./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label49.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_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/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_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label49.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/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_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/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 4dab15ca8d564215247ed99810908aedd9e5c3b287c9c31800ebdafb000d0f0d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:18:26,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:18:26,455 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:18:26,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:18:26,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:18:26,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:18:26,505 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:18:26,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:18:26,506 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:18:26,507 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:18:26,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:18:26,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:18:26,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:18:26,508 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:18:26,509 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:18:26,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:18:26,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:18:26,510 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:18:26,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:18:26,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:18:26,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:18:26,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:18:26,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:18:26,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:18:26,510 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:18:26,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:18:26,511 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:18:26,511 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:18:26,511 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:18:26,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:18:26,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:18:26,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:18:26,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:18:26,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:18:26,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:18:26,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:18:26,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:18:26,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:18:26,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:18:26,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:18:26,512 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:18:26,512 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:18:26,512 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:18:26,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:18:26,512 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:18:26,512 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:18:26,512 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:18:26,512 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:18:26,513 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_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/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 -> 4dab15ca8d564215247ed99810908aedd9e5c3b287c9c31800ebdafb000d0f0d [2024-11-28 05:18:26,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:18:26,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:18:26,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:18:26,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:18:26,843 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:18:26,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem19_label49.c [2024-11-28 05:18:29,808 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/data/9dde97339/78dd7145fd5e4fa887c6f2a9c63683e6/FLAG04ecb7ddd [2024-11-28 05:18:30,707 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:18:30,708 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/sv-benchmarks/c/eca-rers2012/Problem19_label49.c [2024-11-28 05:18:30,776 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/data/9dde97339/78dd7145fd5e4fa887c6f2a9c63683e6/FLAG04ecb7ddd [2024-11-28 05:18:30,798 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/data/9dde97339/78dd7145fd5e4fa887c6f2a9c63683e6 [2024-11-28 05:18:30,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:18:30,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:18:30,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:18:30,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:18:30,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:18:30,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:18:30" (1/1) ... [2024-11-28 05:18:30,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304f3bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:30, skipping insertion in model container [2024-11-28 05:18:30,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:18:30" (1/1) ... [2024-11-28 05:18:31,040 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:18:31,396 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_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/sv-benchmarks/c/eca-rers2012/Problem19_label49.c[5659,5672] [2024-11-28 05:18:33,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:18:33,130 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:18:33,162 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_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/sv-benchmarks/c/eca-rers2012/Problem19_label49.c[5659,5672] [2024-11-28 05:18:34,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:18:34,266 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:18:34,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34 WrapperNode [2024-11-28 05:18:34,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:18:34,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:18:34,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:18:34,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:18:34,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:34,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:35,494 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9430 [2024-11-28 05:18:35,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:18:35,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:18:35,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:18:35,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:18:35,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:35,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:35,639 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:36,002 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 05:18:36,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:36,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:36,303 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:36,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:36,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:36,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:36,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:36,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:18:36,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:18:36,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:18:36,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:18:36,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (1/1) ... [2024-11-28 05:18:36,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:18:36,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:18:36,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:18:36,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:18:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:18:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:18:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:18:36,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:18:36,742 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:18:36,745 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:18:48,146 INFO L? ?]: Removed 1320 outVars from TransFormulas that were not future-live. [2024-11-28 05:18:48,147 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:18:48,217 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:18:48,221 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:18:48,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:18:48 BoogieIcfgContainer [2024-11-28 