./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.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_0952aecd-d6f4-4609-b1b0-a91bf076046d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/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_0952aecd-d6f4-4609-b1b0-a91bf076046d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/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_0952aecd-d6f4-4609-b1b0-a91bf076046d/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 b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:31:15,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:31:15,268 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:31:15,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:31:15,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:31:15,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:31:15,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:31:15,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:31:15,298 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:31:15,298 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:31:15,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:31:15,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:31:15,299 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:31:15,299 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:31:15,299 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:31:15,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:31:15,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:31:15,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:31:15,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:31:15,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:31:15,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:31:15,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:31:15,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:31:15,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:31:15,300 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:31:15,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:31:15,300 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:31:15,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:31:15,300 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:31:15,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:31:15,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:31:15,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:31:15,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:31:15,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:31:15,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:31:15,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:31:15,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:31:15,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:31:15,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:31:15,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:31:15,302 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:31:15,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:31:15,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:31:15,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:31:15,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:31:15,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:31:15,302 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:31:15,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:31:15,303 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_0952aecd-d6f4-4609-b1b0-a91bf076046d/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 -> b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d [2024-12-02 14:31:15,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:31:15,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:31:15,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:31:15,521 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:31:15,521 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:31:15,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2024-12-02 14:31:18,158 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/bin/uautomizer-verify-84ZbGMXZE1/data/e7c16406e/1c68f78f80fc48cda0530044c83d0a01/FLAG4f10e7c87 [2024-12-02 14:31:18,440 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:31:18,441 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2024-12-02 14:31:18,460 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/bin/uautomizer-verify-84ZbGMXZE1/data/e7c16406e/1c68f78f80fc48cda0530044c83d0a01/FLAG4f10e7c87 [2024-12-02 14:31:18,709 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/bin/uautomizer-verify-84ZbGMXZE1/data/e7c16406e/1c68f78f80fc48cda0530044c83d0a01 [2024-12-02 14:31:18,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:31:18,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:31:18,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:31:18,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:31:18,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:31:18,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:31:18" (1/1) ... [2024-12-02 14:31:18,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f8d87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:18, skipping insertion in model container [2024-12-02 14:31:18,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:31:18" (1/1) ... [2024-12-02 14:31:18,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:31:18,951 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_0952aecd-d6f4-4609-b1b0-a91bf076046d/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2024-12-02 14:31:19,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:31:19,142 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:31:19,148 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2024-12-02 14:31:19,149 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [169] [2024-12-02 14:31:19,149 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [532] [2024-12-02 14:31:19,149 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [627] [2024-12-02 14:31:19,149 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [636] [2024-12-02 14:31:19,149 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1303] [2024-12-02 14:31:19,150 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1338] [2024-12-02 14:31:19,150 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [1350] [2024-12-02 14:31:19,150 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1533] [2024-12-02 14:31:19,150 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3112] [2024-12-02 14:31:19,168 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_0952aecd-d6f4-4609-b1b0-a91bf076046d/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2024-12-02 14:31:19,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:31:19,260 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:31:19,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19 WrapperNode [2024-12-02 14:31:19,261 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:31:19,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:31:19,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:31:19,262 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:31:19,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,284 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,322 INFO L138 Inliner]: procedures = 95, calls = 347, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 918 [2024-12-02 14:31:19,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:31:19,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:31:19,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:31:19,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:31:19,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,336 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,360 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 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 14:31:19,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,377 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:31:19,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:31:19,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:31:19,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:31:19,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (1/1) ... [2024-12-02 14:31:19,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:31:19,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:31:19,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:31:19,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952aecd-d6f4-4609-b1b0-a91bf076046d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:31:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:31:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 14:31:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 14:31:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-12-02 14:31:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-12-02 14:31:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 14:31:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 14:31:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 14:31:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 14:31:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 14:31:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 14:31:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-12-02 14:31:19,479 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-12-02 14:31:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 14:31:19,479 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 14:31:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 14:31:19,479 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 14:31:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-12-02 14:31:19,479 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-12-02 14:31:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 14:31:19,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 14:31:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 14:31:19,479 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 14:31:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 14:31:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 14:31:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 14:31:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 14:31:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 14:31:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 14:31:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 14:31:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 14:31:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 14:31:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 14:31:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 14:31:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 14:31:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 14:31:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 14:31:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 14:31:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 14:31:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:31:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 14:31:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 14:31:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 14:31:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 14:31:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 14:31:19,482 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 14:31:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 14:31:19,482 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 14:31:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 14:31:19,482 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 14:31:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 14:31:19,482 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 14:31:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-12-02 14:31:19,482 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-12-02 14:31:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:31:19,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:31:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 