./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1 --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 0d12edbd4df2f08d75221f3c96b68e50e6394815b34a699d313e71ea24bf9c38 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:40:25,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:40:25,110 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:40:25,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:40:25,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:40:25,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:40:25,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:40:25,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:40:25,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:40:25,137 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:40:25,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:40:25,137 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:40:25,137 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:40:25,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:40:25,138 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:40:25,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:40:25,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:40:25,138 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:40:25,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:40:25,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:40:25,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:40:25,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:40:25,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:40:25,138 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:40:25,138 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:40:25,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:40:25,139 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:40:25,139 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:40:25,139 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:40:25,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:40:25,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:40:25,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:40:25,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:40:25,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:40:25,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:40:25,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:40:25,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:40:25,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:40:25,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:40:25,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:40:25,140 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:40:25,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:40:25,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:40:25,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:40:25,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:40:25,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:40:25,140 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:40:25,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:40:25,140 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_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1 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 -> 0d12edbd4df2f08d75221f3c96b68e50e6394815b34a699d313e71ea24bf9c38 [2024-12-02 14:40:25,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:40:25,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:40:25,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:40:25,386 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:40:25,387 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:40:25,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c [2024-12-02 14:40:28,008 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/data/524f744cf/04f847dc23ad4b7d907e9e14c8d31dd5/FLAG732c3971a [2024-12-02 14:40:28,295 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:40:28,296 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c [2024-12-02 14:40:28,312 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/data/524f744cf/04f847dc23ad4b7d907e9e14c8d31dd5/FLAG732c3971a [2024-12-02 14:40:28,567 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/data/524f744cf/04f847dc23ad4b7d907e9e14c8d31dd5 [2024-12-02 14:40:28,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:40:28,571 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:40:28,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:40:28,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:40:28,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:40:28,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:40:28" (1/1) ... [2024-12-02 14:40:28,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d14fa7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:28, skipping insertion in model container [2024-12-02 14:40:28,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:40:28" (1/1) ... [2024-12-02 14:40:28,618 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:40:28,921 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_ee35c10d-1a2a-498e-b665-f7f4283ff55e/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c[40506,40519] [2024-12-02 14:40:28,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:40:29,001 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:40:29,007 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-12-02 14:40:29,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [716] [2024-12-02 14:40:29,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [754] [2024-12-02 14:40:29,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1120] [2024-12-02 14:40:29,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1220] [2024-12-02 14:40:29,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1340] [2024-12-02 14:40:29,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [1358] [2024-12-02 14:40:29,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1548] [2024-12-02 14:40:29,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1897] [2024-12-02 14:40:29,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1906] [2024-12-02 14:40:29,060 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_ee35c10d-1a2a-498e-b665-f7f4283ff55e/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c[40506,40519] [2024-12-02 14:40:29,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:40:29,111 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:40:29,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29 WrapperNode [2024-12-02 14:40:29,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:40:29,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:40:29,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:40:29,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:40:29,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,173 INFO L138 Inliner]: procedures = 91, calls = 347, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 926 [2024-12-02 14:40:29,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:40:29,174 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:40:29,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:40:29,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:40:29,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,188 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,211 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 14:40:29,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,229 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,250 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:40:29,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:40:29,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:40:29,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:40:29,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (1/1) ... [2024-12-02 14:40:29,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:40:29,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:40:29,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:40:29,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:40:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:40:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-02 14:40:29,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-02 14:40:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 14:40:29,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 14:40:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 14:40:29,315 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 14:40:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 14:40:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 14:40:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 14:40:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 14:40:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 14:40:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 14:40:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-12-02 14:40:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-12-02 14:40:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 14:40:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 14:40:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 14:40:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 14:40:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 14:40:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 14:40:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 14:40:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 14:40:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 14:40:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 14:40:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 14:40:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 14:40:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 14:40:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 14:40:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-02 14:40:29,317 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-02 14:40:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 14:40:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 14:40:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 14:40:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 14:40:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-02 14:40:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-02 14:40:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 14:40:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 14:40:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 14:40:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 14:40:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 14:40:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 14:40:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:40:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:40:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 14:40:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 14:40:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 14:40:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 14:40:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 14:40:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 14:40:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 14:40:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 14:40:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 14:40:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 14:40:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 14:40:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 14:40:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 14:40:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:40:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:40:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 14:40:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 14:40:29,476 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:40:29,478 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:40:30,513 INFO L? ?]: Removed 470 outVars from TransFormulas that were not future-live. [2024-12-02 14:40:30,513 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:40:30,534 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:40:30,534 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:40:30,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:40:30 BoogieIcfgContainer [2024-12-02 14:40:30,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:40:30,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:40:30,537 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:40:30,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:40:30,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:40:28" (1/3) ... [2024-12-02 14:40:30,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57702a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:40:30, skipping insertion in model container [2024-12-02 14:40:30,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:29" (2/3) ... [2024-12-02 14:40:30,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57702a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:40:30, skipping insertion in model container [2024-12-02 14:40:30,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:40:30" (3/3) ... [2024-12-02 14:40:30,543 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product29.cil.c [2024-12-02 14:40:30,553 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:40:30,555 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product29.cil.c that has 27 procedures, 596 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:40:30,610 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:40:30,619 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;@2b6c5909, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:40:30,619 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:40:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 462 states have (on average 1.6796536796536796) internal successors, (776), 480 states have internal predecessors, (776), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2024-12-02 14:40:30,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 14:40:30,641 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:30,641 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:30,642 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:30,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:30,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1198628252, now seen corresponding path program 1 times [2024-12-02 14:40:30,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:30,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215459068] [2024-12-02 