./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a476794b18ee3dc86c949acac0694757499ecd42c9edf7d0e83ac67cafd5af8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:39:10,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:39:10,471 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:39:10,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:39:10,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:39:10,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:39:10,505 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:39:10,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:39:10,506 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:39:10,506 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:39:10,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:39:10,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:39:10,506 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:39:10,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:39:10,507 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:39:10,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:39:10,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:39:10,507 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:39:10,507 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:39:10,507 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:39:10,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:39:10,507 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:39:10,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:39:10,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:39:10,508 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:39:10,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:39:10,508 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:39:10,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:39:10,508 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:39:10,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:39:10,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:39:10,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:39:10,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:39:10,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:39:10,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:39:10,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:39:10,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:39:10,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:39:10,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:39:10,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:39:10,509 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:39:10,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:39:10,509 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:39:10,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:39:10,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:39:10,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:39:10,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:39:10,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:39:10,510 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_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a476794b18ee3dc86c949acac0694757499ecd42c9edf7d0e83ac67cafd5af8 [2024-11-23 18:39:10,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:39:10,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:39:10,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:39:10,791 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:39:10,792 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:39:10,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-23 18:39:13,829 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/data/091a07238/8ed5fc22241f48b0a4fbf5ebf3b3c3ba/FLAGc8192fc09 [2024-11-23 18:39:14,535 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:39:14,536 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-23 18:39:14,584 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/data/091a07238/8ed5fc22241f48b0a4fbf5ebf3b3c3ba/FLAGc8192fc09 [2024-11-23 18:39:14,606 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/data/091a07238/8ed5fc22241f48b0a4fbf5ebf3b3c3ba [2024-11-23 18:39:14,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:39:14,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:39:14,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:39:14,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:39:14,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:39:14,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:39:14" (1/1) ... [2024-11-23 18:39:14,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ba829c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:14, skipping insertion in model container [2024-11-23 18:39:14,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:39:14" (1/1) ... [2024-11-23 18:39:14,748 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:39:15,053 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_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[6487,6500] [2024-11-23 18:39:15,131 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_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[12042,12055] [2024-11-23 18:39:15,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:39:15,994 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:39:16,038 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_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[6487,6500] [2024-11-23 18:39:16,055 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_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[12042,12055] [2024-11-23 18:39:16,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:39:16,568 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:39:16,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16 WrapperNode [2024-11-23 18:39:16,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:39:16,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:39:16,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:39:16,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:39:16,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:16,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,070 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4982 [2024-11-23 18:39:17,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:39:17,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:39:17,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:39:17,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:39:17,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,128 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,329 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 18:39:17,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,561 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:39:17,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:39:17,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:39:17,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:39:17,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (1/1) ... [2024-11-23 18:39:17,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:39:17,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:39:17,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:39:17,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:39:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:39:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:39:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:39:17,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:39:18,046 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:39:18,048 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:39:24,470 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-23 18:39:24,470 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:39:24,509 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:39:24,510 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 18:39:24,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:39:24 BoogieIcfgContainer [2024-11-23 18:39:24,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:39:24,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:39:24,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:39:24,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:39:24,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:39:14" (1/3) ... [2024-11-23 18:39:24,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527dcd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:39:24, skipping insertion in model container [2024-11-23 18:39:24,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:16" (2/3) ... [2024-11-23 18:39:24,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527dcd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:39:24, skipping insertion in model container [2024-11-23 18:39:24,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:39:24" (3/3) ... [2024-11-23 18:39:24,528 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-23 18:39:24,544 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:39:24,549 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c that has 1 procedures, 874 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-23 18:39:24,652 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:39:24,669 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;@10457719, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:39:24,669 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 18:39:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-23 18:39:24,688 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:24,688 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] [2024-11-23 18:39:24,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:24,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:24,695 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2024-11-23 18:39:24,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:24,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852838819] [2024-11-23 18:39:24,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:24,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:24,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852838819] [2024-11-23 18:39:24,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852838819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:24,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:24,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 18:39:24,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363062122] [2024-11-23 18:39:24,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:24,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:39:24,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:25,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:39:25,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:39:25,011 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:25,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:25,127 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-11-23 18:39:25,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:39:25,129 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-23 18:39:25,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:25,151 INFO L225 Difference]: With dead ends: 1724 [2024-11-23 18:39:25,151 INFO L226 Difference]: Without dead ends: 808 [2024-11-23 18:39:25,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:39:25,164 INFO L435 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:25,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-23 18:39:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-23 18:39:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:25,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-11-23 18:39:25,279 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-11-23 18:39:25,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:25,279 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-11-23 18:39:25,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-11-23 18:39:25,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-23 18:39:25,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:25,283 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] [2024-11-23 18:39:25,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 18:39:25,284 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:25,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:25,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-11-23 18:39:25,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:25,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093067291] [2024-11-23 18:39:25,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:25,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:25,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093067291] [2024-11-23 18:39:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093067291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:25,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:25,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:39:25,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630839549] [2024-11-23 18:39:25,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:25,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:39:25,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:25,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:39:25,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:39:25,596 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:25,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:25,751 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-11-23 18:39:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:39:25,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-23 18:39:25,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:25,757 INFO L225 Difference]: With dead ends: 844 [2024-11-23 18:39:25,758 INFO L226 Difference]: Without dead ends: 808 [2024-11-23 18:39:25,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:39:25,763 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:25,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:39:25,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-23 18:39:25,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-23 18:39:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-11-23 18:39:25,816 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-11-23 18:39:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:25,817 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-11-23 18:39:25,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-11-23 18:39:25,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-23 18:39:25,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:25,818 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] [2024-11-23 18:39:25,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:39:25,819 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:25,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:25,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-11-23 18:39:25,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:25,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068215388] [2024-11-23 18:39:25,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:25,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:26,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:26,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068215388] [2024-11-23 18:39:26,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068215388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:26,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:26,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:39:26,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419905717] [2024-11-23 18:39:26,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:26,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:39:26,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:26,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:39:26,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:39:26,064 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:26,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:26,287 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2024-11-23 18:39:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:39:26,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-23 18:39:26,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:26,293 INFO L225 Difference]: With dead ends: 1000 [2024-11-23 18:39:26,293 INFO L226 Difference]: Without dead ends: 968 [2024-11-23 18:39:26,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:39:26,294 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:26,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:39:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-23 18:39:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2024-11-23 18:39:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2024-11-23 18:39:26,323 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2024-11-23 18:39:26,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:26,323 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2024-11-23 18:39:26,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:26,323 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2024-11-23 18:39:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-23 18:39:26,324 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:26,324 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] [2024-11-23 18:39:26,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:39:26,325 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:26,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:26,325 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-11-23 18:39:26,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:26,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078727606] [2024-11-23 18:39:26,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:26,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:26,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:26,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078727606] [2024-11-23 18:39:26,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078727606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:26,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:26,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:39:26,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709225573] [2024-11-23 18:39:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:26,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:39:26,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:26,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:39:26,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:26,473 INFO L87 Difference]: Start difference. First operand 838 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:26,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:26,526 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2024-11-23 18:39:26,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:39:26,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-23 18:39:26,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:26,531 INFO L225 Difference]: With dead ends: 951 [2024-11-23 18:39:26,531 INFO L226 Difference]: Without dead ends: 889 [2024-11-23 18:39:26,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:26,535 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:26,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:26,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-23 18:39:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2024-11-23 18:39:26,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2024-11-23 18:39:26,580 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2024-11-23 18:39:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:26,580 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2024-11-23 18:39:26,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2024-11-23 18:39:26,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-23 18:39:26,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:26,583 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] [2024-11-23 18:39:26,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:39:26,584 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:26,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:26,586 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-11-23 