14:31:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 14:31:19,641 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:31:19,643 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:31:20,756 INFO L? ?]: Removed 462 outVars from TransFormulas that were not future-live. [2024-12-02 14:31:20,756 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:31:20,778 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:31:20,778 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:31:20,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:31:20 BoogieIcfgContainer [2024-12-02 14:31:20,779 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:31:20,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:31:20,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:31:20,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:31:20,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:31:18" (1/3) ... [2024-12-02 14:31:20,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9d319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:31:20, skipping insertion in model container [2024-12-02 14:31:20,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:19" (2/3) ... [2024-12-02 14:31:20,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9d319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:31:20, skipping insertion in model container [2024-12-02 14:31:20,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:31:20" (3/3) ... [2024-12-02 14:31:20,787 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product30.cil.c [2024-12-02 14:31:20,799 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:31:20,801 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product30.cil.c that has 26 procedures, 580 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:31:20,865 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:31:20,877 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;@2f09234b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:31:20,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:31:20,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 580 states, 455 states have (on average 1.6945054945054945) internal successors, (771), 478 states have internal predecessors, (771), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 14:31:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 14:31:20,895 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:20,896 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:20,896 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:20,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:20,901 INFO L85 PathProgramCache]: Analyzing trace with hash -328147531, now seen corresponding path program 1 times [2024-12-02 14:31:20,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:20,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927547304] [2024-12-02 14:31:20,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:20,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:21,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:21,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927547304] [2024-12-02 14:31:21,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927547304] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:21,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:21,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:31:21,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9034692] [2024-12-02 14:31:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:21,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:31:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:21,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:31:21,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:31:21,359 INFO L87 Difference]: Start difference. First operand has 580 states, 455 states have (on average 1.6945054945054945) internal successors, (771), 478 states have internal predecessors, (771), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:21,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:21,498 INFO L93 Difference]: Finished difference Result 1140 states and 1909 transitions. [2024-12-02 14:31:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:31:21,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-12-02 14:31:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:21,517 INFO L225 Difference]: With dead ends: 1140 [2024-12-02 14:31:21,517 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 14:31:21,524 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 14:31:21,526 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 5 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:21,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2834 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 14:31:21,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 14:31:21,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 449 states have (on average 1.6904231625835189) internal successors, (759), 470 states have internal predecessors, (759), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 950 transitions. [2024-12-02 14:31:21,602 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 950 transitions. Word has length 60 [2024-12-02 14:31:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:21,602 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 950 transitions. [2024-12-02 14:31:21,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:21,603 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 950 transitions. [2024-12-02 14:31:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 14:31:21,607 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:21,607 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:21,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:31:21,607 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:21,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:21,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1456505936, now seen corresponding path program 1 times [2024-12-02 14:31:21,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:21,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818293837] [2024-12-02 14:31:21,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:21,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:21,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:21,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818293837] [2024-12-02 14:31:21,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818293837] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:21,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:21,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:31:21,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183097316] [2024-12-02 14:31:21,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:21,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:31:21,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:21,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:31:21,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:31:21,819 INFO L87 Difference]: Start difference. First operand 572 states and 950 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:21,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:21,900 INFO L93 Difference]: Finished difference Result 1126 states and 1877 transitions. [2024-12-02 14:31:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:31:21,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-12-02 14:31:21,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:21,907 INFO L225 Difference]: With dead ends: 1126 [2024-12-02 14:31:21,907 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 14:31:21,911 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 14:31:21,912 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 4 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:21,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2813 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 14:31:21,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 14:31:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 449 states have (on average 1.688195991091314) internal successors, (758), 470 states have internal predecessors, (758), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 949 transitions. [2024-12-02 14:31:21,951 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 949 transitions. Word has length 62 [2024-12-02 14:31:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:21,952 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 949 transitions. [2024-12-02 14:31:21,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:21,952 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 949 transitions. [2024-12-02 14:31:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 14:31:21,955 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:21,955 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:21,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:31:21,955 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:21,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1444189455, now seen corresponding path program 1 times [2024-12-02 14:31:21,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729403561] [2024-12-02 14:31:21,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:22,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:22,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729403561] [2024-12-02 14:31:22,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729403561] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:22,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:22,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:31:22,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632981353] [2024-12-02 14:31:22,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:22,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:31:22,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:22,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:31:22,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:31:22,148 INFO L87 Difference]: Start difference. First operand 572 states and 949 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:22,220 INFO L93 Difference]: Finished difference Result 1126 states and 1876 transitions. [2024-12-02 14:31:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:31:22,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-12-02 14:31:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:22,228 INFO L225 Difference]: With dead ends: 1126 [2024-12-02 14:31:22,228 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 14:31:22,231 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 14:31:22,232 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 3 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2813 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 14:31:22,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2813 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 14:31:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 14:31:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 449 states have (on average 1.6859688195991092) internal successors, (757), 470 states have internal predecessors, (757), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:22,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 948 transitions. [2024-12-02 14:31:22,267 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 948 transitions. Word has length 63 [2024-12-02 14:31:22,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:22,267 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 948 transitions. [2024-12-02 14:31:22,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:22,267 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 948 transitions. [2024-12-02 14:31:22,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:31:22,269 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:22,270 