./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label30.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label30.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e208708a27329bc1b7bf267e92e92da86b44f6d40f860b2d7ec34e4892651a8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:30:21,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:30:21,184 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:30:21,193 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:30:21,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:30:21,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:30:21,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:30:21,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:30:21,233 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:30:21,233 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:30:21,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:30:21,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:30:21,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:30:21,235 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:30:21,235 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:30:21,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:30:21,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:30:21,236 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:30:21,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:30:21,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:30:21,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:30:21,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:30:21,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:30:21,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:30:21,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:30:21,237 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:30:21,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:30:21,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:30:21,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:30:21,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:30:21,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:30:21,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:30:21,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:30:21,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:30:21,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:30:21,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:30:21,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:30:21,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:30:21,239 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:30:21,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:30:21,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:30:21,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:30:21,239 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_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e208708a27329bc1b7bf267e92e92da86b44f6d40f860b2d7ec34e4892651a8 [2024-11-13 13:30:21,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:30:21,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:30:21,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:30:21,603 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:30:21,603 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:30:21,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem12_label30.c Unable to find full path for "g++" [2024-11-13 13:30:23,627 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:30:24,203 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:30:24,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/sv-benchmarks/c/eca-rers2012/Problem12_label30.c [2024-11-13 13:30:24,246 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/data/a6c1621dc/7652c226c3d945259f1b992a2c92de89/FLAGbd47ddd0f [2024-11-13 13:30:24,274 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/data/a6c1621dc/7652c226c3d945259f1b992a2c92de89 [2024-11-13 13:30:24,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:30:24,280 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:30:24,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:30:24,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:30:24,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:30:24,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:24" (1/1) ... [2024-11-13 13:30:24,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6382aab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:24, skipping insertion in model container [2024-11-13 13:30:24,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:24" (1/1) ... [2024-11-13 13:30:24,437 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:30:24,775 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_60f3cf9d-a01c-44f9-8419-affb1ace483f/sv-benchmarks/c/eca-rers2012/Problem12_label30.c[3429,3442] [2024-11-13 13:30:25,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:30:25,820 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:30:25,847 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_60f3cf9d-a01c-44f9-8419-affb1ace483f/sv-benchmarks/c/eca-rers2012/Problem12_label30.c[3429,3442] [2024-11-13 13:30:26,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:30:26,438 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:30:26,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26 WrapperNode [2024-11-13 13:30:26,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:30:26,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:30:26,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:30:26,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:30:26,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:26,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:26,879 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-13 13:30:26,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:30:26,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:30:26,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:30:26,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:30:26,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:26,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:26,940 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:27,237 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]. [2024-11-13 13:30:27,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:27,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:27,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:27,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:27,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:27,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:27,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:30:27,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:30:27,536 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:30:27,536 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:30:27,537 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (1/1) ... [2024-11-13 13:30:27,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:30:27,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:27,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:30:27,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:30:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:30:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:30:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:30:27,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:30:27,735 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:30:27,737 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:30:34,369 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-13 13:30:34,369 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:30:34,417 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:30:34,421 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:30:34,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:34 BoogieIcfgContainer [2024-11-13 13:30:34,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:30:34,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:30:34,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:30:34,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:30:34,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:30:24" (1/3) ... [2024-11-13 13:30:34,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2970cd31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:34, skipping insertion in model container [2024-11-13 13:30:34,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:26" (2/3) ... [2024-11-13 13:30:34,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2970cd31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:34, skipping insertion in model container [2024-11-13 13:30:34,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:34" (3/3) ... [2024-11-13 13:30:34,438 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label30.c [2024-11-13 13:30:34,457 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:30:34,459 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem12_label30.c that has 1 procedures, 818 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:30:34,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:30:34,574 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;@6517b8d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:30:34,574 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:30:34,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 13:30:34,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:34,593 INFO L215 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] [2024-11-13 13:30:34,594 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:30:34,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1067846424, now