Problem03_label05.c[55544,55557] [2024-11-28 02:37:57,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:37:57,925 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:37:57,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57 WrapperNode [2024-11-28 02:37:57,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:37:57,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:37:57,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:37:57,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:37:57,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:57,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,071 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-28 02:37:58,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:37:58,073 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:37:58,073 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:37:58,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:37:58,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,093 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,142 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]. [2024-11-28 02:37:58,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,207 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,255 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:37:58,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:37:58,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:37:58,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:37:58,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:58,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:58,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:37:58,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:37:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:37:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:37:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:37:58,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:37:58,459 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:37:58,461 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:38:01,389 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-28 02:38:01,390 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:38:01,424 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:38:01,424 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:38:01,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:38:01 BoogieIcfgContainer [2024-11-28 02:38:01,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:38:01,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:38:01,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:38:01,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:38:01,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:37:56" (1/3) ... [2024-11-28 02:38:01,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36be4c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:38:01, skipping insertion in model container [2024-11-28 02:38:01,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (2/3) ... [2024-11-28 02:38:01,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36be4c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:38:01, skipping insertion in model container [2024-11-28 02:38:01,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:38:01" (3/3) ... [2024-11-28 02:38:01,439 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem03_label05.c [2024-11-28 02:38:01,463 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:38:01,467 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label05.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:38:01,569 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:38:01,590 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;@6af94640, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:38:01,590 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:38:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:01,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 02:38:01,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:01,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:01,619 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:01,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash -684231142, now seen corresponding path program 1 times [2024-11-28 02:38:01,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:01,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274535341] [2024-11-28 02:38:01,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:38:02,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:02,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274535341] [2024-11-28 02:38:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274535341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:02,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:02,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:38:02,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559786942] [2024-11-28 02:38:02,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:02,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:38:02,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:02,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:38:02,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:02,822 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:04,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:04,739 INFO L93 Difference]: Finished difference Result 829 states and 1478 transitions. [2024-11-28 02:38:04,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:38:04,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2024-11-28 02:38:04,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:04,767 INFO L225 Difference]: With dead ends: 829 [2024-11-28 02:38:04,767 INFO L226 Difference]: Without dead ends: 463 [2024-11-28 02:38:04,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:04,778 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:04,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 127 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 02:38:04,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-28 02:38:04,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2024-11-28 02:38:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6183035714285714) internal successors, (725), 448 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:04,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 725 transitions. [2024-11-28 02:38:04,868 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 725 transitions. Word has length 158 [2024-11-28 02:38:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:04,869 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 725 transitions. [2024-11-28 02:38:04,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:04,873 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 725 transitions. [2024-11-28 02:38:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-28 02:38:04,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:04,882 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:04,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:38:04,882 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:04,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:04,883 INFO L85 PathProgramCache]: Analyzing trace with hash -905202966, now seen corresponding path program 1 times [2024-11-28 02:38:04,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:04,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340446255] [2024-11-28 02:38:04,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:04,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:38:05,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:05,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340446255] [2024-11-28 02:38:05,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340446255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:05,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:05,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:38:05,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493066218] [2024-11-28 02:38:05,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:05,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:38:05,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:05,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:38:05,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:05,446 INFO L87 Difference]: Start difference. First operand 449 states and 725 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:06,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:06,801 