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:22,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:31:22,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:22,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:22,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1093415980, now seen corresponding path program 1 times [2024-12-02 14:31:22,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:22,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383867143] [2024-12-02 14:31:22,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:22,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:22,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:22,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383867143] [2024-12-02 14:31:22,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383867143] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:22,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:22,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:31:22,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797993569] [2024-12-02 14:31:22,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:22,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:31:22,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:22,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:31:22,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:31:22,442 INFO L87 Difference]: Start difference. First operand 572 states and 948 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:22,507 INFO L93 Difference]: Finished difference Result 1126 states and 1875 transitions. [2024-12-02 14:31:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:31:22,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-12-02 14:31:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:22,514 INFO L225 Difference]: With dead ends: 1126 [2024-12-02 14:31:22,514 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 14:31:22,517 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 14:31:22,518 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 2 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:22,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2813 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 14:31:22,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 14:31:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 449 states have (on average 1.6837416481069043) internal successors, (756), 470 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 947 transitions. [2024-12-02 14:31:22,552 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 947 transitions. Word has length 64 [2024-12-02 14:31:22,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:22,552 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 947 transitions. [2024-12-02 14:31:22,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 947 transitions. [2024-12-02 14:31:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 14:31:22,554 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:22,554 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:22,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:31:22,555 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:22,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:22,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1159589717, now seen corresponding path program 1 times [2024-12-02 14:31:22,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:22,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531337631] [2024-12-02 14:31:22,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:22,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:22,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:22,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531337631] [2024-12-02 14:31:22,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531337631] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:22,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:22,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:31:22,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831153760] [2024-12-02 14:31:22,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:22,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:31:22,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:22,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:31:22,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:31:22,713 INFO L87 Difference]: Start difference. First operand 572 states and 947 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:22,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:22,771 INFO L93 Difference]: Finished difference Result 1126 states and 1874 transitions. [2024-12-02 14:31:22,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:31:22,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-12-02 14:31:22,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:22,778 INFO L225 Difference]: With dead ends: 1126 [2024-12-02 14:31:22,778 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 14:31:22,782 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 14:31:22,782 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 1 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:22,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2813 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:22,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 14:31:22,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 14:31:22,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 449 states have (on average 1.6815144766146994) internal successors, (755), 470 states have internal predecessors, (755), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 946 transitions. [2024-12-02 14:31:22,816 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 946 transitions. Word has length 65 [2024-12-02 14:31:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:22,817 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 946 transitions. [2024-12-02 14:31:22,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:22,817 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 946 transitions. [2024-12-02 14:31:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 14:31:22,819 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:22,819 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:22,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:31:22,819 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:22,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2042715144, now seen corresponding path program 1 times [2024-12-02 14:31:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:22,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598986368] [2024-12-02 14:31:22,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:22,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:23,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:23,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598986368] [2024-12-02 14:31:23,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598986368] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:23,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:23,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:31:23,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221483180] [2024-12-02 14:31:23,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:23,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:31:23,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:23,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:31:23,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:23,051 INFO L87 Difference]: Start difference. First operand 572 states and 946 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:31:23,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:23,181 INFO L93 Difference]: Finished difference Result 1092 states and 1806 transitions. [2024-12-02 14:31:23,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:31:23,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-12-02 14:31:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:23,188 INFO L225 Difference]: With dead ends: 1092 [2024-12-02 14:31:23,188 INFO L226 Difference]: Without dead ends: 587 [2024-12-02 14:31:23,191 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 14:31:23,192 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 91 mSDsluCounter, 4599 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5535 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:23,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5535 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:31:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-12-02 14:31:23,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2024-12-02 14:31:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 459 states have (on average 1.6775599128540306) internal successors, (770), 482 states have internal predecessors, (770), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2024-12-02 14:31:23,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 965 transitions. [2024-12-02 14:31:23,224 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 965 transitions. Word has length 66 [2024-12-02 14:31:23,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:23,225 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 965 transitions. [2024-12-02 14:31:23,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:31:23,225 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 965 transitions. [2024-12-02 14:31:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 14:31:23,227 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:23,227 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:23,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:31:23,228 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:23,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:23,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2050474503, now seen corresponding path program 1 times [2024-12-02 14:31:23,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:23,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932082291] [2024-12-02 14:31:23,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:23,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:23,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:23,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932082291] [2024-12-02 14:31:23,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932082291] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:23,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:23,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:31:23,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006956275] [2024-12-02 14:31:23,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:23,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:31:23,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:23,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:31:23,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:31:23,339 INFO L87 Difference]: Start difference. First operand 585 states and 965 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:23,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:23,390 INFO L93 Difference]: Finished difference Result 1144 states and 1900 transitions. [2024-12-02 14:31:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:31:23,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-12-02 14:31:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:23,396 INFO L225 Difference]: With dead ends: 1144 [2024-12-02 14:31:23,396 INFO L226 Difference]: Without dead ends: 566 [2024-12-02 14:31:23,400 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 14:31:23,400 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 0 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:23,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2815 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-12-02 14:31:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-12-02 14:31:23,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 443 states have (on average 1.672686230248307) internal successors, (741), 464 states have internal