./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3af6b76c8112c46f4f3f430659495baba58dab9f6300080b3889ede952fb5526 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:44:16,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:44:16,558 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:44:16,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:44:16,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:44:16,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:44:16,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:44:16,603 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:44:16,603 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:44:16,604 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:44:16,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:44:16,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:44:16,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:44:16,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:44:16,605 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:44:16,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:44:16,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:44:16,606 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:44:16,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:44:16,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:44:16,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:44:16,607 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:44:16,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:44:16,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:44:16,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:44:16,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:44:16,608 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:44:16,608 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:44:16,608 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:44:16,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:44:16,609 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:44:16,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:44:16,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:44:16,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:44:16,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:44:16,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:44:16,610 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:44:16,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:44:16,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:44:16,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:44:16,611 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:44:16,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:44:16,611 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:44:16,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:44:16,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:44:16,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:44:16,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:44:16,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:44:16,613 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_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3af6b76c8112c46f4f3f430659495baba58dab9f6300080b3889ede952fb5526 [2024-11-23 23:44:17,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:44:17,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:44:17,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:44:17,120 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:44:17,120 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:44:17,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-23 23:44:21,130 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/data/95c0c5151/deeee5908b4f43718db0419972ccdb8c/FLAG908de65d1 [2024-11-23 23:44:21,549 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:44:21,553 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-23 23:44:21,582 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/data/95c0c5151/deeee5908b4f43718db0419972ccdb8c/FLAG908de65d1 [2024-11-23 23:44:21,748 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/data/95c0c5151/deeee5908b4f43718db0419972ccdb8c [2024-11-23 23:44:21,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:44:21,753 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:44:21,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:44:21,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:44:21,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:44:21,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:44:21" (1/1) ... [2024-11-23 23:44:21,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57138c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:21, skipping insertion in model container [2024-11-23 23:44:21,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:44:21" (1/1) ... [2024-11-23 23:44:21,839 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:44:22,217 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_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7752,7765] [2024-11-23 23:44:22,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:44:22,283 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:44:22,353 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_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7752,7765] [2024-11-23 23:44:22,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:44:22,432 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:44:22,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22 WrapperNode [2024-11-23 23:44:22,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:44:22,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:44:22,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:44:22,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:44:22,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,538 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 670 [2024-11-23 23:44:22,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:44:22,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:44:22,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:44:22,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:44:22,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,558 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,581 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]. [2024-11-23 23:44:22,581 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,595 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,597 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,608 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,611 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,616 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:44:22,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:44:22,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:44:22,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:44:22,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (1/1) ... [2024-11-23 23:44:22,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:44:22,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:22,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:44:22,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57ca9dc-bb04-4bdc-9ebb-d34e7be3ad0f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:44:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:44:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:44:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:44:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:44:22,944 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:44:22,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:44:24,306 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-23 23:44:24,310 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:44:24,337 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:44:24,340 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 23:44:24,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:44:24 BoogieIcfgContainer [2024-11-23 23:44:24,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:44:24,344 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:44:24,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:44:24,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:44:24,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:44:21" (1/3) ... [2024-11-23 23:44:24,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaf542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:44:24, skipping insertion in model container [2024-11-23 23:44:24,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:22" (2/3) ... [2024-11-23 23:44:24,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaf542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:44:24, skipping insertion in model container [2024-11-23 23:44:24,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:44:24" (3/3) ... [2024-11-23 23:44:24,360 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-23 23:44:24,386 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:44:24,390 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 149 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-23 23:44:24,493 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:44:24,515 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;@6b73bcab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:44:24,515 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:44:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7346938775510203) internal