18:39:26,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:26,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371997229] [2024-11-23 18:39:26,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:26,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:26,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:26,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371997229] [2024-11-23 18:39:26,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371997229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:26,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:26,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:39:26,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037967359] [2024-11-23 18:39:26,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:26,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:39:26,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:26,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:39:26,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:39:26,865 INFO L87 Difference]: Start difference. First operand 885 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:26,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:26,987 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2024-11-23 18:39:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:39:26,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-23 18:39:26,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:26,992 INFO L225 Difference]: With dead ends: 996 [2024-11-23 18:39:26,992 INFO L226 Difference]: Without dead ends: 887 [2024-11-23 18:39:26,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:39:26,994 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:26,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:26,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-23 18:39:27,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2024-11-23 18:39:27,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2024-11-23 18:39:27,026 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2024-11-23 18:39:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:27,026 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2024-11-23 18:39:27,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:27,026 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2024-11-23 18:39:27,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 18:39:27,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:27,028 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] [2024-11-23 18:39:27,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:39:27,028 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:27,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:27,029 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-11-23 18:39:27,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:27,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423303327] [2024-11-23 18:39:27,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:27,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:27,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:27,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423303327] [2024-11-23 18:39:27,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423303327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:27,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:27,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:39:27,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879223761] [2024-11-23 18:39:27,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:27,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:39:27,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:27,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:39:27,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:39:27,385 INFO L87 Difference]: Start difference. First operand 885 states and 1626 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:27,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:27,502 INFO L93 Difference]: Finished difference Result 893 states and 1635 transitions. [2024-11-23 18:39:27,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:39:27,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-23 18:39:27,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:27,510 INFO L225 Difference]: With dead ends: 893 [2024-11-23 18:39:27,510 INFO L226 Difference]: Without dead ends: 891 [2024-11-23 18:39:27,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:39:27,511 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:27,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:39:27,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-23 18:39:27,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2024-11-23 18:39:27,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2024-11-23 18:39:27,541 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2024-11-23 18:39:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:27,542 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2024-11-23 18:39:27,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:27,543 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2024-11-23 18:39:27,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 18:39:27,545 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:27,546 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] [2024-11-23 18:39:27,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:39:27,546 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:27,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:27,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-11-23 18:39:27,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:27,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855343834] [2024-11-23 18:39:27,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:27,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:27,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:27,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855343834] [2024-11-23 18:39:27,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855343834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:27,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:27,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:39:27,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953942934] [2024-11-23 18:39:27,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:27,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:39:27,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:27,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:39:27,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:27,632 INFO L87 Difference]: Start difference. First operand 891 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:27,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:27,674 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2024-11-23 18:39:27,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:39:27,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-23 18:39:27,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:27,679 INFO L225 Difference]: With dead ends: 1105 [2024-11-23 18:39:27,679 INFO L226 Difference]: Without dead ends: 990 [2024-11-23 18:39:27,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:27,681 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:27,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:27,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-23 18:39:27,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2024-11-23 18:39:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2024-11-23 18:39:27,711 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2024-11-23 18:39:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:27,711 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2024-11-23 18:39:27,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:27,712 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2024-11-23 18:39:27,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 18:39:27,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:27,712 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] [2024-11-23 18:39:27,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:39:27,713 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:27,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:27,713 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-11-23 18:39:27,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:27,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036052752] [2024-11-23 18:39:27,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:27,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:27,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:27,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036052752] [2024-11-23 18:39:27,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036052752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:27,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:27,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:39:27,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826052255] [2024-11-23 18:39:27,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:27,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:39:27,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:27,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:39:27,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:27,777 INFO L87 Difference]: Start difference. First operand 988 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:27,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:27,816 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2024-11-23 18:39:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:39:27,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-23 18:39:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:27,822 INFO L225 Difference]: With dead ends: 1380 [2024-11-23 18:39:27,822 INFO L226 Difference]: Without dead ends: 1168 [2024-11-23 18:39:27,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:27,824 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:27,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:27,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-23 18:39:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2024-11-23 18:39:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2024-11-23 18:39:27,859 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2024-11-23 18:39:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:27,860 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2024-11-23 18:39:27,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:27,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2024-11-23 18:39:27,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-23 18:39:27,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:27,861 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] [2024-11-23 18:39:27,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:39:27,861 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:27,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:27,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-11-23 18:39:27,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:27,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995044188] [2024-11-23 18:39:27,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:27,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:27,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:27,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995044188] [2024-11-23 18:39:27,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995044188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:27,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:27,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:39:27,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950075506] [2024-11-23 18:39:27,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:27,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:39:27,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:27,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:39:27,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:27,918 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:28,084 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2024-11-23 18:39:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:39:28,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-23 18:39:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:28,091 INFO L225 Difference]: With dead ends: 1589 [2024-11-23 18:39:28,092 INFO L226 Difference]: Without dead ends: 1354 [2024-11-23 18:39:28,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:28,094 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:28,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:28,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2024-11-23 18:39:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2024-11-23 18:39:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2024-11-23 18:39:28,141 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2024-11-23 18:39:28,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:28,141 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2024-11-23 18:39:28,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2024-11-23 18:39:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-23 18:39:28,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:28,142 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] [2024-11-23 18:39:28,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:39:28,142 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:28,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:28,143 INFO L85 PathProgramCache]: Analyzing trace with hash -452716683, now seen corresponding path program 1 times [2024-11-23 18:39:28,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:28,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933132097] [2024-11-23 18:39:28,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:28,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:28,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:28,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933132097] [2024-11-23 18:39:28,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933132097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:28,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:28,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:39:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001382383] [2024-11-23 18:39:28,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:28,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:39:28,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:28,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:39:28,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:39:28,344 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:36,760 INFO L93 Difference]: Finished difference Result 3607 states and 6573 transitions. [2024-11-23 18:39:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:39:36,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-23 18:39:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:36,772 INFO L225 Difference]: With dead ends: 3607 [2024-11-23 18:39:36,772 INFO L226 Difference]: Without dead ends: 2854 [2024-11-23 18:39:36,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:39:36,774 INFO L435 NwaCegarLoop]: 747 mSDtfsCounter, 2361 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2361 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:36,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2361 Valid, 765 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-23 18:39:36,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2024-11-23 18:39:36,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2854. [2024-11-23 18:39:36,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2854 states, 2852 states have (on average 1.535063113604488) internal successors, (4378), 2853 states have internal predecessors, (4378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2854 states to 2854 states and 4378 transitions. [2024-11-23 18:39:36,851 INFO L78 Accepts]: Start accepts. Automaton has 2854 states and 4378 transitions. Word has length 48 [2024-11-23 18:39:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:36,851 INFO L471 AbstractCegarLoop]: Abstraction has 2854 states and 4378 transitions. [2024-11-23 18:39:36,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2854 states and 4378 transitions. [2024-11-23 18:39:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-23 18:39:36,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:36,853 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:39:36,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 18:39:36,853 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:36,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-11-23 18:39:36,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:36,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266540874] [2024-11-23 18:39:36,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:36,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 18:39:37,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:37,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266540874] [2024-11-23 18:39:37,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266540874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:37,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:37,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:39:37,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416402222] [2024-11-23 18:39:37,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:37,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:39:37,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:37,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:39:37,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:39:37,029 INFO L87 Difference]: Start difference. First operand 2854 states and 4378 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:37,154 INFO L93 Difference]: Finished difference Result 4710 states and 6958 transitions. [2024-11-23 18:39:37,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:39:37,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-23 18:39:37,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:37,168 INFO L225 Difference]: With dead ends: 4710 [2024-11-23 18:39:37,168 INFO L226 Difference]: Without dead ends: 4136 [2024-11-23 18:39:37,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:39:37,171 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 3061 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3061 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:37,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3061 Valid, 3147 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2024-11-23 18:39:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3426. [2024-11-23 18:39:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 3424 states have (on average 1.5087616822429906) internal successors, (5166), 3425 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 5166 transitions. [2024-11-23 18:39:37,271 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 5166 transitions. Word has length 54 [2024-11-23 18:39:37,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:37,271 INFO L471 AbstractCegarLoop]: Abstraction has 3426 states and 5166 transitions. [2024-11-23 18:39:37,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 5166 transitions. [2024-11-23 18:39:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-23 18:39:37,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:37,272 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:39:37,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 18:39:37,272 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:37,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-11-23 18:39:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:37,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952958509] [2024-11-23 18:39:37,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:37,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:39:37,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:37,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952958509] [2024-11-23 