14:40:30,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:30,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:31,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:31,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215459068] [2024-12-02 14:40:31,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215459068] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:31,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:31,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:40:31,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578282805] [2024-12-02 14:40:31,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:31,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:40:31,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:31,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:40:31,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:40:31,354 INFO L87 Difference]: Start difference. First operand has 596 states, 462 states have (on average 1.6796536796536796) internal successors, (776), 480 states have internal predecessors, (776), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 14:40:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:31,579 INFO L93 Difference]: Finished difference Result 1189 states and 1988 transitions. [2024-12-02 14:40:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:40:31,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2024-12-02 14:40:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:31,595 INFO L225 Difference]: With dead ends: 1189 [2024-12-02 14:40:31,596 INFO L226 Difference]: Without dead ends: 601 [2024-12-02 14:40:31,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:40:31,603 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 91 mSDsluCounter, 4770 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5741 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:31,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5741 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:40:31,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-12-02 14:40:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2024-12-02 14:40:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 465 states have (on average 1.6709677419354838) internal successors, (777), 483 states have internal predecessors, (777), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-12-02 14:40:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 990 transitions. [2024-12-02 14:40:31,694 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 990 transitions. Word has length 99 [2024-12-02 14:40:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:31,694 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 990 transitions. [2024-12-02 14:40:31,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 14:40:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 990 transitions. [2024-12-02 14:40:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 14:40:31,702 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:31,702 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:31,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:40:31,703 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:31,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:31,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2083760280, now seen corresponding path program 1 times [2024-12-02 14:40:31,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:31,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504724368] [2024-12-02 14:40:31,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:31,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:32,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:32,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504724368] [2024-12-02 14:40:32,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504724368] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:32,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:32,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:40:32,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054247790] [2024-12-02 14:40:32,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:32,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:40:32,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:32,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:40:32,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:40:32,088 INFO L87 Difference]: Start difference. First operand 599 states and 990 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 14:40:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:32,232 INFO L93 Difference]: Finished difference Result 1193 states and 1983 transitions. [2024-12-02 14:40:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:40:32,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2024-12-02 14:40:32,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:32,238 INFO L225 Difference]: With dead ends: 1193 [2024-12-02 14:40:32,239 INFO L226 Difference]: Without dead ends: 610 [2024-12-02 14:40:32,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:40:32,244 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 90 mSDsluCounter, 4759 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5730 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:32,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5730 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:40:32,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-12-02 14:40:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 599. [2024-12-02 14:40:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 465 states have (on average 1.6709677419354838) internal successors, (777), 483 states have internal predecessors, (777), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-12-02 14:40:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 990 transitions. [2024-12-02 14:40:32,290 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 990 transitions. Word has length 100 [2024-12-02 14:40:32,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:32,290 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 990 transitions. [2024-12-02 14:40:32,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 14:40:32,290 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 990 transitions. [2024-12-02 14:40:32,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 14:40:32,295 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:32,295 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:32,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:40:32,296 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:32,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:32,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1188009300, now seen corresponding path program 1 times [2024-12-02 14:40:32,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:32,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615121550] [2024-12-02 14:40:32,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:32,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:32,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:32,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615121550] [2024-12-02 14:40:32,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615121550] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:32,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:32,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:40:32,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507212590] [2024-12-02 14:40:32,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:32,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:40:32,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:32,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:40:32,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:32,490 INFO L87 Difference]: Start difference. First operand 599 states and 990 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:40:32,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:32,557 INFO L93 Difference]: Finished difference Result 1180 states and 1961 transitions. [2024-12-02 14:40:32,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:40:32,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-12-02 14:40:32,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:32,561 INFO L225 Difference]: With dead ends: 1180 [2024-12-02 14:40:32,561 INFO L226 Difference]: Without dead ends: 569 [2024-12-02 14:40:32,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:40:32,564 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 14 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:32,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2875 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:40:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-12-02 14:40:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2024-12-02 14:40:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 438 states have (on average 1.6552511415525115) internal successors, (725), 454 states have internal predecessors, (725), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:40:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 934 transitions. [2024-12-02 14:40:32,590 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 934 transitions. Word has length 100 [2024-12-02 14:40:32,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:32,590 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 934 transitions. [2024-12-02 14:40:32,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:40:32,591 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 934 transitions. [2024-12-02 14:40:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 14:40:32,594 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:32,594 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:32,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:40:32,594 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:32,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash -797617344, now seen corresponding path program 1 times [2024-12-02 14:40:32,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:32,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821393937] [2024-12-02 14:40:32,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:32,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:32,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:32,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821393937] [2024-12-02 14:40:32,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821393937] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:32,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:32,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:40:32,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499674150] [2024-12-02 14:40:32,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:32,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:40:32,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:32,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:40:32,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:40:32,794 INFO L87 Difference]: Start difference. First operand 569 states and 934 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 14:40:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:32,863 INFO L93 Difference]: Finished difference Result 1131 states and 1867 transitions. [2024-12-02 14:40:32,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:40:32,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2024-12-02 14:40:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:32,868 INFO L225 Difference]: With dead ends: 1131 [2024-12-02 14:40:32,868 INFO L226 Difference]: Without dead ends: 563 [2024-12-02 14:40:32,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:40:32,872 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 63 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5486 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:32,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5486 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:40:32,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-12-02 14:40:32,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2024-12-02 14:40:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 432 states have (on average 1.6481481481481481) internal successors, (712), 448 states have internal predecessors, (712), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:40:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 921 transitions. [2024-12-02 14:40:32,893 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 921 transitions. Word has length 101 [2024-12-02 14:40:32,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:32,893 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 921 transitions. [2024-12-02 14:40:32,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 14:40:32,893 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 921 transitions. [2024-12-02 14:40:32,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 14:40:32,896 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:32,897 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:32,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:40:32,897 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:32,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:32,897 INFO L85 PathProgramCache]: Analyzing trace with hash 379080332, now seen corresponding path program 1 times [2024-12-02 14:40:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:32,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145673799] [2024-12-02 14:40:32,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:33,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:33,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145673799] [2024-12-02 14:40:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145673799] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:33,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:33,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:40:33,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011451032] [2024-12-02 14:40:33,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:33,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:40:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:33,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:40:33,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:40:33,060 INFO L87 Difference]: Start difference. First operand 563 states and 921 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 