successors, (255), 148 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:24,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 23:44:24,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:24,537 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:24,538 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:24,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:24,547 INFO L85 PathProgramCache]: Analyzing trace with hash -970283638, now seen corresponding path program 1 times [2024-11-23 23:44:24,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:24,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332758425] [2024-11-23 23:44:24,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:24,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:25,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:25,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332758425] [2024-11-23 23:44:25,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332758425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:25,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:25,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:44:25,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497896763] [2024-11-23 23:44:25,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:25,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:44:25,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:25,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:44:25,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:25,466 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7346938775510203) internal successors, (255), 148 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:25,660 INFO L93 Difference]: Finished difference Result 335 states and 559 transitions. [2024-11-23 23:44:25,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:44:25,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-23 23:44:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:25,680 INFO L225 Difference]: With dead ends: 335 [2024-11-23 23:44:25,683 INFO L226 Difference]: Without dead ends: 231 [2024-11-23 23:44:25,688 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 [2024-11-23 23:44:25,697 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 151 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:25,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 448 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:25,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-23 23:44:25,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2024-11-23 23:44:25,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.5814977973568283) internal successors, (359), 227 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 359 transitions. [2024-11-23 23:44:25,797 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 359 transitions. Word has length 56 [2024-11-23 23:44:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:25,797 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 359 transitions. [2024-11-23 23:44:25,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 359 transitions. [2024-11-23 23:44:25,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-23 23:44:25,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:25,804 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:25,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:44:25,805 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:25,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1615417163, now seen corresponding path program 1 times [2024-11-23 23:44:25,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:25,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586450920] [2024-11-23 23:44:25,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:25,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:26,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586450920] [2024-11-23 23:44:26,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586450920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:26,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:26,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:44:26,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824333423] [2024-11-23 23:44:26,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:26,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:44:26,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:26,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:44:26,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:26,199 INFO L87 Difference]: Start difference. First operand 228 states and 359 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:26,280 INFO L93 Difference]: Finished difference Result 566 states and 911 transitions. [2024-11-23 23:44:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:44:26,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-23 23:44:26,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:26,286 INFO L225 Difference]: With dead ends: 566 [2024-11-23 23:44:26,289 INFO L226 Difference]: Without dead ends: 389 [2024-11-23 23:44:26,291 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 [2024-11-23 23:44:26,294 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 133 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:26,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 424 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:26,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-23 23:44:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2024-11-23 23:44:26,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.5989583333333333) internal successors, (614), 384 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:26,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 614 transitions. [2024-11-23 23:44:26,348 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 614 transitions. Word has length 58 [2024-11-23 23:44:26,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:26,349 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 614 transitions. [2024-11-23 23:44:26,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:26,349 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 614 transitions. [2024-11-23 23:44:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-23 23:44:26,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:26,353 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:26,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:44:26,353 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:26,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:26,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1881805132, now seen corresponding path program 1 times [2024-11-23 23:44:26,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:26,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726285236] [2024-11-23 23:44:26,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:26,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:26,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:26,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726285236] [2024-11-23 23:44:26,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726285236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:26,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:26,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:44:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238075380] [2024-11-23 23:44:26,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:26,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:44:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:26,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:44:26,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:26,766 INFO L87 Difference]: Start difference. First operand 385 states and 614 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:26,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:26,846 INFO L93 Difference]: Finished difference Result 1021 states and 1648 transitions. [2024-11-23 23:44:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:44:26,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-11-23 23:44:26,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:26,852 INFO L225 Difference]: With dead ends: 1021 [2024-11-23 23:44:26,853 INFO L226 Difference]: Without dead ends: 687 [2024-11-23 23:44:26,855 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 [2024-11-23 23:44:26,856 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 127 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:26,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 425 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-23 23:44:26,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 681. [2024-11-23 23:44:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 1.6029411764705883) internal successors, (1090), 680 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1090 transitions. [2024-11-23 23:44:26,931 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1090 transitions. Word has length 60 [2024-11-23 23:44:26,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:26,932 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 1090 transitions. [2024-11-23 23:44:26,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1090 transitions. [2024-11-23 23:44:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 23:44:26,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:26,940 