seen corresponding path program 1 times [2024-11-13 13:30:34,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:34,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393222422] [2024-11-13 13:30:34,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:34,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:35,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:35,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393222422] [2024-11-13 13:30:35,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393222422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:35,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:35,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:30:35,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631344996] [2024-11-13 13:30:35,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:35,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:30:35,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:30:35,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:30:35,073 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:41,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:41,044 INFO L93 Difference]: Finished difference Result 2404 states and 4645 transitions. [2024-11-13 13:30:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:30:41,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-11-13 13:30:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:41,070 INFO L225 Difference]: With dead ends: 2404 [2024-11-13 13:30:41,071 INFO L226 Difference]: Without dead ends: 1506 [2024-11-13 13:30:41,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:30:41,080 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 795 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:41,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 525 Invalid, 3033 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-13 13:30:41,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-13 13:30:41,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-13 13:30:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6066445182724252) internal successors, (2418), 1505 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:41,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2418 transitions. [2024-11-13 13:30:41,253 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2418 transitions. Word has length 25 [2024-11-13 13:30:41,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:41,254 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2418 transitions. [2024-11-13 13:30:41,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2418 transitions. [2024-11-13 13:30:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 13:30:41,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:41,260 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:30:41,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:30:41,262 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:30:41,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1672062507, now seen corresponding path program 1 times [2024-11-13 13:30:41,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:41,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51374292] [2024-11-13 13:30:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:41,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:41,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:41,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51374292] [2024-11-13 13:30:41,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51374292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:41,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:41,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:30:41,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592651426] [2024-11-13 13:30:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:41,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:30:41,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:41,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:30:41,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:30:41,623 INFO L87 Difference]: Start difference. First operand 1506 states and 2418 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:46,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:46,095 INFO L93 Difference]: Finished difference Result 4512 states and 7249 transitions. [2024-11-13 13:30:46,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:30:46,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2024-11-13 13:30:46,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:46,110 INFO L225 Difference]: With dead ends: 4512 [2024-11-13 13:30:46,110 INFO L226 Difference]: Without dead ends: 3008 [2024-11-13 13:30:46,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:30:46,119 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 774 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:46,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 449 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-13 13:30:46,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2024-11-13 13:30:46,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2024-11-13 13:30:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.4156967076820752) internal successors, (4257), 3007 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4257 transitions. [2024-11-13 13:30:46,215 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4257 transitions. Word has length 100 [2024-11-13 13:30:46,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:46,217 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4257 transitions. [2024-11-13 13:30:46,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:46,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4257 transitions. [2024-11-13 13:30:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-13 13:30:46,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:46,224 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 13:30:46,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:30:46,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:30:46,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:46,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1165860006, now seen corresponding path program 1 times [2024-11-13 13:30:46,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:46,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149945634] [2024-11-13 13:30:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:46,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:46,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149945634] [2024-11-13 13:30:46,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149945634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:46,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:46,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:30:46,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437736590] [2024-11-13 13:30:46,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:46,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:30:46,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:46,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:30:46,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:46,948 INFO L87 Difference]: Start difference. First operand 3008 states and 4257 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:54,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:54,375 INFO L93 Difference]: Finished difference Result 9769 states and 13601 transitions. [2024-11-13 13:30:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:30:54,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2024-11-13 13:30:54,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:54,412 INFO L225 Difference]: With dead ends: 9769 [2024-11-13 13:30:54,412 INFO L226 Difference]: Without dead ends: 6763 [2024-11-13 13:30:54,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:30:54,419 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 2182 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 5459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:54,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 164 Invalid, 5459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-13 13:30:54,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2024-11-13 13:30:54,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2024-11-13 13:30:54,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.3510795622596865) internal successors, (9136), 6762 states have internal predecessors, (9136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9136 transitions. [2024-11-13 13:30:54,652 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9136 transitions. Word has length 102 [2024-11-13 13:30:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:54,652 INFO L471 AbstractCegarLoop]: Abstraction has 6763 states and 9136 transitions. [2024-11-13 13:30:54,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9136 transitions. [2024-11-13 13:30:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-13 13:30:54,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:54,658 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:54,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:30:54,658 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:30:54,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1864029178, now seen corresponding path program 1 times [2024-11-13 13:30:54,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:54,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010029059] [2024-11-13 13:30:54,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:54,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:55,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:55,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010029059] [2024-11-13 