predecessors, (741), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 932 transitions. [2024-12-02 14:31:23,428 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 932 transitions. Word has length 66 [2024-12-02 14:31:23,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:23,428 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 932 transitions. [2024-12-02 14:31:23,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 932 transitions. [2024-12-02 14:31:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 14:31:23,430 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:23,430 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:23,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:31:23,431 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:23,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 331499940, now seen corresponding path program 1 times [2024-12-02 14:31:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:23,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484900872] [2024-12-02 14:31:23,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:23,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:23,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:23,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:23,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484900872] [2024-12-02 14:31:23,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484900872] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:23,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:23,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:31:23,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308636047] [2024-12-02 14:31:23,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:23,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:31:23,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:23,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:31:23,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:31:23,621 INFO L87 Difference]: Start difference. First operand 566 states and 932 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:23,849 INFO L93 Difference]: Finished difference Result 1089 states and 1798 transitions. [2024-12-02 14:31:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:31:23,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-12-02 14:31:23,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:23,856 INFO L225 Difference]: With dead ends: 1089 [2024-12-02 14:31:23,856 INFO L226 Difference]: Without dead ends: 575 [2024-12-02 14:31:23,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:23,859 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 55 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4416 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:23,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4416 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:31:23,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-12-02 14:31:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 566. [2024-12-02 14:31:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 443 states have (on average 1.6636568848758464) internal successors, (737), 464 states have internal predecessors, (737), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 928 transitions. [2024-12-02 14:31:23,881 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 928 transitions. Word has length 67 [2024-12-02 14:31:23,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:23,882 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 928 transitions. [2024-12-02 14:31:23,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 928 transitions. [2024-12-02 14:31:23,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 14:31:23,883 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:23,883 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:23,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:31:23,884 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:23,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:23,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2017944693, now seen corresponding path program 1 times [2024-12-02 14:31:23,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:23,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401782019] [2024-12-02 14:31:23,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:24,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:24,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401782019] [2024-12-02 14:31:24,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401782019] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:24,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:24,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:31:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487583544] [2024-12-02 14:31:24,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:24,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:31:24,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:24,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:31:24,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:31:24,072 INFO L87 Difference]: Start difference. First operand 566 states and 928 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:24,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:24,277 INFO L93 Difference]: Finished difference Result 1089 states and 1794 transitions. [2024-12-02 14:31:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:31:24,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-12-02 14:31:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:24,283 INFO L225 Difference]: With dead ends: 1089 [2024-12-02 14:31:24,284 INFO L226 Difference]: Without dead ends: 575 [2024-12-02 14:31:24,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:24,307 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 54 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4416 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:24,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4416 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:31:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-12-02 14:31:24,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 566. [2024-12-02 14:31:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 443 states have (on average 1.654627539503386) internal successors, (733), 464 states have internal predecessors, (733), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 924 transitions. [2024-12-02 14:31:24,334 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 924 transitions. Word has length 68 [2024-12-02 14:31:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:24,334 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 924 transitions. [2024-12-02 14:31:24,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 924 transitions. [2024-12-02 14:31:24,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 14:31:24,336 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:24,336 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:24,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:31:24,336 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:24,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash -916476577, now seen corresponding path program 1 times [2024-12-02 14:31:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:24,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996431450] [2024-12-02 14:31:24,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:24,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:24,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:24,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996431450] [2024-12-02 14:31:24,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996431450] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:24,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:24,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:31:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375621244] [2024-12-02 14:31:24,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:24,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:31:24,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:24,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:31:24,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:31:24,493 INFO L87 Difference]: Start difference. First operand 566 states and 924 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:24,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:24,693 INFO L93 Difference]: Finished difference Result 1089 states and 1790 transitions. [2024-12-02 14:31:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:31:24,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-12-02 14:31:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:24,700 INFO L225 Difference]: With dead ends: 1089 [2024-12-02 14:31:24,700 INFO L226 Difference]: Without dead ends: 575 [2024-12-02 14:31:24,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:24,704 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 53 mSDsluCounter, 3510 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4398 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:24,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4398 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:31:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-12-02 14:31:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 566. [2024-12-02 14:31:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 443 states have (on average 1.6455981941309255) internal successors, (729), 464 states have internal predecessors, (729), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 920 transitions. [2024-12-02 14:31:24,730 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 920 transitions. Word has length 69 [2024-12-02 14:31:24,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:24,730 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 920 transitions. [2024-12-02 14:31:24,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:24,730 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 920 transitions. [2024-12-02 14:31:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 14:31:24,732 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:24,733 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:24,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:31:24,733 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:24,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:24,733 INFO L85 PathProgramCache]: Analyzing trace with hash 957726943, now seen corresponding path program 1 times [2024-12-02 14:31:24,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:24,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001659933] [2024-12-02 14:31:24,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:24,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:24,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:24,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001659933] [2024-12-02 14:31:24,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001659933] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:24,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:24,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:31:24,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460310733] [2024-12-02 14:31:24,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:24,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:31:24,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:24,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:31:24,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:24,891 INFO L87 Difference]: Start difference. First operand 566 states and 920 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:31:24,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:24,964 INFO L93 Difference]: Finished difference Result 1080 states and 1772 transitions. [2024-12-02 14:31:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:31:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2024-12-02 