14:40:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:33,126 INFO L93 Difference]: Finished difference Result 1119 states and 1841 transitions. [2024-12-02 14:40:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:40:33,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2024-12-02 14:40:33,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:33,130 INFO L225 Difference]: With dead ends: 1119 [2024-12-02 14:40:33,130 INFO L226 Difference]: Without dead ends: 557 [2024-12-02 14:40:33,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:40:33,133 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 49 mSDsluCounter, 4514 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5426 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:33,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5426 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:40:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-12-02 14:40:33,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-12-02 14:40:33,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.6408450704225352) internal successors, (699), 442 states have internal predecessors, (699), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:40:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 908 transitions. [2024-12-02 14:40:33,150 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 908 transitions. Word has length 102 [2024-12-02 14:40:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:33,150 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 908 transitions. [2024-12-02 14:40:33,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 14:40:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 908 transitions. [2024-12-02 14:40:33,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 14:40:33,152 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:33,152 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:33,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:40:33,152 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:33,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:33,152 INFO L85 PathProgramCache]: Analyzing trace with hash -801506867, now seen corresponding path program 1 times [2024-12-02 14:40:33,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:33,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25434695] [2024-12-02 14:40:33,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:33,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:33,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:33,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25434695] [2024-12-02 14:40:33,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25434695] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:33,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:33,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:40:33,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478462154] [2024-12-02 14:40:33,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:33,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:40:33,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:33,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:40:33,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:40:33,301 INFO L87 Difference]: Start difference. First operand 557 states and 908 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 14:40:33,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:33,360 INFO L93 Difference]: Finished difference Result 1107 states and 1815 transitions. [2024-12-02 14:40:33,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:40:33,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2024-12-02 14:40:33,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:33,364 INFO L225 Difference]: With dead ends: 1107 [2024-12-02 14:40:33,364 INFO L226 Difference]: Without dead ends: 557 [2024-12-02 14:40:33,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:40:33,366 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 24 mSDsluCounter, 4478 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5378 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:33,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5378 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:40:33,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-12-02 14:40:33,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-12-02 14:40:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.6384976525821595) internal successors, (698), 442 states have internal predecessors, (698), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:40:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 907 transitions. [2024-12-02 14:40:33,383 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 907 transitions. Word has length 102 [2024-12-02 14:40:33,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:33,383 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 907 transitions. [2024-12-02 14:40:33,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 14:40:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 907 transitions. [2024-12-02 14:40:33,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 14:40:33,386 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:33,386 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:33,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:40:33,386 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:33,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:33,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1837025052, now seen corresponding path program 1 times [2024-12-02 14:40:33,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:33,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064186304] [2024-12-02 14:40:33,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:33,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:33,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:33,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064186304] [2024-12-02 14:40:33,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064186304] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:33,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:33,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:40:33,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191263132] [2024-12-02 14:40:33,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:33,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:40:33,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:33,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:40:33,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:33,473 INFO L87 Difference]: Start difference. First operand 557 states and 907 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:40:33,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:33,516 INFO L93 Difference]: Finished difference Result 1098 states and 1800 transitions. [2024-12-02 14:40:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:40:33,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2024-12-02 14:40:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:33,520 INFO L225 Difference]: With dead ends: 1098 [2024-12-02 14:40:33,520 INFO L226 Difference]: Without dead ends: 557 [2024-12-02 14:40:33,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:33,523 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 15 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:33,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2661 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:40:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-12-02 14:40:33,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-12-02 14:40:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.636150234741784) internal successors, (697), 442 states have internal predecessors, (697), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:40:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 906 transitions. [2024-12-02 14:40:33,539 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 906 transitions. Word has length 103 [2024-12-02 14:40:33,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:33,539 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 906 transitions. [2024-12-02 14:40:33,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:40:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 906 transitions. [2024-12-02 14:40:33,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 14:40:33,541 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:33,541 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:33,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:40:33,541 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:33,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1585373804, now seen corresponding path program 1 times [2024-12-02 14:40:33,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:33,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824915077] [2024-12-02 14:40:33,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:33,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:33,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:33,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824915077] [2024-12-02 14:40:33,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824915077] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:33,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:33,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:40:33,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669686833] [2024-12-02 14:40:33,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:33,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:40:33,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:33,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:40:33,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:33,626 INFO L87 Difference]: Start difference. First operand 557 states and 906 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:40:33,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:33,673 INFO L93 Difference]: Finished difference Result 1098 states and 1798 transitions. [2024-12-02 14:40:33,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:40:33,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-12-02 14:40:33,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:33,678 INFO L225 Difference]: With dead ends: 1098 [2024-12-02 14:40:33,678 INFO L226 Difference]: Without dead ends: 557 [2024-12-02 14:40:33,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:33,701 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 14 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:33,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2663 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:40:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-12-02 14:40:33,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-12-02 14:40:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.6338028169014085) internal successors, (696), 442 states have internal predecessors, (696), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:40:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 905 transitions. [2024-12-02 14:40:33,717 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 905 transitions. Word has length 104 [2024-12-02 14:40:33,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:33,717 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 905 transitions. [2024-12-02 14:40:33,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:40:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 905 transitions. [2024-12-02 14:40:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 14:40:33,719 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:33,719 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:33,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:40:33,720 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:33,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2112820695, now seen corresponding path program 1 times [2024-12-02 14:40:33,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:33,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738206091] [2024-12-02 14:40:33,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:33,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:33,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:33,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738206091] [2024-12-02 14:40:33,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738206091] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:33,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:33,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:40:33,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438345449] [2024-12-02 14:40:33,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:33,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:40:33,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:33,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:40:33,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:33,810 INFO L87 Difference]: Start difference. First operand 557 states and 905 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:40:33,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:33,850 INFO L93 Difference]: Finished difference Result 1098 states and 1796 transitions. [2024-12-02 14:40:33,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:40:33,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2024-12-02 14:40:33,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:33,854 INFO L225 Difference]: With dead ends: 1098 [2024-12-02 14:40:33,854 INFO L226 Difference]: Without dead ends: 557 [2024-12-02 14:40:33,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:33,856 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 13 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:33,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2665 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:40:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-12-02 14:40:33,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-12-02 14:40:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.6314553990610328) internal successors, (695), 442 states have internal predecessors, (695), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:40:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 904 transitions. [2024-12-02 14:40:33,873 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 904 transitions. Word has length 105 [2024-12-02 14:40:33,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:33,873 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 904 