INFO L93 Difference]: Finished difference Result 1319 states and 2138 transitions. [2024-11-28 02:38:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:38:06,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2024-11-28 02:38:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:06,807 INFO L225 Difference]: With dead ends: 1319 [2024-11-28 02:38:06,807 INFO L226 Difference]: Without dead ends: 872 [2024-11-28 02:38:06,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:06,809 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:06,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 150 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:38:06,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-11-28 02:38:06,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 870. [2024-11-28 02:38:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2024-11-28 02:38:06,849 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 163 [2024-11-28 02:38:06,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:06,849 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2024-11-28 02:38:06,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:06,850 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2024-11-28 02:38:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-28 02:38:06,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:06,855 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:06,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:38:06,855 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:06,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash -978055840, now seen corresponding path program 1 times [2024-11-28 02:38:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:06,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484022833] [2024-11-28 02:38:06,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:38:07,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:07,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484022833] [2024-11-28 02:38:07,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484022833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:07,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:07,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:38:07,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758513697] [2024-11-28 02:38:07,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:07,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:38:07,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:07,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:38:07,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:07,373 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:08,724 INFO L93 Difference]: Finished difference Result 2554 states and 3869 transitions. [2024-11-28 02:38:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:38:08,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 178 [2024-11-28 02:38:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:08,738 INFO L225 Difference]: With dead ends: 2554 [2024-11-28 02:38:08,738 INFO L226 Difference]: Without dead ends: 1686 [2024-11-28 02:38:08,742 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 [2024-11-28 02:38:08,743 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 233 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:08,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 416 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:38:08,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2024-11-28 02:38:08,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2024-11-28 02:38:08,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3368983957219251) internal successors, (2250), 1683 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2250 transitions. [2024-11-28 02:38:08,819 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2250 transitions. Word has length 178 [2024-11-28 02:38:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:08,820 INFO L471 AbstractCegarLoop]: Abstraction has 1684 states and 2250 transitions. [2024-11-28 02:38:08,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:08,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2250 transitions. [2024-11-28 02:38:08,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-28 02:38:08,829 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:08,829 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:08,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:38:08,830 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:08,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1440789059, now seen corresponding path program 1 times [2024-11-28 02:38:08,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:08,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016782795] [2024-11-28 02:38:08,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:08,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:38:09,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:09,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016782795] [2024-11-28 02:38:09,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016782795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:09,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:09,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:38:09,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975704409] [2024-11-28 02:38:09,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:09,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:38:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:09,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:38:09,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:09,331 INFO L87 Difference]: Start difference. First operand 1684 states and 2250 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:10,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:10,661 INFO L93 Difference]: Finished difference Result 5003 states and 6689 transitions. [2024-11-28 02:38:10,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:38:10,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2024-11-28 02:38:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:10,676 INFO L225 Difference]: With dead ends: 5003 [2024-11-28 02:38:10,676 INFO L226 Difference]: Without dead ends: 3321 [2024-11-28 02:38:10,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:10,683 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 239 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:10,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 173 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 02:38:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2024-11-28 02:38:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 3320. [2024-11-28 02:38:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3319 states have (on average 1.2847243145525762) internal successors, (4264), 3319 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 4264 transitions. [2024-11-28 02:38:10,783 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 4264 transitions. Word has length 181 [2024-11-28 02:38:10,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:10,784 INFO L471 AbstractCegarLoop]: Abstraction has 3320 states and 4264 transitions. [2024-11-28 02:38:10,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:10,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 4264 transitions. [2024-11-28 02:38:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-28 02:38:10,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:10,793 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:10,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:38:10,794 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:10,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:10,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1418110712, now seen corresponding path program 1 times [2024-11-28 02:38:10,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:10,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953828755] [2024-11-28 02:38:10,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:10,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:38:11,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:11,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953828755] [2024-11-28 02:38:11,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953828755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:11,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:11,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:38:11,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883806378] [2024-11-28 