05:18:48,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:18:48,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:18:48,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:18:48,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:18:48,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:18:30" (1/3) ... [2024-11-28 05:18:48,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0aba96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:18:48, skipping insertion in model container [2024-11-28 05:18:48,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:18:34" (2/3) ... [2024-11-28 05:18:48,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0aba96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:18:48, skipping insertion in model container [2024-11-28 05:18:48,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:18:48" (3/3) ... [2024-11-28 05:18:48,235 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem19_label49.c [2024-11-28 05:18:48,254 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:18:48,258 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem19_label49.c that has 1 procedures, 1748 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:18:48,383 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:18:48,397 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;@64509625, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:18:48,397 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:18:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states 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 05:18:48,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 05:18:48,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:48,415 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] [2024-11-28 05:18:48,415 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:18:48,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:48,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1824112922, now seen corresponding path program 1 times [2024-11-28 05:18:48,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:18:48,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514037074] [2024-11-28 05:18:48,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:48,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:18:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:49,027 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 05:18:49,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:18:49,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514037074] [2024-11-28 05:18:49,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514037074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:18:49,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:18:49,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:18:49,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98184356] [2024-11-28 05:18:49,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:18:49,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:18:49,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:18:49,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:18:49,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:18:49,072 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 05:19:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:05,864 INFO L93 Difference]: Finished difference Result 6335 states and 12139 transitions. [2024-11-28 05:19:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:19:05,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-28 05:19:05,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:05,907 INFO L225 Difference]: With dead ends: 6335 [2024-11-28 05:19:05,907 INFO L226 Difference]: Without dead ends: 4520 [2024-11-28 05:19:05,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 05:19:05,919 INFO L435 NwaCegarLoop]: 1911 mSDtfsCounter, 4270 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 11295 mSolverCounterSat, 2249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4270 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 13544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2249 IncrementalHoareTripleChecker+Valid, 11295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:05,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4270 Valid, 2185 Invalid, 13544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2249 Valid, 11295 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2024-11-28 05:19:05,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2024-11-28 05:19:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4469. [2024-11-28 05:19:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 1.5980304386750224) internal successors, (7140), 4468 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states 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 05:19:06,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7140 transitions. [2024-11-28 05:19:06,121 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7140 transitions. Word has length 42 [2024-11-28 05:19:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:06,123 INFO L471 AbstractCegarLoop]: Abstraction has 4469 states and 7140 transitions. [2024-11-28 05:19:06,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 05:19:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7140 transitions. [2024-11-28 05:19:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-28 05:19:06,130 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:06,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:06,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:19:06,132 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:06,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:06,133 INFO L85 PathProgramCache]: Analyzing trace with hash -350196237, now seen corresponding path program 1 times [2024-11-28 05:19:06,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:06,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824548080] [2024-11-28 05:19:06,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:06,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:07,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:07,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824548080] [2024-11-28 05:19:07,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824548080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:07,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:07,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:19:07,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116764880] [2024-11-28 05:19:07,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:07,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:19:07,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:07,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:19:07,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:19:07,612 INFO L87 Difference]: Start difference. First operand 4469 states and 7140 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 05:19:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:15,448 INFO L93 Difference]: Finished difference Result 7602 states and 12932 transitions. [2024-11-28 05:19:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:19:15,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 277 [2024-11-28 05:19:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:15,479 INFO L225 Difference]: With dead ends: 7602 [2024-11-28 05:19:15,480 INFO L226 Difference]: Without dead ends: 4469 [2024-11-28 05:19:15,484 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 05:19:15,485 INFO L435 NwaCegarLoop]: 1771 mSDtfsCounter, 1151 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5716 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 5724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:15,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1950 Invalid, 5724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5716 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-28 05:19:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2024-11-28 05:19:15,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4469. [2024-11-28 05:19:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 1.596016114592659) internal successors, (7131), 4468 states have internal predecessors, (7131), 0 states have call successors, (0), 0 states 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 05:19:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7131 transitions. [2024-11-28 05:19:15,594 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7131 transitions. Word has length 277 [2024-11-28 05:19:15,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:15,595 INFO L471 AbstractCegarLoop]: Abstraction has 4469 states and 7131 transitions. [2024-11-28 05:19:15,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 05:19:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7131 transitions. [2024-11-28 05:19:15,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-28 