transitions. [2024-12-02 14:40:33,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:40:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 904 transitions. [2024-12-02 14:40:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 14:40:33,875 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:33,875 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:33,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:40:33,875 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:33,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1083857489, now seen corresponding path program 1 times [2024-12-02 14:40:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:33,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099038558] [2024-12-02 14:40:33,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:33,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:33,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:33,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099038558] [2024-12-02 14:40:33,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099038558] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:33,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:33,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:40:33,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235558146] [2024-12-02 14:40:33,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:33,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:40:33,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:33,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:40:33,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:33,960 INFO L87 Difference]: Start difference. First operand 557 states and 904 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:40:33,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:33,999 INFO L93 Difference]: Finished difference Result 1098 states and 1794 transitions. [2024-12-02 14:40:34,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:40:34,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-12-02 14:40:34,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:34,003 INFO L225 Difference]: With dead ends: 1098 [2024-12-02 14:40:34,003 INFO L226 Difference]: Without dead ends: 557 [2024-12-02 14:40:34,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:34,005 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 12 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:34,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2667 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:40:34,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-12-02 14:40:34,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-12-02 14:40:34,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.6291079812206573) internal successors, (694), 442 states have internal predecessors, (694), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:40:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 903 transitions. [2024-12-02 14:40:34,021 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 903 transitions. Word has length 106 [2024-12-02 14:40:34,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:34,021 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 903 transitions. [2024-12-02 14:40:34,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:40:34,021 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 903 transitions. [2024-12-02 14:40:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 14:40:34,023 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:34,023 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:34,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:40:34,023 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:34,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1021743250, now seen corresponding path program 1 times [2024-12-02 14:40:34,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:34,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925625905] [2024-12-02 14:40:34,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:34,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:34,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:34,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925625905] [2024-12-02 14:40:34,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925625905] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:34,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:34,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:40:34,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564936214] [2024-12-02 14:40:34,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:34,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:40:34,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:34,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:40:34,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:40:34,229 INFO L87 Difference]: Start difference. First operand 557 states and 903 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 14:40:34,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:34,923 INFO L93 Difference]: Finished difference Result 1580 states and 2591 transitions. [2024-12-02 14:40:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:40:34,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2024-12-02 14:40:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:34,931 INFO L225 Difference]: With dead ends: 1580 [2024-12-02 14:40:34,931 INFO L226 Difference]: Without dead ends: 1041 [2024-12-02 14:40:34,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:40:34,935 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 767 mSDsluCounter, 3443 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 4392 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:34,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 4392 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:40:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2024-12-02 14:40:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1033. [2024-12-02 14:40:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 793 states have (on average 1.5952080706179066) internal successors, (1265), 823 states have internal predecessors, (1265), 194 states have call successors, (194), 49 states have call predecessors, (194), 45 states have return successors, (195), 185 states have call predecessors, (195), 190 states have call successors, (195) [2024-12-02 14:40:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1654 transitions. [2024-12-02 14:40:34,969 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1654 transitions. Word has length 107 [2024-12-02 14:40:34,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:34,969 INFO L471 AbstractCegarLoop]: Abstraction has 1033 states and 1654 transitions. [2024-12-02 14:40:34,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 14:40:34,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1654 transitions. [2024-12-02 14:40:34,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 14:40:34,971 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:34,971 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:34,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:40:34,972 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:34,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1722829882, now seen corresponding path program 1 times [2024-12-02 14:40:34,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:34,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99277139] [2024-12-02 14:40:34,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:34,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:40:35,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:35,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99277139] [2024-12-02 14:40:35,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99277139] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:40:35,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875085461] [2024-12-02 14:40:35,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:35,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:40:35,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:40:35,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:40:35,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:40:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:35,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:40:35,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:40:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:40:35,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:40:35,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875085461] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:35,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:40:35,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-12-02 14:40:35,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082146317] [2024-12-02 14:40:35,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:35,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:40:35,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:35,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:40:35,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:40:35,675 INFO L87 Difference]: Start difference. First operand 1033 states and 1654 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:40:35,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:35,772 INFO L93 Difference]: Finished difference Result 2977 states and 4834 transitions. [2024-12-02 14:40:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:40:35,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2024-12-02 14:40:35,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:35,785 INFO L225 Difference]: With dead ends: 2977 [2024-12-02 14:40:35,785 INFO L226 Difference]: Without dead ends: 1962 [2024-12-02 14:40:35,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:40:35,792 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 826 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:35,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1770 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:40:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2024-12-02 14:40:35,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1901. [2024-12-02 14:40:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1901 states, 1468 states have (on average 1.6137602179836512) internal successors, (2369), 1528 states have internal predecessors, (2369), 347 states have call successors, (347), 88 states have call predecessors, (347), 85 states have return successors, (362), 334 states have call predecessors, (362), 343 states have call successors, (362) [2024-12-02 14:40:35,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 3078 transitions. [2024-12-02 14:40:35,896 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 3078 transitions. Word has length 112 [2024-12-02 14:40:35,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:35,897 INFO L471 AbstractCegarLoop]: Abstraction has 1901 states and 3078 transitions. [2024-12-02 14:40:35,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:40:35,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 3078 transitions. [2024-12-02 14:40:35,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 14:40:35,901 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:35,902 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:35,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-12-02 14:40:36,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 14:40:36,102 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:36,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:36,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1932639380, now seen corresponding path program 1 times [2024-12-02 14:40:36,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:36,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985709767] [2024-12-02 14:40:36,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:36,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:40:36,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:36,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985709767] [2024-12-02 14:40:36,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985709767] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:40:36,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557671893] [2024-12-02 14:40:36,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:36,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:40:36,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:40:36,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:40:36,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:40:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:36,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:40:36,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:40:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:40:36,835 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:40:36,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557671893] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:36,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:40:36,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-12-02 14:40:36,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517217093] [2024-12-02 14:40:36,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:36,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:40:36,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:36,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:40:36,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:40:36,836 INFO L87 Difference]: Start difference. First operand 1901 states and 3078 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:40:36,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:36,973 INFO L93 Difference]: Finished difference Result 4266 states and 6945 transitions. [2024-12-02 14:40:36,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:40:36,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2024-12-02 14:40:36,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:36,984 INFO L225 Difference]: With dead ends: 4266 [2024-12-02 14:40:36,984 INFO L226 Difference]: Without dead ends: 2383 [2024-12-02 14:40:36,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:40:36,990 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 826 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:36,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1697 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:40:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2024-12-02 