14:31:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:24,970 INFO L225 Difference]: With dead ends: 1080 [2024-12-02 14:31:24,970 INFO L226 Difference]: Without dead ends: 545 [2024-12-02 14:31:24,973 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 14:31:24,974 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 84 mSDsluCounter, 4472 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5381 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:24,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5381 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-12-02 14:31:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-12-02 14:31:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 422 states have (on average 1.646919431279621) internal successors, (695), 443 states have internal predecessors, (695), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 886 transitions. [2024-12-02 14:31:24,996 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 886 transitions. Word has length 69 [2024-12-02 14:31:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:24,997 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 886 transitions. [2024-12-02 14:31:24,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:31:24,997 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 886 transitions. [2024-12-02 14:31:24,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 14:31:24,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:24,999 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:24,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:31:24,999 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:24,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:24,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1068856496, now seen corresponding path program 1 times [2024-12-02 14:31:24,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:24,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201286932] [2024-12-02 14:31:25,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:25,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:25,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:25,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201286932] [2024-12-02 14:31:25,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201286932] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:25,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:25,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:31:25,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817827949] [2024-12-02 14:31:25,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:25,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:31:25,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:25,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:31:25,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:31:25,147 INFO L87 Difference]: Start difference. First operand 545 states and 886 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:25,241 INFO L93 Difference]: Finished difference Result 1059 states and 1738 transitions. [2024-12-02 14:31:25,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:31:25,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-12-02 14:31:25,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:25,247 INFO L225 Difference]: With dead ends: 1059 [2024-12-02 14:31:25,247 INFO L226 Difference]: Without dead ends: 545 [2024-12-02 14:31:25,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:25,251 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 17 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4336 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:25,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4336 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-12-02 14:31:25,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-12-02 14:31:25,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 422 states have (on average 1.6445497630331753) internal successors, (694), 443 states have internal predecessors, (694), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 885 transitions. [2024-12-02 14:31:25,277 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 885 transitions. Word has length 70 [2024-12-02 14:31:25,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:25,277 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 885 transitions. [2024-12-02 14:31:25,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:25,277 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 885 transitions. [2024-12-02 14:31:25,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 14:31:25,279 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:25,279 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:25,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:31:25,279 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:25,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:25,280 INFO L85 PathProgramCache]: Analyzing trace with hash -877300454, now seen corresponding path program 1 times [2024-12-02 14:31:25,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:25,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232082954] [2024-12-02 14:31:25,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:25,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:25,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232082954] [2024-12-02 14:31:25,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232082954] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:25,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:25,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:31:25,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888539737] [2024-12-02 14:31:25,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:25,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:31:25,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:25,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:31:25,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:31:25,453 INFO L87 Difference]: Start difference. First operand 545 states and 885 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:25,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:25,542 INFO L93 Difference]: Finished difference Result 1059 states and 1737 transitions. [2024-12-02 14:31:25,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:31:25,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2024-12-02 14:31:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:25,549 INFO L225 Difference]: With dead ends: 1059 [2024-12-02 14:31:25,549 INFO L226 Difference]: Without dead ends: 545 [2024-12-02 14:31:25,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:25,553 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 16 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4336 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:25,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4336 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-12-02 14:31:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-12-02 14:31:25,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 422 states have (on average 1.6421800947867298) internal successors, (693), 443 states have internal predecessors, (693), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 884 transitions. [2024-12-02 14:31:25,580 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 884 transitions. Word has length 71 [2024-12-02 14:31:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:25,580 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 884 transitions. [2024-12-02 14:31:25,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:25,580 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 884 transitions. [2024-12-02 14:31:25,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 14:31:25,582 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:25,582 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:25,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:31:25,582 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:25,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1386335787, now seen corresponding path program 1 times [2024-12-02 14:31:25,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:25,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854963405] [2024-12-02 14:31:25,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:25,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:25,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:25,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854963405] [2024-12-02 14:31:25,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854963405] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:25,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:25,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:31:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972248506] [2024-12-02 14:31:25,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:25,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:31:25,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:25,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:31:25,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:31:25,701 INFO L87 Difference]: Start difference. First operand 545 states and 884 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:25,754 INFO L93 Difference]: Finished difference Result 1053 states and 1725 transitions. [2024-12-02 14:31:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:31:25,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-12-02 14:31:25,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:25,761 INFO L225 Difference]: With dead ends: 1053 [2024-12-02 14:31:25,761 INFO L226 Difference]: Without dead ends: 545 [2024-12-02 14:31:25,764 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 14:31:25,764 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 5 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:25,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2606 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-12-02 14:31:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-12-02 14:31:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 422 states have (on average 1.6398104265402844) internal successors, (692), 443 states have internal predecessors, (692), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:31:25,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 883 transitions. [2024-12-02 14:31:25,789 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 883 transitions. Word has length 72 [2024-12-02 14:31:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:25,790 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 883 transitions. [2024-12-02 14:31:25,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:31:25,790 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 883 transitions. [2024-12-02 14:31:25,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 14:31:25,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:25,792 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:25,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:31:25,792 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:25,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1544871419, now seen corresponding path program 1 times [2024-12-02 14:31:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:25,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745966777] [2024-12-02 14:31:25,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:25,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:26,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:26,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745966777] [2024-12-02 14:31:26,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745966777] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:26,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:26,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:31:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303903853] [2024-12-02 