./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/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_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/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 64bit --witnessprinter.graph.data.programhash 38bd35bc88609e3ab03fd0664ba55e28973f1f4c4d5b4f19ae2a936fbd22c96e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:20:31,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:20:31,368 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 00:20:31,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:20:31,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:20:31,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:20:31,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:20:31,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:20:31,429 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:20:31,429 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:20:31,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:20:31,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:20:31,430 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:20:31,431 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:20:31,431 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:20:31,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:20:31,432 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:20:31,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:20:31,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:20:31,432 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:20:31,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:20:31,432 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:20:31,433 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:20:31,433 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:20:31,433 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:20:31,433 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:20:31,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:20:31,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:20:31,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:20:31,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:31,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:20:31,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:20:31,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:20:31,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:20:31,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:31,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:20:31,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:20:31,435 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:20:31,435 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:20:31,435 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:20:31,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:20:31,435 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:20:31,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:20:31,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:20:31,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:20:31,435 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_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38bd35bc88609e3ab03fd0664ba55e28973f1f4c4d5b4f19ae2a936fbd22c96e [2024-11-24 00:20:31,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:20:31,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:20:31,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:20:31,823 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:20:31,823 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:20:31,825 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c [2024-11-24 00:20:34,889 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/data/e867de3e5/f5955b73e6844a9b82731cd676f5a703/FLAG8af6bc830 [2024-11-24 00:20:35,253 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:20:35,254 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c [2024-11-24 00:20:35,271 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/data/e867de3e5/f5955b73e6844a9b82731cd676f5a703/FLAG8af6bc830 [2024-11-24 00:20:35,289 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/data/e867de3e5/f5955b73e6844a9b82731cd676f5a703 [2024-11-24 00:20:35,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:20:35,294 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:20:35,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:20:35,296 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:20:35,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:20:35,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:20:35" (1/1) ... [2024-11-24 00:20:35,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f65530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:35, skipping insertion in model container [2024-11-24 00:20:35,304 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:20:35" (1/1) ... [2024-11-24 00:20:35,339 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:20:35,530 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_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c[1251,1264] [2024-11-24 00:20:35,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:20:35,820 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:20:35,845 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_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c[1251,1264] [2024-11-24 00:20:35,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:20:36,002 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:20:36,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36 WrapperNode [2024-11-24 00:20:36,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:20:36,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:20:36,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:20:36,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:20:36,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,243 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1299 [2024-11-24 00:20:36,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:20:36,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:20:36,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:20:36,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:20:36,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,369 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]. [2024-11-24 00:20:36,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,429 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:20:36,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:20:36,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:20:36,587 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:20:36,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (1/1) ... [2024-11-24 00:20:36,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:36,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:36,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:20:36,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:20:36,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:20:36,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:20:36,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:20:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:20:36,981 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:20:36,984 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:20:39,246 INFO L? ?]: Removed 798 outVars from TransFormulas that were not future-live. [2024-11-24 00:20:39,247 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:20:39,274 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:20:39,274 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 00:20:39,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:20:39 BoogieIcfgContainer [2024-11-24 00:20:39,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:20:39,277 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:20:39,277 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:20:39,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:20:39,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:20:35" (1/3) ... [2024-11-24 00:20:39,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2badf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:20:39, skipping insertion in model container [2024-11-24 00:20:39,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:36" (2/3) ... [2024-11-24 00:20:39,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2badf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:20:39, skipping insertion in model container [2024-11-24 00:20:39,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:20:39" (3/3) ... [2024-11-24 00:20:39,285 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_sym_ex_v.c [2024-11-24 00:20:39,300 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:20:39,301 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.sw_sym_ex_v.c that has 1 procedures, 382 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:20:39,372 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:20:39,390 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;@41029554, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:20:39,390 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:20:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 380 states have (on average 1.4973684210526317) internal successors, (569), 381 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:39,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-24 00:20:39,404 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:39,405 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] [2024-11-24 00:20:39,406 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:39,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:39,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1356964072, now seen corresponding path program 1 times [2024-11-24 00:20:39,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:39,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223396900] [2024-11-24 00:20:39,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:39,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:40,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:40,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223396900] [2024-11-24 00:20:40,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223396900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:40,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:40,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:20:40,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983398448] [2024-11-24 00:20:40,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:40,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:20:40,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:40,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:20:40,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:20:40,342 INFO L87 Difference]: Start difference. First operand has 382 states, 380 states have (on average 1.4973684210526317) internal successors, (569), 381 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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) [2024-11-24 00:20:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:40,489 INFO L93 Difference]: Finished difference Result 717 states and 1071 transitions. [2024-11-24 00:20:40,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:20:40,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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 [2024-11-24 00:20:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:40,502 INFO L225 Difference]: With dead ends: 717 [2024-11-24 00:20:40,502 INFO L226 Difference]: Without dead ends: 381 [2024-11-24 00:20:40,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:20:40,512 INFO L435 NwaCegarLoop]: 563 mSDtfsCounter, 0 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:40,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1683 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:20:40,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-24 00:20:40,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-11-24 00:20:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.4921052631578948) internal successors, (567), 380 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:40,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 567 transitions. [2024-11-24 00:20:40,598 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 567 transitions. Word has length 37 [2024-11-24 00:20:40,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:40,598 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 567 transitions. [2024-11-24 00:20:40,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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) [2024-11-24 00:20:40,599 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 567 transitions. [2024-11-24 00:20:40,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:20:40,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:40,602 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] [2024-11-24 00:20:40,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:20:40,603 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:40,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:40,603 INFO L85 PathProgramCache]: Analyzing trace with hash 885482089, now seen corresponding path program 1 times [2024-11-24 00:20:40,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:40,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713291296] [2024-11-24 00:20:40,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:40,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:40,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713291296] [2024-11-24 00:20:40,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713291296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:40,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:40,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:20:40,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764559039] [2024-11-24 00:20:40,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:40,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:20:40,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:40,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:20:40,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:20:40,912 INFO L87 Difference]: Start difference. First operand 381 states and 567 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 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) [2024-11-24 00:20:40,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:40,983 INFO L93 Difference]: Finished difference Result 718 states and 1069 transitions. [2024-11-24 00:20:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:20:40,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 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 [2024-11-24 00:20:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:40,986 INFO L225 Difference]: With dead ends: 718 [2024-11-24 00:20:40,986 INFO L226 Difference]: Without dead ends: 383 [2024-11-24 00:20:40,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:20:40,988 INFO L435 NwaCegarLoop]: 563 mSDtfsCounter, 0 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:40,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1679 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:20:40,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-24 00:20:41,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-11-24 00:20:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.4895287958115184) internal successors, (569), 382 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 569 transitions. [2024-11-24 00:20:41,019 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 569 transitions. Word has length 38 [2024-11-24 00:20:41,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:41,019 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 569 transitions. [2024-11-24 00:20:41,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 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) [2024-11-24 00:20:41,019 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 569 transitions. [2024-11-24 00:20:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 00:20:41,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:41,020 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] [2024-11-24 00:20:41,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:20:41,021 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:41,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash 582175249, now seen corresponding path program 1 times [2024-11-24 00:20:41,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:41,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070279576] [2024-11-24 00:20:41,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:41,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:41,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:41,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070279576] [2024-11-24 00:20:41,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070279576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:41,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:41,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:41,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77615189] [2024-11-24 00:20:41,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:41,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:41,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:41,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:41,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:41,402 INFO L87 Difference]: Start difference. First operand 383 states and 569 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 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) [2024-11-24 00:20:41,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:41,588 INFO L93 Difference]: Finished difference Result 1027 states and 1528 transitions. [2024-11-24 00:20:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:20:41,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 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 [2024-11-24 00:20:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:41,596 INFO L225 Difference]: With dead ends: 1027 [2024-11-24 00:20:41,597 INFO L226 Difference]: Without dead ends: 690 [2024-11-24 00:20:41,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:20:41,599 INFO L435 NwaCegarLoop]: 552 mSDtfsCounter, 1449 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:41,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 1650 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-11-24 00:20:41,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 397. [2024-11-24 00:20:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.4873737373737375) internal successors, (589), 396 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 589 transitions. [2024-11-24 00:20:41,644 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 589 transitions. Word has length 39 [2024-11-24 00:20:41,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:41,644 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 589 transitions. [2024-11-24 00:20:41,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 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) [2024-11-24 00:20:41,644 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 589 transitions. [2024-11-24 00:20:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-24 00:20:41,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:41,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:41,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:20:41,653 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:41,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1451602872, now seen corresponding path program 1 times [2024-11-24 00:20:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736172209] [2024-11-24 00:20:41,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:41,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:44,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:44,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736172209] [2024-11-24 00:20:44,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736172209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:44,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:44,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401410047] [2024-11-24 00:20:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:44,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:44,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:44,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:44,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:44,291 INFO L87 Difference]: Start difference. First operand 397 states and 589 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:44,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:44,486 INFO L93 Difference]: Finished difference Result 1003 states and 1491 transitions. [2024-11-24 00:20:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:20:44,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 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 206 [2024-11-24 00:20:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:44,491 INFO L225 Difference]: With dead ends: 1003 [2024-11-24 00:20:44,491 INFO L226 Difference]: Without dead ends: 666 [2024-11-24 00:20:44,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:20:44,493 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 1347 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:44,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 1647 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:44,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-24 00:20:44,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 448. [2024-11-24 00:20:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.4809843400447427) internal