05:19:15,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:15,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:15,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:19:15,615 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:15,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:15,621 INFO L85 PathProgramCache]: Analyzing trace with hash -695176404, now seen corresponding path program 1 times [2024-11-28 05:19:15,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:15,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036533272] [2024-11-28 05:19:15,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:15,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:17,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:17,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036533272] [2024-11-28 05:19:17,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036533272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:19:17,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578858766] [2024-11-28 05:19:17,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:17,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:17,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:19:17,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:19:17,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:19:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:17,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:19:17,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:19:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 05:19:18,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:19:18,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578858766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:18,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:19:18,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-28 05:19:18,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393028423] [2024-11-28 05:19:18,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:18,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:19:18,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:18,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:19:18,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:19:18,447 INFO L87 Difference]: Start difference. First operand 4469 states and 7131 transitions. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 05:19:25,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:25,733 INFO L93 Difference]: Finished difference Result 10339 states and 18164 transitions. [2024-11-28 05:19:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:19:25,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 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 529 [2024-11-28 05:19:25,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:25,760 INFO L225 Difference]: With dead ends: 10339 [2024-11-28 05:19:25,760 INFO L226 Difference]: Without dead ends: 7237 [2024-11-28 05:19:25,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:19:25,767 INFO L435 NwaCegarLoop]: 1209 mSDtfsCounter, 1058 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4577 mSolverCounterSat, 1050 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 5627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 4577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:25,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1387 Invalid, 5627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 4577 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-28 05:19:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7237 states. [2024-11-28 05:19:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7237 to 7236. [2024-11-28 05:19:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 1.520110573600553) internal successors, (10998), 7235 states have internal predecessors, (10998), 0 states have call successors, (0), 0 states 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 05:19:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 10998 transitions. [2024-11-28 05:19:25,920 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 10998 transitions. Word has length 529 [2024-11-28 05:19:25,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:25,922 INFO L471 AbstractCegarLoop]: Abstraction has 7236 states and 10998 transitions. [2024-11-28 05:19:25,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 05:19:25,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 10998 transitions. [2024-11-28 05:19:25,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-28 05:19:25,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:25,936 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:25,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:19:26,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:26,140 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:26,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:26,142 INFO L85 PathProgramCache]: Analyzing trace with hash -362360471, now seen corresponding path program 1 times [2024-11-28 05:19:26,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:26,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265100508] [2024-11-28 05:19:26,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:26,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-28 05:19:26,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265100508] [2024-11-28 05:19:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265100508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:26,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:26,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:19:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892267088] [2024-11-28 05:19:26,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:26,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:19:26,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:26,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:19:26,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:19:26,877 INFO L87 Difference]: Start difference. First operand 7236 states and 10998 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 05:19:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:34,040 INFO L93 Difference]: Finished difference Result 15842 states and 24470 transitions. [2024-11-28 05:19:34,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:19:34,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 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 594 [2024-11-28 05:19:34,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:34,076 INFO L225 Difference]: With dead ends: 15842 [2024-11-28 05:19:34,076 INFO L226 Difference]: Without dead ends: 9973 [2024-11-28 05:19:34,084 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 05:19:34,087 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 1396 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 5598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:34,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 754 Invalid, 5598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-28 05:19:34,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2024-11-28 05:19:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9969. [2024-11-28 05:19:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.390048154093098) internal successors, (13856), 9968 states have internal predecessors, (13856), 0 states have call successors, (0), 0 states 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 05:19:34,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 13856 transitions. [2024-11-28 05:19:34,298 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 13856 transitions. Word has length 594 [2024-11-28 05:19:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:34,301 INFO L471 AbstractCegarLoop]: Abstraction has 9969 states and 13856 transitions. [2024-11-28 05:19:34,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 05:19:34,301 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 13856 transitions. [2024-11-28 05:19:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2024-11-28 05:19:34,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:34,331 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:34,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:19:34,331 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:34,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2047602111, now seen corresponding path program 1 times [2024-11-28 05:19:34,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:34,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721556064] [2024-11-28 05:19:34,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:34,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-28 05:19:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:35,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721556064] [2024-11-28 05:19:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721556064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:19:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450256339] [2024-11-28 