13:30:55,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010029059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:55,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495320253] [2024-11-13 13:30:55,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:55,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:55,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:55,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:55,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:30:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:55,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:30:55,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:30:55,999 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:30:55,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495320253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:55,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:30:55,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-13 13:30:56,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258413281] [2024-11-13 13:30:56,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:56,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:30:56,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:56,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:30:56,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:30:56,004 INFO L87 Difference]: Start difference. First operand 6763 states and 9136 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:00,252 INFO L93 Difference]: Finished difference Result 15777 states and 21149 transitions. [2024-11-13 13:31:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:31:00,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 166 [2024-11-13 13:31:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:00,284 INFO L225 Difference]: With dead ends: 15777 [2024-11-13 13:31:00,284 INFO L226 Difference]: Without dead ends: 9767 [2024-11-13 13:31:00,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:31:00,293 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 716 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:00,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 156 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 13:31:00,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2024-11-13 13:31:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2024-11-13 13:31:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.255785377841491) internal successors, (12264), 9766 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12264 transitions. [2024-11-13 13:31:00,521 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12264 transitions. Word has length 166 [2024-11-13 13:31:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:00,523 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 12264 transitions. [2024-11-13 13:31:00,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12264 transitions. [2024-11-13 13:31:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-13 13:31:00,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:00,528 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:00,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:31:00,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:00,732 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:00,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash -169099641, now seen corresponding path program 1 times [2024-11-13 13:31:00,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:00,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533300438] [2024-11-13 13:31:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:00,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:01,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:01,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533300438] [2024-11-13 13:31:01,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533300438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:01,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:01,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:31:01,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841132111] [2024-11-13 13:31:01,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:01,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:31:01,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:01,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:31:01,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:31:01,266 INFO L87 Difference]: Start difference. First operand 9767 states and 12264 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:06,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:06,149 INFO L93 Difference]: Finished difference Result 21822 states and 27290 transitions. [2024-11-13 13:31:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:31:06,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-11-13 13:31:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:06,201 INFO L225 Difference]: With dead ends: 21822 [2024-11-13 13:31:06,201 INFO L226 Difference]: Without dead ends: 12771 [2024-11-13 13:31:06,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:31:06,213 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 702 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:06,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 612 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-13 13:31:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2024-11-13 13:31:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 12020. [2024-11-13 13:31:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.2085032032615026) internal successors, (14525), 12019 states have internal predecessors, (14525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14525 transitions. [2024-11-13 13:31:06,499 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14525 transitions. Word has length 173 [2024-11-13 13:31:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:06,499 INFO L471 AbstractCegarLoop]: Abstraction has 12020 states and 14525 transitions. [2024-11-13 13:31:06,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:06,500 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14525 transitions. [2024-11-13 13:31:06,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-13 13:31:06,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:06,504 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:06,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:31:06,504 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:06,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:06,508 INFO L85 PathProgramCache]: Analyzing trace with hash -422836311, now seen corresponding path program 1 times [2024-11-13 13:31:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:06,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610370834] [2024-11-13 13:31:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 13:31:06,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:06,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610370834] [2024-11-13 13:31:06,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610370834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:06,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:06,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:31:06,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194385370] [2024-11-13 13:31:06,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:06,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:31:06,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:06,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:31:06,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:06,842 INFO L87 Difference]: Start difference. First operand 12020 states and 14525 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:11,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:11,615 INFO L93 Difference]: Finished difference Result 27793 states and 34552 transitions. [2024-11-13 13:31:11,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:31:11,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 237 [2024-11-13 13:31:11,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:11,670 INFO L225 Difference]: With dead ends: 27793 [2024-11-13 13:31:11,670 INFO L226 Difference]: Without dead ends: 16526 [2024-11-13 13:31:11,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:11,683 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 761 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:11,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 495 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 13:31:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2024-11-13 13:31:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 12020. [2024-11-13 13:31:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.2085032032615026) internal successors, (14525), 12019 states have internal predecessors, (14525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14525 transitions. [2024-11-13 13:31:11,909 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14525 transitions. Word has length 237 [2024-11-13 13:31:11,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:11,910 INFO L471 AbstractCegarLoop]: Abstraction has 12020 states and 14525 transitions. [2024-11-13 13:31:11,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:11,911 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14525 transitions. [2024-11-13 13:31:11,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-13 13:31:11,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:11,917 