14:40:37,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 2336. [2024-12-02 14:40:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 1807 states have (on average 1.6258992805755397) internal successors, (2938), 1882 states have internal predecessors, (2938), 424 states have call successors, (424), 106 states have call predecessors, (424), 104 states have return successors, (443), 410 states have call predecessors, (443), 420 states have call successors, (443) [2024-12-02 14:40:37,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3805 transitions. [2024-12-02 14:40:37,072 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3805 transitions. Word has length 114 [2024-12-02 14:40:37,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:37,073 INFO L471 AbstractCegarLoop]: Abstraction has 2336 states and 3805 transitions. [2024-12-02 14:40:37,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:40:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3805 transitions. [2024-12-02 14:40:37,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:40:37,075 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:37,075 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:37,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 14:40:37,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:40:37,276 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:37,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:37,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1275730305, now seen corresponding path program 1 times [2024-12-02 14:40:37,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:37,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99001524] [2024-12-02 14:40:37,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:37,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:37,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:37,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99001524] [2024-12-02 14:40:37,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99001524] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:37,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:37,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:40:37,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575381044] [2024-12-02 14:40:37,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:37,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:40:37,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:37,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:40:37,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:40:37,405 INFO L87 Difference]: Start difference. First operand 2336 states and 3805 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:40:38,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:38,031 INFO L93 Difference]: Finished difference Result 6904 states and 11475 transitions. [2024-12-02 14:40:38,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:40:38,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-12-02 14:40:38,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:38,051 INFO L225 Difference]: With dead ends: 6904 [2024-12-02 14:40:38,051 INFO L226 Difference]: Without dead ends: 4586 [2024-12-02 14:40:38,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:40:38,059 INFO L435 NwaCegarLoop]: 1013 mSDtfsCounter, 898 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 4655 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:38,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 4655 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:40:38,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2024-12-02 14:40:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4533. [2024-12-02 14:40:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4533 states, 3509 states have (on average 1.6221145625534341) internal successors, (5692), 3654 states have internal predecessors, (5692), 818 states have call successors, (818), 206 states have call predecessors, (818), 205 states have return successors, (1003), 798 states have call predecessors, (1003), 812 states have call successors, (1003) [2024-12-02 14:40:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4533 states to 4533 states and 7513 transitions. [2024-12-02 14:40:38,213 INFO L78 Accepts]: Start accepts. Automaton has 4533 states and 7513 transitions. Word has length 116 [2024-12-02 14:40:38,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:38,213 INFO L471 AbstractCegarLoop]: Abstraction has 4533 states and 7513 transitions. [2024-12-02 14:40:38,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:40:38,213 INFO L276 IsEmpty]: Start isEmpty. Operand 4533 states and 7513 transitions. [2024-12-02 14:40:38,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 14:40:38,216 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:38,216 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:38,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:40:38,217 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:38,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:38,217 INFO L85 PathProgramCache]: Analyzing trace with hash 286460798, now seen corresponding path program 1 times [2024-12-02 14:40:38,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:38,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999371007] [2024-12-02 14:40:38,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:38,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:38,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:38,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999371007] [2024-12-02 14:40:38,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999371007] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:38,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:38,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:40:38,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837647402] [2024-12-02 14:40:38,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:38,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:40:38,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:38,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:40:38,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:38,294 INFO L87 Difference]: Start difference. First operand 4533 states and 7513 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:40:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:38,519 INFO L93 Difference]: Finished difference Result 9072 states and 15169 transitions. [2024-12-02 14:40:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:40:38,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2024-12-02 14:40:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:38,543 INFO L225 Difference]: With dead ends: 9072 [2024-12-02 14:40:38,543 INFO L226 Difference]: Without dead ends: 4557 [2024-12-02 14:40:38,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:40:38,565 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 12 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:38,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2631 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:40:38,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2024-12-02 14:40:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 4541. [2024-12-02 14:40:38,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 3515 states have (on average 1.6204836415362731) internal successors, (5696), 3660 states have internal predecessors, (5696), 818 states have call successors, (818), 210 states have call predecessors, (818), 207 states have return successors, (993), 796 states have call predecessors, (993), 812 states have call successors, (993) [2024-12-02 14:40:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 7507 transitions. [2024-12-02 14:40:38,762 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 7507 transitions. Word has length 118 [2024-12-02 14:40:38,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:38,763 INFO L471 AbstractCegarLoop]: Abstraction has 4541 states and 7507 transitions. [2024-12-02 14:40:38,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:40:38,763 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 7507 transitions. [2024-12-02 14:40:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 14:40:38,769 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:38,769 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:38,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 14:40:38,769 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:38,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:38,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2120937732, now seen corresponding path program 1 times [2024-12-02 14:40:38,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:38,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099108542] [2024-12-02 14:40:38,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:38,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:40:38,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:38,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099108542] [2024-12-02 14:40:38,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099108542] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:38,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:38,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:40:38,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117972702] [2024-12-02 14:40:38,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:38,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:40:38,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:38,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:40:38,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:40:38,898 INFO L87 Difference]: Start difference. First operand 4541 states and 7507 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:40:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:39,565 INFO L93 Difference]: Finished difference Result 13568 states and 23019 transitions. [2024-12-02 14:40:39,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:40:39,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-12-02 14:40:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:39,612 INFO L225 Difference]: With dead ends: 13568 [2024-12-02 14:40:39,612 INFO L226 Difference]: Without dead ends: 9045 [2024-12-02 14:40:39,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:40:39,631 INFO L435 NwaCegarLoop]: 973 mSDtfsCounter, 893 mSDsluCounter, 3533 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 4506 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:39,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 4506 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:40:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9045 states. [2024-12-02 14:40:39,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9045 to 8976. [2024-12-02 14:40:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8976 states, 6951 states have (on average 1.6171773845489859) internal successors, (11241), 7236 states have internal predecessors, (11241), 1611 states have call successors, (1611), 414 states have call predecessors, (1611), 413 states have return successors, (2318), 1577 states have call predecessors, (2318), 1601 states have call successors, (2318) [2024-12-02 14:40:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 15170 transitions. [2024-12-02 14:40:39,904 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 15170 transitions. Word has length 125 [2024-12-02 14:40:39,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:39,904 INFO L471 AbstractCegarLoop]: Abstraction has 8976 states and 15170 transitions. [2024-12-02 14:40:39,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:40:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 15170 transitions. [2024-12-02 14:40:39,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-12-02 14:40:39,908 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:39,908 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:39,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 14:40:39,908 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:39,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:39,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1071718008, now seen corresponding path program 1 times [2024-12-02 14:40:39,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:39,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592229770] [2024-12-02 14:40:39,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:39,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:40:40,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:40,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592229770] [2024-12-02 14:40:40,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592229770] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:40,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:40,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:40:40,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373350460] [2024-12-02 14:40:40,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:40,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:40:40,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:40,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:40:40,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:40,006 INFO L87 Difference]: Start difference. First operand 8976 states and 15170 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:40:40,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:40,299 INFO L93 Difference]: Finished difference Result 18006 states and 30825 transitions. [2024-12-02 14:40:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:40:40,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-12-02 14:40:40,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:40,347 INFO L225 Difference]: With dead ends: 18006 [2024-12-02 14:40:40,347 INFO L226 Difference]: Without dead ends: 9048 [2024-12-02 14:40:40,409 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 [2024-12-02 14:40:40,410 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 12 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:40,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2622 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:40:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9048 states. [2024-12-02 14:40:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9048 to 9016. [2024-12-02 14:40:40,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 6987 states have (on average 