18:39:37,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952958509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:37,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:37,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:39:37,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57147279] [2024-11-23 18:39:37,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:37,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:39:37,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:37,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:39:37,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:39:37,475 INFO L87 Difference]: Start difference. First operand 3426 states and 5166 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:37,622 INFO L93 Difference]: Finished difference Result 5282 states and 7746 transitions. [2024-11-23 18:39:37,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:39:37,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-23 18:39:37,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:37,637 INFO L225 Difference]: With dead ends: 5282 [2024-11-23 18:39:37,637 INFO L226 Difference]: Without dead ends: 4708 [2024-11-23 18:39:37,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:39:37,640 INFO L435 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:37,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:39:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2024-11-23 18:39:37,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 4286. [2024-11-23 18:39:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4284 states have (on average 1.4794584500466854) internal successors, (6338), 4285 states have internal predecessors, (6338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 6338 transitions. [2024-11-23 18:39:37,822 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 6338 transitions. Word has length 54 [2024-11-23 18:39:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:37,823 INFO L471 AbstractCegarLoop]: Abstraction has 4286 states and 6338 transitions. [2024-11-23 18:39:37,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:37,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 6338 transitions. [2024-11-23 18:39:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 18:39:37,824 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:37,824 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:39:37,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 18:39:37,825 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:37,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-11-23 18:39:37,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:37,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710995855] [2024-11-23 18:39:37,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:37,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:37,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:37,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710995855] [2024-11-23 18:39:37,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710995855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:37,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:37,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:39:37,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571995402] [2024-11-23 18:39:37,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:37,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:39:37,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:37,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:39:37,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:37,958 INFO L87 Difference]: Start difference. First operand 4286 states and 6338 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:38,015 INFO L93 Difference]: Finished difference Result 5762 states and 8401 transitions. [2024-11-23 18:39:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:39:38,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-23 18:39:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:38,036 INFO L225 Difference]: With dead ends: 5762 [2024-11-23 18:39:38,036 INFO L226 Difference]: Without dead ends: 3756 [2024-11-23 18:39:38,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:38,043 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:38,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:38,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3756 states. [2024-11-23 18:39:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3756 to 3754. [2024-11-23 18:39:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 3752 states have (on average 1.4952025586353945) internal successors, (5610), 3753 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:38,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5610 transitions. [2024-11-23 18:39:38,155 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5610 transitions. Word has length 56 [2024-11-23 18:39:38,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:38,155 INFO L471 AbstractCegarLoop]: Abstraction has 3754 states and 5610 transitions. [2024-11-23 18:39:38,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:38,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5610 transitions. [2024-11-23 18:39:38,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 18:39:38,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:38,156 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:39:38,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 18:39:38,157 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:38,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:38,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-11-23 18:39:38,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:38,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346942801] [2024-11-23 18:39:38,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:38,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:39:38,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:38,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346942801] [2024-11-23 18:39:38,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346942801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:38,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:38,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:39:38,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300741071] [2024-11-23 18:39:38,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:38,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:39:38,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:38,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:39:38,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:39:38,287 INFO L87 Difference]: Start difference. First operand 3754 states and 5610 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:38,518 INFO L93 Difference]: Finished difference Result 5010 states and 7366 transitions. [2024-11-23 18:39:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:39:38,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-23 18:39:38,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:38,541 INFO L225 Difference]: With dead ends: 5010 [2024-11-23 18:39:38,544 INFO L226 Difference]: Without dead ends: 4592 [2024-11-23 18:39:38,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:39:38,547 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:38,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2024-11-23 18:39:38,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 4170. [2024-11-23 18:39:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4170 states, 4168 states have (on average 1.484165067178503) internal successors, (6186), 4169 states have internal predecessors, (6186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 6186 transitions. [2024-11-23 18:39:38,755 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 6186 transitions. Word has length 56 [2024-11-23 18:39:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:38,755 INFO L471 AbstractCegarLoop]: Abstraction has 4170 states and 6186 transitions. [2024-11-23 18:39:38,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 6186 transitions. [2024-11-23 18:39:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-23 18:39:38,757 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:38,757 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:39:38,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 18:39:38,758 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:38,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-11-23 18:39:38,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:38,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631345745] [2024-11-23 18:39:38,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:38,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:38,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:38,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631345745] [2024-11-23 18:39:38,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631345745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:38,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:38,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:39:38,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939565745] [2024-11-23 18:39:38,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:38,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:39:38,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:38,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:39:38,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:38,905 INFO L87 Difference]: Start difference. First operand 4170 states and 6186 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:38,953 INFO L93 Difference]: Finished difference Result 5110 states and 7484 transitions. [2024-11-23 18:39:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:39:38,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-23 18:39:38,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:38,965 INFO L225 Difference]: With dead ends: 5110 [2024-11-23 18:39:38,965 INFO L226 Difference]: Without dead ends: 3236 [2024-11-23 18:39:38,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:38,969 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:38,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:38,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2024-11-23 18:39:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3234. [2024-11-23 18:39:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3232 states have (on average 1.5074257425742574) internal successors, (4872), 3233 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4872 transitions. [2024-11-23 18:39:39,074 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4872 transitions. Word has length 57 [2024-11-23 18:39:39,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:39,075 INFO L471 AbstractCegarLoop]: Abstraction has 3234 states and 4872 transitions. [2024-11-23 18:39:39,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4872 transitions. [2024-11-23 18:39:39,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 18:39:39,077 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:39,078 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:39:39,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 18:39:39,078 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:39,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:39,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-11-23 18:39:39,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:39,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033614706] [2024-11-23 18:39:39,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:39,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:39,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033614706] [2024-11-23 18:39:39,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033614706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:39,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:39,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:39:39,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488486677] [2024-11-23 18:39:39,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:39,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:39:39,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:39,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:39:39,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:39,181 INFO L87 Difference]: Start difference. First operand 3234 states and 4872 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:39,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:39,217 INFO L93 Difference]: Finished difference Result 3706 states and 5513 transitions. [2024-11-23 18:39:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:39:39,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-23 18:39:39,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:39,223 INFO L225 Difference]: With dead ends: 3706 [2024-11-23 18:39:39,224 INFO L226 Difference]: Without dead ends: 2768 [2024-11-23 18:39:39,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:39,226 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:39,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2024-11-23 18:39:39,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2766. [2024-11-23 18:39:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2764 states have (on average 1.52821997105644) internal successors, (4224), 2765 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4224 transitions. [2024-11-23 18:39:39,277 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4224 transitions. Word has length 59 [2024-11-23 18:39:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:39,277 INFO L471 AbstractCegarLoop]: Abstraction has 2766 states and 4224 transitions. [2024-11-23 18:39:39,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:39,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4224 transitions. [2024-11-23 18:39:39,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-23 18:39:39,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:39,278 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:39:39,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 18:39:39,278 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:39,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:39,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-11-23 18:39:39,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:39,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291837348] [2024-11-23 18:39:39,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:39,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:41,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:41,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291837348] [2024-11-23 18:39:41,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291837348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:39:41,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440482246] [2024-11-23 18:39:41,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:41,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:39:41,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:39:41,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:39:41,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:39:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:41,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 18:39:41,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:39:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:39:41,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:39:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:39:41,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440482246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:39:41,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:39:41,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-23 18:39:41,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055305550] [2024-11-23 18:39:41,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:39:41,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 18:39:41,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:41,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 18:39:41,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-23 18:39:41,995 INFO L87 Difference]: Start difference. First operand 2766 states and 4224 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:44,588 INFO L93 Difference]: Finished difference Result 5167 states and 7398 transitions. [2024-11-23 18:39:44,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-23 18:39:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-23 18:39:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:44,600 INFO L225 Difference]: With dead ends: 5167 [2024-11-23 18:39:44,601 INFO L226 Difference]: Without dead ends: 4697 [2024-11-23 18:39:44,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-23 18:39:44,605 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 14312 mSDsluCounter, 7709 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14312 SdHoareTripleChecker+Valid, 9208 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:44,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14312 Valid, 9208 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:39:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2024-11-23 18:39:44,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4663. [2024-11-23 18:39:44,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4663 states, 4661 states have (on average 1.4093542158335122) internal successors, (6569), 4662 states have internal predecessors, (6569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 6569 transitions. [2024-11-23 18:39:44,732 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 6569 transitions. Word has length 61 [2024-11-23 18:39:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:44,732 INFO L471 AbstractCegarLoop]: Abstraction has 4663 states and 6569 transitions. [2024-11-23 18:39:44,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:44,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 6569 transitions. [2024-11-23 18:39:44,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 18:39:44,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:44,734 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:39:44,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:39:44,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 18:39:44,935 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:44,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:44,937 INFO L85 PathProgramCache]: Analyzing trace with hash 459765187, now seen corresponding path program 1 times [2024-11-23 18:39:44,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:44,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610125536] [2024-11-23 18:39:44,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:44,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:47,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610125536] [2024-11-23 18:39:47,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610125536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:39:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919329327] [2024-11-23 18:39:47,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:47,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:39:47,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:39:47,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:39:47,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:39:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:47,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 18:39:47,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:39:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:47,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:39:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:48,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919329327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:39:48,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:39:48,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-23 18:39:48,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989624060] [2024-11-23 18:39:48,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:39:48,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-23 18:39:48,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:48,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-23 