14:31:26,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:26,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:31:26,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:26,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:31:26,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:31:26,021 INFO L87 Difference]: Start difference. First operand 545 states and 883 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-12-02 14:31:28,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:28,445 INFO L93 Difference]: Finished difference Result 1684 states and 2790 transitions. [2024-12-02 14:31:28,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:31:28,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 73 [2024-12-02 14:31:28,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:28,456 INFO L225 Difference]: With dead ends: 1684 [2024-12-02 14:31:28,457 INFO L226 Difference]: Without dead ends: 1184 [2024-12-02 14:31:28,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:31:28,460 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 3268 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3335 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:28,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3335 Valid, 1035 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 14:31:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-12-02 14:31:28,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1062. [2024-12-02 14:31:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 827 states have (on average 1.6590084643288996) internal successors, (1372), 857 states have internal predecessors, (1372), 190 states have call successors, (190), 43 states have call predecessors, (190), 44 states have return successors, (192), 174 states have call predecessors, (192), 185 states have call successors, (192) [2024-12-02 14:31:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1754 transitions. [2024-12-02 14:31:28,521 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1754 transitions. Word has length 73 [2024-12-02 14:31:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:28,521 INFO L471 AbstractCegarLoop]: Abstraction has 1062 states and 1754 transitions. [2024-12-02 14:31:28,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-12-02 14:31:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1754 transitions. [2024-12-02 14:31:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 14:31:28,526 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:28,526 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:28,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 14:31:28,526 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:28,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:28,526 INFO L85 PathProgramCache]: Analyzing trace with hash -166158167, now seen corresponding path program 1 times [2024-12-02 14:31:28,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:28,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936681359] [2024-12-02 14:31:28,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:28,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:28,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:28,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936681359] [2024-12-02 14:31:28,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936681359] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:28,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:28,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:31:28,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580509] [2024-12-02 14:31:28,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:28,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:31:28,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:28,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:31:28,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:31:28,836 INFO L87 Difference]: Start difference. First operand 1062 states and 1754 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 14:31:30,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:30,505 INFO L93 Difference]: Finished difference Result 2087 states and 3510 transitions. [2024-12-02 14:31:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:31:30,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 112 [2024-12-02 14:31:30,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:30,514 INFO L225 Difference]: With dead ends: 2087 [2024-12-02 14:31:30,514 INFO L226 Difference]: Without dead ends: 1070 [2024-12-02 14:31:30,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:31:30,519 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 1345 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 3227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:30,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 1606 Invalid, 3227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 14:31:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2024-12-02 14:31:30,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1070. [2024-12-02 14:31:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 833 states have (on average 1.6542617046818728) internal successors, (1378), 863 states have internal predecessors, (1378), 190 states have call successors, (190), 43 states have call predecessors, (190), 46 states have return successors, (224), 176 states have call predecessors, (224), 185 states have call successors, (224) [2024-12-02 14:31:30,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1792 transitions. [2024-12-02 14:31:30,582 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1792 transitions. Word has length 112 [2024-12-02 14:31:30,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:30,582 INFO L471 AbstractCegarLoop]: Abstraction has 1070 states and 1792 transitions. [2024-12-02 14:31:30,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 14:31:30,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1792 transitions. [2024-12-02 14:31:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 14:31:30,586 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:30,586 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:30,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 14:31:30,586 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:30,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:30,587 INFO L85 PathProgramCache]: Analyzing trace with hash -781510245, now seen corresponding path program 1 times [2024-12-02 14:31:30,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:30,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987268615] [2024-12-02 14:31:30,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:30,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:30,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:30,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987268615] [2024-12-02 14:31:30,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987268615] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:30,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:30,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:31:30,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287672876] [2024-12-02 14:31:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:30,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:31:30,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:30,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:31:30,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:30,822 INFO L87 Difference]: Start difference. First operand 1070 states and 1792 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 14:31:33,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:33,854 INFO L93 Difference]: Finished difference Result 3959 states and 6801 transitions. [2024-12-02 14:31:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 14:31:33,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2024-12-02 14:31:33,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:33,873 INFO L225 Difference]: With dead ends: 3959 [2024-12-02 14:31:33,873 INFO L226 Difference]: Without dead ends: 2934 [2024-12-02 14:31:33,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:31:33,879 INFO L435 NwaCegarLoop]: 615 mSDtfsCounter, 2437 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2515 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 5734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:33,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2515 Valid, 2627 Invalid, 5734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 14:31:33,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2024-12-02 14:31:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2824. [2024-12-02 14:31:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2190 states have (on average 1.6515981735159817) internal successors, (3617), 2270 states have internal predecessors, (3617), 506 states have call successors, (506), 117 states have call predecessors, (506), 127 states have return successors, (581), 471 states have call predecessors, (581), 501 states have call successors, (581) [2024-12-02 14:31:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 4704 transitions. [2024-12-02 14:31:34,018 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 4704 transitions. Word has length 113 [2024-12-02 14:31:34,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:34,018 INFO L471 AbstractCegarLoop]: Abstraction has 2824 states and 4704 transitions. [2024-12-02 14:31:34,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 14:31:34,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 4704 transitions. [2024-12-02 14:31:34,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 14:31:34,022 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:34,022 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] [2024-12-02 14:31:34,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 14:31:34,022 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:34,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1878907767, now seen corresponding path program 1 times [2024-12-02 14:31:34,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:34,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33852488] [2024-12-02 14:31:34,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:34,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:34,167 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 14:31:34,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:34,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33852488] [2024-12-02 14:31:34,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33852488] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:34,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:34,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:31:34,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918302404] [2024-12-02 14:31:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:34,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:31:34,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:34,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:31:34,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:31:34,168 INFO L87 Difference]: Start difference. First operand 2824 states and 4704 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-12-02 14:31:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:36,585 INFO L93 Difference]: Finished difference Result 8233 states and 13964 transitions. [2024-12-02 14:31:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:31:36,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 115 [2024-12-02 14:31:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:36,615 INFO L225 Difference]: With dead ends: 8233 [2024-12-02 14:31:36,615 INFO L226 Difference]: Without dead ends: 5456 [2024-12-02 14:31:36,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:31:36,627 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 3465 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 3474 mSolverCounterSat, 1068 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 