1.6145699155574638) internal successors, (11281), 7264 states have internal predecessors, (11281), 1611 states have call successors, (1611), 430 states have call predecessors, (1611), 417 states have return successors, (2304), 1573 states have call predecessors, (2304), 1601 states have call successors, (2304) [2024-12-02 14:40:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 15196 transitions. [2024-12-02 14:40:40,727 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 15196 transitions. Word has length 128 [2024-12-02 14:40:40,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:40,727 INFO L471 AbstractCegarLoop]: Abstraction has 9016 states and 15196 transitions. [2024-12-02 14:40:40,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:40:40,728 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 15196 transitions. [2024-12-02 14:40:40,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 14:40:40,731 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:40,732 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:40,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 14:40:40,732 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:40,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:40,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1056986243, now seen corresponding path program 1 times [2024-12-02 14:40:40,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:40,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342760000] [2024-12-02 14:40:40,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:40,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 14:40:40,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:40,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342760000] [2024-12-02 14:40:40,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342760000] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:40,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:40,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:40:40,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004679787] [2024-12-02 14:40:40,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:40,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:40:40,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:40,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:40:40,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:40:40,853 INFO L87 Difference]: Start difference. First operand 9016 states and 15196 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:40:41,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:41,900 INFO L93 Difference]: Finished difference Result 27066 states and 47329 transitions. [2024-12-02 14:40:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:40:41,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2024-12-02 14:40:41,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:41,990 INFO L225 Difference]: With dead ends: 27066 [2024-12-02 14:40:41,990 INFO L226 Difference]: Without dead ends: 18068 [2024-12-02 14:40:42,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:40:42,043 INFO L435 NwaCegarLoop]: 1011 mSDtfsCounter, 888 mSDsluCounter, 3656 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 4667 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:42,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 4667 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:40:42,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18068 states. [2024-12-02 14:40:42,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18068 to 17967. [2024-12-02 14:40:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17967 states, 13927 states have (on average 1.611402312055719) internal successors, (22442), 14476 states have internal predecessors, (22442), 3202 states have call successors, (3202), 854 states have call predecessors, (3202), 837 states have return successors, (5629), 3140 states have call predecessors, (5629), 3184 states have call successors, (5629) [2024-12-02 14:40:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17967 states to 17967 states and 31273 transitions. [2024-12-02 14:40:42,852 INFO L78 Accepts]: Start accepts. Automaton has 17967 states and 31273 transitions. Word has length 137 [2024-12-02 14:40:42,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:42,852 INFO L471 AbstractCegarLoop]: Abstraction has 17967 states and 31273 transitions. [2024-12-02 14:40:42,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:40:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 17967 states and 31273 transitions. [2024-12-02 14:40:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 14:40:42,859 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:42,859 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:42,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:40:42,859 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:42,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:42,860 INFO L85 PathProgramCache]: Analyzing trace with hash 615513596, now seen corresponding path program 1 times [2024-12-02 14:40:42,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:42,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016474993] [2024-12-02 14:40:42,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:42,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:40:42,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:42,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016474993] [2024-12-02 14:40:42,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016474993] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:42,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:42,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:40:42,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168753224] [2024-12-02 14:40:42,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:42,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:40:42,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:42,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:40:42,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:42,963 INFO L87 Difference]: Start difference. First operand 17967 states and 31273 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:40:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:43,763 INFO L93 Difference]: Finished difference Result 36060 states and 64127 transitions. [2024-12-02 14:40:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:40:43,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2024-12-02 14:40:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:43,888 INFO L225 Difference]: With dead ends: 36060 [2024-12-02 14:40:43,888 INFO L226 Difference]: Without dead ends: 18111 [2024-12-02 14:40:44,134 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 [2024-12-02 14:40:44,135 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 11 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:44,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2625 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:40:44,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18111 states. [2024-12-02 14:40:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18111 to 18047. [2024-12-02 14:40:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18047 states, 13999 states have (on average 1.6088292020858632) internal successors, (22522), 14548 states have internal predecessors, (22522), 3202 states have call successors, (3202), 870 states have call predecessors, (3202), 845 states have return successors, (5613), 3132 states have call predecessors, (5613), 3184 states have call successors, (5613) [2024-12-02 14:40:45,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18047 states to 18047 states and 31337 transitions. [2024-12-02 14:40:45,036 INFO L78 Accepts]: Start accepts. Automaton has 18047 states and 31337 transitions. Word has length 138 [2024-12-02 14:40:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:45,037 INFO L471 AbstractCegarLoop]: Abstraction has 18047 states and 31337 transitions. [2024-12-02 14:40:45,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:40:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 18047 states and 31337 transitions. [2024-12-02 14:40:45,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 14:40:45,045 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:45,045 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:45,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:40:45,045 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:45,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:45,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1423470306, now seen corresponding path program 1 times [2024-12-02 14:40:45,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:45,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911896684] [2024-12-02 14:40:45,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:45,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 14:40:45,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:45,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911896684] [2024-12-02 14:40:45,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911896684] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:45,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:45,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:40:45,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058081537] [2024-12-02 14:40:45,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:45,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:40:45,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:45,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:40:45,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:40:45,297 INFO L87 Difference]: Start difference. First operand 18047 states and 31337 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 14:40:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:47,153 INFO L93 Difference]: Finished difference Result 54280 states and 99687 transitions. [2024-12-02 14:40:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:40:47,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 148 [2024-12-02 14:40:47,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:47,392 INFO L225 Difference]: With dead ends: 54280 [2024-12-02 14:40:47,392 INFO L226 Difference]: Without dead ends: 36251 [2024-12-02 14:40:47,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:40:47,551 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 885 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:47,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 4496 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:40:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36251 states. [2024-12-02 14:40:48,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36251 to 36086. [2024-12-02 14:40:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36086 states, 27995 states have (on average 1.605679585640293) internal successors, (44951), 29088 states have internal predecessors, (44951), 6389 states have call successors, (6389), 1734 states have call predecessors, (6389), 1701 states have return successors, (14622), 6271 states have call predecessors, (14622), 6355 states have call successors, (14622) [2024-12-02 14:40:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36086 states to 36086 states and 65962 transitions. [2024-12-02 14:40:48,870 INFO L78 Accepts]: Start accepts. Automaton has 36086 states and 65962 transitions. Word has length 148 [2024-12-02 14:40:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:48,871 INFO L471 AbstractCegarLoop]: Abstraction has 36086 states and 65962 transitions. [2024-12-02 14:40:48,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 14:40:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand 36086 states and 65962 transitions. [2024-12-02 14:40:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 14:40:48,874 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:48,874 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:48,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:40:48,875 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:48,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash -800557688, now seen corresponding path program 1 times [2024-12-02 14:40:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:48,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336194190] [2024-12-02 14:40:48,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:48,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 14:40:48,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:48,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336194190] [2024-12-02 14:40:48,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336194190] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:48,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:48,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:40:48,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446700032] [2024-12-02 14:40:48,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:48,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:40:48,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:48,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:40:48,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:48,943 INFO L87 Difference]: Start difference. First operand 36086 states and 65962 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:40:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:50,598 INFO L93 Difference]: Finished difference Result 72407 states and 137311 transitions. [2024-12-02 14:40:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:40:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2024-12-02 14:40:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:50,882 INFO L225 Difference]: With dead ends: 72407 [2024-12-02 14:40:50,882 INFO L226 Difference]: Without dead ends: 36291 [2024-12-02 14:40:51,377 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 [2024-12-02 14:40:51,377 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 9 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:51,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2622 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:40:51,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36291 states. [2024-12-02 14:40:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36291 to 36165. [2024-12-02 14:40:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36165 states, 28067 states have (on average 1.6025581643923468) internal successors, (44979), 