18:39:48,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-23 18:39:48,782 INFO L87 Difference]: Start difference. First operand 4663 states and 6569 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:49,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:49,439 INFO L93 Difference]: Finished difference Result 8770 states and 11759 transitions. [2024-11-23 18:39:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 18:39:49,439 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-23 18:39:49,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:49,454 INFO L225 Difference]: With dead ends: 8770 [2024-11-23 18:39:49,454 INFO L226 Difference]: Without dead ends: 6811 [2024-11-23 18:39:49,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 18:39:49,459 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 15029 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15029 SdHoareTripleChecker+Valid, 4714 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:49,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15029 Valid, 4714 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:39:49,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6811 states. [2024-11-23 18:39:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6811 to 6745. [2024-11-23 18:39:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6745 states, 6743 states have (on average 1.349251075189085) internal successors, (9098), 6744 states have internal predecessors, (9098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 9098 transitions. [2024-11-23 18:39:49,650 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 9098 transitions. Word has length 62 [2024-11-23 18:39:49,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:49,650 INFO L471 AbstractCegarLoop]: Abstraction has 6745 states and 9098 transitions. [2024-11-23 18:39:49,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 9098 transitions. [2024-11-23 18:39:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 18:39:49,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:49,652 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:39:49,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:39:49,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 18:39:49,856 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:49,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:49,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1147902773, now seen corresponding path program 1 times [2024-11-23 18:39:49,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:49,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65091030] [2024-11-23 18:39:49,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:49,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:50,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:50,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65091030] [2024-11-23 18:39:50,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65091030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:39:50,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822845316] [2024-11-23 18:39:50,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:50,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:39:50,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:39:50,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:39:50,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:39:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:50,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 18:39:50,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:39:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:51,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:39:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:52,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822845316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:39:52,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:39:52,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-23 18:39:52,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967120993] [2024-11-23 18:39:52,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:39:52,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 18:39:52,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:52,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 18:39:52,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-23 18:39:52,760 INFO L87 Difference]: Start difference. First operand 6745 states and 9098 transitions. Second operand has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:56,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:56,556 INFO L93 Difference]: Finished difference Result 14766 states and 19158 transitions. [2024-11-23 18:39:56,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-23 18:39:56,557 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-23 18:39:56,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:56,580 INFO L225 Difference]: With dead ends: 14766 [2024-11-23 18:39:56,580 INFO L226 Difference]: Without dead ends: 10806 [2024-11-23 18:39:56,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-11-23 18:39:56,587 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 15308 mSDsluCounter, 13970 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15308 SdHoareTripleChecker+Valid, 15478 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:56,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15308 Valid, 15478 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:39:56,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10806 states. [2024-11-23 18:39:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10806 to 7404. [2024-11-23 18:39:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7404 states, 7402 states have (on average 1.3393677384490679) internal successors, (9914), 7403 states have internal predecessors, (9914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:56,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7404 states to 7404 states and 9914 transitions. [2024-11-23 18:39:56,928 INFO L78 Accepts]: Start accepts. Automaton has 7404 states and 9914 transitions. Word has length 62 [2024-11-23 18:39:56,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:56,929 INFO L471 AbstractCegarLoop]: Abstraction has 7404 states and 9914 transitions. [2024-11-23 18:39:56,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:39:56,929 INFO L276 IsEmpty]: Start isEmpty. Operand 7404 states and 9914 transitions. [2024-11-23 18:39:56,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 18:39:56,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:56,931 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:39:56,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:39:57,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:39:57,135 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:57,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:57,135 INFO L85 PathProgramCache]: Analyzing trace with hash 807603108, now seen corresponding path program 1 times [2024-11-23 18:39:57,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:57,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316256072] [2024-11-23 18:39:57,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:57,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:57,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:57,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316256072] [2024-11-23 18:39:57,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316256072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:39:57,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264098878] [2024-11-23 18:39:57,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:57,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:39:57,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:39:57,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:39:57,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:39:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:57,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 18:39:57,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:39:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:39:59,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:00,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264098878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:00,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:00,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-23 18:40:00,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491587857] [2024-11-23 18:40:00,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:00,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-23 18:40:00,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:00,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-23 18:40:00,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-23 18:40:00,761 INFO L87 Difference]: Start difference. First operand 7404 states and 9914 transitions. Second operand has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:02,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:40:02,902 INFO L93 Difference]: Finished difference Result 14054 states and 18217 transitions. [2024-11-23 18:40:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 18:40:02,902 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-23 18:40:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:40:02,929 INFO L225 Difference]: With dead ends: 14054 [2024-11-23 18:40:02,930 INFO L226 Difference]: Without dead ends: 9740 [2024-11-23 18:40:02,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-11-23 18:40:02,939 INFO L435 NwaCegarLoop]: 1514 mSDtfsCounter, 16836 mSDsluCounter, 8017 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16836 SdHoareTripleChecker+Valid, 9531 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:40:02,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16836 Valid, 9531 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 18:40:02,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9740 states. [2024-11-23 18:40:03,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9740 to 9316. [2024-11-23 18:40:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9316 states, 9314 states have (on average 1.309748765299549) internal successors, (12199), 9315 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:03,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9316 states to 9316 states and 12199 transitions. [2024-11-23 18:40:03,449 INFO L78 Accepts]: Start accepts. Automaton has 9316 states and 12199 transitions. Word has length 63 [2024-11-23 18:40:03,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:40:03,450 INFO L471 AbstractCegarLoop]: Abstraction has 9316 states and 12199 transitions. [2024-11-23 18:40:03,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 9316 states and 12199 transitions. [2024-11-23 18:40:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 18:40:03,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:40:03,452 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:03,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 18:40:03,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:03,656 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:40:03,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:03,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1786741782, now seen corresponding path program 1 times [2024-11-23 18:40:03,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:03,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751866077] [2024-11-23 18:40:03,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:03,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:05,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:05,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751866077] [2024-11-23 18:40:05,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751866077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:05,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627328566] [2024-11-23 18:40:05,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:05,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:05,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:05,807 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:05,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:40:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:06,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 18:40:06,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:09,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:12,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627328566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:12,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:12,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-11-23 18:40:12,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623739726] [2024-11-23 18:40:12,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:12,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-23 18:40:12,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:12,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-23 18:40:12,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-11-23 18:40:12,044 INFO L87 Difference]: Start difference. First operand 9316 states and 12199 transitions. Second operand has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:40:39,573 INFO L93 Difference]: Finished difference Result 16042 states and 20456 transitions. [2024-11-23 18:40:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-23 18:40:39,612 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-23 18:40:39,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:40:39,625 INFO L225 Difference]: With dead ends: 16042 [2024-11-23 18:40:39,625 INFO L226 Difference]: Without dead ends: 13203 [2024-11-23 18:40:39,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5729 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=4031, Invalid=15991, Unknown=0, NotChecked=0, Total=20022 [2024-11-23 18:40:39,633 INFO L435 NwaCegarLoop]: 1536 mSDtfsCounter, 18150 mSDsluCounter, 19201 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18150 SdHoareTripleChecker+Valid, 20737 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:40:39,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18150 Valid, 20737 Invalid, 2263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 18:40:39,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13203 states. [2024-11-23 18:40:40,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13203 to 11387. [2024-11-23 18:40:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11387 states, 11385 states have (on average 1.2968818620992535) internal successors, (14765), 11386 states have internal predecessors, (14765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11387 states to 11387 states and 14765 transitions. [2024-11-23 18:40:40,597 INFO L78 Accepts]: Start accepts. Automaton has 11387 states and 14765 transitions. Word has length 63 [2024-11-23 18:40:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:40:40,601 INFO L471 AbstractCegarLoop]: Abstraction has 11387 states and 14765 transitions. [2024-11-23 18:40:40,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 11387 states and 14765 transitions. [2024-11-23 18:40:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 18:40:40,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:40:40,606 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:40,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 18:40:40,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 18:40:40,807 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:40:40,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:40,808 INFO L85 PathProgramCache]: Analyzing trace with hash 532152701, now seen corresponding path program 1 times [2024-11-23 18:40:40,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:40,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426221832] [2024-11-23 18:40:40,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:40,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:42,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:42,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426221832] [2024-11-23 18:40:42,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426221832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:42,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591662217] [2024-11-23 18:40:42,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:42,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:42,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:42,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:42,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 18:40:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:42,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 18:40:42,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:43,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:44,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591662217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:44,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:44,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-11-23 18:40:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994532509] [2024-11-23 18:40:44,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:44,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-23 18:40:44,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:44,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-23 18:40:44,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 18:40:44,483 INFO L87 Difference]: Start difference. First operand 11387 states and 14765 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:47,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:40:47,984 INFO L93 Difference]: Finished difference Result 14885 states and 19042 transitions. [2024-11-23 18:40:47,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 18:40:47,984 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 18:40:47,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:40:47,992 INFO L225 Difference]: With dead ends: 14885 [2024-11-23 18:40:47,993 INFO L226 Difference]: Without dead ends: 11074 [2024-11-23 18:40:47,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-11-23 18:40:47,998 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 11369 mSDsluCounter, 14022 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11369 SdHoareTripleChecker+Valid, 15539 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:40:47,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11369 Valid, 15539 Invalid, 1008 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 18:40:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11074 states. [2024-11-23 18:40:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11074 to 9456. [2024-11-23 18:40:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9456 states, 9454 states have (on average 1.3062195895917073) internal successors, (12349), 9455 states have internal predecessors, (12349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:48,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9456 states to 9456 states and 12349 transitions. [2024-11-23 18:40:48,636 INFO L78 Accepts]: Start accepts. Automaton has 9456 states and 12349 transitions. Word has length 64 [2024-11-23 18:40:48,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:40:48,636 INFO L471 AbstractCegarLoop]: Abstraction has 9456 states and 12349 transitions. [2024-11-23 18:40:48,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:48,637 INFO L276 IsEmpty]: Start isEmpty. Operand 9456 states and 12349 transitions. [2024-11-23 18:40:48,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 18:40:48,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:40:48,638 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:48,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 18:40:48,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-23 18:40:48,843 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:40:48,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:48,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-11-23 18:40:48,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:48,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331920528] [2024-11-23 