02:38:11,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:11,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:38:11,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:11,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:38:11,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:11,421 INFO L87 Difference]: Start difference. First operand 3320 states and 4264 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:12,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:12,800 INFO L93 Difference]: Finished difference Result 9900 states and 12717 transitions. [2024-11-28 02:38:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:38:12,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 193 [2024-11-28 02:38:12,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:12,825 INFO L225 Difference]: With dead ends: 9900 [2024-11-28 02:38:12,825 INFO L226 Difference]: Without dead ends: 6582 [2024-11-28 02:38:12,830 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 [2024-11-28 02:38:12,831 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:12,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 418 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:38:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2024-11-28 02:38:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 6577. [2024-11-28 02:38:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 6576 states have (on average 1.2244525547445255) internal successors, (8052), 6576 states have internal predecessors, (8052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 8052 transitions. [2024-11-28 02:38:13,073 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 8052 transitions. Word has length 193 [2024-11-28 02:38:13,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:13,074 INFO L471 AbstractCegarLoop]: Abstraction has 6577 states and 8052 transitions. [2024-11-28 02:38:13,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:13,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 8052 transitions. [2024-11-28 02:38:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-28 02:38:13,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:13,086 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:13,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:38:13,087 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:13,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:13,087 INFO L85 PathProgramCache]: Analyzing trace with hash -995724695, now seen corresponding path program 1 times [2024-11-28 02:38:13,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:13,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383857707] [2024-11-28 02:38:13,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:13,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:38:13,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:13,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383857707] [2024-11-28 02:38:13,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383857707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:13,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:13,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:38:13,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862143819] [2024-11-28 02:38:13,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:13,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:38:13,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:13,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:38:13,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:13,659 INFO L87 Difference]: Start difference. First operand 6577 states and 8052 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:15,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:15,043 INFO L93 Difference]: Finished difference Result 16215 states and 19822 transitions. [2024-11-28 02:38:15,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:38:15,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2024-11-28 02:38:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:15,083 INFO L225 Difference]: With dead ends: 16215 [2024-11-28 02:38:15,084 INFO L226 Difference]: Without dead ends: 9640 [2024-11-28 02:38:15,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:15,098 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 203 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:15,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 155 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:38:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9640 states. [2024-11-28 02:38:15,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9640 to 9638. [2024-11-28 02:38:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9638 states, 9637 states have (on average 1.2036940956729272) internal successors, (11600), 9637 states have internal predecessors, (11600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9638 states to 9638 states and 11600 transitions. [2024-11-28 02:38:15,335 INFO L78 Accepts]: Start accepts. Automaton has 9638 states and 11600 transitions. Word has length 199 [2024-11-28 02:38:15,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:15,337 INFO L471 AbstractCegarLoop]: Abstraction has 9638 states and 11600 transitions. [2024-11-28 02:38:15,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:15,338 INFO L276 IsEmpty]: Start isEmpty. Operand 9638 states and 11600 transitions. [2024-11-28 02:38:15,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-28 02:38:15,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:15,353 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:15,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:38:15,353 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:15,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:15,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1485253982, now seen corresponding path program 1 times [2024-11-28 02:38:15,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:15,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935967508] [2024-11-28 02:38:15,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:15,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:38:16,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:16,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935967508] [2024-11-28 02:38:16,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935967508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:38:16,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152550769] [2024-11-28 02:38:16,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:16,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:16,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:38:16,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:38:16,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:38:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:16,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:38:16,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:38:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:38:16,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:38:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152550769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:16,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:38:16,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 02:38:16,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917078339] [2024-11-28 02:38:16,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:16,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:38:16,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:16,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:38:16,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:38:16,878 INFO L87 Difference]: Start difference. First operand 9638 states and 11600 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 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) [2024-11-28 02:38:18,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:18,140 INFO L93 Difference]: Finished difference Result 19277 states and 23203 transitions. [2024-11-28 02:38:18,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:38:18,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 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) Word has length 206 [2024-11-28 02:38:18,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:18,188 INFO L225 Difference]: With dead ends: 19277 [2024-11-28 02:38:18,188 INFO L226 