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:11,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:31:11,918 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:11,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash -115722575, now seen corresponding path program 1 times [2024-11-13 13:31:11,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:11,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439663658] [2024-11-13 13:31:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:11,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-13 13:31:12,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:12,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439663658] [2024-11-13 13:31:12,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439663658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:12,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:12,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:31:12,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848599319] [2024-11-13 13:31:12,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:12,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:31:12,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:12,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:31:12,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:12,259 INFO L87 Difference]: Start difference. First operand 12020 states and 14525 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:17,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:17,208 INFO L93 Difference]: Finished difference Result 31550 states and 38845 transitions. [2024-11-13 13:31:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:31:17,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 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 238 [2024-11-13 13:31:17,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:17,268 INFO L225 Difference]: With dead ends: 31550 [2024-11-13 13:31:17,268 INFO L226 Difference]: Without dead ends: 20283 [2024-11-13 13:31:17,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:17,282 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:17,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 312 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-13 13:31:17,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20283 states. [2024-11-13 13:31:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20283 to 18779. [2024-11-13 13:31:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.1888380019171372) internal successors, (22324), 18778 states have internal predecessors, (22324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:17,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 22324 transitions. [2024-11-13 13:31:17,689 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 22324 transitions. Word has length 238 [2024-11-13 13:31:17,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:17,689 INFO L471 AbstractCegarLoop]: Abstraction has 18779 states and 22324 transitions. [2024-11-13 13:31:17,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:17,690 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 22324 transitions. [2024-11-13 13:31:17,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-13 13:31:17,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:17,703 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:17,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:31:17,703 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:17,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:17,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1329647004, now seen corresponding path program 1 times [2024-11-13 13:31:17,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:17,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567207723] [2024-11-13 13:31:17,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:17,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 13:31:18,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:18,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567207723] [2024-11-13 13:31:18,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567207723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:18,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:18,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:31:18,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404183504] [2024-11-13 13:31:18,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:18,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:31:18,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:31:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:18,075 INFO L87 Difference]: Start difference. First operand 18779 states and 22324 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:22,709 INFO L93 Difference]: Finished difference Result 43564 states and 53013 transitions. [2024-11-13 13:31:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:31:22,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 324 [2024-11-13 13:31:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:22,759 INFO L225 Difference]: With dead ends: 43564 [2024-11-13 13:31:22,759 INFO L226 Difference]: Without dead ends: 25538 [2024-11-13 13:31:22,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:22,773 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 792 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:22,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 238 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-13 13:31:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2024-11-13 13:31:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 24787. [2024-11-13 13:31:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24787 states, 24786 states have (on average 1.1906721536351166) internal successors, (29512), 24786 states have internal predecessors, (29512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24787 states to 24787 states and 29512 transitions. [2024-11-13 13:31:23,153 INFO L78 Accepts]: Start accepts. Automaton has 24787 states and 29512 transitions. Word has length 324 [2024-11-13 13:31:23,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:23,154 INFO L471 AbstractCegarLoop]: Abstraction has 24787 states and 29512 transitions. [2024-11-13 13:31:23,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:23,155 INFO L276 IsEmpty]: Start isEmpty. Operand 24787 states and 29512 transitions. [2024-11-13 13:31:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-13 13:31:23,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:23,164 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:23,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:31:23,164 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:23,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:23,165 INFO L85 PathProgramCache]: Analyzing trace with hash 810649794, now seen corresponding path program 1 times [2024-11-13 13:31:23,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:23,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235832132] [2024-11-13 13:31:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:23,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 13:31:23,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:23,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235832132] [2024-11-13 13:31:23,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235832132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:23,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:23,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:31:23,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127046483] [2024-11-13 13:31:23,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:23,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:31:23,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:23,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:31:23,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:23,670 INFO L87 Difference]: Start difference. First operand 24787 states and 29512 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:28,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:28,635 INFO L93 Difference]: Finished difference Result 62339 states and 74047 transitions. [2024-11-13 13:31:28,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:31:28,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 352 [2024-11-13 13:31:28,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:28,690 INFO L225 Difference]: With dead ends: 62339 [2024-11-13 13:31:28,690 INFO L226 Difference]: Without dead ends: 38305 [2024-11-13 13:31:28,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:28,709 INFO L432 NwaCegarLoop]: 1239 mSDtfsCounter, 635 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:28,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1247 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 13:31:28,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38305 states. [2024-11-13 13:31:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38305 to 36052. [2024-11-13 13:31:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36052 states, 36051 states have (on average 1.178940944772683) internal successors, (42502), 36051 states have internal predecessors, (42502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36052 states to 36052 states and 42502 transitions. [2024-11-13 13:31:29,262 INFO L78 Accepts]: Start accepts. Automaton has 36052 states and 42502 transitions. Word has length 352 [2024-11-13 13:31:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:29,263 INFO L471 AbstractCegarLoop]: Abstraction has 36052 states and 42502 transitions. [2024-11-13 13:31:29,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 