18:40:48,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:48,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:51,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:51,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331920528] [2024-11-23 18:40:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331920528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059627646] [2024-11-23 18:40:51,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:51,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:51,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:51,231 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:51,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 18:40:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:51,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 18:40:51,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:52,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:53,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059627646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:53,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:53,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-11-23 18:40:53,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542090223] [2024-11-23 18:40:53,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:53,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-23 18:40:53,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:53,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-23 18:40:53,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-23 18:40:53,761 INFO L87 Difference]: Start difference. First operand 9456 states and 12349 transitions. Second operand has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:41:06,675 INFO L93 Difference]: Finished difference Result 23366 states and 29399 transitions. [2024-11-23 18:41:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-23 18:41:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-23 18:41:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:41:06,691 INFO L225 Difference]: With dead ends: 23366 [2024-11-23 18:41:06,691 INFO L226 Difference]: Without dead ends: 18935 [2024-11-23 18:41:06,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=2435, Invalid=9121, Unknown=0, NotChecked=0, Total=11556 [2024-11-23 18:41:06,696 INFO L435 NwaCegarLoop]: 1583 mSDtfsCounter, 15392 mSDsluCounter, 27477 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15392 SdHoareTripleChecker+Valid, 29060 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:41:06,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15392 Valid, 29060 Invalid, 2758 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-23 18:41:06,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18935 states. [2024-11-23 18:41:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18935 to 6613. [2024-11-23 18:41:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6613 states, 6611 states have (on average 1.3459385872031462) internal successors, (8898), 6612 states have internal predecessors, (8898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6613 states to 6613 states and 8898 transitions. [2024-11-23 18:41:07,083 INFO L78 Accepts]: Start accepts. Automaton has 6613 states and 8898 transitions. Word has length 65 [2024-11-23 18:41:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:41:07,083 INFO L471 AbstractCegarLoop]: Abstraction has 6613 states and 8898 transitions. [2024-11-23 18:41:07,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand 6613 states and 8898 transitions. [2024-11-23 18:41:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 18:41:07,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:41:07,085 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:41:07,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 18:41:07,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 18:41:07,286 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:41:07,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:41:07,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1065912349, now seen corresponding path program 1 times [2024-11-23 18:41:07,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:41:07,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121726645] [2024-11-23 18:41:07,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:07,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:41:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:41:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:08,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:41:08,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121726645] [2024-11-23 18:41:08,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121726645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:41:08,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104417954] [2024-11-23 18:41:08,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:08,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:41:08,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:41:08,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:41:08,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 18:41:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:41:08,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 18:41:08,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:41:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:09,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:41:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:10,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104417954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:41:10,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:41:10,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-23 18:41:10,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823895725] [2024-11-23 18:41:10,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:41:10,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-23 18:41:10,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:41:10,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-23 18:41:10,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2024-11-23 18:41:10,962 INFO L87 Difference]: Start difference. First operand 6613 states and 8898 transitions. Second operand has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:41:12,642 INFO L93 Difference]: Finished difference Result 16183 states and 20826 transitions. [2024-11-23 18:41:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 18:41:12,643 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-23 18:41:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:41:12,657 INFO L225 Difference]: With dead ends: 16183 [2024-11-23 18:41:12,657 INFO L226 Difference]: Without dead ends: 12184 [2024-11-23 18:41:12,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2024-11-23 18:41:12,664 INFO L435 NwaCegarLoop]: 1516 mSDtfsCounter, 13461 mSDsluCounter, 9235 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13461 SdHoareTripleChecker+Valid, 10751 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:41:12,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13461 Valid, 10751 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 18:41:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12184 states. [2024-11-23 18:41:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12184 to 11364. [2024-11-23 18:41:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11364 states, 11362 states have (on average 1.2871853546910754) internal successors, (14625), 11363 states have internal predecessors, (14625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11364 states to 11364 states and 14625 transitions. [2024-11-23 18:41:13,244 INFO L78 Accepts]: Start accepts. Automaton has 11364 states and 14625 transitions. Word has length 103 [2024-11-23 18:41:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:41:13,244 INFO L471 AbstractCegarLoop]: Abstraction has 11364 states and 14625 transitions. [2024-11-23 18:41:13,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 11364 states and 14625 transitions. [2024-11-23 18:41:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 18:41:13,246 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:41:13,246 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:41:13,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 18:41:13,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-23 18:41:13,447 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:41:13,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:41:13,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1754049935, now seen corresponding path program 1 times [2024-11-23 18:41:13,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:41:13,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686212353] [2024-11-23 18:41:13,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:13,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:41:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:41:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:14,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:41:14,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686212353] [2024-11-23 18:41:14,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686212353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:41:14,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156903836] [2024-11-23 18:41:14,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:14,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:41:14,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:41:14,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:41:14,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 18:41:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:41:14,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 18:41:14,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:41:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:15,417 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:41:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156903836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:41:17,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:41:17,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-23 18:41:17,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563830172] [2024-11-23 18:41:17,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:41:17,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-23 18:41:17,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:41:17,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-23 18:41:17,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-23 18:41:17,130 INFO L87 Difference]: Start difference. First operand 11364 states and 14625 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:18,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:41:18,612 INFO L93 Difference]: Finished difference Result 16074 states and 20389 transitions. [2024-11-23 18:41:18,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 18:41:18,612 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-23 18:41:18,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:41:18,625 INFO L225 Difference]: With dead ends: 16074 [2024-11-23 18:41:18,625 INFO L226 Difference]: Without dead ends: 10362 [2024-11-23 18:41:18,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 18:41:18,632 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 17844 mSDsluCounter, 10606 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17844 SdHoareTripleChecker+Valid, 12121 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:41:18,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17844 Valid, 12121 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:41:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2024-11-23 18:41:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 10270. [2024-11-23 18:41:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10270 states, 10268 states have (on average 1.286618620958317) internal successors, (13211), 10269 states have internal predecessors, (13211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10270 states to 10270 states and 13211 transitions. [2024-11-23 18:41:19,247 INFO L78 Accepts]: Start accepts. Automaton has 10270 states and 13211 transitions. Word has length 103 [2024-11-23 18:41:19,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:41:19,247 INFO L471 AbstractCegarLoop]: Abstraction has 10270 states and 13211 transitions. [2024-11-23 18:41:19,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:19,248 INFO L276 IsEmpty]: Start isEmpty. Operand 10270 states and 13211 transitions. [2024-11-23 18:41:19,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 18:41:19,250 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:41:19,250 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:41:19,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 18:41:19,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-23 18:41:19,451 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:41:19,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:41:19,451 INFO L85 PathProgramCache]: Analyzing trace with hash 856710688, now seen corresponding path program 1 times [2024-11-23 18:41:19,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:41:19,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225995174] [2024-11-23 18:41:19,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:19,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:41:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:41:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 18:41:20,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:41:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225995174] [2024-11-23 18:41:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225995174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:41:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387017447] [2024-11-23 18:41:20,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:20,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:41:20,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:41:20,880 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:41:20,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 18:41:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:41:21,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-23 18:41:21,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:41:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:23,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:41:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:28,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387017447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:41:28,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:41:28,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-11-23 18:41:28,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829645697] [2024-11-23 18:41:28,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:41:28,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-23 18:41:28,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:41:28,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-23 18:41:28,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2024-11-23 18:41:28,071 INFO L87 Difference]: Start difference. First operand 10270 states and 13211 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:42,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:41:42,601 INFO L93 Difference]: Finished difference Result 15968 states and 20080 transitions. [2024-11-23 18:41:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-23 18:41:42,602 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-23 18:41:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:41:42,611 INFO L225 Difference]: With dead ends: 15968 [2024-11-23 18:41:42,611 INFO L226 Difference]: Without dead ends: 10438 [2024-11-23 18:41:42,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3017 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=1975, Invalid=10907, Unknown=0, NotChecked=0, Total=12882 [2024-11-23 18:41:42,616 INFO L435 NwaCegarLoop]: 1509 mSDtfsCounter, 26355 mSDsluCounter, 27556 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26355 SdHoareTripleChecker+Valid, 29065 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:41:42,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26355 Valid, 29065 Invalid, 1956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [111 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 18:41:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10438 states. [2024-11-23 18:41:43,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10438 to 9954. [2024-11-23 18:41:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9954 states, 9952 states have (on average 1.2900924437299035) internal successors, (12839), 9953 states have internal predecessors, (12839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9954 states to 9954 states and 12839 transitions. [2024-11-23 18:41:43,241 INFO L78 Accepts]: Start accepts. Automaton has 9954 states and 12839 transitions. Word has length 104 [2024-11-23 18:41:43,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:41:43,241 INFO L471 AbstractCegarLoop]: Abstraction has 9954 states and 12839 transitions. [2024-11-23 18:41:43,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:43,241 INFO L276 IsEmpty]: Start isEmpty. Operand 9954 states and 12839 transitions. [2024-11-23 18:41:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 18:41:43,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:41:43,243 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:41:43,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 18:41:43,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-23 18:41:43,444 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:41:43,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:41:43,444 INFO L85 PathProgramCache]: Analyzing trace with hash 15634770, now seen corresponding path program 1 times [2024-11-23 18:41:43,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:41:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050500027] [2024-11-23 18:41:43,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:41:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:41:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:44,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:41:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050500027] [2024-11-23 18:41:44,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050500027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:41:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214959732] [2024-11-23 18:41:44,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:44,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:41:44,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:41:44,372 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:41:44,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 18:41:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:41:44,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 18:41:44,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:41:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:45,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:41:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:49,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214959732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:41:49,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:41:49,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2024-11-23 18:41:49,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786543400] [2024-11-23 18:41:49,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:41:49,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-23 18:41:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:41:49,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-23 18:41:49,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 18:41:49,384 INFO L87 Difference]: Start difference. First operand 9954 states and 12839 transitions. Second operand has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:41:56,574 INFO L93 Difference]: Finished difference Result 21336 states and 26713 transitions. [2024-11-23 18:41:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-23 18:41:56,574 