Difference]: Without dead ends: 9641 [2024-11-28 02:38:18,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:38:18,201 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 120 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:18,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 98 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 02:38:18,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9641 states. [2024-11-28 02:38:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9641 to 9638. [2024-11-28 02:38:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9638 states, 9637 states have (on average 1.1976756251945626) internal successors, (11542), 9637 states have internal predecessors, (11542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9638 states to 9638 states and 11542 transitions. [2024-11-28 02:38:18,454 INFO L78 Accepts]: Start accepts. Automaton has 9638 states and 11542 transitions. Word has length 206 [2024-11-28 02:38:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:18,455 INFO L471 AbstractCegarLoop]: Abstraction has 9638 states and 11542 transitions. [2024-11-28 02:38:18,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 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) [2024-11-28 02:38:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 9638 states and 11542 transitions. [2024-11-28 02:38:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 02:38:18,477 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:18,477 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:18,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:38:18,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:18,678 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:18,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1399495500, now seen corresponding path program 1 times [2024-11-28 02:38:18,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:18,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157820350] [2024-11-28 02:38:18,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:18,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 94 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 02:38:19,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:19,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157820350] [2024-11-28 02:38:19,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157820350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:38:19,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097845950] [2024-11-28 02:38:19,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:19,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:19,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:38:19,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:38:19,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:38:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:19,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:38:19,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:38:20,008 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:38:20,008 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:38:20,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097845950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:20,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:38:20,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 02:38:20,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247696652] [2024-11-28 02:38:20,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:20,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:38:20,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:20,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:38:20,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:38:20,016 INFO L87 Difference]: Start difference. First operand 9638 states and 11542 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:21,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:21,414 INFO L93 Difference]: Finished difference Result 23134 states and 28186 transitions. [2024-11-28 02:38:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:38:21,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2024-11-28 02:38:21,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:21,449 INFO L225 Difference]: With dead ends: 23134 [2024-11-28 02:38:21,449 INFO L226 Difference]: Without dead ends: 13498 [2024-11-28 02:38:21,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:38:21,459 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 186 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:21,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 166 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:38:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13498 states. [2024-11-28 02:38:21,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13498 to 13495. [2024-11-28 02:38:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13495 states, 13494 states have (on average 1.1723729064769528) internal successors, (15820), 13494 states have internal predecessors, (15820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 15820 transitions. [2024-11-28 02:38:21,760 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 15820 transitions. Word has length 267 [2024-11-28 02:38:21,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:21,760 INFO L471 AbstractCegarLoop]: Abstraction has 13495 states and 15820 transitions. [2024-11-28 02:38:21,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 15820 transitions. [2024-11-28 02:38:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-28 02:38:21,786 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:21,787 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:38:21,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:38:21,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:21,988 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:21,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:21,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2067850462, now seen corresponding path program 1 times [2024-11-28 02:38:21,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:21,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724407670] [2024-11-28 02:38:21,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:21,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 93 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 02:38:22,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724407670] [2024-11-28 02:38:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724407670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:38:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889774380] [2024-11-28 02:38:22,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:22,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:22,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:38:22,794 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:38:22,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:38:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:23,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:38:23,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:38:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 180 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:38:23,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:38:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 180 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:38:23,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889774380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:38:23,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:38:23,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2024-11-28 02:38:23,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10805073] [2024-11-28 02:38:23,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:38:23,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:38:23,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:23,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:38:23,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:38:23,516 INFO L87 Difference]: Start difference. First operand 13495 states and 15820 transitions. Second operand has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:30,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:30,753 INFO L93 Difference]: Finished difference Result 63938 states and 75433 transitions. [2024-11-28 02:38:30,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:38:30,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 