successors, (662), 447 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:44,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 662 transitions. [2024-11-24 00:20:44,511 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 662 transitions. Word has length 206 [2024-11-24 00:20:44,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:44,512 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 662 transitions. [2024-11-24 00:20:44,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:44,512 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 662 transitions. [2024-11-24 00:20:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-24 00:20:44,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:44,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:44,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:20:44,516 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:44,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash -736690901, now seen corresponding path program 1 times [2024-11-24 00:20:44,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:44,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592409414] [2024-11-24 00:20:44,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:44,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:47,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:47,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592409414] [2024-11-24 00:20:47,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592409414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:47,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:47,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:47,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634082549] [2024-11-24 00:20:47,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:47,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:47,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:47,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:47,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:47,324 INFO L87 Difference]: Start difference. First operand 448 states and 662 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:47,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:47,525 INFO L93 Difference]: Finished difference Result 1003 states and 1489 transitions. [2024-11-24 00:20:47,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:20:47,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 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 208 [2024-11-24 00:20:47,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:47,530 INFO L225 Difference]: With dead ends: 1003 [2024-11-24 00:20:47,530 INFO L226 Difference]: Without dead ends: 666 [2024-11-24 00:20:47,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:20:47,532 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 1281 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:47,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 1646 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:47,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-24 00:20:47,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 571. [2024-11-24 00:20:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.4824561403508771) internal successors, (845), 570 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:47,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 845 transitions. [2024-11-24 00:20:47,572 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 845 transitions. Word has length 208 [2024-11-24 00:20:47,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:47,572 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 845 transitions. [2024-11-24 00:20:47,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:47,573 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 845 transitions. [2024-11-24 00:20:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-24 00:20:47,579 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:47,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:47,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:20:47,580 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:47,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2057904229, now seen corresponding path program 1 times [2024-11-24 00:20:47,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:47,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082463757] [2024-11-24 00:20:47,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:47,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:49,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:49,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082463757] [2024-11-24 00:20:49,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082463757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:49,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:49,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:20:49,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979304029] [2024-11-24 00:20:49,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:49,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:20:49,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:49,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:20:49,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:20:49,823 INFO L87 Difference]: Start difference. First operand 571 states and 845 transitions. Second operand has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:50,058 INFO L93 Difference]: Finished difference Result 1011 states and 1500 transitions. [2024-11-24 00:20:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:20:50,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2024-11-24 00:20:50,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:50,064 INFO L225 Difference]: With dead ends: 1011 [2024-11-24 00:20:50,064 INFO L226 Difference]: Without dead ends: 674 [2024-11-24 00:20:50,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:20:50,066 INFO L435 NwaCegarLoop]: 546 mSDtfsCounter, 1301 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:50,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 2451 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:50,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-24 00:20:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 574. [2024-11-24 00:20:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.4816753926701571) internal successors, (849), 573 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:50,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 849 transitions. [2024-11-24 00:20:50,109 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 849 transitions. Word has length 209 [2024-11-24 00:20:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:50,110 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 849 transitions. [2024-11-24 00:20:50,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:50,110 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 849 transitions. [2024-11-24 00:20:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-24 00:20:50,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:50,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:50,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:20:50,114 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:50,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:50,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1244200430, now seen corresponding path program 1 times [2024-11-24 00:20:50,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:50,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702433631] [2024-11-24 00:20:50,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:50,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:51,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702433631] [2024-11-24 00:20:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702433631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:51,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:51,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:51,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591884379] [2024-11-24 00:20:51,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:51,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:51,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:51,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:51,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:51,805 INFO L87 Difference]: Start difference. First operand 574 states and 849 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:51,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:51,981 INFO L93 Difference]: Finished difference Result 1070 states and 1586 transitions. [2024-11-24 00:20:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:20:51,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2024-11-24 00:20:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:51,985 INFO L225 Difference]: With dead ends: 1070 [2024-11-24 00:20:51,985 INFO L226 Difference]: Without dead ends: 668 [2024-11-24 00:20:51,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:20:51,987 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 1311 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:51,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 1646 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:51,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-24 00:20:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 574. [2024-11-24 00:20:52,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.4799301919720769) internal successors, (848), 573 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:52,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 848 transitions. [2024-11-24 00:20:52,010 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 848 transitions. Word has length 210 [2024-11-24 00:20:52,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:52,010 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 848 transitions. [2024-11-24 00:20:52,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:52,011 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 848 transitions. [2024-11-24 00:20:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-24 00:20:52,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:52,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:52,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:20:52,026 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:52,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash 746144786, now seen corresponding path program 1 times [2024-11-24 00:20:52,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:52,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939977535] [2024-11-24 00:20:52,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:52,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:53,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:53,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939977535] [2024-11-24 00:20:53,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939977535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:53,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:53,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:53,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937534191] [2024-11-24 00:20:53,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:53,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:53,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:53,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:53,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:53,987 INFO L87 Difference]: Start difference. First operand 574 states and 848 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:54,162 INFO L93 Difference]: Finished difference Result 1038 states and 1537 transitions. [2024-11-24 00:20:54,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:20:54,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2024-11-24 00:20:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:54,166 INFO L225 Difference]: With dead ends: 1038 [2024-11-24 00:20:54,166 INFO L226 Difference]: Without dead ends: 668 [2024-11-24 00:20:54,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:20:54,168 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 1292 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:54,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 1646 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:54,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-24 00:20:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 574. [2024-11-24 00:20:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.4781849912739966) internal successors, (847), 573 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 847 transitions. [2024-11-24 00:20:54,190 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 847 transitions. Word has length 211 [2024-11-24 00:20:54,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:54,191 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 847 transitions. [2024-11-24 00:20:54,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:54,191 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 847 transitions. [2024-11-24 00:20:54,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-24 00:20:54,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:54,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:54,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:20:54,197 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:54,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:54,197 INFO L85 PathProgramCache]: Analyzing trace with hash -451875766, now seen corresponding path program 1 times [2024-11-24 00:20:54,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:54,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61908545] [2024-11-24 00:20:54,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:54,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:55,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:55,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61908545] [2024-11-24 00:20:55,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61908545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:55,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:55,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:20:55,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536117189] [2024-11-24 00:20:55,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:55,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:20:55,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:55,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:20:55,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:20:55,936 INFO L87 Difference]: Start difference. First operand 574 states and 847 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:56,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:56,201 INFO L93 Difference]: Finished difference Result 1042 states and 1542 transitions. [2024-11-24 00:20:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:20:56,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2024-11-24 00:20:56,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:56,207 INFO L225 Difference]: With dead ends: 1042 [2024-11-24 00:20:56,210 INFO L226 Difference]: Without dead ends: 676 [2024-11-24 00:20:56,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:20:56,212 INFO L435 NwaCegarLoop]: 546 mSDtfsCounter, 1312 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:56,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 2586 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:56,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2024-11-24 00:20:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 576. [2024-11-24 00:20:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 1.4765217391304348) internal successors, (849), 575 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 849 transitions. [2024-11-24 00:20:56,233 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 849 transitions. Word has length 212 [2024-11-24 00:20:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:56,234 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 849 transitions. [2024-11-24 00:20:56,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 849 transitions. [2024-11-24 00:20:56,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-24 00:20:56,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:56,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:56,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:20:56,238 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:56,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:56,239 INFO L85 PathProgramCache]: Analyzing trace with hash -458312135, now seen corresponding path program 1 times [2024-11-24 00:20:56,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:56,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908755556] [2024-11-24 00:20:56,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:56,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:58,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:58,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908755556] [2024-11-24 00:20:58,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908755556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:58,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:58,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:58,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512811316] [2024-11-24 00:20:58,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:58,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:58,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:58,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:58,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:58,211 INFO L87 Difference]: Start difference. First operand 576 states and 849 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:58,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:58,362 INFO L93 Difference]: Finished difference Result 1010 states and 1495 transitions. [2024-11-24 00:20:58,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:20:58,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2024-11-24 00:20:58,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:58,365 INFO L225 Difference]: With dead ends: 1010 [2024-11-24 00:20:58,366 INFO L226 Difference]: Without dead ends: 673 [2024-11-24 00:20:58,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:20:58,367 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 1228 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:58,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 1642 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:58,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-11-24 00:20:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 671. [2024-11-24 00:20:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 670 states have (on average 1.4776119402985075) internal successors, (990), 670 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 990 transitions. [2024-11-24 00:20:58,387 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 990 transitions. Word has length 213 [2024-11-24 00:20:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:58,387 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 990 transitions. [2024-11-24 00:20:58,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 990 transitions. [2024-11-24 00:20:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-24 00:20:58,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:58,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:58,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:20:58,394 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:58,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:58,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1340981493, now seen corresponding path program 1 times [2024-11-24 00:20:58,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:58,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625797981] [2024-11-24 00:20:58,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:58,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:00,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:00,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625797981] [2024-11-24 00:21:00,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625797981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:00,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:00,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:21:00,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524099366] [2024-11-24 00:21:00,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:00,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:21:00,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:00,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:21:00,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:21:00,078 INFO L87 Difference]: Start difference. First operand 671 states and 990 transitions. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:00,245 INFO L93 Difference]: Finished difference Result 1038 states and 1535 transitions. [2024-11-24 00:21:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:21:00,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2024-11-24 00:21:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:00,249 INFO L225 Difference]: With dead ends: 1038 [2024-11-24 00:21:00,250 INFO L226 Difference]: Without dead ends: 671 [2024-11-24 00:21:00,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:00,252 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 1238 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:00,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1646 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:00,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-24 00:21:00,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2024-11-24 00:21:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 670 states have (on average 1.4761194029850746) internal successors, (989), 670 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 989 transitions. [2024-11-24 00:21:00,274 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 989 transitions. Word has length 214 [2024-11-24 00:21:00,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:00,276 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 989 transitions. [2024-11-24 00:21:00,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 989 transitions. [2024-11-24 00:21:00,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-24 00:21:00,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:00,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:00,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:21:00,280 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:00,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1210162929, now seen corresponding path program 1 times [2024-11-24 00:21:00,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:00,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105377218] [2024-11-24 00:21:00,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:00,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:01,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105377218] [2024-11-24 00:21:01,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105377218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:01,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:01,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:21:01,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811042607] [2024-11-24 00:21:01,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:01,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:21:01,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:01,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:21:01,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:01,923 INFO L87 Difference]: Start difference. First operand 671 states and 989 transitions. Second operand has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:02,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:02,147 INFO L93 Difference]: Finished difference Result 1041 states and 1538 transitions. [2024-11-24 00:21:02,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:21:02,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2024-11-24 00:21:02,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:02,152 INFO L225 Difference]: With dead ends: 1041 [2024-11-24 00:21:02,152 INFO L226 Difference]: Without dead ends: 678 [2024-11-24 00:21:02,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:21:02,154 INFO L435 NwaCegarLoop]: 546 mSDtfsCounter, 1256 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:02,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 2443 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:02,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2024-11-24 00:21:02,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 673. [2024-11-24 00:21:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 672 states have (on average 1.474702380952381) internal successors, (991), 672 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 991 transitions. [2024-11-24 00:21:02,177 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 991 transitions. Word has length 215 [2024-11-24 00:21:02,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:02,177 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 991 transitions. [2024-11-24 00:21:02,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:02,178 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 991 transitions. [2024-11-24 00:21:02,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-24 00:21:02,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:02,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:02,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:21:02,182 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:02,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:02,183 INFO L85 PathProgramCache]: Analyzing trace with hash 766167662, now seen corresponding path program 1 times [2024-11-24 00:21:02,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:02,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770947528] [2024-11-24 00:21:02,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:02,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:03,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:03,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770947528] [2024-11-24 00:21:03,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770947528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:03,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:03,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:21:03,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035888124] [2024-11-24 00:21:03,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:03,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:21:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:03,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:21:03,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:03,705 INFO L87 Difference]: Start difference. First operand 673 states and 991 transitions. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:03,929 INFO L93 Difference]: Finished difference Result 1145 states and 1691 transitions. [2024-11-24 00:21:03,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:21:03,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2024-11-24 00:21:03,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:03,933 INFO L225 Difference]: With dead ends: 1145 [2024-11-24 00:21:03,933 INFO L226 Difference]: Without dead ends: 720 [2024-11-24 00:21:03,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:21:03,936 INFO L435 NwaCegarLoop]: 545 mSDtfsCounter, 1406 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:03,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 2724 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-24 00:21:03,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 675. [2024-11-24 00:21:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.4732937685459941) internal successors, (993), 674 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:03,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 993 transitions. [2024-11-24 00:21:03,959 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 993 transitions. Word has length 216 [2024-11-24 00:21:03,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:03,959 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 993 transitions. [2024-11-24 00:21:03,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 993 transitions. [2024-11-24 00:21:03,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-24 00:21:03,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:03,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:03,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:21:03,963 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:03,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1237679278, now seen corresponding path program 1 times [2024-11-24 00:21:03,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:03,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537352297] [2024-11-24 00:21:03,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:03,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:05,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:05,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537352297] [2024-11-24 00:21:05,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537352297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:05,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:05,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:21:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048127061] [2024-11-24 00:21:05,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:05,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:21:05,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:05,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:21:05,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:21:05,380 INFO L87 Difference]: Start difference. First operand 675 states and 993 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:05,524 INFO L93 Difference]: Finished difference Result 1076 states and 1587 transitions. [2024-11-24 00:21:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:21:05,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2024-11-24 00:21:05,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:05,528 INFO L225 Difference]: With dead ends: 1076 [2024-11-24 00:21:05,528 INFO L226 Difference]: Without dead ends: 675 [2024-11-24 00:21:05,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:05,529 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 1252 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:05,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1646 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:05,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-11-24 00:21:05,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2024-11-24 00:21:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.4718100890207715) internal successors, (992), 674 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 992 transitions. [2024-11-24 00:21:05,550 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 992 transitions. Word has length 216 [2024-11-24 00:21:05,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:05,550 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 992 transitions. [2024-11-24 00:21:05,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:05,551 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 992 transitions. [2024-11-24 00:21:05,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-24 00:21:05,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:05,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:05,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:21:05,554 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:05,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:05,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1984221122, now seen corresponding path program 1 times [2024-11-24 00:21:05,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:05,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110505506] [2024-11-24 00:21:05,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:07,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:07,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110505506] [2024-11-24 00:21:07,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110505506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:07,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:07,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:21:07,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355783542] [2024-11-24 00:21:07,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:07,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:21:07,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:07,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:21:07,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:07,169 INFO L87 Difference]: Start difference. First operand 675 states and 992 transitions. Second operand has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 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) [2024-11-24 00:21:07,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:07,364 INFO L93 Difference]: Finished difference Result 1019 states and 1503 transitions. [2024-11-24 00:21:07,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:21:07,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 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 217 [2024-11-24 00:21:07,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:07,367 INFO L225 Difference]: With dead ends: 1019 [2024-11-24 00:21:07,368 INFO L226 Difference]: Without dead ends: 682 [2024-11-24 00:21:07,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:21:07,370 INFO L435 NwaCegarLoop]: 546 mSDtfsCounter, 1229 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:07,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 2721 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-24 00:21:07,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 678. [2024-11-24 00:21:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.4711964549483014) internal successors, (996), 677 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:07,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 996 transitions. [2024-11-24 00:21:07,391 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 996 transitions. Word has length 217 [2024-11-24 00:21:07,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:07,392 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 996 transitions. [2024-11-24 00:21:07,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 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) [2024-11-24 00:21:07,392 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 996 transitions. [2024-11-24 00:21:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-24 00:21:07,395 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:07,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:07,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:21:07,395 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:07,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:07,396 INFO L85 PathProgramCache]: Analyzing trace with hash 864700535, now seen corresponding path program 1 times [2024-11-24 00:21:07,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:07,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777501083] [2024-11-24 00:21:07,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:07,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:08,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:08,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777501083] [2024-11-24 00:21:08,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777501083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:08,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:08,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:21:08,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293991561] [2024-11-24 00:21:08,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:08,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:21:08,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:08,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:21:08,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:08,781 INFO L87 Difference]: Start difference. First operand 678 states and 996 transitions. Second operand has 7 states, 7 states have (on average 31.142857142857142) internal successors, (218), 7 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:08,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:08,971 INFO L93 Difference]: Finished difference Result 1084 states and 1596 transitions. [2024-11-24 00:21:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:21:08,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.142857142857142) internal successors, (218), 7 states have internal predecessors, (218), 0 states have call successors, (0), 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 218 [2024-11-24 00:21:08,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:08,975 INFO L225 Difference]: With dead ends: 1084 [2024-11-24 00:21:08,975 INFO L226 Difference]: Without dead ends: 684 [2024-11-24 00:21:08,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:21:08,977 INFO L435 NwaCegarLoop]: 546 mSDtfsCounter, 1270 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:08,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 2441 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-11-24 00:21:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 680. [2024-11-24 00:21:08,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 1.4698085419734905) internal successors, (998), 679 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 998 transitions. [2024-11-24 00:21:08,997 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 998 transitions. Word has length 218 [2024-11-24 00:21:08,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:08,998 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 998 transitions. [2024-11-24 00:21:08,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.142857142857142) internal successors, (218), 7 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 998 transitions. [2024-11-24 00:21:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-24 00:21:09,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:09,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:09,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:21:09,002 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:09,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:09,003 INFO L85 PathProgramCache]: Analyzing trace with hash -750976054, now seen corresponding path program 1 times [2024-11-24 00:21:09,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:09,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662870771] [2024-11-24 00:21:09,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:09,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:10,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:10,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662870771] [2024-11-24 00:21:10,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662870771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:10,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:10,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:21:10,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159165170] [2024-11-24 00:21:10,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:10,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:21:10,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:10,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:21:10,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:10,281 INFO L87 Difference]: Start difference. First operand 680 states and 998 transitions. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:10,491 INFO L93 Difference]: Finished difference Result 1122 states and 1652 transitions. [2024-11-24 00:21:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:21:10,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2024-11-24 00:21:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:10,494 INFO L225 Difference]: With dead ends: 1122 [2024-11-24 00:21:10,495 INFO L226 Difference]: Without dead ends: 726 [2024-11-24 00:21:10,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:21:10,496 INFO L435 NwaCegarLoop]: 545 mSDtfsCounter, 1387 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:10,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 2556 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:10,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-24 00:21:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 682. [2024-11-24 00:21:10,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.4684287812041117) internal successors, (1000), 681 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1000 transitions. [2024-11-24 00:21:10,517 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1000 transitions. Word has length 219 [2024-11-24 00:21:10,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:10,518 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 1000 transitions. [2024-11-24 00:21:10,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:10,518 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1000 transitions. [2024-11-24 00:21:10,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-24 00:21:10,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:10,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:10,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:21:10,522 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:10,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:10,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2125930342, now seen corresponding path program 1 times [2024-11-24 00:21:10,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:10,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572625549] [2024-11-24 00:21:10,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:10,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:11,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:11,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572625549] [2024-11-24 00:21:11,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572625549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:11,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:11,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:21:11,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60313763] [2024-11-24 00:21:11,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:11,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:21:11,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:11,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:21:11,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:11,738 INFO L87 Difference]: Start difference. First operand 682 states and 1000 transitions. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:11,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:11,931 INFO L93 Difference]: Finished difference Result 1090 states and 1605 transitions. [2024-11-24 00:21:11,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:21:11,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2024-11-24 00:21:11,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:11,935 INFO L225 Difference]: With dead ends: 1090 [2024-11-24 00:21:11,936 INFO L226 Difference]: Without dead ends: 728 [2024-11-24 00:21:11,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:21:11,937 INFO L435 NwaCegarLoop]: 545 mSDtfsCounter, 1369 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:11,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 2556 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:11,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2024-11-24 00:21:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 684. [2024-11-24 00:21:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4670571010248903) internal successors, (1002), 683 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1002 transitions. [2024-11-24 00:21:11,958 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1002 transitions. Word has length 219 [2024-11-24 00:21:11,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:11,960 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1002 transitions. [2024-11-24 00:21:11,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1002 transitions. [2024-11-24 00:21:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-24 00:21:11,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:11,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:11,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:21:11,966 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:11,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:11,967 INFO L85 PathProgramCache]: Analyzing trace with hash -372495870, now seen corresponding path program 1 times [2024-11-24 00:21:11,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:11,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489573170] [2024-11-24 00:21:11,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:11,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:13,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:13,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489573170] [2024-11-24 00:21:13,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489573170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:13,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:13,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:21:13,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231411508] [2024-11-24 00:21:13,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:13,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:21:13,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:13,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:21:13,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:13,477 INFO L87 Difference]: Start difference. First operand 684 states and 1002 transitions. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:13,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:13,663 INFO L93 Difference]: Finished difference Result 1067 states and 1571 transitions. [2024-11-24 00:21:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:21:13,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2024-11-24 00:21:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:13,666 INFO L225 Difference]: With dead ends: 1067 [2024-11-24 00:21:13,667 INFO L226 Difference]: Without dead ends: 730 [2024-11-24 00:21:13,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:21:13,668 INFO L435 NwaCegarLoop]: 545 mSDtfsCounter, 1350 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:13,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2640 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-24 00:21:13,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 690. [2024-11-24 00:21:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 1.4658925979680697) internal successors, (1010), 689 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1010 transitions. [2024-11-24 00:21:13,688 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1010 transitions. Word has length 219 [2024-11-24 00:21:13,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:13,688 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1010 transitions. [2024-11-24 00:21:13,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:13,689 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1010 transitions. [2024-11-24 00:21:13,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-24 00:21:13,691 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:13,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:13,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 00:21:13,693 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:13,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:13,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1034544030, now seen corresponding path program 1 times [2024-11-24 00:21:13,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:13,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372211465] [2024-11-24 00:21:13,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:13,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:15,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:15,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372211465] [2024-11-24 00:21:15,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372211465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:15,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984720048] [2024-11-24 00:21:15,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:15,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:15,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:15,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:15,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:21:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:15,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-24 00:21:15,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:16,298 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:21:16,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984720048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:16,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:21:16,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-24 00:21:16,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243064704] [2024-11-24 00:21:16,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:16,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:21:16,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:16,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:21:16,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:21:16,301 INFO L87 Difference]: Start difference. First operand 690 states and 1010 transitions. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:16,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:16,669 INFO L93 Difference]: Finished difference Result 1300 states and 1904 transitions. [2024-11-24 00:21:16,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:21:16,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2024-11-24 00:21:16,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:16,672 INFO L225 Difference]: With dead ends: 1300 [2024-11-24 00:21:16,672 INFO L226 Difference]: Without dead ends: 689 [2024-11-24 00:21:16,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:21:16,674 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 1325 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:16,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 1435 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:21:16,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-24 00:21:16,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2024-11-24 00:21:16,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.4636627906976745) internal successors, (1007), 688 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1007 transitions. [2024-11-24 00:21:16,698 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1007 transitions. Word has length 219 [2024-11-24 00:21:16,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:16,698 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1007 transitions. [2024-11-24 00:21:16,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1007 transitions. [2024-11-24 00:21:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-24 00:21:16,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:16,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:16,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:21:16,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:16,907 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:16,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:16,908 INFO L85 PathProgramCache]: Analyzing trace with hash -702625767, now seen corresponding path program 1 times [2024-11-24 00:21:16,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:16,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132293496] [2024-11-24 00:21:16,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:16,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:18,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:18,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132293496] [2024-11-24 00:21:18,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132293496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:18,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:18,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:21:18,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135449827] [2024-11-24 00:21:18,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:18,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:21:18,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:18,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:21:18,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:21:18,080 INFO L87 Difference]: Start difference. First operand 689 states and 1007 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:18,225 INFO L93 Difference]: Finished difference Result 1207 states and 1766 transitions. [2024-11-24 00:21:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:21:18,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2024-11-24 00:21:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:18,228 INFO L225 Difference]: With dead ends: 1207 [2024-11-24 00:21:18,229 INFO L226 Difference]: Without dead ends: 689 [2024-11-24 00:21:18,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:18,232 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 1295 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:18,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1647 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-24 00:21:18,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2024-11-24 00:21:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.4622093023255813) internal successors, (1006), 688 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1006 transitions. [2024-11-24 00:21:18,251 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1006 transitions. Word has length 220 [2024-11-24 00:21:18,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:18,252 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1006 transitions. [2024-11-24 00:21:18,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:18,252 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1006 transitions. [2024-11-24 00:21:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-24 00:21:18,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:18,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:18,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:21:18,254 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:18,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:18,255 INFO L85 PathProgramCache]: Analyzing trace with hash -608140986, now seen corresponding path program 1 times [2024-11-24 00:21:18,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:18,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281351377] [2024-11-24 00:21:18,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:18,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:19,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:19,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281351377] [2024-11-24 00:21:19,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281351377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:19,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:19,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:21:19,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677512009] [2024-11-24 00:21:19,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:19,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:21:19,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:19,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:21:19,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:21:19,684 INFO L87 Difference]: Start difference. First operand 689 states and 1006 transitions. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:19,834 INFO L93 Difference]: Finished difference Result 1171 states and 1713 transitions. [2024-11-24 00:21:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:21:19,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2024-11-24 00:21:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:19,838 INFO L225 Difference]: With dead ends: 1171 [2024-11-24 00:21:19,838 INFO L226 Difference]: Without dead ends: 687 [2024-11-24 00:21:19,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:21:19,841 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 1276 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:19,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 2193 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-24 00:21:19,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2024-11-24 00:21:19,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.4620991253644315) internal successors, (1003), 686 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1003 transitions. [2024-11-24 00:21:19,858 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1003 transitions. Word has length 221 [2024-11-24 00:21:19,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:19,859 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 1003 transitions. [2024-11-24 00:21:19,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1003 transitions. [2024-11-24 00:21:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-24 00:21:19,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:19,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:19,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 00:21:19,861 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:19,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash 2144206562, now seen corresponding path program 1 times [2024-11-24 00:21:19,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:19,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741030749] [2024-11-24 00:21:19,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:19,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:22,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:22,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741030749] [2024-11-24 00:21:22,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741030749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966484695] [2024-11-24 00:21:22,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:22,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:22,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:22,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:22,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:21:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:23,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-24 00:21:23,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:24,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:21:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966484695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:21:26,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:21:26,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 11] total 31 [2024-11-24 00:21:26,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801516682] [2024-11-24 00:21:26,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:21:26,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-24 00:21:26,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:26,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-24 00:21:26,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2024-11-24 00:21:26,631 INFO L87 Difference]: Start difference. First operand 687 states and 1003 transitions. Second operand has 31 states, 31 states have (on average 20.93548387096774) internal successors, (649), 31 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:28,546 INFO L93 Difference]: Finished difference Result 2008 states and 2931 transitions. [2024-11-24 00:21:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:21:28,547 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 20.93548387096774) internal successors, (649), 31 states have internal predecessors, (649), 0 states have call successors, (0), 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 221 [2024-11-24 00:21:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:28,551 INFO L225 Difference]: With dead ends: 2008 [2024-11-24 00:21:28,551 INFO L226 Difference]: Without dead ends: 1396 [2024-11-24 00:21:28,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 00:21:28,553 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 5211 mSDsluCounter, 13406 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 14307 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:28,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5211 Valid, 14307 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 00:21:28,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2024-11-24 00:21:28,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1016. [2024-11-24 00:21:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 1.4532019704433496) internal successors, (1475), 1015 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1475 transitions. [2024-11-24 00:21:28,579 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1475 transitions. Word has length 221 [2024-11-24 00:21:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:28,580 INFO L471 AbstractCegarLoop]: Abstraction has 1016 states and 1475 transitions. [2024-11-24 00:21:28,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 20.93548387096774) internal successors, (649), 31 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1475 transitions. [2024-11-24 00:21:28,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-24 00:21:28,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:28,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:28,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:21:28,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-24 00:21:28,787 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:28,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:28,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1886729116, now seen corresponding path program 1 times [2024-11-24 00:21:28,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:28,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236196887] [2024-11-24 00:21:28,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:28,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:29,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:29,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236196887] [2024-11-24 00:21:29,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236196887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:29,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:29,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:21:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681074922] [2024-11-24 00:21:29,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:29,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:21:29,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:29,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:21:29,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:21:29,579 INFO L87 Difference]: Start difference. First operand 1016 states and 1475 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:29,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:29,652 INFO L93 Difference]: Finished difference Result 1645 states and 2394 transitions. [2024-11-24 00:21:29,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:21:29,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2024-11-24 00:21:29,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:29,655 INFO L225 Difference]: With dead ends: 1645 [2024-11-24 00:21:29,656 INFO L226 Difference]: Without dead ends: 1031 [2024-11-24 00:21:29,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:29,658 INFO L435 NwaCegarLoop]: 552 mSDtfsCounter, 1405 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:29,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 1651 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:21:29,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2024-11-24 00:21:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1013. [2024-11-24 00:21:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 1.4515810276679841) internal successors, (1469), 1012 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1469 transitions. [2024-11-24 00:21:29,681 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1469 transitions. Word has length 222 [2024-11-24 00:21:29,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:29,681 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1469 transitions. [2024-11-24 00:21:29,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:29,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1469 transitions. [2024-11-24 00:21:29,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-24 