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-23 18:41:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:41:56,587 INFO L225 Difference]: With dead ends: 21336 [2024-11-23 18:41:56,587 INFO L226 Difference]: Without dead ends: 14260 [2024-11-23 18:41:56,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2952 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1986, Invalid=8726, Unknown=0, NotChecked=0, Total=10712 [2024-11-23 18:41:56,593 INFO L435 NwaCegarLoop]: 1623 mSDtfsCounter, 24275 mSDsluCounter, 12056 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24275 SdHoareTripleChecker+Valid, 13679 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 18:41:56,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24275 Valid, 13679 Invalid, 2241 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 18:41:56,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14260 states. [2024-11-23 18:41:57,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14260 to 6134. [2024-11-23 18:41:57,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6134 states, 6132 states have (on average 1.3377364644487932) internal successors, (8203), 6133 states have internal predecessors, (8203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6134 states to 6134 states and 8203 transitions. [2024-11-23 18:41:57,044 INFO L78 Accepts]: Start accepts. Automaton has 6134 states and 8203 transitions. Word has length 104 [2024-11-23 18:41:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:41:57,044 INFO L471 AbstractCegarLoop]: Abstraction has 6134 states and 8203 transitions. [2024-11-23 18:41:57,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6134 states and 8203 transitions. [2024-11-23 18:41:57,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 18:41:57,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:41:57,047 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:41:57,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 18:41:57,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-23 18:41:57,247 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:41:57,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:41:57,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2024-11-23 18:41:57,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:41:57,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565785884] [2024-11-23 18:41:57,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:57,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:41:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:41:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:58,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:41:58,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565785884] [2024-11-23 18:41:58,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565785884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:41:58,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324474227] [2024-11-23 18:41:58,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:58,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:41:58,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:41:58,472 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:41:58,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 18:41:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:41:58,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-23 18:41:58,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:42:00,612 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:42:00,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:42:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:42:04,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324474227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:42:04,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:42:04,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 17] total 53 [2024-11-23 18:42:04,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528715411] [2024-11-23 18:42:04,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:42:04,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-23 18:42:04,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:42:04,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-23 18:42:04,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2526, Unknown=0, NotChecked=0, Total=2756 [2024-11-23 18:42:04,739 INFO L87 Difference]: Start difference. First operand 6134 states and 8203 transitions. Second operand has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:42:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:42:54,311 INFO L93 Difference]: Finished difference Result 17177 states and 21380 transitions. [2024-11-23 18:42:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2024-11-23 18:42:54,311 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-23 18:42:54,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:42:54,322 INFO L225 Difference]: With dead ends: 17177 [2024-11-23 18:42:54,322 INFO L226 Difference]: Without dead ends: 15214 [2024-11-23 18:42:54,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24928 ImplicationChecksByTransitivity, 46.6s TimeCoverageRelationStatistics Valid=12162, Invalid=59930, Unknown=0, NotChecked=0, Total=72092 [2024-11-23 18:42:54,331 INFO L435 NwaCegarLoop]: 1601 mSDtfsCounter, 23538 mSDsluCounter, 40558 mSDsCounter, 0 mSdLazyCounter, 3619 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23538 SdHoareTripleChecker+Valid, 42159 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 3619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:42:54,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23538 Valid, 42159 Invalid, 3816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 3619 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 18:42:54,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15214 states. [2024-11-23 18:42:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15214 to 12084. [2024-11-23 18:42:55,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12084 states, 12082 states have (on average 1.2680019864260883) internal successors, (15320), 12083 states have internal predecessors, (15320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:42:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12084 states to 12084 states and 15320 transitions. [2024-11-23 18:42:55,472 INFO L78 Accepts]: Start accepts. Automaton has 12084 states and 15320 transitions. Word has length 105 [2024-11-23 18:42:55,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:42:55,473 INFO L471 AbstractCegarLoop]: Abstraction has 12084 states and 15320 transitions. [2024-11-23 18:42:55,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:42:55,473 INFO L276 IsEmpty]: Start isEmpty. Operand 12084 states and 15320 transitions. [2024-11-23 18:42:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 18:42:55,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:42:55,475 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:42:55,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 18:42:55,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 18:42:55,675 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:42:55,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:42:55,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1322155965, now seen corresponding path program 1 times [2024-11-23 18:42:55,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:42:55,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018015922] [2024-11-23 18:42:55,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:42:55,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:42:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:42:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:42:56,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:42:56,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018015922] [2024-11-23 18:42:56,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018015922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:42:56,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888094887] [2024-11-23 18:42:56,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:42:56,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:42:56,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:42:56,748 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:42:56,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 18:42:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:42:56,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-23 18:42:56,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:43:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:43:02,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:43:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:43:11,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888094887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:43:11,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:43:11,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 32, 27] total 76 [2024-11-23 18:43:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718964342] [2024-11-23 18:43:11,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:43:11,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-23 18:43:11,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:43:11,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-23 18:43:11,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=627, Invalid=5073, Unknown=0, NotChecked=0, Total=5700 [2024-11-23 18:43:11,506 INFO L87 Difference]: Start difference. First operand 12084 states and 15320 transitions. Second operand has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:43:53,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:43:53,489 INFO L93 Difference]: Finished difference Result 20090 states and 25094 transitions. [2024-11-23 18:43:53,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2024-11-23 18:43:53,489 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-23 18:43:53,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:43:53,501 INFO L225 Difference]: With dead ends: 20090 [2024-11-23 18:43:53,501 INFO L226 Difference]: Without dead ends: 15952 [2024-11-23 18:43:53,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12702 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=6924, Invalid=33276, Unknown=0, NotChecked=0, Total=40200 [2024-11-23 18:43:53,507 INFO L435 NwaCegarLoop]: 1560 mSDtfsCounter, 22080 mSDsluCounter, 30508 mSDsCounter, 0 mSdLazyCounter, 3714 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22080 SdHoareTripleChecker+Valid, 32068 SdHoareTripleChecker+Invalid, 3862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:43:53,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22080 Valid, 32068 Invalid, 3862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 3714 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-23 18:43:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15952 states. [2024-11-23 18:43:54,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15952 to 15181. [2024-11-23 18:43:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15181 states, 15179 states have (on average 1.2534422557480729) internal successors, (19026), 15180 states have internal predecessors, (19026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:43:55,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15181 states to 15181 states and 19026 transitions. [2024-11-23 18:43:55,010 INFO L78 Accepts]: Start accepts. Automaton has 15181 states and 19026 transitions. Word has length 105 [2024-11-23 18:43:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:43:55,010 INFO L471 AbstractCegarLoop]: Abstraction has 15181 states and 19026 transitions. [2024-11-23 18:43:55,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:43:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 15181 states and 19026 transitions. [2024-11-23 18:43:55,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 18:43:55,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:43:55,012 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:43:55,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 18:43:55,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 18:43:55,213 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:43:55,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:43:55,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1973850741, now seen corresponding path program 1 times [2024-11-23 18:43:55,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:43:55,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757803234] [2024-11-23 18:43:55,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:43:55,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:43:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:43:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:43:56,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:43:56,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757803234] [2024-11-23 18:43:56,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757803234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:43:56,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221592639] [2024-11-23 18:43:56,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:43:56,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:43:56,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:43:56,889 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:43:56,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 18:43:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:43:57,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-23 18:43:57,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:43:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:43:59,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:44:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:44:03,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221592639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:44:03,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:44:03,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 21] total 59 [2024-11-23 18:44:03,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530280012] [2024-11-23 18:44:03,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:44:03,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-23 18:44:03,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:44:03,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-23 18:44:03,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=3177, Unknown=0, NotChecked=0, Total=3422 [2024-11-23 18:44:03,354 INFO L87 Difference]: Start difference. First operand 15181 states and 19026 transitions. Second operand has 59 states, 59 states have (on average 4.915254237288136) internal successors, (290), 59 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:44:24,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:44:24,885 INFO L93 Difference]: Finished difference Result 31457 states and 38456 transitions. [2024-11-23 18:44:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-23 18:44:24,885 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.915254237288136) internal successors, (290), 59 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-23 18:44:24,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:44:24,902 INFO L225 Difference]: With dead ends: 31457 [2024-11-23 18:44:24,903 INFO L226 Difference]: Without dead ends: 23596 [2024-11-23 18:44:24,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5470 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=3809, Invalid=18541, Unknown=0, NotChecked=0, Total=22350 [2024-11-23 18:44:24,909 INFO L435 NwaCegarLoop]: 1619 mSDtfsCounter, 25129 mSDsluCounter, 41726 mSDsCounter, 0 mSdLazyCounter, 3366 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25129 SdHoareTripleChecker+Valid, 43345 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 3366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:44:24,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25129 Valid, 43345 Invalid, 3506 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [140 Valid, 3366 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-23 18:44:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23596 states. [2024-11-23 18:44:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23596 to 15203. [2024-11-23 18:44:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15203 states, 15201 states have (on average 1.2504440497335703) internal successors, (19008), 15202 states have internal predecessors, (19008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:44:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15203 states to 15203 states and 19008 transitions. [2024-11-23 18:44:26,938 INFO L78 Accepts]: Start accepts. Automaton has 15203 states and 19008 transitions. Word has length 105 [2024-11-23 18:44:26,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:44:26,938 INFO L471 AbstractCegarLoop]: Abstraction has 15203 states and 19008 transitions. [2024-11-23 18:44:26,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.915254237288136) internal successors, (290), 59 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:44:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand 15203 states and 19008 transitions. [2024-11-23 18:44:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 18:44:26,941 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:44:26,941 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:44:26,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-23 18:44:27,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:44:27,141 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:44:27,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:44:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1775421751, now seen corresponding path program 1 times [2024-11-23 18:44:27,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:44:27,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546226256] [2024-11-23 18:44:27,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:44:27,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:44:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:44:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:44:27,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:44:27,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546226256] [2024-11-23 18:44:27,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546226256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:44:27,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929356256] [2024-11-23 18:44:27,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:44:27,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:44:27,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:44:27,730 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:44:27,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 18:44:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:44:27,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 18:44:27,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:44:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:44:29,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:44:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:44:32,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929356256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:44:32,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:44:32,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 17] total 44 [2024-11-23 18:44:32,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812260502] [2024-11-23 18:44:32,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:44:32,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-23 18:44:32,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:44:32,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-23 18:44:32,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1689, Unknown=0, NotChecked=0, Total=1892 [2024-11-23 18:44:32,704 INFO L87 Difference]: Start difference. First operand 15203 states and 19008 transitions. Second operand has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:44:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:44:43,168 INFO L93 Difference]: Finished difference Result 39918 states and 48807 transitions. [2024-11-23 18:44:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-23 18:44:43,169 