05:19:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:35,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:19:35,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:35,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:19:35,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:19:35,128 INFO L87 Difference]: Start difference. First operand 9969 states and 13856 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 05:19:43,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:43,983 INFO L93 Difference]: Finished difference Result 26951 states and 38550 transitions. [2024-11-28 05:19:43,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:19:43,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 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 618 [2024-11-28 05:19:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:44,029 INFO L225 Difference]: With dead ends: 26951 [2024-11-28 05:19:44,029 INFO L226 Difference]: Without dead ends: 18349 [2024-11-28 05:19:44,039 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 05:19:44,040 INFO L435 NwaCegarLoop]: 1330 mSDtfsCounter, 1361 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 4185 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 5615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:44,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 1600 Invalid, 5615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4185 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-28 05:19:44,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18349 states. [2024-11-28 05:19:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 18334. [2024-11-28 05:19:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18334 states, 18333 states have (on average 1.2809687448862705) internal successors, (23484), 18333 states have internal predecessors, (23484), 0 states have call successors, (0), 0 states 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 05:19:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18334 states to 18334 states and 23484 transitions. [2024-11-28 05:19:44,338 INFO L78 Accepts]: Start accepts. Automaton has 18334 states and 23484 transitions. Word has length 618 [2024-11-28 05:19:44,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:44,339 INFO L471 AbstractCegarLoop]: Abstraction has 18334 states and 23484 transitions. [2024-11-28 05:19:44,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 05:19:44,340 INFO L276 IsEmpty]: Start isEmpty. Operand 18334 states and 23484 transitions. [2024-11-28 05:19:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2024-11-28 05:19:44,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:44,348 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:44,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:19:44,348 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:44,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:44,351 INFO L85 PathProgramCache]: Analyzing trace with hash 108929792, now seen corresponding path program 1 times [2024-11-28 05:19:44,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:44,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7101187] [2024-11-28 05:19:44,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:44,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:45,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:45,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7101187] [2024-11-28 05:19:45,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7101187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:45,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:45,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:19:45,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435059268] [2024-11-28 05:19:45,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:45,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:19:45,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:45,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:19:45,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:19:45,801 INFO L87 Difference]: Start difference. First operand 18334 states and 23484 transitions. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 05:19:59,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:59,325 INFO L93 Difference]: Finished difference Result 42164 states and 53383 transitions. [2024-11-28 05:19:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:19:59,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 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 633 [2024-11-28 05:19:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:59,389 INFO L225 Difference]: With dead ends: 42164 [2024-11-28 05:19:59,389 INFO L226 Difference]: Without dead ends: 25171 [2024-11-28 05:19:59,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:19:59,409 INFO L435 NwaCegarLoop]: 1658 mSDtfsCounter, 2256 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 11571 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 11983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 11571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:59,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2256 Valid, 2033 Invalid, 11983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [412 Valid, 11571 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2024-11-28 05:19:59,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25171 states. [2024-11-28 05:19:59,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25171 to 25166. [2024-11-28 05:20:00,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25165 states have (on average 1.2144247963441288) internal successors, (30561), 25165 states have internal predecessors, (30561), 0 states have call successors, (0), 0 states 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 05:20:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 30561 transitions. [2024-11-28 05:20:00,075 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 30561 transitions. Word has length 633 [2024-11-28 05:20:00,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:00,078 INFO L471 AbstractCegarLoop]: Abstraction has 25166 states and 30561 transitions. [2024-11-28 05:20:00,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 05:20:00,079 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 30561 transitions. [2024-11-28 05:20:00,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2024-11-28 05:20:00,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:00,086 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:00,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:20:00,086 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:00,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash 699548916, now seen corresponding path program 1 times [2024-11-28 05:20:00,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:00,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810764786] [2024-11-28 05:20:00,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:00,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-28 05:20:02,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:02,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810764786] [2024-11-28 05:20:02,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810764786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:02,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:02,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:20:02,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839472717] [2024-11-28 05:20:02,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:02,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:02,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:02,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:02,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:02,060 INFO L87 Difference]: Start difference. First operand 25166 states and 30561 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 05:20:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:11,390 INFO L93 Difference]: Finished difference Result 47620 states and 60784 transitions. [2024-11-28 05:20:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:11,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 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 678 [2024-11-28 05:20:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:11,441 INFO L225 Difference]: With dead ends: 47620 [2024-11-28 05:20:11,441 INFO L226 Difference]: Without dead ends: 30653 [2024-11-28 05:20:11,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 05:20:11,455 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1817 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4017 mSolverCounterSat, 2017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 6034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2017 IncrementalHoareTripleChecker+Valid, 