29173 states have internal predecessors, (44979), 6382 states have call successors, (6382), 1748 states have call predecessors, (6382), 1715 states have return successors, (14522), 6250 states have call predecessors, (14522), 6348 states have call successors, (14522) [2024-12-02 14:40:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36165 states to 36165 states and 65883 transitions. [2024-12-02 14:40:52,906 INFO L78 Accepts]: Start accepts. Automaton has 36165 states and 65883 transitions. Word has length 151 [2024-12-02 14:40:52,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:52,906 INFO L471 AbstractCegarLoop]: Abstraction has 36165 states and 65883 transitions. [2024-12-02 14:40:52,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:40:52,906 INFO L276 IsEmpty]: Start isEmpty. Operand 36165 states and 65883 transitions. [2024-12-02 14:40:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 14:40:52,914 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:52,914 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:52,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 14:40:52,914 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:52,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:52,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1487389991, now seen corresponding path program 1 times [2024-12-02 14:40:52,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:52,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594174040] [2024-12-02 14:40:52,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:52,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 14:40:53,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594174040] [2024-12-02 14:40:53,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594174040] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:40:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195800615] [2024-12-02 14:40:53,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:53,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:40:53,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:40:53,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:40:53,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:40:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:53,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:40:53,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:40:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 14:40:53,540 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:40:53,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195800615] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:53,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:40:53,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2024-12-02 14:40:53,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723221542] [2024-12-02 14:40:53,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:53,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:40:53,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:53,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:40:53,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:40:53,541 INFO L87 Difference]: Start difference. First operand 36165 states and 65883 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:40:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:55,285 INFO L93 Difference]: Finished difference Result 80693 states and 151721 transitions. [2024-12-02 14:40:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:40:55,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2024-12-02 14:40:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:55,553 INFO L225 Difference]: With dead ends: 80693 [2024-12-02 14:40:55,553 INFO L226 Difference]: Without dead ends: 58357 [2024-12-02 14:40:55,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:40:55,701 INFO L435 NwaCegarLoop]: 975 mSDtfsCounter, 887 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:55,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1855 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:40:55,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58357 states. [2024-12-02 14:40:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58357 to 58113. [2024-12-02 14:40:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58113 states, 45217 states have (on average 1.6158966760289273) internal successors, (73066), 46933 states have internal predecessors, (73066), 10124 states have call successors, (10124), 2756 states have call predecessors, (10124), 2771 states have return successors, (24849), 10054 states have call predecessors, (24849), 10074 states have call successors, (24849) [2024-12-02 14:40:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58113 states to 58113 states and 108039 transitions. [2024-12-02 14:40:58,582 INFO L78 Accepts]: Start accepts. Automaton has 58113 states and 108039 transitions. Word has length 185 [2024-12-02 14:40:58,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:58,582 INFO L471 AbstractCegarLoop]: Abstraction has 58113 states and 108039 transitions. [2024-12-02 14:40:58,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:40:58,583 INFO L276 IsEmpty]: Start isEmpty. Operand 58113 states and 108039 transitions. [2024-12-02 14:40:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 14:40:58,592 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:58,592 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:58,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:40:58,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:40:58,792 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:58,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:58,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1492326631, now seen corresponding path program 1 times [2024-12-02 14:40:58,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:58,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505051967] [2024-12-02 14:40:58,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:58,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 14:40:58,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:58,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505051967] [2024-12-02 14:40:58,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505051967] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:40:58,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832904856] [2024-12-02 14:40:58,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:58,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:40:58,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:40:58,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:40:58,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:40:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:59,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 14:40:59,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:40:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:40:59,497 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:40:59,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832904856] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:59,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:40:59,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-12-02 14:40:59,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097402488] [2024-12-02 14:40:59,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:59,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:40:59,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:59,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:40:59,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:40:59,498 INFO L87 Difference]: Start difference. First operand 58113 states and 108039 transitions. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 14:41:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:41:07,130 INFO L93 Difference]: Finished difference Result 152888 states and 308511 transitions. [2024-12-02 14:41:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:41:07,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 185 [2024-12-02 14:41:07,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:41:07,777 INFO L225 Difference]: With dead ends: 152888 [2024-12-02 14:41:07,777 INFO L226 Difference]: Without dead ends: 90905 [2024-12-02 14:41:08,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-12-02 14:41:08,590 INFO L435 NwaCegarLoop]: 446 mSDtfsCounter, 2399 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 4917 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 5699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 4917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:41:08,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 2309 Invalid, 5699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 4917 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 14:41:08,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90905 states. [2024-12-02 14:41:12,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90905 to 82045. [2024-12-02 14:41:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82045 states, 63823 states have (on average 1.6129765131692337) internal successors, (102945), 66213 states have internal predecessors, (102945), 14250 states have call successors, (14250), 3732 states have call predecessors, (14250), 3971 states have return successors, (39780), 14226 states have call predecessors, (39780), 14184 states have call successors, (39780) [2024-12-02 14:41:13,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82045 states to 82045 states and 156975 transitions. [2024-12-02 14:41:13,120 INFO L78 Accepts]: Start accepts. Automaton has 82045 states and 156975 transitions. Word has length 185 [2024-12-02 14:41:13,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:41:13,120 INFO L471 AbstractCegarLoop]: Abstraction has 82045 states and 156975 transitions. [2024-12-02 14:41:13,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 14:41:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 82045 states and 156975 transitions. [2024-12-02 14:41:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-12-02 14:41:13,131 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:41:13,131 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:41:13,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:41:13,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:41:13,332 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:41:13,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:41:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash 24346984, now seen corresponding path program 1 times [2024-12-02 14:41:13,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:41:13,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464650762] [2024-12-02 14:41:13,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:13,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:41:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-12-02 14:41:13,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:41:13,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464650762] [2024-12-02 14:41:13,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464650762] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:41:13,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852259984] [2024-12-02 14:41:13,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:13,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:41:13,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:41:13,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:41:13,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:41:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:13,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 2160 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:41:13,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:41:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 14:41:14,005 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:41:14,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852259984] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:41:14,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:41:14,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 14:41:14,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829501251] [2024-12-02 14:41:14,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:41:14,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:41:14,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:41:14,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:41:14,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:41:14,006 INFO L87 Difference]: Start difference. First operand 82045 states and 156975 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 14:41:25,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:41:25,885 INFO L93 Difference]: Finished difference Result 233954 states and 541365 transitions. [2024-12-02 14:41:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:41:26,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 223 [2024-12-02 14:41:26,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:41:27,082 INFO L225 Difference]: With dead ends: 233954 [2024-12-02 14:41:27,083 INFO L226 Difference]: Without dead ends: 151831 [2024-12-02 14:41:28,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 14:41:28,352 INFO L435 NwaCegarLoop]: 594 mSDtfsCounter, 2274 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 3976 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 4747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 3976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:41:28,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 2399 Invalid, 4747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 3976 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 14:41:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151831 states. [2024-12-02 14:41:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151831 to 129141. [2024-12-02 14:41:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129141 states, 101081 states have (on average 1.5652793304379655) internal successors, (158220), 104336 states have internal predecessors, (158220), 21384 states have call successors, (21384), 5844 states have call predecessors, (21384), 6675 states have return successors, (77843), 21647 states have call predecessors, (77843), 21302 states have call successors, (77843) [2024-12-02 14:41:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129141 states to 129141 states and 257447 transitions. [2024-12-02 14:41:36,371 