36052 states and 42502 transitions. [2024-11-13 13:31:29,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-13 13:31:29,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:29,269 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:29,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:31:29,270 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:29,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:29,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2102662988, now seen corresponding path program 1 times [2024-11-13 13:31:29,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:29,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113955088] [2024-11-13 13:31:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:29,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 13:31:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:29,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113955088] [2024-11-13 13:31:29,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113955088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:29,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:29,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:31:29,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890057376] [2024-11-13 13:31:29,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:29,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:31:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:29,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:31:29,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:29,685 INFO L87 Difference]: Start difference. First operand 36052 states and 42502 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:34,832 INFO L93 Difference]: Finished difference Result 104395 states and 123608 transitions. [2024-11-13 13:31:34,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:31:34,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 356 [2024-11-13 13:31:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:34,906 INFO L225 Difference]: With dead ends: 104395 [2024-11-13 13:31:34,907 INFO L226 Difference]: Without dead ends: 64590 [2024-11-13 13:31:34,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:34,942 INFO L432 NwaCegarLoop]: 1307 mSDtfsCounter, 768 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:34,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1315 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-13 13:31:35,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64590 states. [2024-11-13 13:31:35,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64590 to 54076. [2024-11-13 13:31:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54076 states, 54075 states have (on average 1.1409893666204345) internal successors, (61699), 54075 states have internal predecessors, (61699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54076 states to 54076 states and 61699 transitions. [2024-11-13 13:31:36,085 INFO L78 Accepts]: Start accepts. Automaton has 54076 states and 61699 transitions. Word has length 356 [2024-11-13 13:31:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:36,086 INFO L471 AbstractCegarLoop]: Abstraction has 54076 states and 61699 transitions. [2024-11-13 13:31:36,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 54076 states and 61699 transitions. [2024-11-13 13:31:36,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2024-11-13 13:31:36,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:36,096 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:36,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:31:36,097 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:36,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:36,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1342475437, now seen corresponding path program 1 times [2024-11-13 13:31:36,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:36,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192561906] [2024-11-13 13:31:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:36,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 13:31:36,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:36,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192561906] [2024-11-13 13:31:36,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192561906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:36,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:36,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:31:36,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580351481] [2024-11-13 13:31:36,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:36,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:31:36,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:36,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:31:36,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:36,574 INFO L87 Difference]: Start difference. First operand 54076 states and 61699 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:41,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:41,530 INFO L93 Difference]: Finished difference Result 136688 states and 157854 transitions. [2024-11-13 13:31:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:31:41,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 363 [2024-11-13 13:31:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:41,790 INFO L225 Difference]: With dead ends: 136688 [2024-11-13 13:31:41,790 INFO L226 Difference]: Without dead ends: 83365 [2024-11-13 13:31:41,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:41,818 INFO L432 NwaCegarLoop]: 1228 mSDtfsCounter, 720 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:41,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1236 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 13:31:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83365 states. [2024-11-13 13:31:42,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83365 to 77357. [2024-11-13 13:31:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77357 states, 77356 states have (on average 1.1244247375769172) internal successors, (86981), 77356 states have internal predecessors, (86981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:42,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77357 states to 77357 states and 86981 transitions. [2024-11-13 13:31:42,745 INFO L78 Accepts]: Start accepts. Automaton has 77357 states and 86981 transitions. Word has length 363 [2024-11-13 13:31:42,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:42,746 INFO L471 AbstractCegarLoop]: Abstraction has 77357 states and 86981 transitions. [2024-11-13 13:31:42,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 77357 states and 86981 transitions. [2024-11-13 13:31:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-13 13:31:42,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:42,757 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:42,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:31:42,758 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:42,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1242628176, now seen corresponding path program 1 times [2024-11-13 13:31:42,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:42,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500503221] [2024-11-13 13:31:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-13 13:31:43,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:43,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500503221] [2024-11-13 13:31:43,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500503221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:43,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:43,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:31:43,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554556234] [2024-11-13 13:31:43,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:43,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:31:43,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:43,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:31:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:43,551 INFO L87 Difference]: Start difference. First operand 77357 states and 86981 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:47,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:47,951 INFO L93 Difference]: Finished difference Result 188507 states and 213665 transitions. [2024-11-13 13:31:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:31:47,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 460 [2024-11-13 13:31:47,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:48,123 INFO L225 Difference]: With dead ends: 188507 [2024-11-13 13:31:48,123 INFO L226 Difference]: Without dead ends: 111903 [2024-11-13 13:31:48,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:48,177 INFO L432 NwaCegarLoop]: 1288 mSDtfsCounter, 741 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:48,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1296 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-13 13:31:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111903 states. [2024-11-13 13:31:49,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111903 to 99887. [2024-11-13 13:31:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99887 states, 99886 states have (on average 1.1136896061510122) internal successors, (111242), 99886 states have internal predecessors, (111242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99887 states to 99887 states and 111242 transitions. [2024-11-13 13:31:49,904 INFO L78 Accepts]: Start accepts. Automaton has 99887 states and 111242 transitions. Word has length 460 [2024-11-13 