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-23 18:44:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:44:43,190 INFO L225 Difference]: With dead ends: 39918 [2024-11-23 18:44:43,190 INFO L226 Difference]: Without dead ends: 30281 [2024-11-23 18:44:43,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3957 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2529, Invalid=10811, Unknown=0, NotChecked=0, Total=13340 [2024-11-23 18:44:43,195 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 27874 mSDsluCounter, 17929 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27874 SdHoareTripleChecker+Valid, 19502 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:44:43,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27874 Valid, 19502 Invalid, 1597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 18:44:43,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30281 states. [2024-11-23 18:44:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30281 to 22750. [2024-11-23 18:44:45,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22750 states, 22748 states have (on average 1.2368559873395464) internal successors, (28136), 22749 states have internal predecessors, (28136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:44:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22750 states to 22750 states and 28136 transitions. [2024-11-23 18:44:45,846 INFO L78 Accepts]: Start accepts. Automaton has 22750 states and 28136 transitions. Word has length 107 [2024-11-23 18:44:45,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:44:45,846 INFO L471 AbstractCegarLoop]: Abstraction has 22750 states and 28136 transitions. [2024-11-23 18:44:45,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:44:45,847 INFO L276 IsEmpty]: Start isEmpty. Operand 22750 states and 28136 transitions. [2024-11-23 18:44:45,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 18:44:45,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:44:45,848 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:44:45,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-23 18:44:46,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:44:46,048 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:44:46,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:44:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2088015337, now seen corresponding path program 1 times [2024-11-23 18:44:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:44:46,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565423880] [2024-11-23 18:44:46,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:44:46,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:44:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:44:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 24 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:44:47,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:44:47,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565423880] [2024-11-23 18:44:47,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565423880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:44:47,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130340049] [2024-11-23 18:44:47,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:44:47,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:44:47,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:44:47,084 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:44:47,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 18:44:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:44:47,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 18:44:47,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:44:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:44:48,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:44:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 41 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:44:50,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130340049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:44:50,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:44:50,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 12] total 40 [2024-11-23 18:44:50,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735572475] [2024-11-23 18:44:50,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:44:50,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-23 18:44:50,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:44:50,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-23 18:44:50,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2024-11-23 18:44:50,642 INFO L87 Difference]: Start difference. First operand 22750 states and 28136 transitions. Second operand has 40 states, 40 states have (on average 7.3) internal successors, (292), 40 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:44:57,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:44:57,318 INFO L93 Difference]: Finished difference Result 50479 states and 61519 transitions. [2024-11-23 18:44:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-23 18:44:57,319 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 7.3) internal successors, (292), 40 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-23 18:44:57,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:44:57,346 INFO L225 Difference]: With dead ends: 50479 [2024-11-23 18:44:57,346 INFO L226 Difference]: Without dead ends: 35186 [2024-11-23 18:44:57,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=972, Invalid=4140, Unknown=0, NotChecked=0, Total=5112 [2024-11-23 18:44:57,355 INFO L435 NwaCegarLoop]: 1571 mSDtfsCounter, 21303 mSDsluCounter, 21033 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21303 SdHoareTripleChecker+Valid, 22604 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:44:57,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21303 Valid, 22604 Invalid, 1180 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 18:44:57,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35186 states. [2024-11-23 18:45:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35186 to 28059. [2024-11-23 18:45:01,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28059 states, 28057 states have (on average 1.225362654596001) internal successors, (34380), 28058 states have internal predecessors, (34380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:45:01,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28059 states to 28059 states and 34380 transitions. [2024-11-23 18:45:01,114 INFO L78 Accepts]: Start accepts. Automaton has 28059 states and 34380 transitions. Word has length 107 [2024-11-23 18:45:01,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:45:01,114 INFO L471 AbstractCegarLoop]: Abstraction has 28059 states and 34380 transitions. [2024-11-23 18:45:01,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.3) internal successors, (292), 40 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:45:01,114 INFO L276 IsEmpty]: Start isEmpty. Operand 28059 states and 34380 transitions. [2024-11-23 18:45:01,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 18:45:01,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:45:01,115 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:45:01,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-23 18:45:01,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:45:01,316 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:45:01,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:45:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash 117034249, now seen corresponding path program 1 times [2024-11-23 18:45:01,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:45:01,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060310651] [2024-11-23 18:45:01,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:45:01,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:45:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:45:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:45:03,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:45:03,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060310651] [2024-11-23 18:45:03,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060310651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:45:03,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170876388] [2024-11-23 18:45:03,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:45:03,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:45:03,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:45:03,323 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:45:03,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 18:45:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:45:03,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-23 18:45:03,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:45:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:45:08,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:45:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:45:16,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170876388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:45:16,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:45:16,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27, 23] total 77 [2024-11-23 18:45:16,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824640768] [2024-11-23 18:45:16,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:45:16,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-23 18:45:16,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:45:16,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-23 18:45:16,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=5434, Unknown=0, NotChecked=0, Total=5852 [2024-11-23 18:45:16,369 INFO L87 Difference]: Start difference. First operand 28059 states and 34380 transitions. Second operand has 77 states, 77 states have (on average 3.792207792207792) internal successors, (292), 77 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:46:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:46:42,123 INFO L93 Difference]: Finished difference Result 50616 states and 61295 transitions. [2024-11-23 18:46:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2024-11-23 18:46:42,123 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.792207792207792) internal successors, (292), 77 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-23 18:46:42,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:46:42,161 INFO L225 Difference]: With dead ends: 50616 [2024-11-23 18:46:42,161 INFO L226 Difference]: Without dead ends: 33033 [2024-11-23 18:46:42,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23641 ImplicationChecksByTransitivity, 78.8s TimeCoverageRelationStatistics Valid=9158, Invalid=57664, Unknown=0, NotChecked=0, Total=66822 [2024-11-23 18:46:42,177 INFO L435 NwaCegarLoop]: 1638 mSDtfsCounter, 26638 mSDsluCounter, 53416 mSDsCounter, 0 mSdLazyCounter, 6686 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26638 SdHoareTripleChecker+Valid, 55054 SdHoareTripleChecker+Invalid, 6873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 6686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:46:42,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26638 Valid, 55054 Invalid, 6873 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [187 Valid, 6686 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-23 18:46:42,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33033 states. [2024-11-23 18:46:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33033 to 28354. [2024-11-23 18:46:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28354 states, 28352 states have (on average 1.2233704853273137) internal successors, (34685), 28353 states have internal predecessors, (34685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:46:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28354 states to 28354 states and 34685 transitions. [2024-11-23 18:46:46,485 INFO L78 Accepts]: Start accepts. Automaton has 28354 states and 34685 transitions. Word has length 107 [2024-11-23 18:46:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:46:46,486 INFO L471 AbstractCegarLoop]: Abstraction has 28354 states and 34685 transitions. [2024-11-23 18:46:46,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.792207792207792) internal successors, (292), 77 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:46:46,486 INFO L276 IsEmpty]: Start isEmpty. Operand 28354 states and 34685 transitions. [2024-11-23 18:46:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 18:46:46,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:46:46,487 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:46:46,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-23 18:46:46,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:46:46,688 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:46:46,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:46:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1360080118, now seen corresponding path program 1 times [2024-11-23 18:46:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:46:46,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582690683] [2024-11-23 18:46:46,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:46:46,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:46:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:46:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:46:48,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:46:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582690683] [2024-11-23 18:46:48,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582690683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:46:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127412124] [2024-11-23 18:46:48,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:46:48,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:46:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:46:48,176 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:46:48,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 18:46:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:46:48,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-23 18:46:48,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:46:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:46:51,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:47:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:47:01,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127412124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:47:01,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:47:01,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 28] total 76 [2024-11-23 18:47:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544816538] [2024-11-23 18:47:01,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:47:01,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-23 18:47:01,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:47:01,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-23 18:47:01,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=5042, Unknown=0, NotChecked=0, Total=5700 [2024-11-23 18:47:01,069 INFO L87 Difference]: Start difference. First operand 28354 states and 34685 transitions. Second operand has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:48:04,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:48:04,539 INFO L93 Difference]: Finished difference Result 50377 states and 60977 transitions. [2024-11-23 18:48:04,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-11-23 18:48:04,540 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-23 18:48:04,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:48:04,579 INFO L225 Difference]: With dead ends: 50377 [2024-11-23 18:48:04,580 INFO L226 Difference]: Without dead ends: 33041 [2024-11-23 18:48:04,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18130 ImplicationChecksByTransitivity, 58.9s TimeCoverageRelationStatistics Valid=9606, Invalid=46326, Unknown=0, NotChecked=0, Total=55932 [2024-11-23 18:48:04,596 INFO L435 NwaCegarLoop]: 1557 mSDtfsCounter, 27373 mSDsluCounter, 36788 mSDsCounter, 0 mSdLazyCounter, 4190 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27373 SdHoareTripleChecker+Valid, 38345 SdHoareTripleChecker+Invalid, 4355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 4190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:48:04,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27373 Valid, 38345 Invalid, 4355 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [165 Valid, 4190 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-23 18:48:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33041 states. [2024-11-23 18:48:09,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33041 to 27217. [2024-11-23 18:48:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27217 states, 27215 states have (on average 1.2257578541245637) internal successors, (33359), 27216 states have internal predecessors, (33359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:48:09,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27217 states to 27217 states and 33359 transitions. [2024-11-23 18:48:09,216 INFO L78 Accepts]: Start accepts. Automaton has 27217 states and 33359 transitions. Word has length 108 [2024-11-23 18:48:09,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:48:09,216 INFO L471 AbstractCegarLoop]: Abstraction has 27217 states and 33359 transitions. [2024-11-23 18:48:09,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:48:09,217 INFO L276 IsEmpty]: Start isEmpty. Operand 27217 states and 33359 transitions. [2024-11-23 18:48:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 18:48:09,218 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:48:09,218 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:48:09,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-23 18:48:09,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:48:09,418 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:48:09,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:48:09,419 INFO L85 PathProgramCache]: Analyzing trace with hash 896728914, now seen corresponding path program 1 times [2024-11-23 18:48:09,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:48:09,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402561556] [2024-11-23 18:48:09,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:48:09,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:48:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:48:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:48:11,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:48:11,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402561556] [2024-11-23 18:48:11,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402561556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:48:11,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301304130] [2024-11-23 18:48:11,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:48:11,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:48:11,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:48:11,348 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:48:11,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 18:48:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:48:11,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-23 18:48:11,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:48:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:48:15,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:48:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:48:23,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301304130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:48:23,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:48:23,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 26] total 75 [2024-11-23 18:48:23,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180644358] [2024-11-23 18:48:23,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:48:23,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-23 18:48:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:48:23,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-23 18:48:23,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=5136, Unknown=0, NotChecked=0, Total=5550 [2024-11-23 18:48:23,327 INFO