INFO L78 Accepts]: Start accepts. Automaton has 129141 states and 257447 transitions. Word has length 223 [2024-12-02 14:41:36,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:41:36,372 INFO L471 AbstractCegarLoop]: Abstraction has 129141 states and 257447 transitions. [2024-12-02 14:41:36,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 14:41:36,372 INFO L276 IsEmpty]: Start isEmpty. Operand 129141 states and 257447 transitions. [2024-12-02 14:41:36,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-12-02 14:41:36,384 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:41:36,384 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:41:36,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 14:41:36,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 14:41:36,584 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:41:36,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:41:36,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1412974576, now seen corresponding path program 1 times [2024-12-02 14:41:36,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:41:36,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747335576] [2024-12-02 14:41:36,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:36,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:41:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-12-02 14:41:36,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:41:36,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747335576] [2024-12-02 14:41:36,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747335576] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:41:36,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224732208] [2024-12-02 14:41:36,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:36,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:41:36,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:41:36,799 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:41:36,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:41:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:37,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 2163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:41:37,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:41:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 14:41:37,253 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:41:37,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224732208] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:41:37,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:41:37,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 14:41:37,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073912435] [2024-12-02 14:41:37,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:41:37,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:41:37,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:41:37,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:41:37,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:41:37,255 INFO L87 Difference]: Start difference. First operand 129141 states and 257447 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 14:41:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:41:50,981 INFO L93 Difference]: Finished difference Result 297294 states and 721578 transitions. [2024-12-02 14:41:50,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:41:50,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 226 [2024-12-02 14:41:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:41:52,589 INFO L225 Difference]: With dead ends: 297294 [2024-12-02 14:41:52,589 INFO L226 Difference]: Without dead ends: 167595 [2024-12-02 14:41:54,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 14:41:54,625 INFO L435 NwaCegarLoop]: 593 mSDtfsCounter, 2261 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 3911 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 4663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 3911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:41:54,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2364 Valid, 2398 Invalid, 4663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 3911 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 14:41:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167595 states. [2024-12-02 14:42:00,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167595 to 137299. [2024-12-02 14:42:01,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137299 states, 108208 states have (on average 1.5622135147124057) internal successors, (169044), 111535 states have internal predecessors, (169044), 21672 states have call successors, (21672), 6452 states have call predecessors, (21672), 7418 states have return successors, (79310), 21998 states have call predecessors, (79310), 21590 states have call successors, (79310) [2024-12-02 14:42:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137299 states to 137299 states and 270026 transitions. [2024-12-02 14:42:02,703 INFO L78 Accepts]: Start accepts. Automaton has 137299 states and 270026 transitions. Word has length 226 [2024-12-02 14:42:02,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:42:02,704 INFO L471 AbstractCegarLoop]: Abstraction has 137299 states and 270026 transitions. [2024-12-02 14:42:02,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 14:42:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 137299 states and 270026 transitions. [2024-12-02 14:42:02,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-12-02 14:42:02,721 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:42:02,721 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:42:02,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 14:42:02,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:02,921 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:42:02,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:42:02,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1202250037, now seen corresponding path program 1 times [2024-12-02 14:42:02,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:42:02,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219794861] [2024-12-02 14:42:02,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:02,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:42:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-12-02 14:42:03,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:42:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219794861] [2024-12-02 14:42:03,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219794861] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:42:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702368385] [2024-12-02 14:42:03,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:03,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:03,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:42:03,264 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:42:03,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 14:42:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:03,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:42:03,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:42:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 14:42:03,769 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:42:03,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702368385] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:42:03,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:42:03,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 14:42:03,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564847273] [2024-12-02 14:42:03,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:42:03,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:42:03,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:42:03,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:42:03,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:42:03,771 INFO L87 Difference]: Start difference. First operand 137299 states and 270026 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-02 14:42:17,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:42:17,891 INFO L93 Difference]: Finished difference Result 313610 states and 743818 transitions. [2024-12-02 14:42:17,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:42:17,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 223 [2024-12-02 14:42:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:42:19,515 INFO L225 Difference]: With dead ends: 313610 [2024-12-02 14:42:19,515 INFO L226 Difference]: Without dead ends: 175465 [2024-12-02 14:42:21,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 14:42:21,545 INFO L435 NwaCegarLoop]: 590 mSDtfsCounter, 2254 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2357 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 4607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:42:21,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2357 Valid, 2390 Invalid, 4607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 3847 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 14:42:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175465 states. [2024-12-02 14:42:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175465 to 145538. [2024-12-02 14:42:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145538 states, 115335 states have (on average 1.5576624615251224) internal successors, (179653), 118701 states have internal predecessors, (179653), 21830 states have call successors, (21830), 7204 states have call predecessors, (21830), 8372 states have return successors, (81120), 22319 states have call predecessors, (81120), 21748 states have call successors, (81120) [2024-12-02 14:42:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145538 states to 145538 states and 282603 transitions. [2024-12-02 14:42:30,091 INFO L78 Accepts]: Start accepts. Automaton has 145538 states and 282603 transitions. Word has length 223 [2024-12-02 14:42:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:42:30,092 INFO L471 AbstractCegarLoop]: Abstraction has 145538 states and 282603 transitions. [2024-12-02 14:42:30,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-02 14:42:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 145538 states and 282603 transitions. [2024-12-02 14:42:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 14:42:30,109 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:42:30,110 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:42:30,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 14:42:30,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:30,310 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:42:30,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:42:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash 22351901, now seen corresponding path program 1 times [2024-12-02 14:42:30,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:42:30,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308339497] [2024-12-02 14:42:30,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:30,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:42:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-12-02 14:42:30,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:42:30,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308339497] [2024-12-02 14:42:30,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308339497] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:42:30,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035646930] [2024-12-02 14:42:30,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:30,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:30,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:42:30,634 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:42:30,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee35c10d-1a2a-498e-b665-f7f4283ff55e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 14:42:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:30,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 14:42:30,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:42:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 14:42:31,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:42:31,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035646930] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:42:31,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:42:31,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2024-12-02 14:42:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567390158] [2024-12-02 14:42:31,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:42:31,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:42:31,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:42:31,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:42:31,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2024-12-02 14:42:31,137 INFO L87 Difference]: Start difference. First operand 145538 states and 282603 transitions. Second operand has 10 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 6 states have call successors, (28), 4 states have call predecessors, (28), 6 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2024-12-02 14:42:47,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:42:47,709 INFO L93 Difference]: Finished difference Result 336986 states and 757850 transitions. [2024-12-02 14:42:47,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 14:42:47,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 6 states have call successors, (28), 4 states have call predecessors, (28), 6 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 221 [2024-12-02 14:42:47,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:42:49,566 INFO L225 Difference]: With dead ends: 336986 [2024-12-02 14:42:49,566 INFO L226 Difference]: Without dead ends: 187498 [2024-12-02 14:42:51,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=1468, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 14:42:51,250 INFO L435 NwaCegarLoop]: 682 mSDtfsCounter, 2219 mSDsluCounter, 3473 mSDsCounter, 0 mSdLazyCounter, 7324 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 4155 SdHoareTripleChecker+Invalid, 7955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 7324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:42:51,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2321 Valid, 4155 Invalid, 7955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 7324 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 14:42:51,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187498 states.