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 283 [2024-11-28 02:38:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:30,968 INFO L225 Difference]: With dead ends: 63938 [2024-11-28 02:38:30,968 INFO L226 Difference]: Without dead ends: 50444 [2024-11-28 02:38:30,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:38:30,979 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 2931 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2931 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 5679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:30,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2931 Valid, 470 Invalid, 5679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [901 Valid, 4778 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-28 02:38:31,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50444 states. [2024-11-28 02:38:31,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50444 to 50198. [2024-11-28 02:38:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50198 states, 50197 states have (on average 1.1181743928920056) internal successors, (56129), 50197 states have internal predecessors, (56129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50198 states to 50198 states and 56129 transitions. [2024-11-28 02:38:32,022 INFO L78 Accepts]: Start accepts. Automaton has 50198 states and 56129 transitions. Word has length 283 [2024-11-28 02:38:32,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:32,027 INFO L471 AbstractCegarLoop]: Abstraction has 50198 states and 56129 transitions. [2024-11-28 02:38:32,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:32,027 INFO L276 IsEmpty]: Start isEmpty. Operand 50198 states and 56129 transitions. [2024-11-28 02:38:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-28 02:38:32,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:32,108 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:38:32,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:38:32,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:32,310 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:32,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:32,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1813611280, now seen corresponding path program 1 times [2024-11-28 02:38:32,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:32,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476634960] [2024-11-28 02:38:32,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:32,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:38:33,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:33,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476634960] [2024-11-28 02:38:33,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476634960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:33,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:33,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:38:33,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516928436] [2024-11-28 02:38:33,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:33,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:38:33,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:33,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:38:33,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:38:33,164 INFO L87 Difference]: Start difference. First operand 50198 states and 56129 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:34,824 INFO L93 Difference]: Finished difference Result 101612 states and 113566 transitions. [2024-11-28 02:38:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:38:34,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2024-11-28 02:38:34,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:34,926 INFO L225 Difference]: With dead ends: 101612 [2024-11-28 02:38:34,926 INFO L226 Difference]: Without dead ends: 51416 [2024-11-28 02:38:34,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:38:34,962 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 388 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:34,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 208 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:38:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51416 states. [2024-11-28 02:38:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51416 to 50198. [2024-11-28 02:38:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50198 states, 50197 states have (on average 1.1143893061338328) internal successors, (55939), 50197 states have internal predecessors, (55939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50198 states to 50198 states and 55939 transitions. [2024-11-28 02:38:36,091 INFO L78 Accepts]: Start accepts. Automaton has 50198 states and 55939 transitions. Word has length 291 [2024-11-28 02:38:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:36,091 INFO L471 AbstractCegarLoop]: Abstraction has 50198 states and 55939 transitions. [2024-11-28 02:38:36,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 50198 states and 55939 transitions. [2024-11-28 02:38:36,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-28 02:38:36,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:36,127 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:38:36,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:38:36,127 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:36,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2050499318, now seen corresponding path program 1 times [2024-11-28 02:38:36,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:36,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103749657] [2024-11-28 02:38:36,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:36,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 02:38:36,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:36,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103749657] [2024-11-28 02:38:36,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103749657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:38:36,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057732772] [2024-11-28 02:38:36,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:36,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:36,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:38:36,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:38:36,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:38:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:36,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:38:36,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:38:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 02:38:37,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:38:37,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057732772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:37,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:38:37,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 02:38:37,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106328549] [2024-11-28 02:38:37,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:37,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:38:37,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:37,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:38:37,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:38:37,124 INFO L87 Difference]: Start difference. First operand 50198 states and 55939 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:38,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:38,474 INFO L93 Difference]: Finished difference Result 153755 states and 171757 transitions. [2024-11-28 02:38:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:38:38,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 319 [2024-11-28 02:38:38,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:38,618 INFO L225 Difference]: With dead ends: 153755 [2024-11-28 02:38:38,618 INFO L226 Difference]: Without dead ends: 103559 [2024-11-28 02:38:38,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:38:38,659 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 800 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:38,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 408 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:38:38,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103559 states. [2024-11-28 02:38:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103559 to 103549. [2024-11-28 02:38:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103549 states, 103548 states