13:31:49,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:49,905 INFO L471 AbstractCegarLoop]: Abstraction has 99887 states and 111242 transitions. [2024-11-13 13:31:49,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:49,905 INFO L276 IsEmpty]: Start isEmpty. Operand 99887 states and 111242 transitions. [2024-11-13 13:31:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2024-11-13 13:31:49,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:49,952 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 13:31:49,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:31:49,953 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:49,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:49,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1768880823, now seen corresponding path program 1 times [2024-11-13 13:31:49,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:49,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890188983] [2024-11-13 13:31:49,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:49,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-11-13 13:31:50,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890188983] [2024-11-13 13:31:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890188983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:50,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:50,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:31:50,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753976646] [2024-11-13 13:31:50,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:50,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:31:50,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:50,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:31:50,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:50,890 INFO L87 Difference]: Start difference. First operand 99887 states and 111242 transitions. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:55,379 INFO L93 Difference]: Finished difference Result 223804 states and 251654 transitions. [2024-11-13 13:31:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:31:55,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 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 735 [2024-11-13 13:31:55,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:55,559 INFO L225 Difference]: With dead ends: 223804 [2024-11-13 13:31:55,559 INFO L226 Difference]: Without dead ends: 124670 [2024-11-13 13:31:55,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:55,604 INFO L432 NwaCegarLoop]: 1389 mSDtfsCounter, 649 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:55,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1397 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-13 13:31:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124670 states. [2024-11-13 13:31:56,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124670 to 118662. [2024-11-13 13:31:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118662 states, 118661 states have (on average 1.1008840309790073) internal successors, (130632), 118661 states have internal predecessors, (130632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:57,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118662 states to 118662 states and 130632 transitions. [2024-11-13 13:31:57,362 INFO L78 Accepts]: Start accepts. Automaton has 118662 states and 130632 transitions. Word has length 735 [2024-11-13 13:31:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:57,366 INFO L471 AbstractCegarLoop]: Abstraction has 118662 states and 130632 transitions. [2024-11-13 13:31:57,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:57,366 INFO L276 IsEmpty]: Start isEmpty. Operand 118662 states and 130632 transitions. [2024-11-13 13:31:57,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2024-11-13 13:31:57,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:57,411 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:57,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:31:57,411 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:57,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:57,411 INFO L85 PathProgramCache]: Analyzing trace with hash -711255679, now seen corresponding path program 1 times [2024-11-13 13:31:57,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:57,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599202811] [2024-11-13 13:31:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:57,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 640 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-13 13:31:58,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:58,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599202811] [2024-11-13 13:31:58,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599202811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:58,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:58,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:31:58,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301699327] [2024-11-13 13:31:58,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:58,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:31:58,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:58,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:31:58,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:31:58,361 INFO L87 Difference]: Start difference. First operand 118662 states and 130632 transitions. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:03,561 INFO L93 Difference]: Finished difference Result 236571 states and 260506 transitions. [2024-11-13 13:32:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 754 [2024-11-13 13:32:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:03,691 INFO L225 Difference]: With dead ends: 236571 [2024-11-13 13:32:03,691 INFO L226 Difference]: Without dead ends: 118662 [2024-11-13 13:32:03,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:03,737 INFO L432 NwaCegarLoop]: 1262 mSDtfsCounter, 405 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:03,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1270 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 13:32:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118662 states. [2024-11-13 13:32:05,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118662 to 116409. [2024-11-13 13:32:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116409 states, 116408 states have (on average 1.0679248848876366) internal successors, (124315), 116408 states have internal predecessors, (124315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116409 states to 116409 states and 124315 transitions. [2024-11-13 13:32:05,496 INFO L78 Accepts]: Start accepts. Automaton has 116409 states and 124315 transitions. Word has length 754 [2024-11-13 13:32:05,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:05,496 INFO L471 AbstractCegarLoop]: Abstraction has 116409 states and 124315 transitions. [2024-11-13 13:32:05,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:05,497 INFO L276 IsEmpty]: Start isEmpty. Operand 116409 states and 124315 transitions. [2024-11-13 13:32:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2024-11-13 13:32:05,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:05,522 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:05,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:32:05,522 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:05,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:05,523 INFO L85 PathProgramCache]: Analyzing trace with hash -116437726, now seen corresponding path program 1 times [2024-11-13 13:32:05,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:05,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791902549] [2024-11-13 13:32:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 655 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-13 13:32:06,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:06,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791902549] [2024-11-13 13:32:06,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791902549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:06,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:06,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:06,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770549589] [2024-11-13 13:32:06,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:06,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:06,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:06,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:06,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:06,551 INFO L87 Difference]: Start difference. First operand 116409 states and 124315 transitions. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:12,244 INFO L93 Difference]: Finished difference Result 249338 states and 265639 transitions. [2024-11-13 13:32:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:12,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 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 769 [2024-11-13 13:32:12,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:12,416 INFO L225 Difference]: With dead ends: 249338 [2024-11-13 13:32:12,416 INFO L226 Difference]: Without dead ends: 133682 [2024-11-13 13:32:12,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:12,474 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 449 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:12,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 193 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-13 13:32:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133682 states. [2024-11-13 13:32:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133682 to 117160. [2024-11-13 13:32:14,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117160 states, 117159 states have (on average 1.0643996619977978) internal successors, (124704), 117159 states have internal predecessors, (124704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117160 states to 117160 states and 124704 transitions. [2024-11-13 13:32:14,348 INFO L78 Accepts]: Start accepts. Automaton has 117160 states and 124704 transitions. Word has length 769 [2024-11-13 13:32:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:14,349 INFO L471 AbstractCegarLoop]: Abstraction has 117160 states and 124704 transitions. [2024-11-13 13:32:14,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 117160 states and 124704 transitions. [2024-11-13 13:32:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2024-11-13 13:32:14,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:14,386 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:14,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 13:32:14,387 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:14,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1560643802, now seen corresponding path program 1 times [2024-11-13 13:32:14,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:14,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971763414] [2024-11-13 13:32:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:14,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 445 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:18,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:18,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971763414] [2024-11-13 13:32:18,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971763414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:18,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:18,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:32:18,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861222529] [2024-11-13 13:32:18,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:18,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:32:18,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:18,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:32:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:32:18,323 INFO L87 Difference]: Start difference. First operand 117160 states and 124704 transitions. Second operand has 8 states, 8 states have (on average 96.125) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:30,139 INFO L93 Difference]: Finished difference Result 248589 states and 264211 transitions. [2024-11-13 13:32:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:32:30,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 96.125) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 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 769 [2024-11-13 13:32:30,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:30,271 INFO L225 Difference]: With dead ends: 248589 [2024-11-13 13:32:30,272 INFO L226 Difference]: Without dead ends: 132182 [2024-11-13 13:32:30,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:32:30,315 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 2900 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 10004 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2900 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 10449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 10004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:30,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2900 Valid, 648 Invalid, 10449 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [445 Valid, 10004 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-11-13 13:32:30,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132182 states. [2024-11-13 13:32:31,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132182 to 119413. [2024-11-13 13:32:31,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119413 states, 119412 states have (on average 1.0636368204200584) internal successors, (127011), 119412 states have internal predecessors, (127011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119413 states to 119413 states and 127011 transitions. [2024-11-13 13:32:32,307 INFO L78 Accepts]: Start accepts. Automaton has 119413 states and 127011 transitions. Word has length 769 [2024-11-13 13:32:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:32,308 INFO L471 AbstractCegarLoop]: Abstraction has 119413 states and 127011 transitions. [2024-11-13 13:32:32,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.125) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 119413 states and 127011 transitions. [2024-11-13 13:32:32,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2024-11-13 13:32:32,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:32,368 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:32,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 13:32:32,369 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:32,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:32,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1445851897, now seen corresponding path program 1 times [2024-11-13 13:32:32,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:32,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677252423] [2024-11-13 13:32:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:32,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 415 proven. 54 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 13:32:34,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677252423] [2024-11-13 13:32:34,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677252423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824518568] [2024-11-13 13:32:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:34,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:34,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:34,741 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:34,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:32:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:35,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:32:35,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-11-13 13:32:37,097 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:32:37,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824518568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:37,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:32:37,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 13:32:37,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339527106] [2024-11-13 13:32:37,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:37,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:32:37,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:37,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:32:37,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:32:37,105 INFO L87 Difference]: Start difference. First operand 119413 states and 127011 transitions. Second operand has 4 states, 4 states have (on average 127.5) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:45,866 INFO L93 Difference]: Finished difference Result 361990 states and 386472 transitions. [2024-11-13 13:32:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:32:45,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 127.5) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 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 792 [2024-11-13 13:32:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:46,499 INFO L225 Difference]: With dead ends: 361990 [2024-11-13 13:32:46,499 INFO L226 Difference]: Without dead ends: 243330 [2024-11-13 13:32:46,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 790 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:32:46,573 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 1477 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4826 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 5335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 4826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:46,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 66 Invalid, 5335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 4826 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-13 13:32:46,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243330 states. [2024-11-13 13:32:50,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243330 to 242577. [2024-11-13 13:32:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242577 states, 242576 states have (on average 1.0654763867818746) internal successors, (258459), 242576 states have internal predecessors, (258459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242577 states to 242577 states and 258459 transitions. [2024-11-13 13:32:50,918 INFO L78 Accepts]: Start accepts. Automaton has 242577 states and 258459 transitions. Word has length 792 [2024-11-13 13:32:50,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:50,919 INFO L471 AbstractCegarLoop]: Abstraction has 242577 states and 258459 transitions. [2024-11-13 13:32:50,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.5) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:50,919 INFO L276 IsEmpty]: Start isEmpty. Operand 242577 states and 258459 transitions. [2024-11-13 13:32:51,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2024-11-13 13:32:51,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:51,025 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:51,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:32:51,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f3cf9d-a01c-44f9-8419-affb1ace483f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:32:51,227 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:51,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash -327661676, now seen corresponding path program 1 times [2024-11-13 13:32:51,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:51,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262220108] [2024-11-13 13:32:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:51,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2024-11-13 13:32:52,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:52,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262220108] [2024-11-13 13:32:52,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262220108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:52,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:52,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734929748] [2024-11-13 13:32:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:52,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:52,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:52,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:52,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:52,629 INFO L87 Difference]: Start difference. First operand 242577 states and 258459 transitions. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:58,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:58,758 INFO L93 Difference]: Finished difference Result 536971 states and 570727 transitions. [2024-11-13 13:32:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:58,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 877 [2024-11-13 13:32:58,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:59,557 INFO L225 Difference]: With dead ends: 536971 [2024-11-13 13:32:59,558 INFO L226 Difference]: Without dead ends: 295147 [2024-11-13 13:32:59,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:59,650 INFO L432 NwaCegarLoop]: 1175 mSDtfsCounter, 678 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:59,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1183 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 13:32:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295147 states. [2024-11-13 13:33:03,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295147 to 261352. [2024-11-13 13:33:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261352 states, 261351 states have (on average 1.059701321211704) internal successors, (276954), 261351 states have internal predecessors, (276954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:03,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261352 states to 261352 states and 276954 transitions. [2024-11-13 13:33:03,838 INFO L78 Accepts]: Start accepts. Automaton has 261352 states and 276954 transitions. Word has length 877 [2024-11-13 13:33:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:03,840 INFO L471 AbstractCegarLoop]: Abstraction has 261352 states and 276954 transitions. [2024-11-13 13:33:03,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 261352 states and 276954 transitions. [2024-11-13 13:33:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1046 [2024-11-13 13:33:03,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:03,921 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:33:03,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 13:33:03,921 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:33:03,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:03,922 INFO L85 PathProgramCache]: Analyzing trace with hash 649070164, now seen corresponding path program 1 times [2024-11-13 13:33:03,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:03,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993727218] [2024-11-13 13:33:03,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:03,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 763 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-13 13:33:05,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:33:05,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993727218] [2024-11-13 13:33:05,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993727218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:33:05,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:33:05,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:33:05,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757524592] [2024-11-13 13:33:05,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:33:05,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:33:05,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:33:05,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:33:05,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:33:05,298 INFO L87 Difference]: Start difference. First operand 261352 states and 276954 transitions. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 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) [2024-11-13 13:33:11,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:11,634 INFO L93 Difference]: Finished difference Result 521951 states and 553150 transitions. [2024-11-13 13:33:11,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:33:11,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 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) Word has length 1045 [2024-11-13 13:33:11,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:11,939 INFO L225 Difference]: With dead ends: 521951 [2024-11-13 13:33:11,939 INFO L226 Difference]: Without dead ends: 261352 [2024-11-13 13:33:12,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:33:12,014 INFO L432 NwaCegarLoop]: 1207 mSDtfsCounter, 698 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2251 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 2251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:12,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1215 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 2251 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 13:33:12,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261352 states. [2024-11-13 13:33:15,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261352 to 257597. [2024-11-13 13:33:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257597 states, 257596 states have (on average 1.0533315734716377) internal successors, (271334), 257596 states have internal predecessors, (271334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257597 states to 257597 states and 271334 transitions. [2024-11-13 13:33:16,176 INFO L78 Accepts]: Start accepts. Automaton has 257597 states and 271334 transitions. Word has length 1045 [2024-11-13 13:33:16,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:16,177 INFO L471 AbstractCegarLoop]: Abstraction has 257597 states and 271334 transitions. [2024-11-13 13:33:16,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 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) [2024-11-13 13:33:16,177 INFO L276 IsEmpty]: Start isEmpty. Operand 257597 states and 271334 transitions. [2024-11-13 13:33:16,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2024-11-13 13:33:16,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:16,344 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:33:16,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:33:16,344 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:33:16,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:16,345 INFO L85 PathProgramCache]: Analyzing trace with hash -178068268, now seen corresponding path program 1 times [2024-11-13 13:33:16,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:16,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562524013] [2024-11-13 13:33:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:16,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-13 13:33:18,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:33:18,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562524013] [2024-11-13 13:33:18,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562524013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:33:18,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:33:18,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:33:18,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912152268] [2024-11-13 13:33:18,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:33:18,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:33:18,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:33:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:33:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:33:18,234 INFO L87 Difference]: Start difference. First operand 257597 states and 271334 transitions. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:25,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:25,065 INFO L93 Difference]: Finished difference Result 591043 states and 624010 transitions. [2024-11-13 13:33:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:33:25,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 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 1057 [2024-11-13 13:33:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:25,408 INFO L225 Difference]: With dead ends: 591043 [2024-11-13 13:33:25,408 INFO L226 Difference]: Without dead ends: 334199 [2024-11-13 13:33:25,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:33:25,458 INFO L432 NwaCegarLoop]: 1131 mSDtfsCounter, 280 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:25,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1138 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-13 13:33:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334199 states.