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:26,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:44:26,941 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:26,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:26,946 INFO L85 PathProgramCache]: Analyzing trace with hash 333047117, now seen corresponding path program 1 times [2024-11-23 23:44:26,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:26,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731870168] [2024-11-23 23:44:26,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:26,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:27,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:27,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731870168] [2024-11-23 23:44:27,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731870168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:27,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:27,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:27,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042998482] [2024-11-23 23:44:27,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:27,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:27,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:27,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:27,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:27,328 INFO L87 Difference]: Start difference. First operand 681 states and 1090 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:27,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:27,682 INFO L93 Difference]: Finished difference Result 2973 states and 4848 transitions. [2024-11-23 23:44:27,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:44:27,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2024-11-23 23:44:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:27,697 INFO L225 Difference]: With dead ends: 2973 [2024-11-23 23:44:27,697 INFO L226 Difference]: Without dead ends: 2343 [2024-11-23 23:44:27,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:44:27,700 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 1026 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:27,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1572 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:44:27,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2024-11-23 23:44:27,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 1233. [2024-11-23 23:44:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 1.6112012987012987) internal successors, (1985), 1232 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1985 transitions. [2024-11-23 23:44:27,773 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1985 transitions. Word has length 62 [2024-11-23 23:44:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:27,773 INFO L471 AbstractCegarLoop]: Abstraction has 1233 states and 1985 transitions. [2024-11-23 23:44:27,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:27,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1985 transitions. [2024-11-23 23:44:27,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 23:44:27,784 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:27,784 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:27,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:44:27,785 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:27,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1672021844, now seen corresponding path program 1 times [2024-11-23 23:44:27,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:27,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724261810] [2024-11-23 23:44:27,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:27,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:28,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:28,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724261810] [2024-11-23 23:44:28,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724261810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:28,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:28,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:44:28,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090645428] [2024-11-23 23:44:28,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:28,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:44:28,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:28,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:44:28,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:28,077 INFO L87 Difference]: Start difference. First operand 1233 states and 1985 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:28,265 INFO L93 Difference]: Finished difference Result 3613 states and 5881 transitions. [2024-11-23 23:44:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:44:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-11-23 23:44:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:28,283 INFO L225 Difference]: With dead ends: 3613 [2024-11-23 23:44:28,283 INFO L226 Difference]: Without dead ends: 2431 [2024-11-23 23:44:28,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:28,291 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 456 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:28,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 769 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:28,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2024-11-23 23:44:28,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1823. [2024-11-23 23:44:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 1.6169045005488474) internal successors, (2946), 1822 states have internal predecessors, (2946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2946 transitions. [2024-11-23 23:44:28,394 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2946 transitions. Word has length 63 [2024-11-23 23:44:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:28,395 INFO L471 AbstractCegarLoop]: Abstraction has 1823 states and 2946 transitions. [2024-11-23 23:44:28,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2946 transitions. [2024-11-23 23:44:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 23:44:28,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:28,398 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:28,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:44:28,399 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:28,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:28,399 INFO L85 PathProgramCache]: Analyzing trace with hash 235123444, now seen corresponding path program 1 times [2024-11-23 23:44:28,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:28,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631888003] [2024-11-23 23:44:28,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:28,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:28,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:28,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631888003] [2024-11-23 23:44:28,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631888003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:28,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:28,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:44:28,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27131463] [2024-11-23 23:44:28,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:28,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:44:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:28,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:44:28,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:28,675 INFO L87 Difference]: Start difference. First operand 1823 states and 2946 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:28,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:28,871 INFO L93 Difference]: Finished difference Result 5307 states and 8625 transitions. [2024-11-23 23:44:28,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:44:28,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-11-23 23:44:28,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:28,893 INFO L225 Difference]: With dead ends: 5307 [2024-11-23 23:44:28,893 INFO L226 Difference]: Without dead ends: 3535 [2024-11-23 23:44:28,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:28,900 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 456 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:28,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 711 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:28,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2024-11-23 23:44:28,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 2667. [2024-11-23 23:44:29,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2666 states have (on average 1.6151537884471119) internal successors, (4306), 2666 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 4306 transitions. [2024-11-23 23:44:29,019 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 4306 transitions. Word has length 64 [2024-11-23 23:44:29,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:29,020 INFO L471 AbstractCegarLoop]: Abstraction has 2667 states and 4306 transitions. [2024-11-23 23:44:29,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:29,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 4306 transitions. [2024-11-23 23:44:29,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 