4542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1068 IncrementalHoareTripleChecker+Valid, 3474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:36,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3501 Valid, 2218 Invalid, 4542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1068 Valid, 3474 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 14:31:36,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5456 states. [2024-12-02 14:31:36,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5456 to 4789. [2024-12-02 14:31:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 3583 states have (on average 1.6368964554842311) internal successors, (5865), 3765 states have internal predecessors, (5865), 995 states have call successors, (995), 181 states have call predecessors, (995), 210 states have return successors, (1176), 962 states have call predecessors, (1176), 990 states have call successors, (1176) [2024-12-02 14:31:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 8036 transitions. [2024-12-02 14:31:36,882 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 8036 transitions. Word has length 115 [2024-12-02 14:31:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:36,882 INFO L471 AbstractCegarLoop]: Abstraction has 4789 states and 8036 transitions. [2024-12-02 14:31:36,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-12-02 14:31:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 8036 transitions. [2024-12-02 14:31:36,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 14:31:36,885 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:36,885 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] [2024-12-02 14:31:36,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:31:36,886 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:36,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1438865760, now seen corresponding path program 1 times [2024-12-02 14:31:36,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:36,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142408464] [2024-12-02 14:31:36,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:36,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:37,223 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 14:31:37,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:37,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142408464] [2024-12-02 14:31:37,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142408464] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:37,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:37,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:31:37,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694490660] [2024-12-02 14:31:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:37,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:31:37,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:37,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:31:37,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:31:37,225 INFO L87 Difference]: Start difference. First operand 4789 states and 8036 transitions. Second operand has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 7 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-12-02 14:31:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:42,442 INFO L93 Difference]: Finished difference Result 15093 states and 25274 transitions. [2024-12-02 14:31:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 14:31:42,443 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 7 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 115 [2024-12-02 14:31:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:42,503 INFO L225 Difference]: With dead ends: 15093 [2024-12-02 14:31:42,503 INFO L226 Difference]: Without dead ends: 10343 [2024-12-02 14:31:42,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 14:31:42,526 INFO L435 NwaCegarLoop]: 762 mSDtfsCounter, 3020 mSDsluCounter, 6393 mSDsCounter, 0 mSdLazyCounter, 11932 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3098 SdHoareTripleChecker+Valid, 7155 SdHoareTripleChecker+Invalid, 12951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 11932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:42,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3098 Valid, 7155 Invalid, 12951 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1019 Valid, 11932 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-12-02 14:31:42,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10343 states. [2024-12-02 14:31:43,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10343 to 10107. [2024-12-02 14:31:43,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10107 states, 7317 states have (on average 1.5957359573595735) internal successors, (11676), 7728 states have internal predecessors, (11676), 2357 states have call successors, (2357), 360 states have call predecessors, (2357), 432 states have return successors, (2779), 2291 states have call predecessors, (2779), 2352 states have call successors, (2779) [2024-12-02 14:31:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10107 states to 10107 states and 16812 transitions. [2024-12-02 14:31:43,425 INFO L78 Accepts]: Start accepts. Automaton has 10107 states and 16812 transitions. Word has length 115 [2024-12-02 14:31:43,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:43,426 INFO L471 AbstractCegarLoop]: Abstraction has 10107 states and 16812 transitions. [2024-12-02 14:31:43,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 7 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-12-02 14:31:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 10107 states and 16812 transitions. [2024-12-02 14:31:43,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:31:43,431 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:43,431 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 14:31:43,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:31:43,432 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:43,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:43,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1776530755, now seen corresponding path program 1 times [2024-12-02 14:31:43,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:43,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351749314] [2024-12-02 14:31:43,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:43,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:43,664 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 14:31:43,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:43,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351749314] [2024-12-02 14:31:43,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351749314] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:43,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:43,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:31:43,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537456568] [2024-12-02 14:31:43,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:43,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:31:43,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:43,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:31:43,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:31:43,666 INFO L87 Difference]: Start difference. First operand 10107 states and 16812 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-12-02 14:31:47,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:47,435 INFO L93 Difference]: Finished difference Result 34704 states and 59491 transitions. [2024-12-02 14:31:47,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:31:47,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 116 [2024-12-02 14:31:47,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:47,620 INFO L225 Difference]: With dead ends: 34704 [2024-12-02 14:31:47,620 INFO L226 Difference]: Without dead ends: 24645 [2024-12-02 14:31:47,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:31:47,691 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 3478 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 3437 mSolverCounterSat, 1091 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3515 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 4528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1091 IncrementalHoareTripleChecker+Valid, 3437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:47,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3515 Valid, 2231 Invalid, 4528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1091 Valid, 3437 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 14:31:47,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24645 states. [2024-12-02 14:31:49,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24645 to 21736. [2024-12-02 14:31:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21736 states, 14889 states have (on average 1.5779434481832224) internal successors, (23494), 15965 states have internal predecessors, (23494), 6018 states have call successors, (6018), 608 states have call predecessors, (6018), 828 states have return successors, (7366), 6030 states have call predecessors, (7366), 6013 states have call successors, (7366) [2024-12-02 14:31:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21736 states to 21736 states and 36878 transitions. [2024-12-02 14:31:49,280 INFO L78 Accepts]: Start accepts. Automaton has 21736 states and 36878 transitions. Word has length 116 [2024-12-02 14:31:49,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:49,280 INFO L471 AbstractCegarLoop]: Abstraction has 21736 states and 36878 transitions. [2024-12-02 14:31:49,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-12-02 14:31:49,281 INFO L276 IsEmpty]: Start isEmpty. Operand 21736 states and 36878 transitions. [2024-12-02 14:31:49,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:31:49,283 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:49,283 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] [2024-12-02 14:31:49,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:31:49,283 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:49,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash -224612572, now seen corresponding path program 1 times [2024-12-02 14:31:49,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:49,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165468100] [2024-12-02 14:31:49,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:49,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:49,478 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 14:31:49,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:49,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165468100] [2024-12-02 14:31:49,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165468100] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:49,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:49,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:31:49,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876501141] [2024-12-02 14:31:49,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:49,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:31:49,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:49,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:31:49,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:31:49,479 INFO L87 Difference]: Start difference. First operand 21736 states and 36878 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-12-02 14:31:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:55,890 INFO L93 Difference]: Finished difference Result 86679 states and 152116 transitions. [2024-12-02 14:31:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:31:55,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 117 [2024-12-02 14:31:55,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:56,199 INFO L225 Difference]: With dead ends: 86679 [2024-12-02 14:31:56,199 INFO L226 Difference]: Without dead ends: 64993 [2024-12-02 