00:21:29,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:29,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:29,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 00:21:29,684 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:29,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:29,685 INFO L85 PathProgramCache]: Analyzing trace with hash -786296213, now seen corresponding path program 1 times [2024-11-24 00:21:29,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:29,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484811593] [2024-11-24 00:21:29,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:29,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:30,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:30,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484811593] [2024-11-24 00:21:30,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484811593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:30,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:30,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:21:30,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124078012] [2024-11-24 00:21:30,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:30,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:21:30,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:30,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:21:30,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:21:30,228 INFO L87 Difference]: Start difference. First operand 1013 states and 1469 transitions. Second operand has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:30,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:30,349 INFO L93 Difference]: Finished difference Result 1350 states and 1970 transitions. [2024-11-24 00:21:30,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:21:30,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2024-11-24 00:21:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:30,352 INFO L225 Difference]: With dead ends: 1350 [2024-11-24 00:21:30,353 INFO L226 Difference]: Without dead ends: 735 [2024-11-24 00:21:30,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:21:30,355 INFO L435 NwaCegarLoop]: 551 mSDtfsCounter, 1375 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:30,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 1647 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:21:30,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-24 00:21:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2024-11-24 00:21:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 1.4591280653950953) internal successors, (1071), 734 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1071 transitions. [2024-11-24 00:21:30,372 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1071 transitions. Word has length 222 [2024-11-24 00:21:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:30,373 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 1071 transitions. [2024-11-24 00:21:30,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1071 transitions. [2024-11-24 00:21:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-24 00:21:30,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:30,377 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:30,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 00:21:30,377 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:30,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:30,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1862192727, now seen corresponding path program 1 times [2024-11-24 00:21:30,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:30,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199299607] [2024-11-24 00:21:30,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:30,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:35,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:35,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199299607] [2024-11-24 00:21:35,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199299607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:35,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:35,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:21:35,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805398525] [2024-11-24 00:21:35,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:35,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:21:35,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:35,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:21:35,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:21:35,798 INFO L87 Difference]: Start difference. First operand 735 states and 1071 transitions. Second operand has 9 states, 9 states have (on average 43.111111111111114) internal successors, (388), 9 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:36,282 INFO L93 Difference]: Finished difference Result 2012 states and 2974 transitions. [2024-11-24 00:21:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:21:36,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 43.111111111111114) internal successors, (388), 9 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2024-11-24 00:21:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:36,287 INFO L225 Difference]: With dead ends: 2012 [2024-11-24 00:21:36,287 INFO L226 Difference]: Without dead ends: 1675 [2024-11-24 00:21:36,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:21:36,288 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 1742 mSDsluCounter, 4880 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 5799 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:36,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1742 Valid, 5799 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:21:36,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2024-11-24 00:21:36,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1089. [2024-11-24 00:21:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1088 states have (on average 1.4678308823529411) internal successors, (1597), 1088 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:36,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1597 transitions. [2024-11-24 00:21:36,315 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1597 transitions. Word has length 388 [2024-11-24 00:21:36,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:36,315 INFO L471 AbstractCegarLoop]: Abstraction has 1089 states and 1597 transitions. [2024-11-24 00:21:36,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 43.111111111111114) internal successors, (388), 9 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:36,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1597 transitions. [2024-11-24 00:21:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-24 00:21:36,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:36,319 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:36,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 00:21:36,320 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:36,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:36,321 INFO L85 PathProgramCache]: Analyzing trace with hash 246447038, now seen corresponding path program 1 times [2024-11-24 00:21:36,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:36,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647869983] [2024-11-24 00:21:36,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:36,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 162 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:44,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:44,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647869983] [2024-11-24 00:21:44,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647869983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:44,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907151653] [2024-11-24 00:21:44,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:44,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:44,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:44,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:44,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:21:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:46,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-24 00:21:46,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 141 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:47,307 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:21:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 140 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:50,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907151653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:21:50,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:21:50,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 16] total 40 [2024-11-24 00:21:50,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243952283] [2024-11-24 00:21:50,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:21:50,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-24 00:21:50,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:50,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-24 00:21:50,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1329, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 00:21:50,558 INFO L87 Difference]: Start difference. First operand 1089 states and 1597 transitions. Second operand has 40 states, 40 states have (on average 22.575) internal successors, (903), 40 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:57,664 INFO L93 Difference]: Finished difference Result 6075 states and 9048 transitions. [2024-11-24 00:21:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-24 00:21:57,664 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 22.575) internal successors, (903), 40 states have internal predecessors, (903), 0 states have call successors, (0), 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 389 [2024-11-24 00:21:57,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:57,676 INFO L225 Difference]: With dead ends: 6075 [2024-11-24 00:21:57,676 INFO L226 Difference]: Without dead ends: 5407 [2024-11-24 00:21:57,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5671 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3061, Invalid=14761, Unknown=0, NotChecked=0, Total=17822 [2024-11-24 00:21:57,682 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 28100 mSDsluCounter, 20699 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28100 SdHoareTripleChecker+Valid, 21617 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:57,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28100 Valid, 21617 Invalid, 2729 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 00:21:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2024-11-24 00:21:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 1671. [2024-11-24 00:21:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 1.473053892215569) internal successors, (2460), 1670 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2460 transitions. [2024-11-24 00:21:57,735 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2460 transitions. Word has length 389 [2024-11-24 00:21:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:57,736 INFO L471 AbstractCegarLoop]: Abstraction has 1671 states and 2460 transitions. [2024-11-24 00:21:57,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 22.575) internal successors, (903), 40 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2460 transitions. [2024-11-24 00:21:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-24 00:21:57,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:57,741 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:57,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:21:57,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:21:57,942 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:57,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash 3502721, now seen corresponding path program 1 times [2024-11-24 00:21:57,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:57,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955885925] [2024-11-24 00:21:57,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:57,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 146 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:06,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955885925] [2024-11-24 00:22:06,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955885925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:22:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230625651] [2024-11-24 00:22:06,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:06,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:06,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:22:06,218 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:22:06,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:22:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:07,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-24 00:22:07,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:22:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:09,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:22:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:11,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230625651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:22:11,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:22:11,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 29 [2024-11-24 00:22:11,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791433758] [2024-11-24 00:22:11,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:22:11,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-24 00:22:11,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:11,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-24 00:22:11,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2024-11-24 00:22:11,492 INFO L87 Difference]: Start difference. First operand 1671 states and 2460 transitions. Second operand has 29 states, 29 states have (on average 33.48275862068966) internal successors, (971), 29 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:22:17,326 INFO L93 Difference]: Finished difference Result 7043 states and 10459 transitions. [2024-11-24 00:22:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-24 00:22:17,327 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 33.48275862068966) internal successors, (971), 29 states have internal predecessors, (971), 0 states have call successors, (0), 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 391 [2024-11-24 00:22:17,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:22:17,339 INFO L225 Difference]: With dead ends: 7043 [2024-11-24 00:22:17,339 INFO L226 Difference]: Without dead ends: 5793 [2024-11-24 00:22:17,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3587 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1892, Invalid=10318, Unknown=0, NotChecked=0, Total=12210 [2024-11-24 00:22:17,345 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 12846 mSDsluCounter, 15342 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12846 SdHoareTripleChecker+Valid, 16231 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:22:17,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12846 Valid, 16231 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-24 00:22:17,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5793 states. [2024-11-24 00:22:17,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5793 to 2072. [2024-11-24 00:22:17,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 2071 states have (on average 1.4698213423466924) internal successors, (3044), 2071 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3044 transitions. [2024-11-24 00:22:17,408 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3044 transitions. Word has length 391 [2024-11-24 00:22:17,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:22:17,409 INFO L471 AbstractCegarLoop]: Abstraction has 2072 states and 3044 transitions. [2024-11-24 00:22:17,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 33.48275862068966) internal successors, (971), 29 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:17,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3044 transitions. [2024-11-24 00:22:17,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-24 00:22:17,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:22:17,414 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:17,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:22:17,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 00:22:17,614 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:22:17,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:17,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1954999192, now seen corresponding path program 1 times [2024-11-24 00:22:17,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:17,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984219565] [2024-11-24 00:22:17,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:17,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 114 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:26,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:26,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984219565] [2024-11-24 00:22:26,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984219565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:22:26,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058594095] [2024-11-24 00:22:26,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:26,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:26,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:22:26,238 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:22:26,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:22:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:27,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-24 00:22:27,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:22:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 66 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:30,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:22:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 00:22:30,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058594095] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:22:30,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:22:30,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13, 10] total 26 [2024-11-24 00:22:30,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384857270] [2024-11-24 00:22:30,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:30,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:22:30,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:30,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:22:30,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-11-24 00:22:30,863 INFO L87 Difference]: Start difference. First operand 2072 states and 3044 transitions. Second operand has 7 states, 7 states have (on average 51.285714285714285) internal successors, (359), 7 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:31,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:22:31,043 INFO L93 Difference]: Finished difference Result 4278 states and 6313 transitions. [2024-11-24 00:22:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:22:31,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 51.285714285714285) internal successors, (359), 7 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 394 [2024-11-24 00:22:31,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:22:31,050 INFO L225 Difference]: With dead ends: 4278 [2024-11-24 00:22:31,050 INFO L226 Difference]: Without dead ends: 2890 [2024-11-24 00:22:31,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:22:31,053 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 425 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:22:31,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 2935 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:22:31,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2024-11-24 00:22:31,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2698. [2024-11-24 00:22:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2697 states have (on average 1.4720059325176122) internal successors, (3970), 2697 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 3970 transitions. [2024-11-24 00:22:31,094 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 3970 transitions. Word has length 394 [2024-11-24 00:22:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:22:31,095 INFO L471 AbstractCegarLoop]: Abstraction has 2698 states and 3970 transitions. [2024-11-24 00:22:31,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.285714285714285) internal successors, (359), 7 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 3970 transitions. [2024-11-24 00:22:31,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-24 00:22:31,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:22:31,100 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:31,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:22:31,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 00:22:31,301 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:22:31,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1184517162, now seen corresponding path program 1 times [2024-11-24 00:22:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335051595] [2024-11-24 00:22:31,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 158 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:35,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:35,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335051595] [2024-11-24 