4017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:11,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 772 Invalid, 6034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2017 Valid, 4017 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-11-28 05:20:11,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30653 states. [2024-11-28 05:20:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30653 to 29281. [2024-11-28 05:20:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29281 states, 29280 states have (on average 1.2540983606557377) internal successors, (36720), 29280 states have internal predecessors, (36720), 0 states have call successors, (0), 0 states 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 05:20:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29281 states to 29281 states and 36720 transitions. [2024-11-28 05:20:11,912 INFO L78 Accepts]: Start accepts. Automaton has 29281 states and 36720 transitions. Word has length 678 [2024-11-28 05:20:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:11,914 INFO L471 AbstractCegarLoop]: Abstraction has 29281 states and 36720 transitions. [2024-11-28 05:20:11,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 05:20:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 29281 states and 36720 transitions. [2024-11-28 05:20:11,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2024-11-28 05:20:11,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:11,926 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:11,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:20:11,926 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:11,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:11,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1913122830, now seen corresponding path program 1 times [2024-11-28 05:20:11,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:11,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237339142] [2024-11-28 05:20:11,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:11,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-28 05:20:13,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237339142] [2024-11-28 05:20:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237339142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:13,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:13,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:20:13,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517168481] [2024-11-28 05:20:13,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:13,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:20:13,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:13,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:20:13,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:20:13,024 INFO L87 Difference]: Start difference. First operand 29281 states and 36720 transitions. Second operand has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states 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 05:20:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:27,201 INFO L93 Difference]: Finished difference Result 103746 states and 131352 transitions. [2024-11-28 05:20:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:20:27,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 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 893 [2024-11-28 05:20:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:27,302 INFO L225 Difference]: With dead ends: 103746 [2024-11-28 05:20:27,303 INFO L226 Difference]: Without dead ends: 75832 [2024-11-28 05:20:27,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 05:20:27,327 INFO L435 NwaCegarLoop]: 780 mSDtfsCounter, 3345 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 8847 mSolverCounterSat, 2984 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3345 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 11831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2984 IncrementalHoareTripleChecker+Valid, 8847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:27,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3345 Valid, 1050 Invalid, 11831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2984 Valid, 8847 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2024-11-28 05:20:27,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75832 states. [2024-11-28 05:20:28,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75832 to 74393. [2024-11-28 05:20:28,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74393 states, 74392 states have (on average 1.1997929884933864) internal successors, (89255), 74392 states have internal predecessors, (89255), 0 states have call successors, (0), 0 states 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 05:20:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74393 states to 74393 states and 89255 transitions. [2024-11-28 05:20:28,695 INFO L78 Accepts]: Start accepts. Automaton has 74393 states and 89255 transitions. Word has length 893 [2024-11-28 05:20:28,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:28,696 INFO L471 AbstractCegarLoop]: Abstraction has 74393 states and 89255 transitions. [2024-11-28 05:20:28,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states 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 05:20:28,696 INFO L276 IsEmpty]: Start isEmpty. Operand 74393 states and 89255 transitions. [2024-11-28 05:20:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2024-11-28 05:20:28,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:28,710 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:28,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:20:28,710 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:28,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:28,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1680144238, now seen corresponding path program 1 times [2024-11-28 05:20:28,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:28,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202340283] [2024-11-28 05:20:28,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:28,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 398 proven. 313 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 05:20:32,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:32,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202340283] [2024-11-28 05:20:32,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202340283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:32,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61828528] [2024-11-28 05:20:32,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:32,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:32,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:32,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:32,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:20:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:33,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:20:33,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2024-11-28 05:20:33,246 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:20:33,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61828528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:33,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:20:33,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-28 05:20:33,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966217245] [2024-11-28 05:20:33,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:33,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:33,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:33,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:33,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:20:33,250 INFO L87 Difference]: Start difference. First operand 74393 states and 89255 transitions. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 05:20:41,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:41,027 INFO L93 Difference]: Finished difference Result 152879 states and 186659 transitions. [2024-11-28 05:20:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:41,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 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 902 [2024-11-28 05:20:41,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:41,157 INFO L225 Difference]: With dead ends: 152879 [2024-11-28 05:20:41,158 INFO L226 Difference]: Without dead ends: 92145 [2024-11-28 05:20:41,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:20:41,409 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1663 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4657 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 5665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 4657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:41,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 764 Invalid, 5665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 4657 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-28 05:20:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92145 states. [2024-11-28 05:20:42,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92145 to 90775. [2024-11-28 05:20:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90775 states, 90774 states have (on average 1.1880824905810035) internal successors, (107847), 90774 states have internal predecessors, (107847), 0 states have call successors, (0), 0 states 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 05:20:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90775 states to 90775 states and 107847 transitions. [2024-11-28 05:20:42,788 INFO L78 Accepts]: Start accepts. Automaton has 90775 states and 107847 transitions. Word has length 902 [2024-11-28 05:20:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:42,789 INFO L471 AbstractCegarLoop]: Abstraction has 90775 states and 107847 transitions. [2024-11-28 05:20:42,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 05:20:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 90775 states and 107847 transitions. [2024-11-28 05:20:42,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2024-11-28 05:20:42,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:42,802 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:42,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:20:43,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:43,003 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:43,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2109439225, now seen corresponding path program 1 times [2024-11-28 05:20:43,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:43,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229498255] [2024-11-28 05:20:43,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 289 proven. 366 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-28 05:20:45,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:45,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229498255] [2024-11-28 05:20:45,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229498255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:45,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599839935] [2024-11-28 05:20:45,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:45,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:45,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:45,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:45,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:20:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:46,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:20:46,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-28 05:20:46,317 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:20:46,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599839935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:46,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:20:46,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 05:20:46,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64875258] [2024-11-28 05:20:46,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:46,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:46,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:46,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:46,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:20:46,320 INFO L87 Difference]: Start difference. First operand 90775 states and 107847 transitions. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states 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 05:20:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:54,437 INFO L93 Difference]: Finished difference Result 219886 states and 262083 transitions. [2024-11-28 05:20:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:54,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 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 902 [2024-11-28 05:20:54,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:54,566 INFO L225 Difference]: With dead ends: 219886 [2024-11-28 05:20:54,566 INFO L226 Difference]: Without dead ends: 130478 [2024-11-28 05:20:54,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:20:54,604 INFO L435 NwaCegarLoop]: 1300 mSDtfsCounter, 1560 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4222 mSolverCounterSat, 1741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 5963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1741 IncrementalHoareTripleChecker+Valid, 4222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:54,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 1428 Invalid, 5963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1741 Valid, 4222 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-28 05:20:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130478 states. [2024-11-28 05:20:55,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130478 to 129006. [2024-11-28 05:20:56,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129006 states, 129005 states have (on average 1.1510561606139298) internal successors, (148492), 129005 states have internal predecessors, (148492), 0 states have call successors, (0), 0 states 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 05:20:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129006 states to 129006 states and 148492 transitions. [2024-11-28 05:20:56,232 INFO L78 Accepts]: Start accepts. Automaton has 129006 states and 148492 transitions. Word has length 902 [2024-11-28 05:20:56,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:56,232 INFO L471 AbstractCegarLoop]: Abstraction has 129006 states and 148492 transitions. [2024-11-28 05:20:56,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states 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 05:20:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 129006 states and 148492 transitions. [2024-11-28 05:20:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2024-11-28 05:20:56,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:56,252 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:56,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:20:56,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:56,453 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:56,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash -883627158, now seen corresponding path program 1 times [2024-11-28 05:20:56,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:56,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343607639] [2024-11-28 05:20:56,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:56,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 646 proven. 129 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-28 05:20:58,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:58,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343607639] [2024-11-28 05:20:58,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343607639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:58,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064067491] [2024-11-28 05:20:58,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:58,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:58,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:58,721 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:58,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:20:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:59,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:20:59,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:00,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 915 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-28 05:21:00,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:21:00,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064067491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:00,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:21:00,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-28 05:21:00,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331231306] [2024-11-28 05:21:00,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:00,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:00,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:00,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:00,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:21:00,610 INFO L87 Difference]: Start difference. First operand 129006 states and 148492 transitions. Second operand has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states 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 05:21:10,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:10,885 INFO L93 Difference]: Finished difference Result 337165 states and 393118 transitions. [2024-11-28 05:21:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:10,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 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 1018 [2024-11-28 