23:44:29,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:29,024 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:29,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:44:29,024 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:29,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:29,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1354495973, now seen corresponding path program 1 times [2024-11-23 23:44:29,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:29,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378289147] [2024-11-23 23:44:29,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:29,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:29,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:29,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378289147] [2024-11-23 23:44:29,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378289147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:29,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:29,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:44:29,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776874165] [2024-11-23 23:44:29,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:29,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:44:29,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:29,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:44:29,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:29,268 INFO L87 Difference]: Start difference. First operand 2667 states and 4306 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:29,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:29,447 INFO L93 Difference]: Finished difference Result 7707 states and 12501 transitions. [2024-11-23 23:44:29,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:44:29,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-11-23 23:44:29,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:29,474 INFO L225 Difference]: With dead ends: 7707 [2024-11-23 23:44:29,474 INFO L226 Difference]: Without dead ends: 5091 [2024-11-23 23:44:29,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:29,480 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 454 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:29,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 754 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5091 states. [2024-11-23 23:44:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5091 to 3863. [2024-11-23 23:44:29,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 3862 states have (on average 1.6126359399274988) internal successors, (6228), 3862 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 6228 transitions. [2024-11-23 23:44:29,652 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 6228 transitions. Word has length 65 [2024-11-23 23:44:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:29,652 INFO L471 AbstractCegarLoop]: Abstraction has 3863 states and 6228 transitions. [2024-11-23 23:44:29,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 6228 transitions. [2024-11-23 23:44:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-23 23:44:29,661 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:29,662 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:29,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:44:29,662 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:29,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:29,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1658042238, now seen corresponding path program 1 times [2024-11-23 23:44:29,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:29,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643226163] [2024-11-23 23:44:29,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:29,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:29,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:29,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643226163] [2024-11-23 23:44:29,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643226163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:29,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:29,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:44:29,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248428354] [2024-11-23 23:44:29,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:29,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:44:29,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:29,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:44:29,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:29,882 INFO L87 Difference]: Start difference. First operand 3863 states and 6228 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:29,988 INFO L93 Difference]: Finished difference Result 8640 states and 14034 transitions. [2024-11-23 23:44:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:44:29,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-23 23:44:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:30,020 INFO L225 Difference]: With dead ends: 8640 [2024-11-23 23:44:30,020 INFO L226 Difference]: Without dead ends: 5875 [2024-11-23 23:44:30,025 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 [2024-11-23 23:44:30,027 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 138 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:30,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 524 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2024-11-23 23:44:30,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 5873. [2024-11-23 23:44:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5873 states, 5872 states have (on average 1.6130790190735695) internal successors, (9472), 5872 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5873 states to 5873 states and 9472 transitions. [2024-11-23 23:44:30,282 INFO L78 Accepts]: Start accepts. Automaton has 5873 states and 9472 transitions. Word has length 66 [2024-11-23 23:44:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:30,282 INFO L471 AbstractCegarLoop]: Abstraction has 5873 states and 9472 transitions. [2024-11-23 23:44:30,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5873 states and 9472 transitions. [2024-11-23 23:44:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-23 23:44:30,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:30,285 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:30,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:44:30,285 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:30,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1876407130, now seen corresponding path program 1 times [2024-11-23 23:44:30,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:30,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491869773] [2024-11-23 23:44:30,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:30,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:30,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:30,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491869773] [2024-11-23 23:44:30,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491869773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:30,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:30,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:44:30,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33466835] [2024-11-23 23:44:30,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:30,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:44:30,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:30,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:44:30,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:30,479 INFO L87 Difference]: Start difference. First operand 5873 states and 9472 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:30,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:30,599 INFO L93 Difference]: Finished difference Result 12987 states and 20989 transitions. [2024-11-23 23:44:30,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:44:30,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-23 23:44:30,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:30,666 INFO L225 Difference]: With dead ends: 12987 [2024-11-23 23:44:30,667 INFO L226 Difference]: Without dead ends: 8817 [2024-11-23 23:44:30,674 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 [2024-11-23 23:44:30,675 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 126 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:30,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 469 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8817 states. [2024-11-23 23:44:30,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8817 to 8815. [2024-11-23 23:44:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8815 states, 8814 states have (on average 1.6056274109371456) internal successors, (14152), 8814 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8815 states to 8815 states and 14152 transitions. [2024-11-23 23:44:31,096 INFO L78 Accepts]: Start accepts. Automaton has 8815 states and 14152 transitions. Word has length 66 [2024-11-23 23:44:31,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:31,096 INFO L471 AbstractCegarLoop]: Abstraction has 8815 states and 14152 transitions. [2024-11-23 23:44:31,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 8815 states and 14152 transitions. [2024-11-23 23:44:31,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-23 