have (on average 1.1168733341059218) internal successors, (115650), 103548 states have internal predecessors, (115650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103549 states to 103549 states and 115650 transitions. [2024-11-28 02:38:40,326 INFO L78 Accepts]: Start accepts. Automaton has 103549 states and 115650 transitions. Word has length 319 [2024-11-28 02:38:40,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:40,326 INFO L471 AbstractCegarLoop]: Abstraction has 103549 states and 115650 transitions. [2024-11-28 02:38:40,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:40,327 INFO L276 IsEmpty]: Start isEmpty. Operand 103549 states and 115650 transitions. [2024-11-28 02:38:40,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-28 02:38:40,395 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:40,396 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:38:40,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:38:40,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d1a7a-6172-44a9-98bc-0661368d3739/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:40,596 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:40,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:40,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1823072927, now seen corresponding path program 1 times [2024-11-28 02:38:40,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:40,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36260556] [2024-11-28 02:38:40,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:40,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 02:38:41,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:41,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36260556] [2024-11-28 02:38:41,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36260556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:41,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:41,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:38:41,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936875398] [2024-11-28 02:38:41,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:41,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:38:41,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:41,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:38:41,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:41,456 INFO L87 Difference]: Start difference. First operand 103549 states and 115650 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:43,114 INFO L93 Difference]: Finished difference Result 234943 states and 262650 transitions. [2024-11-28 02:38:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:38:43,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 351 [2024-11-28 02:38:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:43,263 INFO L225 Difference]: With dead ends: 234943 [2024-11-28 02:38:43,263 INFO L226 Difference]: Without dead ends: 131396 [2024-11-28 02:38:43,307 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 [2024-11-28 02:38:43,308 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 156 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:43,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 202 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:38:43,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131396 states. [2024-11-28 02:38:44,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131396 to 124886. [2024-11-28 02:38:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124886 states, 124885 states have (on average 1.1111502582375785) internal successors, (138766), 124885 states have internal predecessors, (138766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:45,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124886 states to 124886 states and 138766 transitions. [2024-11-28 02:38:45,193 INFO L78 Accepts]: Start accepts. Automaton has 124886 states and 138766 transitions. Word has length 351 [2024-11-28 02:38:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:45,193 INFO L471 AbstractCegarLoop]: Abstraction has 124886 states and 138766 transitions. [2024-11-28 02:38:45,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 124886 states and 138766 transitions. [2024-11-28 02:38:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-28 02:38:45,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:45,258 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:38:45,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:38:45,258 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:45,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash -667843246, now seen corresponding path program 1 times [2024-11-28 02:38:45,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:45,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056232327] [2024-11-28 02:38:45,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:45,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-28 02:38:45,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:45,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056232327] [2024-11-28 02:38:45,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056232327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:45,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:45,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:38:45,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947311027] [2024-11-28 02:38:45,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:45,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:38:45,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:45,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:38:45,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:38:45,829 INFO L87 Difference]: Start difference. First operand 124886 states and 138766 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:48,049 INFO L93 Difference]: Finished difference Result 358647 states and 398328 transitions. [2024-11-28 02:38:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:38:48,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 356 [2024-11-28 02:38:48,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:48,288 INFO L225 Difference]: With dead ends: 358647 [2024-11-28 02:38:48,288 INFO L226 Difference]: Without dead ends: 233763 [2024-11-28 02:38:48,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:38:48,357 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 550 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:48,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 398 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:38:48,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233763 states. [2024-11-28 02:38:51,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233763 to 233325. [2024-11-28 02:38:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233325 states, 233324 states have (on average 1.109500094289486) internal successors, (258873), 233324 states have internal predecessors, (258873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233325 states to 233325 states and 258873 transitions. [2024-11-28 02:38:51,980 INFO L78 Accepts]: Start accepts. Automaton has 233325 states and 258873 transitions. Word has length 356 [2024-11-28 02:38:51,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:51,981 INFO L471 AbstractCegarLoop]: Abstraction has 233325 states and 258873 transitions. [2024-11-28 02:38:51,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:51,981 INFO L276 IsEmpty]: Start isEmpty. Operand 233325 states and 258873 transitions. [2024-11-28 02:38:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-28 02:38:52,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:52,069 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:38:52,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:38:52,069 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:52,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:52,070 INFO L85 PathProgramCache]: Analyzing trace with hash -100472517, now seen corresponding path program 1 times [2024-11-28 02:38:52,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:52,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140950948] [2024-11-28 02:38:52,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:52,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 02:38:52,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:52,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140950948] [2024-11-28 