05:21:10,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:11,129 INFO L225 Difference]: With dead ends: 337165 [2024-11-28 05:21:11,129 INFO L226 Difference]: Without dead ends: 225912 [2024-11-28 05:21:11,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1017 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:21:11,177 INFO L435 NwaCegarLoop]: 687 mSDtfsCounter, 2378 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4039 mSolverCounterSat, 1466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 5505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1466 IncrementalHoareTripleChecker+Valid, 4039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:11,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 795 Invalid, 5505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1466 Valid, 4039 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-28 05:21:11,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225912 states. [2024-11-28 05:21:14,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225912 to 199975. [2024-11-28 05:21:14,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199975 states, 199974 states have (on average 1.1530548971366277) internal successors, (230581), 199974 states have internal predecessors, (230581), 0 states have call successors, (0), 0 states 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 05:21:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199975 states to 199975 states and 230581 transitions. [2024-11-28 05:21:15,393 INFO L78 Accepts]: Start accepts. Automaton has 199975 states and 230581 transitions. Word has length 1018 [2024-11-28 05:21:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:15,394 INFO L471 AbstractCegarLoop]: Abstraction has 199975 states and 230581 transitions. [2024-11-28 05:21:15,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states 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 05:21:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 199975 states and 230581 transitions. [2024-11-28 05:21:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2024-11-28 05:21:15,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:15,418 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:15,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:21:15,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:15,622 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:15,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:15,623 INFO L85 PathProgramCache]: Analyzing trace with hash 981094297, now seen corresponding path program 1 times [2024-11-28 05:21:15,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:15,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712652537] [2024-11-28 05:21:15,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:15,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 863 proven. 66 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-28 05:21:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712652537] [2024-11-28 05:21:18,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712652537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590191249] [2024-11-28 05:21:18,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:18,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:18,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:18,134 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:18,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:21:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:18,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:21:18,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 885 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-28 05:21:18,745 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:21:18,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590191249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:18,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:21:18,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 05:21:18,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260083907] [2024-11-28 05:21:18,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:18,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:18,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:18,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:18,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:21:18,748 INFO L87 Difference]: Start difference. First operand 199975 states and 230581 transitions. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 05:21:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:27,830 INFO L93 Difference]: Finished difference Result 398664 states and 459936 transitions. [2024-11-28 05:21:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:27,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 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 1057 [2024-11-28 05:21:27,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:28,072 INFO L225 Difference]: With dead ends: 398664 [2024-11-28 05:21:28,072 INFO L226 Difference]: Without dead ends: 201421 [2024-11-28 05:21:28,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1057 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 05:21:28,148 INFO L435 NwaCegarLoop]: 1679 mSDtfsCounter, 1382 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4914 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 5358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 4914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:28,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 1841 Invalid, 5358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 4914 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-28 05:21:28,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201421 states. [2024-11-28 05:21:30,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201421 to 201343. [2024-11-28 05:21:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201343 states, 201342 states have (on average 1.138306960296411) internal successors, (229189), 201342 states have internal predecessors, (229189), 0 states have call successors, (0), 0 states 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 05:21:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201343 states to 201343 states and 229189 transitions. [2024-11-28 05:21:31,487 INFO L78 Accepts]: Start accepts. Automaton has 201343 states and 229189 transitions. Word has length 1057 [2024-11-28 05:21:31,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:31,488 INFO L471 AbstractCegarLoop]: Abstraction has 201343 states and 229189 transitions. [2024-11-28 05:21:31,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 05:21:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 201343 states and 229189 transitions. [2024-11-28 05:21:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2024-11-28 05:21:31,507 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:31,508 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:31,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:21:31,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b4ac8c-7d0b-48aa-bb33-715dbbb529dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:31,708 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:31,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash 735657204, now seen corresponding path program 1 times [2024-11-28 05:21:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:31,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226254086] [2024-11-28 05:21:31,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:31,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-28 05:21:33,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:33,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226254086] [2024-11-28 05:21:33,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226254086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:33,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:33,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:21:33,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007651181] [2024-11-28 05:21:33,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:33,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:33,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:33,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:33,034 INFO L87 Difference]: Start difference. First operand 201343 states and 229189 transitions. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 05:21:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:40,750 INFO L93 Difference]: Finished difference Result 408144 states and 463983 transitions. [2024-11-28 05:21:40,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:40,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 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 1069 [2024-11-28 05:21:40,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:40,963 INFO L225 Difference]: With dead ends: 408144 [2024-11-28 05:21:40,963 INFO L226 Difference]: Without dead ends: 204071 [2024-11-28 05:21:41,029 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 05:21:41,029 INFO L435 NwaCegarLoop]: 2867 mSDtfsCounter, 1471 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 3662 mSolverCounterSat, 1255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 4917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1255 IncrementalHoareTripleChecker+Valid, 3662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:41,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 3046 Invalid, 4917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1255 Valid, 3662 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 05:21:41,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204071 states. [2024-11-28 05:21:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204071 to 199971. [2024-11-28 05:21:43,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199971 states, 199970 states have (on average 1.1108316247437116) internal successors, (222133), 199970 states have internal predecessors, (222133), 0 states have call successors, (0), 0 states 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 05:21:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199971 states to 199971 states and 222133 transitions. [2024-11-28 05:21:43,663 INFO L78 Accepts]: Start accepts. Automaton has 199971 states and 222133 transitions. Word has length 1069 [2024-11-28 05:21:43,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:43,664 INFO L471 AbstractCegarLoop]: Abstraction has 199971 states and 222133 transitions. [2024-11-28 05:21:43,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 05:21:43,665 INFO L276 IsEmpty]: Start isEmpty. Operand 199971 states and 222133 transitions. [2024-11-28 05:21:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2024-11-28 05:21:43,686 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:43,686 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:43,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:21:43,686 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:43,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:43,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1799774254, now seen corresponding path program 1 times [2024-11-28 05:21:43,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:43,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089161334] [2024-11-28 05:21:43,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:43,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 1033 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2024-11-28 05:21:44,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:44,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089161334] [2024-11-28 05:21:44,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089161334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:44,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:44,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:21:44,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452571271] [2024-11-28 05:21:44,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:44,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:44,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:44,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:44,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:44,869 INFO L87 Difference]: Start difference. First operand 199971 states and 222133 transitions. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states 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 05:21:55,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:55,494 INFO L93 Difference]: Finished difference Result 447792 states and 500777 transitions. [2024-11-28 05:21:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:55,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 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 1100 [2024-11-28 05:21:55,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:55,758 INFO L225 Difference]: With dead ends: 447792 [2024-11-28 05:21:55,758 INFO L226 Difference]: Without dead ends: 247822 [2024-11-28 05:21:55,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:55,829 INFO L435 NwaCegarLoop]: 2993 mSDtfsCounter, 1319 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 4928 mSolverCounterSat, 876 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 5804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 4928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:55,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 3160 Invalid, 5804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [876 Valid, 4928 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-28 05:21:56,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247822 states. [2024-11-28 05:21:58,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247822 to 246395. [2024-11-28 05:21:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246395 states, 246394 states have (on average 1.1027135401024375) internal successors, (271702), 246394 states have internal predecessors, (271702), 0 states have call successors, (0), 0 states 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 05:21:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246395 states to 246395 states and 271702 transitions. [2024-11-28 05:21:59,948 INFO L78 Accepts]: Start accepts. Automaton has 246395 states and 271702 transitions. Word has length 1100 [2024-11-28 05:21:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:59,949 INFO L471 AbstractCegarLoop]: Abstraction has 246395 states and 271702 transitions. [2024-11-28 05:21:59,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states 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 05:21:59,949 INFO L276 IsEmpty]: Start isEmpty. Operand 246395 states and 271702 transitions. [2024-11-28 05:21:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1137 [2024-11-28 05:21:59,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:59,960 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:59,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:21:59,960 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:59,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:59,961 INFO L85 PathProgramCache]: Analyzing trace with hash -179232052, now seen corresponding path program 1 times [2024-11-28 05:21:59,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:59,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263995508] [2024-11-28 05:21:59,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:59,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1709 backedges. 1079 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-28 05:22:01,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:01,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263995508] [2024-11-28 05:22:01,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263995508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:22:01,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:22:01,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:22:01,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586111558] [2024-11-28 05:22:01,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:22:01,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:22:01,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:01,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:22:01,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:22:01,226 INFO L87 Difference]: Start difference. First operand 246395 states and 271702 transitions. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states 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 05:22:15,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:22:15,998 INFO L93 Difference]: Finished difference Result 641572 states and 715768 transitions. [2024-11-28 05:22:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:22:15,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 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 1136 [2024-11-28 05:22:15,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:22:17,135 INFO L225 Difference]: With dead ends: 641572 [2024-11-28 05:22:17,135 INFO L226 Difference]: Without dead ends: 412931 [2024-11-28 05:22:17,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 05:22:17,193 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 3146 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 7633 mSolverCounterSat, 2642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 10275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2642 IncrementalHoareTripleChecker+Valid, 7633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:22:17,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3146 Valid, 1076 Invalid, 10275 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2642 Valid, 7633 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2024-11-28 05:22:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412931 states.