23:44:31,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:31,100 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:31,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:44:31,100 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:31,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:31,101 INFO L85 PathProgramCache]: Analyzing trace with hash -430026452, now seen corresponding path program 1 times [2024-11-23 23:44:31,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:31,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770053523] [2024-11-23 23:44:31,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:31,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:31,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:31,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770053523] [2024-11-23 23:44:31,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770053523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:31,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:31,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:44:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400462151] [2024-11-23 23:44:31,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:31,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:44:31,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:31,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:44:31,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:31,279 INFO L87 Difference]: Start difference. First operand 8815 states and 14152 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:31,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:31,437 INFO L93 Difference]: Finished difference Result 19164 states and 30838 transitions. [2024-11-23 23:44:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:44:31,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-23 23:44:31,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:31,487 INFO L225 Difference]: With dead ends: 19164 [2024-11-23 23:44:31,487 INFO L226 Difference]: Without dead ends: 12900 [2024-11-23 23:44:31,496 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 [2024-11-23 23:44:31,499 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 132 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:31,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 509 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:31,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12900 states. [2024-11-23 23:44:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12900 to 12898. [2024-11-23 23:44:31,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12898 states, 12897 states have (on average 1.5971931456927968) internal successors, (20599), 12897 states have internal predecessors, (20599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12898 states to 12898 states and 20599 transitions. [2024-11-23 23:44:31,914 INFO L78 Accepts]: Start accepts. Automaton has 12898 states and 20599 transitions. Word has length 66 [2024-11-23 23:44:31,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:31,915 INFO L471 AbstractCegarLoop]: Abstraction has 12898 states and 20599 transitions. [2024-11-23 23:44:31,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:31,916 INFO L276 IsEmpty]: Start isEmpty. Operand 12898 states and 20599 transitions. [2024-11-23 23:44:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:44:31,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:31,920 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:31,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:44:31,920 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:31,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1812850740, now seen corresponding path program 1 times [2024-11-23 23:44:31,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:31,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416099337] [2024-11-23 23:44:31,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:31,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:32,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:32,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416099337] [2024-11-23 23:44:32,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416099337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:32,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:32,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:32,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20104402] [2024-11-23 23:44:32,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:32,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:32,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:32,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:32,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:32,434 INFO L87 Difference]: Start difference. First operand 12898 states and 20599 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:32,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:32,829 INFO L93 Difference]: Finished difference Result 25713 states and 41080 transitions. [2024-11-23 23:44:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:32,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-11-23 23:44:32,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:32,872 INFO L225 Difference]: With dead ends: 25713 [2024-11-23 23:44:32,872 INFO L226 Difference]: Without dead ends: 12900 [2024-11-23 23:44:32,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:44:32,912 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 385 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:32,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 617 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12900 states. [2024-11-23 23:44:33,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12900 to 12898. [2024-11-23 23:44:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12898 states, 12897 states have (on average 1.5875009692176476) internal successors, (20474), 12897 states have internal predecessors, (20474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12898 states to 12898 states and 20474 transitions. [2024-11-23 23:44:33,357 INFO L78 Accepts]: Start accepts. Automaton has 12898 states and 20474 transitions. Word has length 67 [2024-11-23 23:44:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:33,358 INFO L471 AbstractCegarLoop]: Abstraction has 12898 states and 20474 transitions. [2024-11-23 23:44:33,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:33,358 INFO L276 IsEmpty]: Start isEmpty. Operand 12898 states and 20474 transitions. [2024-11-23 23:44:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-23 23:44:33,360 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:33,360 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:33,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:44:33,361 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:33,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:33,362 INFO L85 PathProgramCache]: Analyzing trace with hash 528800646, now seen corresponding path program 1 times [2024-11-23 23:44:33,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:33,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486297701] [2024-11-23 23:44:33,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:33,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:33,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:33,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486297701] [2024-11-23 23:44:33,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486297701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:33,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:33,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:33,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523649978] [2024-11-23 23:44:33,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:33,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:33,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:33,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:33,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:33,905 INFO L87 Difference]: Start difference. First operand 12898 states and 20474 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:34,196 INFO L93 Difference]: Finished difference Result 36933 states and 58774 transitions. [2024-11-23 23:44:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:34,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-23 23:44:34,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:34,284 INFO L225 Difference]: With dead ends: 36933 [2024-11-23 23:44:34,285 INFO L226 Difference]: Without dead ends: 24120 [2024-11-23 23:44:34,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:44:34,305 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 253 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:34,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 623 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:34,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24120 states. [2024-11-23 23:44:34,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24120 to 24118. [2024-11-23 23:44:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24118 states, 24117 states have (on average 1.5768545009744164) internal successors, (38029), 24117 states have internal predecessors, (38029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24118 states to 24118 states and 38029 