14:31:56,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:31:56,295 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 3490 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 3446 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 4539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 3446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:56,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3528 Valid, 2252 Invalid, 4539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1093 Valid, 3446 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 14:31:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64993 states. [2024-12-02 14:32:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64993 to 57495. [2024-12-02 14:32:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57495 states, 37311 states have (on average 1.565516871700035) internal successors, (58411), 40444 states have internal predecessors, (58411), 18293 states have call successors, (18293), 1104 states have call predecessors, (18293), 1890 states have return successors, (23547), 18725 states have call predecessors, (23547), 18288 states have call successors, (23547) [2024-12-02 14:32:00,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57495 states to 57495 states and 100251 transitions. [2024-12-02 14:32:00,873 INFO L78 Accepts]: Start accepts. Automaton has 57495 states and 100251 transitions. Word has length 117 [2024-12-02 14:32:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:32:00,873 INFO L471 AbstractCegarLoop]: Abstraction has 57495 states and 100251 transitions. [2024-12-02 14:32:00,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-12-02 14:32:00,874 INFO L276 IsEmpty]: Start isEmpty. Operand 57495 states and 100251 transitions. [2024-12-02 14:32:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 14:32:00,876 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:32:00,876 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 14:32:00,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 14:32:00,876 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:32:00,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:32:00,877 INFO L85 PathProgramCache]: Analyzing trace with hash -981558344, now seen corresponding path program 1 times [2024-12-02 14:32:00,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:32:00,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381665183] [2024-12-02 14:32:00,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:32:00,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:32:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:32:01,055 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 14:32:01,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:32:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381665183] [2024-12-02 14:32:01,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381665183] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:32:01,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:32:01,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:32:01,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900952498] [2024-12-02 14:32:01,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:32:01,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:32:01,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:32:01,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:32:01,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:32:01,057 INFO L87 Difference]: Start difference. First operand 57495 states and 100251 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-12-02 14:32:17,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:32:17,327 INFO L93 Difference]: Finished difference Result 255778 states and 459976 transitions. [2024-12-02 14:32:17,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:32:17,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 118 [2024-12-02 14:32:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:32:18,408 INFO L225 Difference]: With dead ends: 255778 [2024-12-02 14:32:18,408 INFO L226 Difference]: Without dead ends: 198337 [2024-12-02 14:32:18,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:32:18,714 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 3502 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 1095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3541 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 4550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1095 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:32:18,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3541 Valid, 2273 Invalid, 4550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1095 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 14:32:18,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198337 states. [2024-12-02 14:32:31,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198337 to 175950. [2024-12-02 14:32:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175950 states, 110079 states have (on average 1.560515629684136) internal successors, (171780), 119851 states have internal predecessors, (171780), 60788 states have call successors, (60788), 2096 states have call predecessors, (60788), 5082 states have return successors, (82694), 63116 states have call predecessors, (82694), 60783 states have call successors, (82694) [2024-12-02 14:32:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175950 states to 175950 states and 315262 transitions. [2024-12-02 14:32:32,906 INFO L78 Accepts]: Start accepts. Automaton has 175950 states and 315262 transitions. Word has length 118 [2024-12-02 14:32:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:32:32,907 INFO L471 AbstractCegarLoop]: Abstraction has 175950 states and 315262 transitions. [2024-12-02 14:32:32,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-12-02 14:32:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 175950 states and 315262 transitions. [2024-12-02 14:32:32,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 14:32:32,910 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:32:32,910 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, 1] [2024-12-02 14:32:32,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 14:32:32,910 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:32:32,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:32:32,911 INFO L85 PathProgramCache]: Analyzing trace with hash -298842689, now seen corresponding path program 1 times [2024-12-02 14:32:32,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:32:32,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137231036] [2024-12-02 14:32:32,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:32:32,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:32:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:32:33,081 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 14:32:33,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:32:33,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137231036] [2024-12-02 14:32:33,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137231036] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:32:33,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:32:33,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:32:33,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17267491] [2024-12-02 14:32:33,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:32:33,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:32:33,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:32:33,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:32:33,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:32:33,083 INFO L87 Difference]: Start difference. First operand 175950 states and 315262 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-12-02 14:33:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:33:23,242 INFO L93 Difference]: Finished difference Result 835217 states and 1533126 transitions. [2024-12-02 14:33:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:33:23,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 119 [2024-12-02 14:33:23,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:33:27,656 INFO L225 Difference]: With dead ends: 835217 [2024-12-02 14:33:27,656 INFO L226 Difference]: Without dead ends: 659329 [2024-12-02 14:33:28,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:33:28,923 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 3514 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 3464 mSolverCounterSat, 1097 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3554 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 4561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1097 IncrementalHoareTripleChecker+Valid, 3464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:33:28,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3554 Valid, 2294 Invalid, 4561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1097 Valid, 3464 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 14:33:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659329 states. [2024-12-02 14:34:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659329 to 588557. [2024-12-02 14:34:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588557 states, 362751 states have (on average 1.5621542049505033) internal successors, (566673), 394386 states have internal predecessors, (566673), 210091 states have call successors, (210091), 4080 states have call predecessors, (210091), 15714 states have return successors, (301691), 220435 states have call predecessors, (301691), 210086 states have call successors, (301691) [2024-12-02 14:34:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588557 states to 588557 states and 1078455 transitions. [2024-12-02 14:34:22,913 INFO L78 Accepts]: Start accepts. Automaton has 588557 states and 1078455 transitions. Word has length 119 [2024-12-02 14:34:22,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:22,913 INFO L471 AbstractCegarLoop]: Abstraction has 588557 states and 1078455 transitions. [2024-12-02 14:34:22,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-12-02 14:34:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand 588557 states and 1078455 transitions. [2024-12-02 14:34:22,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 14:34:22,916 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:22,916 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, 1] [2024-12-02 14:34:22,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 14:34:22,916 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:22,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:22,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1629430013, now seen corresponding path program 1 times [2024-12-02 14:34:22,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:22,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568780420] [2024-12-02 14:34:22,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:22,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:23,150 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 14:34:23,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:23,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568780420] [2024-12-02 14:34:23,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568780420] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:23,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:23,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:34:23,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164930338] [2024-12-02 14:34:23,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:23,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:34:23,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:23,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:34:23,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:34:23,152 INFO L87 Difference]: Start difference. First operand 588557 states and 1078455 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 6 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13)