L87 Difference]: Start difference. First operand 27217 states and 33359 transitions. Second operand has 75 states, 75 states have (on average 3.84) internal successors, (288), 75 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:49:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:49:54,721 INFO L93 Difference]: Finished difference Result 39147 states and 47587 transitions. [2024-11-23 18:49:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2024-11-23 18:49:54,722 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.84) internal successors, (288), 75 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-23 18:49:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:49:54,745 INFO L225 Difference]: With dead ends: 39147 [2024-11-23 18:49:54,746 INFO L226 Difference]: Without dead ends: 30631 [2024-11-23 18:49:54,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21772 ImplicationChecksByTransitivity, 86.3s TimeCoverageRelationStatistics Valid=9343, Invalid=57997, Unknown=0, NotChecked=0, Total=67340 [2024-11-23 18:49:54,754 INFO L435 NwaCegarLoop]: 1564 mSDtfsCounter, 42538 mSDsluCounter, 40311 mSDsCounter, 0 mSdLazyCounter, 3733 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42538 SdHoareTripleChecker+Valid, 41875 SdHoareTripleChecker+Invalid, 3958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 3733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:49:54,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42538 Valid, 41875 Invalid, 3958 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [225 Valid, 3733 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-23 18:49:54,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30631 states. [2024-11-23 18:50:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30631 to 27815. [2024-11-23 18:50:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27815 states, 27813 states have (on average 1.2236723834178262) internal successors, (34034), 27814 states have internal predecessors, (34034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:50:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27815 states to 27815 states and 34034 transitions. [2024-11-23 18:50:00,398 INFO L78 Accepts]: Start accepts. Automaton has 27815 states and 34034 transitions. Word has length 108 [2024-11-23 18:50:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:50:00,398 INFO L471 AbstractCegarLoop]: Abstraction has 27815 states and 34034 transitions. [2024-11-23 18:50:00,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.84) internal successors, (288), 75 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:50:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 27815 states and 34034 transitions. [2024-11-23 18:50:00,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 18:50:00,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:50:00,400 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:50:00,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-23 18:50:00,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:50:00,600 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:50:00,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:50:00,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1964330765, now seen corresponding path program 1 times [2024-11-23 18:50:00,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:50:00,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833863293] [2024-11-23 18:50:00,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:50:00,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:50:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:50:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:50:02,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:50:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833863293] [2024-11-23 18:50:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833863293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:50:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427718639] [2024-11-23 18:50:02,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:50:02,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:50:02,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:50:02,778 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:50:02,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 18:50:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:50:02,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-23 18:50:02,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:50:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:50:09,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:50:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:50:16,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427718639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:50:16,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:50:16,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 73 [2024-11-23 18:50:16,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208956009] [2024-11-23 18:50:16,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:50:16,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-23 18:50:16,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:50:16,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-23 18:50:16,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=4884, Unknown=0, NotChecked=0, Total=5256 [2024-11-23 18:50:16,192 INFO L87 Difference]: Start difference. First operand 27815 states and 34034 transitions. Second operand has 73 states, 73 states have (on average 4.232876712328767) internal successors, (309), 73 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:51:25,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:51:25,741 INFO L93 Difference]: Finished difference Result 48452 states and 58769 transitions. [2024-11-23 18:51:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-23 18:51:25,742 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.232876712328767) internal successors, (309), 73 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-23 18:51:25,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:51:25,764 INFO L225 Difference]: With dead ends: 48452 [2024-11-23 18:51:25,764 INFO L226 Difference]: Without dead ends: 29952 [2024-11-23 18:51:25,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11546 ImplicationChecksByTransitivity, 62.0s TimeCoverageRelationStatistics Valid=5041, Invalid=37601, Unknown=0, NotChecked=0, Total=42642 [2024-11-23 18:51:25,772 INFO L435 NwaCegarLoop]: 1610 mSDtfsCounter, 31911 mSDsluCounter, 38471 mSDsCounter, 0 mSdLazyCounter, 5009 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31911 SdHoareTripleChecker+Valid, 40081 SdHoareTripleChecker+Invalid, 5232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 5009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:51:25,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31911 Valid, 40081 Invalid, 5232 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [223 Valid, 5009 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-23 18:51:25,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29952 states. [2024-11-23 18:51:30,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29952 to 23960. [2024-11-23 18:51:30,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23960 states, 23958 states have (on average 1.230570164454462) internal successors, (29482), 23959 states have internal predecessors, (29482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:51:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23960 states to 23960 states and 29482 transitions. [2024-11-23 18:51:30,953 INFO L78 Accepts]: Start accepts. Automaton has 23960 states and 29482 transitions. Word has length 109 [2024-11-23 18:51:30,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:51:30,953 INFO L471 AbstractCegarLoop]: Abstraction has 23960 states and 29482 transitions. [2024-11-23 18:51:30,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.232876712328767) internal successors, (309), 73 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:51:30,953 INFO L276 IsEmpty]: Start isEmpty. Operand 23960 states and 29482 transitions. [2024-11-23 18:51:30,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 18:51:30,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:51:30,955 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:51:30,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-23 18:51:31,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-23 18:51:31,155 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:51:31,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:51:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash 788698076, now seen corresponding path program 1 times [2024-11-23 18:51:31,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:51:31,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757462798] [2024-11-23 18:51:31,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:51:31,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:51:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:51:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:51:31,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:51:31,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757462798] [2024-11-23 18:51:31,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757462798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:51:31,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:51:31,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:51:31,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712130679] [2024-11-23 18:51:31,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:51:31,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:51:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:51:31,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:51:31,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:51:31,354 INFO L87 Difference]: Start difference. First operand 23960 states and 29482 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:51:40,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:51:40,486 INFO L93 Difference]: Finished difference Result 27756 states and 35846 transitions. [2024-11-23 18:51:40,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:51:40,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-11-23 18:51:40,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:51:40,508 INFO L225 Difference]: With dead ends: 27756 [2024-11-23 18:51:40,508 INFO L226 Difference]: Without dead ends: 25464 [2024-11-23 18:51:40,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:51:40,512 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 774 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 3825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-23 18:51:40,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 830 Invalid, 3825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-23 18:51:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25464 states. [2024-11-23 18:51:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25464 to 25462. [2024-11-23 18:51:44,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25462 states, 25460 states have (on average 1.2203456402199528) internal successors, (31070), 25461 states have internal predecessors, (31070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:51:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25462 states to 25462 states and 31070 transitions. [2024-11-23 18:51:44,748 INFO L78 Accepts]: Start accepts. Automaton has 25462 states and 31070 transitions. Word has length 119 [2024-11-23 18:51:44,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:51:44,749 INFO L471 AbstractCegarLoop]: Abstraction has 25462 states and 31070 transitions. [2024-11-23 18:51:44,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:51:44,749 INFO L276 IsEmpty]: Start isEmpty. Operand 25462 states and 31070 transitions. [2024-11-23 18:51:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 18:51:44,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:51:44,752 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:51:44,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-23 18:51:44,753 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:51:44,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:51:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash 289672907, now seen corresponding path program 1 times [2024-11-23 18:51:44,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:51:44,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158047978] [2024-11-23 18:51:44,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:51:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:51:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:51:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 190 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:51:45,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:51:45,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158047978] [2024-11-23 18:51:45,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158047978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:51:45,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947939214] [2024-11-23 18:51:45,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:51:45,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:51:45,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:51:45,379 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:51:45,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-23 18:51:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:51:45,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-23 18:51:45,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:51:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:51:48,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:51:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:51:57,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947939214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:51:57,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:51:57,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28, 27] total 59 [2024-11-23 18:51:57,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760670201] [2024-11-23 18:51:57,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:51:57,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-23 18:51:57,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:51:57,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-23 18:51:57,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=615, Invalid=2925, Unknown=0, NotChecked=0, Total=3540 [2024-11-23 18:51:57,464 INFO L87 Difference]: Start difference. First operand 25462 states and 31070 transitions. Second operand has 60 states, 60 states have (on average 6.05) internal successors, (363), 59 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:52:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:52:10,978 INFO L93 Difference]: Finished difference Result 43147 states and 52648 transitions. [2024-11-23 18:52:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-23 18:52:10,978 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.05) internal successors, (363), 59 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-23 18:52:10,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:52:11,005 INFO L225 Difference]: With dead ends: 43147 [2024-11-23 18:52:11,005 INFO L226 Difference]: Without dead ends: 32790 [2024-11-23 18:52:11,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3144 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2440, Invalid=9992, Unknown=0, NotChecked=0, Total=12432 [2024-11-23 18:52:11,012 INFO L435 NwaCegarLoop]: 1491 mSDtfsCounter, 27866 mSDsluCounter, 31439 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27866 SdHoareTripleChecker+Valid, 32930 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:52:11,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27866 Valid, 32930 Invalid, 2526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 18:52:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32790 states. [2024-11-23 18:52:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32790 to 20493. [2024-11-23 18:52:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20493 states, 20491 states have (on average 1.21677809770143) internal successors, (24933), 20492 states have internal predecessors, (24933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:52:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20493 states to 20493 states and 24933 transitions. [2024-11-23 18:52:14,772 INFO L78 Accepts]: Start accepts. Automaton has 20493 states and 24933 transitions. Word has length 146 [2024-11-23 18:52:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:52:14,772 INFO L471 AbstractCegarLoop]: Abstraction has 20493 states and 24933 transitions. [2024-11-23 18:52:14,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.05) internal successors, (363), 59 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:52:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 20493 states and 24933 transitions. [2024-11-23 18:52:14,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 18:52:14,774 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:52:14,774 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-23 18:52:14,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-23 18:52:14,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-23 18:52:14,975 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:52:14,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:52:14,975 INFO L85 PathProgramCache]: Analyzing trace with hash 283574013, now seen corresponding path program 1 times [2024-11-23 18:52:14,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:52:14,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021643858] [2024-11-23 18:52:14,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:52:14,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:52:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:52:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 55 proven. 182 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:52:15,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:52:15,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021643858] [2024-11-23 18:52:15,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021643858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:52:15,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787650774] [2024-11-23 18:52:15,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:52:15,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:52:15,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:52:15,970 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:52:15,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf0bf68-823d-47ea-95f8-9f5bc06d5f51/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-23 18:52:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:52:16,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-23 18:52:16,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:52:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 50 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:52:18,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:52:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 44 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:52:25,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787650774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:52:25,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:52:25,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 20] total 60 [2024-11-23 18:52:25,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928630794] [2024-11-23 18:52:25,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:52:25,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-23 18:52:25,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:52:25,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-23 18:52:25,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=3223, Unknown=0, NotChecked=0, Total=3540 [2024-11-23 18:52:25,594 INFO L87 Difference]: Start difference. First operand 20493 states and 24933 transitions. Second operand has 60 states, 60 states have (on average 6.833333333333333) internal successors, (410), 60 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)