00:22:35,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335051595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:22:35,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662678466] [2024-11-24 00:22:35,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:35,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:35,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:22:35,983 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:22:35,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:22:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:37,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-24 00:22:37,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:22:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 93 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:40,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:22:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 93 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:48,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662678466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:22:48,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:22:48,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 18] total 40 [2024-11-24 00:22:48,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275166726] [2024-11-24 00:22:48,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:22:48,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-24 00:22:48,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:48,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-24 00:22:48,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1373, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 00:22:49,025 INFO L87 Difference]: Start difference. First operand 2698 states and 3970 transitions. Second operand has 40 states, 40 states have (on average 24.75) internal successors, (990), 40 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:22:56,837 INFO L93 Difference]: Finished difference Result 9204 states and 13596 transitions. [2024-11-24 00:22:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-24 00:22:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 24.75) internal successors, (990), 40 states have internal predecessors, (990), 0 states have call successors, (0), 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 394 [2024-11-24 00:22:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:22:56,851 INFO L225 Difference]: With dead ends: 9204 [2024-11-24 00:22:56,851 INFO L226 Difference]: Without dead ends: 6639 [2024-11-24 00:22:56,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2547 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1817, Invalid=7113, Unknown=0, NotChecked=0, Total=8930 [2024-11-24 00:22:56,858 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 20600 mSDsluCounter, 19948 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20600 SdHoareTripleChecker+Valid, 20415 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:22:56,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20600 Valid, 20415 Invalid, 2871 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-24 00:22:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2024-11-24 00:22:56,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 4237. [2024-11-24 00:22:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 4236 states have (on average 1.4714353163361662) internal successors, (6233), 4236 states have internal predecessors, (6233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 6233 transitions. [2024-11-24 00:22:56,933 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 6233 transitions. Word has length 394 [2024-11-24 00:22:56,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:22:56,934 INFO L471 AbstractCegarLoop]: Abstraction has 4237 states and 6233 transitions. [2024-11-24 00:22:56,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 24.75) internal successors, (990), 40 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:22:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 6233 transitions. [2024-11-24 00:22:56,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-11-24 00:22:56,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:22:56,939 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:56,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:22:57,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:57,140 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:22:57,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:57,140 INFO L85 PathProgramCache]: Analyzing trace with hash 142134016, now seen corresponding path program 1 times [2024-11-24 00:22:57,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:57,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710197587] [2024-11-24 00:22:57,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:57,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 129 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:04,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:04,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710197587] [2024-11-24 00:23:04,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710197587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:04,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492622264] [2024-11-24 00:23:04,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:04,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:04,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:04,053 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:04,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:23:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:05,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-24 00:23:05,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:23:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 92 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:07,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:23:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 92 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:08,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492622264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:23:08,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:23:08,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 39 [2024-11-24 00:23:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647505981] [2024-11-24 00:23:08,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:23:08,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-24 00:23:08,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:08,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-24 00:23:08,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 00:23:08,477 INFO L87 Difference]: Start difference. First operand 4237 states and 6233 transitions. Second operand has 39 states, 39 states have (on average 26.153846153846153) internal successors, (1020), 39 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:14,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:23:14,337 INFO L93 Difference]: Finished difference Result 10650 states and 15711 transitions. [2024-11-24 00:23:14,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-24 00:23:14,338 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 26.153846153846153) internal successors, (1020), 39 states have internal predecessors, (1020), 0 states have call successors, (0), 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 396 [2024-11-24 00:23:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:23:14,350 INFO L225 Difference]: With dead ends: 10650 [2024-11-24 00:23:14,350 INFO L226 Difference]: Without dead ends: 7113 [2024-11-24 00:23:14,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2573 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1375, Invalid=8131, Unknown=0, NotChecked=0, Total=9506 [2024-11-24 00:23:14,357 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 14414 mSDsluCounter, 17116 mSDsCounter, 0 mSdLazyCounter, 3315 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14414 SdHoareTripleChecker+Valid, 17935 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:23:14,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14414 Valid, 17935 Invalid, 3341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 3315 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-24 00:23:14,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2024-11-24 00:23:14,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 4892. [2024-11-24 00:23:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4892 states, 4891 states have (on average 1.4688202821508893) internal successors, (7184), 4891 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 7184 transitions. [2024-11-24 00:23:14,436 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 7184 transitions. Word has length 396 [2024-11-24 00:23:14,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:23:14,437 INFO L471 AbstractCegarLoop]: Abstraction has 4892 states and 7184 transitions. [2024-11-24 00:23:14,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 26.153846153846153) internal successors, (1020), 39 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:14,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 7184 transitions. [2024-11-24 00:23:14,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-24 00:23:14,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:23:14,441 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:23:14,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 00:23:14,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-24 00:23:14,642 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:23:14,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:23:14,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1809905775, now seen corresponding path program 1 times [2024-11-24 00:23:14,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:23:14,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507360456] [2024-11-24 00:23:14,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:14,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 110 proven. 84 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:23:21,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:21,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507360456] [2024-11-24 00:23:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507360456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438649657] [2024-11-24 00:23:21,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:21,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:21,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:21,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:21,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:23:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:23,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 00:23:23,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:23:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 67 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:25,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:23:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 00:23:26,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438649657] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:26,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:23:26,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 10] total 23 [2024-11-24 00:23:26,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665968875] [2024-11-24 00:23:26,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:23:26,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:23:26,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:26,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:23:26,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:23:26,208 INFO L87 Difference]: Start difference. First operand 4892 states and 7184 transitions. Second operand has 7 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:23:26,395 INFO L93 Difference]: Finished difference Result 8954 states and 13184 transitions. [2024-11-24 00:23:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:23:26,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 0 states have call successors, (0), 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 397 [2024-11-24 00:23:26,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:23:26,403 INFO L225 Difference]: With dead ends: 8954 [2024-11-24 00:23:26,403 INFO L226 Difference]: Without dead ends: 4892 [2024-11-24 00:23:26,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:23:26,407 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 313 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:23:26,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 3620 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:23:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2024-11-24 00:23:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 4892. [2024-11-24 00:23:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4892 states, 4891 states have (on average 1.4680024534859948) internal successors, (7180), 4891 states have internal predecessors, (7180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 7180 transitions. [2024-11-24 00:23:26,477 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 7180 transitions. Word has length 397 [2024-11-24 00:23:26,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:23:26,478 INFO L471 AbstractCegarLoop]: Abstraction has 4892 states and 7180 transitions. [2024-11-24 00:23:26,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:26,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 7180 transitions. [2024-11-24 00:23:26,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-24 00:23:26,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:23:26,481 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:23:26,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:23:26,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-24 00:23:26,682 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:23:26,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:23:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1433053513, now seen corresponding path program 1 times [2024-11-24 00:23:26,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:23:26,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216419641] [2024-11-24 00:23:26,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:26,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:23:32,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:32,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216419641] [2024-11-24 00:23:32,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216419641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:23:32,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:23:32,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:23:32,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243561691] [2024-11-24 00:23:32,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:23:32,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:23:32,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:32,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:23:32,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:23:32,340 INFO L87 Difference]: Start difference. First operand 4892 states and 7180 transitions. Second operand has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:23:32,491 INFO L93 Difference]: Finished difference Result 12784 states and 18804 transitions. [2024-11-24 00:23:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:23:32,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 0 states have call successors, (0), 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 398 [2024-11-24 00:23:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:23:32,500 INFO L225 Difference]: With dead ends: 12784 [2024-11-24 00:23:32,500 INFO L226 Difference]: Without dead ends: 8842 [2024-11-24 00:23:32,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:23:32,504 INFO L435 NwaCegarLoop]: 548 mSDtfsCounter, 284 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:23:32,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 3260 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:23:32,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2024-11-24 00:23:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 6468. [2024-11-24 00:23:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6468 states, 6467 states have (on average 1.4680686562548322) internal successors, (9494), 6467 states have internal predecessors, (9494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6468 states to 6468 states and 9494 transitions. [2024-11-24 00:23:32,593 INFO L78 Accepts]: Start accepts. Automaton has 6468 states and 9494 transitions. Word has length 398 [2024-11-24 00:23:32,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:23:32,593 INFO L471 AbstractCegarLoop]: Abstraction has 6468 states and 9494 transitions. [2024-11-24 00:23:32,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:32,593 INFO L276 IsEmpty]: Start isEmpty. Operand 6468 states and 9494 transitions. [2024-11-24 00:23:32,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-24 00:23:32,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:23:32,597 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:23:32,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-24 00:23:32,597 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:23:32,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:23:32,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1958619610, now seen corresponding path program 1 times [2024-11-24 00:23:32,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:23:32,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380821289] [2024-11-24 00:23:32,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:32,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 116 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:36,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:36,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380821289] [2024-11-24 00:23:36,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380821289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:36,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526255068] [2024-11-24 00:23:36,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:36,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:36,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:36,382 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:36,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:23:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:37,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-24 00:23:37,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:23:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 79 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:39,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:23:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 79 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:40,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526255068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:23:40,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:23:40,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 29 [2024-11-24 00:23:40,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491805584] [2024-11-24 00:23:40,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:23:40,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-24 00:23:40,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:40,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-24 00:23:40,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2024-11-24 00:23:40,854 INFO L87 Difference]: Start difference. First operand 6468 states and 9494 transitions. Second operand has 29 states, 29 states have (on average 36.37931034482759) internal successors, (1055), 29 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:45,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:23:45,350 INFO L93 Difference]: Finished difference Result 30363 states and 44679 transitions. [2024-11-24 00:23:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-24 00:23:45,350 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 36.37931034482759) internal successors, (1055), 29 states have internal predecessors, (1055), 0 states have call successors, (0), 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 399 [2024-11-24 00:23:45,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:23:45,371 INFO L225 Difference]: With dead ends: 30363 [2024-11-24 00:23:45,371 INFO L226 Difference]: Without dead ends: 25137 [2024-11-24 00:23:45,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3946 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1887, Invalid=10769, Unknown=0, NotChecked=0, Total=12656 [2024-11-24 00:23:45,381 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 26346 mSDsluCounter, 11838 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26346 SdHoareTripleChecker+Valid, 12706 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:23:45,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26346 Valid, 12706 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 00:23:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25137 states. [2024-11-24 00:23:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25137 to 22195. [2024-11-24 00:23:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22195 states, 22194 states have (on average 1.467784085788952) internal successors, (32576), 22194 states have internal predecessors, (32576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22195 states to 22195 states and 32576 transitions. [2024-11-24 00:23:45,663 INFO L78 Accepts]: Start accepts. Automaton has 22195 states and 32576 transitions. Word has length 399 [2024-11-24 00:23:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:23:45,663 