02:38:52,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140950948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:52,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:52,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:38:52,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407828225] [2024-11-28 02:38:52,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:52,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:38:52,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:52,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:38:52,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:52,402 INFO L87 Difference]: Start difference. First operand 233325 states and 258873 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:54,620 INFO L93 Difference]: Finished difference Result 434639 states and 482596 transitions. [2024-11-28 02:38:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:38:54,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 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 399 [2024-11-28 02:38:54,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:54,821 INFO L225 Difference]: With dead ends: 434639 [2024-11-28 02:38:54,821 INFO L226 Difference]: Without dead ends: 201316 [2024-11-28 02:38:54,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:54,858 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 266 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:54,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:38:54,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201316 states. [2024-11-28 02:38:57,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201316 to 200098. [2024-11-28 02:38:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200098 states, 200097 states have (on average 1.1051789881907275) internal successors, (221143), 200097 states have internal predecessors, (221143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200098 states to 200098 states and 221143 transitions. [2024-11-28 02:38:57,647 INFO L78 Accepts]: Start accepts. Automaton has 200098 states and 221143 transitions. Word has length 399 [2024-11-28 02:38:57,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:57,647 INFO L471 AbstractCegarLoop]: Abstraction has 200098 states and 221143 transitions. [2024-11-28 02:38:57,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:38:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand 200098 states and 221143 transitions. [2024-11-28 02:38:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-28 02:38:58,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:58,237 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:38:58,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:38:58,237 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:58,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:58,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1029295365, now seen corresponding path program 1 times [2024-11-28 02:38:58,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:58,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355035684] [2024-11-28 02:38:58,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:58,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 02:38:58,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:58,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355035684] [2024-11-28 02:38:58,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355035684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:58,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:58,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:38:58,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253630732] [2024-11-28 02:38:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:58,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:38:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:58,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:38:58,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:38:58,513 INFO L87 Difference]: Start difference. First operand 200098 states and 221143 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:39:00,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:39:00,514 INFO L93 Difference]: Finished difference Result 425438 states and 471857 transitions. [2024-11-28 02:39:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:39:00,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 406 [2024-11-28 02:39:00,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:39:00,743 INFO L225 Difference]: With dead ends: 425438 [2024-11-28 02:39:00,743 INFO L226 Difference]: Without dead ends: 225342 [2024-11-28 02:39:00,809 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 [2024-11-28 02:39:00,810 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 201 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:39:00,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 159 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:39:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225342 states. [2024-11-28 02:39:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225342 to 218165. [2024-11-28 02:39:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218165 states, 218164 states have (on average 1.112818796868411) internal successors, (242777), 218164 states have internal predecessors, (242777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:39:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218165 states to 218165 states and 242777 transitions. [2024-11-28 02:39:04,258 INFO L78 Accepts]: Start accepts. Automaton has 218165 states and 242777 transitions. Word has length 406 [2024-11-28 02:39:04,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:39:04,258 INFO L471 AbstractCegarLoop]: Abstraction has 218165 states and 242777 transitions. [2024-11-28 02:39:04,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:39:04,258 INFO L276 IsEmpty]: Start isEmpty. Operand 218165 states and 242777 transitions. [2024-11-28 02:39:04,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-28 02:39:04,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:39:04,302 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:39:04,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:39:04,302 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:39:04,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:04,303 INFO L85 PathProgramCache]: Analyzing trace with hash -668361645, now seen corresponding path program 1 times [2024-11-28 02:39:04,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:39:04,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722611620] [2024-11-28 02:39:04,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:04,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:39:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-28 02:39:04,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:39:04,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722611620] [2024-11-28 02:39:04,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722611620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:04,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:04,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:39:04,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866771928] [2024-11-28 02:39:04,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:04,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:39:04,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:39:04,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:39:04,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:39:04,838 INFO L87 Difference]: Start difference. First operand 218165 states and 242777 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:39:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:39:07,993 INFO L93 Difference]: Finished difference Result 457120 states and 508980 transitions. [2024-11-28 02:39:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:39:07,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 412 [2024-11-28 02:39:07,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:39:08,246 INFO L225 Difference]: With dead ends: 457120 [2024-11-28 02:39:08,246 INFO L226 Difference]: Without dead ends: 238957 [2024-11-28 02:39:08,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:39:08,309 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 343 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:39:08,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 105 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:39:08,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238957 states.