transitions. [2024-11-23 23:44:34,886 INFO L78 Accepts]: Start accepts. Automaton has 24118 states and 38029 transitions. Word has length 70 [2024-11-23 23:44:34,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:34,886 INFO L471 AbstractCegarLoop]: Abstraction has 24118 states and 38029 transitions. [2024-11-23 23:44:34,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 24118 states and 38029 transitions. [2024-11-23 23:44:34,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-23 23:44:34,887 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:34,888 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:34,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:44:34,888 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:34,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash -788958455, now seen corresponding path program 1 times [2024-11-23 23:44:34,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:34,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775148720] [2024-11-23 23:44:34,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:34,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:35,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:35,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775148720] [2024-11-23 23:44:35,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775148720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:35,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:35,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:35,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131944957] [2024-11-23 23:44:35,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:35,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:35,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:35,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:35,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:35,606 INFO L87 Difference]: Start difference. First operand 24118 states and 38029 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:35,760 INFO L93 Difference]: Finished difference Result 24844 states and 39116 transitions. [2024-11-23 23:44:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:35,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-23 23:44:35,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:35,833 INFO L225 Difference]: With dead ends: 24844 [2024-11-23 23:44:35,833 INFO L226 Difference]: Without dead ends: 24842 [2024-11-23 23:44:35,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:35,843 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:35,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 880 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24842 states. [2024-11-23 23:44:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24842 to 24842. [2024-11-23 23:44:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24842 states, 24841 states have (on average 1.5596795620144117) internal successors, (38744), 24841 states have internal predecessors, (38744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24842 states to 24842 states and 38744 transitions. [2024-11-23 23:44:36,566 INFO L78 Accepts]: Start accepts. Automaton has 24842 states and 38744 transitions. Word has length 71 [2024-11-23 23:44:36,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:36,566 INFO L471 AbstractCegarLoop]: Abstraction has 24842 states and 38744 transitions. [2024-11-23 23:44:36,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 24842 states and 38744 transitions. [2024-11-23 23:44:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-23 23:44:36,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:36,570 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:44:36,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:44:36,570 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:36,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:36,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1288596918, now seen corresponding path program 1 times [2024-11-23 23:44:36,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:36,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964545664] [2024-11-23 23:44:36,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:36,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:44:36,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:36,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964545664] [2024-11-23 23:44:36,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964545664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:36,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:36,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:36,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747905339] [2024-11-23 23:44:36,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:36,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:36,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:36,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:36,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:36,953 INFO L87 Difference]: Start difference. First operand 24842 states and 38744 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:37,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:37,309 INFO L93 Difference]: Finished difference Result 60730 states and 95066 transitions. [2024-11-23 23:44:37,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:37,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-23 23:44:37,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:37,455 INFO L225 Difference]: With dead ends: 60730 [2024-11-23 23:44:37,455 INFO L226 Difference]: Without dead ends: 48768 [2024-11-23 23:44:37,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:44:37,480 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 575 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:37,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1025 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:37,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48768 states. [2024-11-23 23:44:38,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48768 to 38122. [2024-11-23 23:44:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38122 states, 38121 states have (on average 1.5579864116890954) internal successors, (59392), 38121 states have internal predecessors, (59392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38122 states to 38122 states and 59392 transitions. [2024-11-23 23:44:38,649 INFO L78 Accepts]: Start accepts. Automaton has 38122 states and 59392 transitions. Word has length 97 [2024-11-23 23:44:38,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:38,650 INFO L471 AbstractCegarLoop]: Abstraction has 38122 states and 59392 transitions. [2024-11-23 23:44:38,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 38122 states and 59392 transitions. [2024-11-23 23:44:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-23 23:44:38,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:38,654 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:44:38,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:44:38,655 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:38,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:38,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1070232026, now seen corresponding path program 1 times [2024-11-23 23:44:38,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:38,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484999285] [2024-11-23 23:44:38,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:38,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 23:44:39,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:39,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484999285] [2024-11-23 23:44:39,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484999285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:39,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:39,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:39,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938567882] [2024-11-23 23:44:39,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:39,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:39,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:39,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:39,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:39,021 INFO L87 Difference]: Start difference. First operand 38122 states and 59392 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:39,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:39,501 INFO L93 Difference]: Finished difference Result 68116 states and 106638 transitions. [2024-11-23 23:44:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:39,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 97 [2024-11-23 23:44:39,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:39,709 INFO L225 Difference]: With dead ends: 68116 [2024-11-23 23:44:39,710 INFO L226 Difference]: Without dead ends: 56384 [2024-11-23 23:44:39,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:44:39,744 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 584 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:39,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1090 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:44:39,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56384 states. [2024-11-23 23:44:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56384 to 51626. [2024-11-23 23:44:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51626 states, 51625 states have (on average 1.5596707021791767) internal successors, (80518), 51625 states have internal predecessors, (80518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51626 states to 51626 states and 80518 transitions. [2024-11-23 23:44:41,113 INFO L78 Accepts]: Start accepts. Automaton has 51626 states and 80518 transitions. Word has length 97 [2024-11-23 23:44:41,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:41,113 INFO L471 AbstractCegarLoop]: Abstraction has 51626 states and 80518 transitions. [2024-11-23 23:44:41,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:41,114 INFO L276 IsEmpty]: Start isEmpty. Operand 51626 states and 80518 transitions. [2024-11-23 23:44:41,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-23 23:44:41,117 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:41,117 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:44:41,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:44:41,118 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:41,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:41,119 INFO L85 PathProgramCache]: Analyzing trace with hash 918301688, now seen corresponding path program 1 times [2024-11-23 23:44:41,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:41,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692971977] [2024-11-23 23:44:41,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:41,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-23 23:44:41,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:41,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692971977] [2024-11-23 23:44:41,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692971977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:41,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:41,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:41,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832566499] [2024-11-23 23:44:41,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:41,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:41,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:41,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:41,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:41,394 INFO L87 Difference]: Start difference. First operand 51626 states and 80518 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:42,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:42,160 INFO L93 Difference]: Finished difference Result 72776 states and 113938 transitions. [2024-11-23 23:44:42,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:42,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 97 [2024-11-23 23:44:42,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:42,345 INFO L225 Difference]: With dead ends: 72776 [2024-11-23 23:44:42,346 INFO L226 Difference]: Without dead ends: 61044 [2024-11-23 23:44:42,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:44:42,391 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 583 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:42,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1063 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61044 states. [2024-11-23 23:44:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61044 to 59150. [2024-11-23 23:44:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59150 states, 59149 states have (on average 1.5613788905983195) internal successors, (92354), 59149 states have internal predecessors, (92354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59150 states to 59150 states and 92354 transitions. [2024-11-23 23:44:44,600 INFO L78 Accepts]: Start accepts. Automaton has 59150 states and 92354 transitions. Word has length 97 [2024-11-23 23:44:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:44,601 INFO L471 AbstractCegarLoop]: Abstraction has 59150 states and 92354 transitions. [2024-11-23 23:44:44,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 59150 states and 92354 transitions. [2024-11-23 23:44:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-23 23:44:44,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:44,605 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:44:44,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:44:44,605 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:44,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1354302985, now seen corresponding path program 1 times [2024-11-23 23:44:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224590290] [2024-11-23 23:44:44,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:44,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:44:45,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:45,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224590290] [2024-11-23 23:44:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224590290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:45,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:45,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:44:45,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512756908] [2024-11-23 23:44:45,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:45,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:44:45,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:45,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:44:45,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:45,068 INFO L87 Difference]: Start difference. First operand 59150 states and 92354 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:45,756 INFO L93 Difference]: Finished difference Result 96273 states and 151013 transitions. [2024-11-23 23:44:45,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:44:45,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 98 [2024-11-23 23:44:45,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:45,953 INFO L225 Difference]: With dead ends: 96273 [2024-11-23 23:44:45,953 INFO L226 Difference]: Without dead ends: 76695 [2024-11-23 23:44:45,989 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 [2024-11-23 23:44:45,990 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 266 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:45,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 725 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76695 states. [2024-11-23 23:44:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76695 to 74803. [2024-11-23 23:44:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74803 states, 74802 states have (on average 1.5616962113312478) internal successors, (116818), 74802 states have internal predecessors, (116818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:47,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74803 states to 74803 states and 116818 transitions. [2024-11-23 23:44:47,842 INFO L78 Accepts]: Start accepts. Automaton has 74803 states and 116818 transitions. Word has length 98 [2024-11-23 23:44:47,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:47,843 INFO L471 AbstractCegarLoop]: Abstraction has 74803 states and 116818 transitions. [2024-11-23 23:44:47,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand 74803 states and 116818 transitions. [2024-11-23 23:44:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-23 23:44:47,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:47,846 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:44:47,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:44:47,846 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:47,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1163404503, now seen corresponding path program 1 times [2024-11-23 23:44:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:47,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062897039] [2024-11-23 23:44:47,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:44:48,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:48,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062897039] [2024-11-23 23:44:48,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062897039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:48,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:48,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:44:48,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862825416] [2024-11-23 23:44:48,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:48,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:44:48,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:48,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:44:48,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:48,011 INFO L87 Difference]: Start difference. First operand 74803 states and 116818 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:48,725 INFO L93 Difference]: Finished difference Result 161245 states and 252601 transitions. [2024-11-23 23:44:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:44:48,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 98 [2024-11-23 23:44:48,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:49,093 INFO L225 Difference]: With dead ends: 161245 [2024-11-23 23:44:49,094 INFO L226 Difference]: Without dead ends: 126183 [2024-11-23 23:44:49,158 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 [2024-11-23 23:44:49,160 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 117 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:49,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 416 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:49,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126183 states. [2024-11-23 23:44:52,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126183 to 125905. [2024-11-23 23:44:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125905 states, 125904 states have (on average 1.5618089973313) internal successors, (196638), 125904 states have internal predecessors, (196638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125905 states to 125905 states and 196638 transitions. [2024-11-23 23:44:52,506 INFO L78 Accepts]: Start accepts. Automaton has 125905 states and 196638 transitions. Word has length 98 [2024-11-23 23:44:52,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:52,507 INFO L471 AbstractCegarLoop]: Abstraction has 125905 states and 196638 transitions. [2024-11-23 23:44:52,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand 125905 states and 196638 transitions. [2024-11-23 23:44:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 23:44:52,509 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:52,510 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:44:52,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:44:52,510 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:52,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:52,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1010324438, now seen corresponding path program 1 times [2024-11-23 23:44:52,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:52,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792354198] [2024-11-23 23:44:52,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:52,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:52,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:52,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792354198] [2024-11-23 23:44:52,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792354198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:52,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:52,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:44:52,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472576733] [2024-11-23 23:44:52,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:52,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:44:52,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:52,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:44:52,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:52,637 INFO L87 Difference]: Start difference. First operand 125905 states and 196638 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:54,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:54,464 INFO L93 Difference]: Finished difference Result 370545 states and 578061 transitions. [2024-11-23 23:44:54,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:44:54,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-23 23:44:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:55,092 INFO L225 Difference]: With dead ends: 370545 [2024-11-23 23:44:55,092 INFO L226 Difference]: Without dead ends: 244725 [2024-11-23 23:44:55,206 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 [2024-11-23 23:44:55,207 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 172 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:55,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 543 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:55,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244725 states. [2024-11-23 23:44:58,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244725 to 244723. [2024-11-23 23:44:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244723 states, 244722 states have (on average 1.550056799143518) internal successors, (379333), 244722 states have internal predecessors, (379333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244723 states to 244723 states and 379333 transitions. [2024-11-23 23:45:00,506 INFO L78 Accepts]: Start accepts. Automaton has 244723 states and 379333 transitions. Word has length 99 [2024-11-23 23:45:00,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:00,506 INFO L471 AbstractCegarLoop]: Abstraction has 244723 states and 379333 transitions. [2024-11-23 23:45:00,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:00,507 INFO L276 IsEmpty]: Start isEmpty. Operand 244723 states and 379333 transitions. [2024-11-23 23:45:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 23:45:00,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:00,512 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:45:00,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:45:00,513 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:00,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1491741236, now seen corresponding path program 1 times [2024-11-23 23:45:00,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:00,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706666596] [2024-11-23 23:45:00,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:00,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:00,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:00,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706666596] [2024-11-23 23:45:00,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706666596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:00,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:00,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:45:00,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448207936] [2024-11-23 23:45:00,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:00,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:45:00,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:00,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:45:00,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:45:00,678 INFO L87 Difference]: Start difference. First operand 244723 states and 379333 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:04,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:04,676 INFO L93 Difference]: Finished difference Result 719857 states and 1114335 transitions. [2024-11-23 23:45:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:45:04,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-23 23:45:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:05,568 INFO L225 Difference]: With dead ends: 719857 [2024-11-23 23:45:05,568 INFO L226 Difference]: Without dead ends: 475263 [2024-11-23 23:45:05,686 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 [2024-11-23 23:45:05,686 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 153 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:05,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 506 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:45:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475263 states. [2024-11-23 23:45:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475263 to 475261. [2024-11-23 23:45:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475261 states, 475260 states have (on average 1.53759415898666) internal successors, (730757), 475260 states have internal predecessors, (730757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475261 states to 475261 states and 730757 transitions. [2024-11-23 23:45:15,903 INFO L78 Accepts]: Start accepts. Automaton has 475261 states and 730757 transitions. Word has length 99 [2024-11-23 23:45:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:15,904 INFO L471 AbstractCegarLoop]: Abstraction has 475261 states and 730757 transitions. [2024-11-23 23:45:15,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 475261 states and 730757 transitions. [2024-11-23 23:45:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 23:45:15,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:15,909 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:45:15,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:45:15,910 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:15,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:15,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1028124502, now seen corresponding path program 1 times [2024-11-23 23:45:15,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:15,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988081969] [2024-11-23 23:45:15,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:15,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-23 23:45:16,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:16,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988081969] [2024-11-23 23:45:16,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988081969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:16,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:16,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:45:16,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837491720] [2024-11-23 23:45:16,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:16,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:45:16,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:16,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:45:16,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:45:16,052 INFO L87 Difference]: Start difference. First operand 475261 states and 730757 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)