INFO L471 AbstractCegarLoop]: Abstraction has 22195 states and 32576 transitions. [2024-11-24 00:23:45,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 36.37931034482759) internal successors, (1055), 29 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:23:45,664 INFO L276 IsEmpty]: Start isEmpty. Operand 22195 states and 32576 transitions. [2024-11-24 00:23:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-11-24 00:23:45,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:23:45,671 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:23:45,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:23:45,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:45,872 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:23:45,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:23:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1903707077, now seen corresponding path program 1 times [2024-11-24 00:23:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:23:45,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999195552] [2024-11-24 00:23:45,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:45,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 45 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:51,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:51,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999195552] [2024-11-24 00:23:51,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999195552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:51,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523758644] [2024-11-24 00:23:51,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:51,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:51,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:51,348 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:51,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:23:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:53,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 2501 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-24 00:23:53,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:23:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 43 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:55,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:23:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 42 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:58,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523758644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:23:58,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:23:58,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 16] total 40 [2024-11-24 00:23:58,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193334311] [2024-11-24 00:23:58,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:23:58,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-24 00:23:58,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:58,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-24 00:23:58,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1351, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 00:23:58,543 INFO L87 Difference]: Start difference. First operand 22195 states and 32576 transitions. Second operand has 40 states, 40 states have (on average 28.375) internal successors, (1135), 40 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:24:04,012 INFO L93 Difference]: Finished difference Result 61053 states and 89857 transitions. [2024-11-24 00:24:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-24 00:24:04,012 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 28.375) internal successors, (1135), 40 states have internal predecessors, (1135), 0 states have call successors, (0), 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 401 [2024-11-24 00:24:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:24:04,038 INFO L225 Difference]: With dead ends: 61053 [2024-11-24 00:24:04,038 INFO L226 Difference]: Without dead ends: 42991 [2024-11-24 00:24:04,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 775 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2962 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1681, Invalid=9031, Unknown=0, NotChecked=0, Total=10712 [2024-11-24 00:24:04,054 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 18433 mSDsluCounter, 16178 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18433 SdHoareTripleChecker+Valid, 17030 SdHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:24:04,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18433 Valid, 17030 Invalid, 3108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3083 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 00:24:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42991 states. [2024-11-24 00:24:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42991 to 31329. [2024-11-24 00:24:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31329 states, 31328 states have (on average 1.4693564862104187) internal successors, (46032), 31328 states have internal predecessors, (46032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:04,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31329 states to 31329 states and 46032 transitions. [2024-11-24 00:24:04,474 INFO L78 Accepts]: Start accepts. Automaton has 31329 states and 46032 transitions. Word has length 401 [2024-11-24 00:24:04,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:24:04,475 INFO L471 AbstractCegarLoop]: Abstraction has 31329 states and 46032 transitions. [2024-11-24 00:24:04,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 28.375) internal successors, (1135), 40 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:04,475 INFO L276 IsEmpty]: Start isEmpty. Operand 31329 states and 46032 transitions. [2024-11-24 00:24:04,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-24 00:24:04,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:24:04,482 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:24:04,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 00:24:04,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:24:04,683 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:24:04,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:24:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1756536980, now seen corresponding path program 1 times [2024-11-24 00:24:04,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:24:04,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427194578] [2024-11-24 00:24:04,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:04,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:24:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:10,981 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:24:10,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:24:10,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427194578] [2024-11-24 00:24:10,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427194578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:24:10,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:24:10,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:24:10,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290946302] [2024-11-24 00:24:10,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:24:10,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:24:10,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:24:10,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:24:10,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:24:10,984 INFO L87 Difference]: Start difference. First operand 31329 states and 46032 transitions. Second operand has 7 states, 7 states have (on average 53.857142857142854) internal successors, (377), 7 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:24:11,177 INFO L93 Difference]: Finished difference Result 64361 states and 94643 transitions. [2024-11-24 00:24:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:24:11,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.857142857142854) internal successors, (377), 7 states have internal predecessors, (377), 0 states have call successors, (0), 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 402 [2024-11-24 00:24:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:24:11,207 INFO L225 Difference]: With dead ends: 64361 [2024-11-24 00:24:11,207 INFO L226 Difference]: Without dead ends: 37165 [2024-11-24 00:24:11,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:24:11,227 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 254 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:24:11,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 2856 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:24:11,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37165 states. [2024-11-24 00:24:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37165 to 35941. [2024-11-24 00:24:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35941 states, 35940 states have (on average 1.4676683361157485) internal successors, (52748), 35940 states have internal predecessors, (52748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35941 states to 35941 states and 52748 transitions. [2024-11-24 00:24:11,633 INFO L78 Accepts]: Start accepts. Automaton has 35941 states and 52748 transitions. Word has length 402 [2024-11-24 00:24:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:24:11,634 INFO L471 AbstractCegarLoop]: Abstraction has 35941 states and 52748 transitions. [2024-11-24 00:24:11,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.857142857142854) internal successors, (377), 7 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 35941 states and 52748 transitions. [2024-11-24 00:24:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-24 00:24:11,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:24:11,642 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:24:11,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-24 00:24:11,643 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:24:11,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:24:11,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2039228677, now seen corresponding path program 1 times [2024-11-24 00:24:11,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:24:11,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645388827] [2024-11-24 00:24:11,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:11,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:24:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 98 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:18,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:24:18,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645388827] [2024-11-24 00:24:18,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645388827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:24:18,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890949969] [2024-11-24 00:24:18,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:18,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:24:18,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:24:18,028 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:24:18,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:24:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:20,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-24 00:24:20,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:24:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 161 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:21,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:24:23,317 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 189 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:23,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890949969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:24:23,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:24:23,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 13] total 35 [2024-11-24 00:24:23,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716809415] [2024-11-24 00:24:23,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:24:23,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-24 00:24:23,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:24:23,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-24 00:24:23,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1066, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 00:24:23,322 INFO L87 Difference]: Start difference. First operand 35941 states and 52748 transitions. Second operand has 35 states, 35 states have (on average 34.02857142857143) internal successors, (1191), 35 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:34,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:24:34,088 INFO L93 Difference]: Finished difference Result 241935 states and 356374 transitions. [2024-11-24 00:24:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2024-11-24 00:24:34,089 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 34.02857142857143) internal successors, (1191), 35 states have internal predecessors, (1191), 0 states have call successors, (0), 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 402 [2024-11-24 00:24:34,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:24:34,246 INFO L225 Difference]: With dead ends: 241935 [2024-11-24 00:24:34,246 INFO L226 Difference]: Without dead ends: 208757 [2024-11-24 00:24:34,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 839 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10795 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3534, Invalid=27266, Unknown=0, NotChecked=0, Total=30800 [2024-11-24 00:24:34,292 INFO L435 NwaCegarLoop]: 1315 mSDtfsCounter, 21426 mSDsluCounter, 36008 mSDsCounter, 0 mSdLazyCounter, 4912 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21426 SdHoareTripleChecker+Valid, 37323 SdHoareTripleChecker+Invalid, 4945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:24:34,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21426 Valid, 37323 Invalid, 4945 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 4912 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 00:24:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208757 states. [2024-11-24 00:24:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208757 to 91705. [2024-11-24 00:24:35,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91705 states, 91704 states have (on average 1.4716042920701387) internal successors, (134952), 91704 states have internal predecessors, (134952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91705 states to 91705 states and 134952 transitions. [2024-11-24 00:24:36,277 INFO L78 Accepts]: Start accepts. Automaton has 91705 states and 134952 transitions. Word has length 402 [2024-11-24 00:24:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:24:36,277 INFO L471 AbstractCegarLoop]: Abstraction has 91705 states and 134952 transitions. [2024-11-24 00:24:36,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 34.02857142857143) internal successors, (1191), 35 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 91705 states and 134952 transitions. [2024-11-24 00:24:36,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-24 00:24:36,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:24:36,283 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:24:36,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-24 00:24:36,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:24:36,483 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:24:36,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:24:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash -84803826, now seen corresponding path program 1 times [2024-11-24 00:24:36,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:24:36,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185334995] [2024-11-24 00:24:36,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:36,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:24:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 83 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:40,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:24:40,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185334995] [2024-11-24 00:24:40,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185334995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:24:40,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972852102] [2024-11-24 00:24:40,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:40,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:24:40,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:24:40,722 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:24:40,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:24:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:42,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 2505 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-24 00:24:42,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:24:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 63 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:44,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:24:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-24 00:24:45,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972852102] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:24:45,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:24:45,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 12] total 21 [2024-11-24 00:24:45,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706512155] [2024-11-24 00:24:45,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:24:45,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:24:45,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:24:45,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:24:45,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:24:45,096 INFO L87 Difference]: Start difference. First operand 91705 states and 134952 transitions. Second operand has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:24:45,550 INFO L93 Difference]: Finished difference Result 196303 states and 289021 transitions. [2024-11-24 00:24:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:24:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 0 states have call successors, (0), 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 403 [2024-11-24 00:24:45,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:24:45,633 INFO L225 Difference]: With dead ends: 196303 [2024-11-24 00:24:45,633 INFO L226 Difference]: Without dead ends: 105113 [2024-11-24 00:24:45,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 793 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:24:45,687 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 211 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:24:45,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1650 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:24:45,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105113 states. [2024-11-24 00:24:46,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105113 to 96233. [2024-11-24 00:24:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96233 states, 96232 states have (on average 1.4729819602626986) internal successors, (141748), 96232 states have internal predecessors, (141748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96233 states to 96233 states and 141748 transitions. [2024-11-24 00:24:46,922 INFO L78 Accepts]: Start accepts. Automaton has 96233 states and 141748 transitions. Word has length 403 [2024-11-24 00:24:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:24:46,922 INFO L471 AbstractCegarLoop]: Abstraction has 96233 states and 141748 transitions. [2024-11-24 00:24:46,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:46,922 INFO L276 IsEmpty]: Start isEmpty. Operand 96233 states and 141748 transitions. [2024-11-24 00:24:46,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-24 00:24:46,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:24:46,926 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:24:46,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:24:47,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8f86e2-10d9-4326-a4cb-450268fe2b7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 00:24:47,127 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:24:47,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:24:47,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1711737258, now seen corresponding path program 1 times [2024-11-24 00:24:47,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:24:47,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729580734] [2024-11-24 00:24:47,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:47,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:24:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 00:24:51,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:24:51,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729580734] [2024-11-24 00:24:51,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729580734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:24:51,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:24:51,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:24:51,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870636030] [2024-11-24 00:24:51,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:24:51,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:24:51,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:24:51,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:24:51,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:24:51,103 INFO L87 Difference]: Start difference. First operand 96233 states and 141748 transitions. Second operand has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:24:51,792 INFO L93 Difference]: Finished difference Result 192075 states and 282981 transitions. [2024-11-24 00:24:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:24:51,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 0 states have call successors, (0), 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 403 [2024-11-24 00:24:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:24:51,876 INFO L225 Difference]: With dead ends: 192075 [2024-11-24 00:24:51,876 INFO L226 Difference]: Without dead ends: 96483 [2024-11-24 00:24:51,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:24:51,931 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 370 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:24:51,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 2432 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:24:51,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96483 states. [2024-11-24 00:24:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96483 to 96483. [2024-11-24 00:24:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96483 states, 96482 states have (on average 1.4722746211728612) internal successors, (142048), 96482 states have internal predecessors, (142048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:53,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96483 states to 96483 states and 142048 transitions. [2024-11-24 00:24:53,225 INFO L78 Accepts]: Start accepts. Automaton has 96483 states and 142048 transitions. Word has length 403 [2024-11-24 00:24:53,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:24:53,225 INFO L471 AbstractCegarLoop]: Abstraction has 96483 states and 142048 transitions. [2024-11-24 00:24:53,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:53,225 INFO L276 IsEmpty]: Start isEmpty. Operand 96483 states and 142048 transitions. [2024-11-24 00:24:53,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-24 00:24:53,229 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:24:53,229 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:24:53,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-24 00:24:53,229 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:24:53,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:24:53,230 INFO L85 PathProgramCache]: Analyzing trace with hash -706249467, now seen corresponding path program 1 times [2024-11-24 00:24:53,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:24:53,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460521932] [2024-11-24 00:24:53,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:53,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:24:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 00:24:57,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:24:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460521932] [2024-11-24 00:24:57,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460521932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:24:57,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:24:57,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:24:57,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075435287] [2024-11-24 00:24:57,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:24:57,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:24:57,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:24:57,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:24:57,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:24:57,750 INFO L87 Difference]: Start difference. First operand 96483 states and 142048 transitions. Second operand has 10 states, 10 states have (on average 39.0) internal successors, (390), 10 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:58,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:24:58,473 INFO L93 Difference]: Finished difference Result 194419 states and 286291 transitions. [2024-11-24 00:24:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:24:58,473 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 39.0) internal successors, (390), 10 states have internal predecessors, (390), 0 states have call successors, (0), 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 404 [2024-11-24 00:24:58,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:24:58,553 INFO L225 Difference]: With dead ends: 194419 [2024-11-24 00:24:58,553 INFO L226 Difference]: Without dead ends: 98505 [2024-11-24 00:24:58,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:24:58,604 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 441 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:24:58,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 3866 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:24:58,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98505 states. [2024-11-24 00:24:59,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98505 to 98505. [2024-11-24 00:24:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98505 states, 98504 states have (on average 1.4705595711849264) internal successors, (144856), 98504 states have internal predecessors, (144856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98505 states to 98505 states and 144856 transitions. [2024-11-24 00:24:59,648 INFO L78 Accepts]: Start accepts. Automaton has 98505 states and 144856 transitions. Word has length 404 [2024-11-24 00:24:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:24:59,649 INFO L471 AbstractCegarLoop]: Abstraction has 98505 states and 144856 transitions. [2024-11-24 00:24:59,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 39.0) internal successors, (390), 10 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:24:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 98505 states and 144856 transitions. [2024-11-24 00:24:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-24 00:24:59,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:24:59,653 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:24:59,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-24 00:24:59,653 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:24:59,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:24:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash 903625950, now seen corresponding path program 1 times [2024-11-24 00:24:59,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:24:59,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21308239] [2024-11-24 00:24:59,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:59,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 00:25:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:25:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21308239] [2024-11-24 00:25:00,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21308239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:25:00,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:25:00,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:25:00,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302543872] [2024-11-24 00:25:00,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:25:00,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:25:00,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:25:00,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:25:00,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:25:00,850 INFO L87 Difference]: Start difference. First operand 98505 states and 144856 transitions. Second operand has 5 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:25:01,227 INFO L93 Difference]: Finished difference Result 196279 states and 288677 transitions. [2024-11-24 00:25:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:25:01,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 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 404 [2024-11-24 00:25:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:25:01,300 INFO L225 Difference]: With dead ends: 196279 [2024-11-24 00:25:01,300 INFO L226 Difference]: Without dead ends: 98485 [2024-11-24 00:25:01,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:25:01,349 INFO L435 NwaCegarLoop]: 551 mSDtfsCounter, 1222 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:25:01,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 1646 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:25:01,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98485 states. [2024-11-24 00:25:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98485 to 98485. [2024-11-24 00:25:02,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98485 states, 98484 states have (on average 1.4705332845944519) internal successors, (144824), 98484 states have internal predecessors, (144824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:02,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98485 states to 98485 states and 144824 transitions. [2024-11-24 00:25:02,388 INFO L78 Accepts]: Start accepts. Automaton has 98485 states and 144824 transitions. Word has length 404 [2024-11-24 00:25:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:25:02,388 INFO L471 AbstractCegarLoop]: Abstraction has 98485 states and 144824 transitions. [2024-11-24 00:25:02,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 98485 states and 144824 transitions. [2024-11-24 00:25:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-24 00:25:02,392 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:25:02,393 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:25:02,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-24 00:25:02,393 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:25:02,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:25:02,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1144865052, now seen corresponding path program 1 times [2024-11-24 00:25:02,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:25:02,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014033804] [2024-11-24 00:25:02,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:02,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-24 00:25:06,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:25:06,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014033804] [2024-11-24 00:25:06,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014033804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:25:06,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:25:06,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:25:06,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480137669] [2024-11-24 00:25:06,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:25:06,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:25:06,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:25:06,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:25:06,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:25:06,261 INFO L87 Difference]: Start difference. First operand 98485 states and 144824 transitions. Second operand has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:06,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:25:06,825 INFO L93 Difference]: Finished difference Result 201093 states and 295737 transitions. [2024-11-24 00:25:06,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:25:06,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 0 states have call successors, (0), 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 405 [2024-11-24 00:25:06,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:25:06,890 INFO L225 Difference]: With dead ends: 201093 [2024-11-24 00:25:06,890 INFO L226 Difference]: Without dead ends: 103109 [2024-11-24 00:25:06,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:25:06,918 INFO L435 NwaCegarLoop]: 557 mSDtfsCounter, 27 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:25:06,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3325 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:25:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103109 states. [2024-11-24 00:25:07,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103109 to 103109. [2024-11-24 00:25:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103109 states, 103108 states have (on average 1.4661907902393607) internal successors, (151176), 103108 states have internal predecessors, (151176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103109 states to 103109 states and 151176 transitions. [2024-11-24 00:25:07,932 INFO L78 Accepts]: Start accepts. Automaton has 103109 states and 151176 transitions. Word has length 405 [2024-11-24 00:25:07,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:25:07,933 INFO L471 AbstractCegarLoop]: Abstraction has 103109 states and 151176 transitions. [2024-11-24 00:25:07,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 103109 states and 151176 transitions. [2024-11-24 00:25:07,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-24 00:25:07,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:25:07,938 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:25:07,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-24 00:25:07,938 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:25:07,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:25:07,939 INFO L85 PathProgramCache]: Analyzing trace with hash -286730077, now seen corresponding path program 1 times [2024-11-24 00:25:07,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:25:07,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252305576] [2024-11-24 00:25:07,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:07,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-24 00:25:09,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:25:09,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252305576] [2024-11-24 00:25:09,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252305576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:25:09,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:25:09,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:25:09,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428604366] [2024-11-24 00:25:09,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:25:09,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:25:09,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:25:09,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:25:09,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:25:09,090 INFO L87 Difference]: Start difference. First operand 103109 states and 151176 transitions. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:09,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:25:09,828 INFO L93 Difference]: Finished difference Result 205923 states and 301971 transitions. [2024-11-24 00:25:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:25:09,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 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 405 [2024-11-24 00:25:09,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:25:09,907 INFO L225 Difference]: With dead ends: 205923 [2024-11-24 00:25:09,907 INFO L226 Difference]: Without dead ends: 103509 [2024-11-24 00:25:09,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:25:09,938 INFO L435 NwaCegarLoop]: 562 mSDtfsCounter, 0 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:25:09,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2232 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:25:09,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103509 states. [2024-11-24 00:25:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103509 to 103509. [2024-11-24 00:25:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103509 states, 103508 states have (on average 1.4643892259535496) internal successors, (151576), 103508 states have internal predecessors, (151576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103509 states to 103509 states and 151576 transitions. [2024-11-24 00:25:11,331 INFO L78 Accepts]: Start accepts. Automaton has 103509 states and 151576 transitions. Word has length 405 [2024-11-24 00:25:11,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:25:11,331 INFO L471 AbstractCegarLoop]: Abstraction has 103509 states and 151576 transitions. [2024-11-24 00:25:11,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:11,332 INFO L276 IsEmpty]: Start isEmpty. Operand 103509 states and 151576 transitions. [2024-11-24 00:25:11,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-24 00:25:11,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:25:11,336 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:25:11,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-24 00:25:11,337 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:25:11,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:25:11,337 INFO L85 PathProgramCache]: Analyzing trace with hash 208230366, now seen corresponding path program 1 times [2024-11-24 00:25:11,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:25:11,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840063403] [2024-11-24 00:25:11,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:11,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 00:25:12,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:25:12,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840063403] [2024-11-24 00:25:12,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840063403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:25:12,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:25:12,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:25:12,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154061175] [2024-11-24 00:25:12,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:25:12,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:25:12,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:25:12,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:25:12,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:25:12,497 INFO L87 Difference]: Start difference. First operand 103509 states and 151576 transitions. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:12,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:25:12,881 INFO L93 Difference]: Finished difference Result 206805 states and 302885 transitions. [2024-11-24 00:25:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:25:12,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 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 406 [2024-11-24 00:25:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:25:12,970 INFO L225 Difference]: With dead ends: 206805 [2024-11-24 00:25:12,970 INFO L226 Difference]: Without dead ends: 103909 [2024-11-24 00:25:13,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:25:13,024 INFO L435 NwaCegarLoop]: 562 mSDtfsCounter, 0 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:25:13,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1676 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:25:13,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103909 states. [2024-11-24 00:25:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103909 to 103909. [2024-11-24 00:25:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103909 states, 103908 states have (on average 1.4626015321245718) internal successors, (151976), 103908 states have internal predecessors, (151976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103909 states to 103909 states and 151976 transitions. [2024-11-24 00:25:14,639 INFO L78 Accepts]: Start accepts. Automaton has 103909 states and 151976 transitions. Word has length 406 [2024-11-24 00:25:14,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:25:14,639 INFO L471 AbstractCegarLoop]: Abstraction has 103909 states and 151976 transitions. [2024-11-24 00:25:14,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:14,640 INFO L276 IsEmpty]: Start isEmpty. Operand 103909 states and 151976 transitions. [2024-11-24 00:25:14,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-24 00:25:14,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:25:14,644 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:25:14,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-24 00:25:14,644 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:25:14,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:25:14,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1733150355, now seen corresponding path program 1 times [2024-11-24 00:25:14,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:25:14,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696954040] [2024-11-24 00:25:14,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:14,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-24 00:25:18,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:25:18,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696954040] [2024-11-24 00:25:18,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696954040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:25:18,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:25:18,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:25:18,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284535967] [2024-11-24 00:25:18,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:25:18,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:25:18,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:25:18,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:25:18,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:25:18,333 INFO L87 Difference]: Start difference. First operand 103909 states and 151976 transitions. Second operand has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:25:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:25:18,762 INFO L93 Difference]: Finished difference Result 216323 states and 316721 transitions. [2024-11-24 00:25:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:25:18,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 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 406 [2024-11-24 00:25:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted.