./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 454b29c5fe5071d16700d38fede778ad07010669479cf8e19070acab5fe681c9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:43:08,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:43:08,273 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:43:08,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:43:08,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:43:08,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:43:08,314 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:43:08,315 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:43:08,315 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:43:08,316 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:43:08,316 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:43:08,317 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:43:08,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:43:08,320 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:43:08,320 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:43:08,320 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:43:08,321 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:43:08,321 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:43:08,321 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:43:08,321 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:43:08,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:43:08,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:43:08,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:43:08,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:43:08,327 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:43:08,327 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:43:08,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:43:08,328 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:43:08,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:43:08,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:43:08,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:43:08,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:43:08,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:43:08,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:43:08,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:43:08,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:43:08,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:43:08,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:43:08,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:43:08,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:43:08,332 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:43:08,332 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:43:08,333 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 454b29c5fe5071d16700d38fede778ad07010669479cf8e19070acab5fe681c9 [2024-11-18 15:43:08,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:43:08,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:43:08,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:43:08,598 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:43:08,599 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:43:08,600 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c [2024-11-18 15:43:10,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:43:10,739 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:43:10,740 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c [2024-11-18 15:43:10,788 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec86ab87/7fd4fc701f3a453d9a41b7b63e5de8d5/FLAGd107266b0 [2024-11-18 15:43:10,804 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec86ab87/7fd4fc701f3a453d9a41b7b63e5de8d5 [2024-11-18 15:43:10,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:43:10,809 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:43:10,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:43:10,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:43:10,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:43:10,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:43:10" (1/1) ... [2024-11-18 15:43:10,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34429ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:10, skipping insertion in model container [2024-11-18 15:43:10,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:43:10" (1/1) ... [2024-11-18 15:43:10,993 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:43:12,723 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[380593,380606] [2024-11-18 15:43:12,754 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[383339,383352] [2024-11-18 15:43:12,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:43:12,937 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:43:13,811 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[380593,380606] [2024-11-18 15:43:13,818 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[383339,383352] [2024-11-18 15:43:13,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:43:13,895 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:43:13,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13 WrapperNode [2024-11-18 15:43:13,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:43:13,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:43:13,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:43:13,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:43:13,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:13,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:14,437 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12639 [2024-11-18 15:43:14,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:43:14,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:43:14,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:43:14,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:43:14,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:14,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:14,552 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:14,635 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]. [2024-11-18 15:43:14,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:14,635 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:14,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:14,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:15,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:15,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:15,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:43:15,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:43:15,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:43:15,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:43:15,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (1/1) ... [2024-11-18 15:43:15,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:43:15,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:15,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:43:15,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:43:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:43:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-18 15:43:15,359 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-18 15:43:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:43:15,359 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:43:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:43:15,360 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:43:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:43:15,360 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:43:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:43:15,361 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:43:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:43:15,361 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:43:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:43:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:43:15,361 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:43:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:43:15,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:43:15,474 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:43:15,477 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:43:22,750 INFO L? ?]: Removed 1699 outVars from TransFormulas that were not future-live. [2024-11-18 15:43:22,750 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:43:22,819 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:43:22,819 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-18 15:43:22,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:43:22 BoogieIcfgContainer [2024-11-18 15:43:22,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:43:22,823 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:43:22,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:43:22,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:43:22,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:43:10" (1/3) ... [2024-11-18 15:43:22,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e443b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:43:22, skipping insertion in model container [2024-11-18 15:43:22,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:13" (2/3) ... [2024-11-18 15:43:22,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e443b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:43:22, skipping insertion in model container [2024-11-18 15:43:22,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:43:22" (3/3) ... [2024-11-18 15:43:22,831 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.02.cil-2.c [2024-11-18 15:43:22,849 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:43:22,849 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:43:22,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:43:22,972 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;@11de8237, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:43:22,973 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:43:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 2326 states, 2298 states have (on average 1.8563968668407311) internal successors, (4266), 2303 states have internal predecessors, (4266), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-18 15:43:23,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:43:23,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:23,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:23,004 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:23,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:23,010 INFO L85 PathProgramCache]: Analyzing trace with hash 931332088, now seen corresponding path program 1 times [2024-11-18 15:43:23,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:23,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676251105] [2024-11-18 15:43:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:23,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:23,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:23,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676251105] [2024-11-18 15:43:23,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676251105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:23,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:23,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:43:23,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816216653] [2024-11-18 15:43:23,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:23,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:43:23,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:23,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:43:23,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:43:23,516 INFO L87 Difference]: Start difference. First operand has 2326 states, 2298 states have (on average 1.8563968668407311) internal successors, (4266), 2303 states have internal predecessors, (4266), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:24,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:24,076 INFO L93 Difference]: Finished difference Result 4779 states and 8807 transitions. [2024-11-18 15:43:24,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:43:24,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:43:24,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:24,109 INFO L225 Difference]: With dead ends: 4779 [2024-11-18 15:43:24,109 INFO L226 Difference]: Without dead ends: 2393 [2024-11-18 15:43:24,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:24,124 INFO L432 NwaCegarLoop]: 4184 mSDtfsCounter, 4343 mSDsluCounter, 8439 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 12623 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:24,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4353 Valid, 12623 Invalid, 267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:43:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2024-11-18 15:43:24,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2382. [2024-11-18 15:43:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2338 states have (on average 1.8319076133447392) internal successors, (4283), 2342 states have internal predecessors, (4283), 29 states have call successors, (29), 13 states have call predecessors, (29), 13 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2024-11-18 15:43:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4340 transitions. [2024-11-18 15:43:24,294 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4340 transitions. Word has length 69 [2024-11-18 15:43:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:24,295 INFO L471 AbstractCegarLoop]: Abstraction has 2382 states and 4340 transitions. [2024-11-18 15:43:24,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4340 transitions. [2024-11-18 15:43:24,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:43:24,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:24,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:24,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:43:24,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:24,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:24,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1034046452, now seen corresponding path program 1 times [2024-11-18 15:43:24,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:24,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790351278] [2024-11-18 15:43:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:24,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:24,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:24,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790351278] [2024-11-18 15:43:24,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790351278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:24,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:24,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:24,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645505908] [2024-11-18 15:43:24,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:24,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:24,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:24,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:24,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:24,548 INFO L87 Difference]: Start difference. First operand 2382 states and 4340 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:25,078 INFO L93 Difference]: Finished difference Result 2785 states and 4935 transitions. [2024-11-18 15:43:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:25,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:43:25,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:25,094 INFO L225 Difference]: With dead ends: 2785 [2024-11-18 15:43:25,094 INFO L226 Difference]: Without dead ends: 2534 [2024-11-18 15:43:25,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:43:25,098 INFO L432 NwaCegarLoop]: 4215 mSDtfsCounter, 4265 mSDsluCounter, 12613 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4275 SdHoareTripleChecker+Valid, 16828 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:25,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4275 Valid, 16828 Invalid, 461 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:43:25,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2024-11-18 15:43:25,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2499. [2024-11-18 15:43:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2437 states have (on average 1.816988100123102) internal successors, (4428), 2442 states have internal predecessors, (4428), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2024-11-18 15:43:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 4510 transitions. [2024-11-18 15:43:25,189 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 4510 transitions. Word has length 69 [2024-11-18 15:43:25,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:25,189 INFO L471 AbstractCegarLoop]: Abstraction has 2499 states and 4510 transitions. [2024-11-18 15:43:25,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:25,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 4510 transitions. [2024-11-18 15:43:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:43:25,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:25,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:25,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:43:25,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:25,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:25,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1874135434, now seen corresponding path program 1 times [2024-11-18 15:43:25,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:25,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124102030] [2024-11-18 15:43:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:25,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:25,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:25,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124102030] [2024-11-18 15:43:25,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124102030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:25,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:25,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:25,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29698704] [2024-11-18 15:43:25,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:25,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:25,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:25,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:25,362 INFO L87 Difference]: Start difference. First operand 2499 states and 4510 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:25,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:25,811 INFO L93 Difference]: Finished difference Result 3146 states and 5464 transitions. [2024-11-18 15:43:25,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:25,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:43:25,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:25,825 INFO L225 Difference]: With dead ends: 3146 [2024-11-18 15:43:25,826 INFO L226 Difference]: Without dead ends: 2778 [2024-11-18 15:43:25,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:43:25,830 INFO L432 NwaCegarLoop]: 4116 mSDtfsCounter, 4273 mSDsluCounter, 12387 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4283 SdHoareTripleChecker+Valid, 16503 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:25,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4283 Valid, 16503 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:43:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2024-11-18 15:43:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2742. [2024-11-18 15:43:25,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2742 states, 2642 states have (on average 1.7899318697956095) internal successors, (4729), 2651 states have internal predecessors, (4729), 62 states have call successors, (62), 31 states have call predecessors, (62), 36 states have return successors, (76), 63 states have call predecessors, (76), 60 states have call successors, (76) [2024-11-18 15:43:25,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 4867 transitions. [2024-11-18 15:43:25,933 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 4867 transitions. Word has length 69 [2024-11-18 15:43:25,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:25,933 INFO L471 AbstractCegarLoop]: Abstraction has 2742 states and 4867 transitions. [2024-11-18 15:43:25,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:25,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 4867 transitions. [2024-11-18 15:43:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:43:25,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:25,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:25,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:43:25,937 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:25,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:25,938 INFO L85 PathProgramCache]: Analyzing trace with hash -998116428, now seen corresponding path program 1 times [2024-11-18 15:43:25,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:25,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848243043] [2024-11-18 15:43:25,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:25,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:26,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:26,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848243043] [2024-11-18 15:43:26,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848243043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:26,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:26,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:26,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402064167] [2024-11-18 15:43:26,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:26,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:26,083 INFO L87 Difference]: Start difference. First operand 2742 states and 4867 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:26,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:26,713 INFO L93 Difference]: Finished difference Result 3927 states and 6620 transitions. [2024-11-18 15:43:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:43:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:26,733 INFO L225 Difference]: With dead ends: 3927 [2024-11-18 15:43:26,734 INFO L226 Difference]: Without dead ends: 3316 [2024-11-18 15:43:26,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:43:26,739 INFO L432 NwaCegarLoop]: 4201 mSDtfsCounter, 4264 mSDsluCounter, 12568 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4273 SdHoareTripleChecker+Valid, 16769 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:26,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4273 Valid, 16769 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:43:26,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2024-11-18 15:43:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 3188. [2024-11-18 15:43:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3188 states, 3010 states have (on average 1.7458471760797343) internal successors, (5255), 3033 states have internal predecessors, (5255), 102 states have call successors, (102), 55 states have call predecessors, (102), 74 states have return successors, (164), 107 states have call predecessors, (164), 100 states have call successors, (164) [2024-11-18 15:43:26,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 5521 transitions. [2024-11-18 15:43:26,867 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 5521 transitions. Word has length 69 [2024-11-18 15:43:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:26,868 INFO L471 AbstractCegarLoop]: Abstraction has 3188 states and 5521 transitions. [2024-11-18 15:43:26,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 5521 transitions. [2024-11-18 15:43:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:43:26,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:26,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:26,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:43:26,872 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:26,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash 540223602, now seen corresponding path program 1 times [2024-11-18 15:43:26,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:26,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158676748] [2024-11-18 15:43:26,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:26,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:26,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:26,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158676748] [2024-11-18 15:43:26,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158676748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:26,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:26,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:26,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587909507] [2024-11-18 15:43:26,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:26,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:26,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:26,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:26,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:26,995 INFO L87 Difference]: Start difference. First operand 3188 states and 5521 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:27,496 INFO L93 Difference]: Finished difference Result 5289 states and 8664 transitions. [2024-11-18 15:43:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:27,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:43:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:27,517 INFO L225 Difference]: With dead ends: 5289 [2024-11-18 15:43:27,518 INFO L226 Difference]: Without dead ends: 4232 [2024-11-18 15:43:27,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:43:27,523 INFO L432 NwaCegarLoop]: 4199 mSDtfsCounter, 4261 mSDsluCounter, 12562 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4274 SdHoareTripleChecker+Valid, 16761 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:27,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4274 Valid, 16761 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:43:27,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2024-11-18 15:43:27,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 4135. [2024-11-18 15:43:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4135 states, 3787 states have (on average 1.68127805650911) internal successors, (6367), 3856 states have internal predecessors, (6367), 178 states have call successors, (178), 103 states have call predecessors, (178), 168 states have return successors, (432), 191 states have call predecessors, (432), 176 states have call successors, (432) [2024-11-18 15:43:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4135 states to 4135 states and 6977 transitions. [2024-11-18 15:43:27,685 INFO L78 Accepts]: Start accepts. Automaton has 4135 states and 6977 transitions. Word has length 69 [2024-11-18 15:43:27,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:27,685 INFO L471 AbstractCegarLoop]: Abstraction has 4135 states and 6977 transitions. [2024-11-18 15:43:27,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:27,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4135 states and 6977 transitions. [2024-11-18 15:43:27,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:43:27,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:27,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:27,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:43:27,689 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:27,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:27,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1488362508, now seen corresponding path program 1 times [2024-11-18 15:43:27,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:27,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63728250] [2024-11-18 15:43:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:27,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:27,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:27,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63728250] [2024-11-18 15:43:27,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63728250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:27,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:27,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:43:27,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307804722] [2024-11-18 15:43:27,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:27,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:43:27,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:27,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:43:27,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:43:27,748 INFO L87 Difference]: Start difference. First operand 4135 states and 6977 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:27,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:27,992 INFO L93 Difference]: Finished difference Result 7203 states and 11638 transitions. [2024-11-18 15:43:27,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:43:27,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:43:27,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:28,018 INFO L225 Difference]: With dead ends: 7203 [2024-11-18 15:43:28,018 INFO L226 Difference]: Without dead ends: 5200 [2024-11-18 15:43:28,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:43:28,029 INFO L432 NwaCegarLoop]: 4309 mSDtfsCounter, 4283 mSDsluCounter, 4248 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4283 SdHoareTripleChecker+Valid, 8557 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:28,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4283 Valid, 8557 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:43:28,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5200 states. [2024-11-18 15:43:28,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5200 to 5119. [2024-11-18 15:43:28,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 4601 states have (on average 1.6246468159095848) internal successors, (7475), 4699 states have internal predecessors, (7475), 274 states have call successors, (274), 157 states have call predecessors, (274), 242 states have return successors, (585), 278 states have call predecessors, (585), 272 states have call successors, (585) [2024-11-18 15:43:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 8334 transitions. [2024-11-18 15:43:28,312 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 8334 transitions. Word has length 69 [2024-11-18 15:43:28,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:28,312 INFO L471 AbstractCegarLoop]: Abstraction has 5119 states and 8334 transitions. [2024-11-18 15:43:28,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 8334 transitions. [2024-11-18 15:43:28,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:43:28,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:28,323 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:28,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:43:28,323 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:28,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:28,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1912897413, now seen corresponding path program 1 times [2024-11-18 15:43:28,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:28,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732235931] [2024-11-18 15:43:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:28,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 15:43:28,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:28,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732235931] [2024-11-18 15:43:28,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732235931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:28,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890471836] [2024-11-18 15:43:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:28,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:28,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:28,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:43:28,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:43:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:28,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:43:28,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 15:43:28,632 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:28,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890471836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:28,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:28,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 15:43:28,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591245607] [2024-11-18 15:43:28,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:28,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:28,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:28,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:28,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:28,634 INFO L87 Difference]: Start difference. First operand 5119 states and 8334 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 15:43:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:28,986 INFO L93 Difference]: Finished difference Result 10950 states and 16924 transitions. [2024-11-18 15:43:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:28,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 112 [2024-11-18 15:43:28,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:29,027 INFO L225 Difference]: With dead ends: 10950 [2024-11-18 15:43:29,028 INFO L226 Difference]: Without dead ends: 7963 [2024-11-18 15:43:29,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:29,041 INFO L432 NwaCegarLoop]: 4153 mSDtfsCounter, 4112 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 4326 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:29,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 4326 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:29,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7963 states. [2024-11-18 15:43:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7963 to 7907. [2024-11-18 15:43:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7907 states, 6913 states have (on average 1.5538839866917402) internal successors, (10742), 7106 states have internal predecessors, (10742), 512 states have call successors, (512), 309 states have call predecessors, (512), 480 states have return successors, (1121), 507 states have call predecessors, (1121), 510 states have call successors, (1121) [2024-11-18 15:43:29,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7907 states to 7907 states and 12375 transitions. [2024-11-18 15:43:29,399 INFO L78 Accepts]: Start accepts. Automaton has 7907 states and 12375 transitions. Word has length 112 [2024-11-18 15:43:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:29,399 INFO L471 AbstractCegarLoop]: Abstraction has 7907 states and 12375 transitions. [2024-11-18 15:43:29,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 15:43:29,400 INFO L276 IsEmpty]: Start isEmpty. Operand 7907 states and 12375 transitions. [2024-11-18 15:43:29,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:43:29,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:29,412 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:29,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 15:43:29,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:29,620 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:29,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:29,621 INFO L85 PathProgramCache]: Analyzing trace with hash 482611867, now seen corresponding path program 1 times [2024-11-18 15:43:29,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:29,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680799468] [2024-11-18 15:43:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:29,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 15:43:29,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:29,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680799468] [2024-11-18 15:43:29,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680799468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:29,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925333033] [2024-11-18 15:43:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:29,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:29,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:43:29,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:43:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:29,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:43:29,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 15:43:29,829 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:29,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925333033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:29,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:29,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:43:29,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592397088] [2024-11-18 15:43:29,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:29,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:29,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:29,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:29,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:29,832 INFO L87 Difference]: Start difference. First operand 7907 states and 12375 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 15:43:30,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:30,347 INFO L93 Difference]: Finished difference Result 19041 states and 28859 transitions. [2024-11-18 15:43:30,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:30,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2024-11-18 15:43:30,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:30,419 INFO L225 Difference]: With dead ends: 19041 [2024-11-18 15:43:30,420 INFO L226 Difference]: Without dead ends: 13267 [2024-11-18 15:43:30,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:30,444 INFO L432 NwaCegarLoop]: 4315 mSDtfsCounter, 156 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 8466 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:30,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 8466 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:30,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13267 states. [2024-11-18 15:43:31,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13267 to 13267. [2024-11-18 15:43:31,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13267 states, 11336 states have (on average 1.4900317572335922) internal successors, (16891), 11702 states have internal predecessors, (16891), 977 states have call successors, (977), 609 states have call predecessors, (977), 952 states have return successors, (2348), 987 states have call predecessors, (2348), 975 states have call successors, (2348) [2024-11-18 15:43:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 20216 transitions. [2024-11-18 15:43:31,082 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 20216 transitions. Word has length 112 [2024-11-18 15:43:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:31,084 INFO L471 AbstractCegarLoop]: Abstraction has 13267 states and 20216 transitions. [2024-11-18 15:43:31,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 15:43:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 20216 transitions. [2024-11-18 15:43:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:43:31,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:31,121 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:43:31,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 15:43:31,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-18 15:43:31,322 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:31,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:31,323 INFO L85 PathProgramCache]: Analyzing trace with hash 918900513, now seen corresponding path program 1 times [2024-11-18 15:43:31,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:31,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543444139] [2024-11-18 15:43:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:31,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 15:43:31,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543444139] [2024-11-18 15:43:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543444139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403005780] [2024-11-18 15:43:31,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:31,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:31,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:31,414 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:43:31,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:43:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:31,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:43:31,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 15:43:31,670 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:31,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403005780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:31,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:31,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 15:43:31,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929728737] [2024-11-18 15:43:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:31,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:31,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:31,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:31,675 INFO L87 Difference]: Start difference. First operand 13267 states and 20216 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 15:43:32,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:32,824 INFO L93 Difference]: Finished difference Result 35095 states and 52393 transitions. [2024-11-18 15:43:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:32,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 145 [2024-11-18 15:43:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:32,966 INFO L225 Difference]: With dead ends: 35095 [2024-11-18 15:43:32,966 INFO L226 Difference]: Without dead ends: 23965 [2024-11-18 15:43:33,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:33,027 INFO L432 NwaCegarLoop]: 4173 mSDtfsCounter, 4069 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4069 SdHoareTripleChecker+Valid, 4346 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:33,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4069 Valid, 4346 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23965 states. [2024-11-18 15:43:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23965 to 23753. [2024-11-18 15:43:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23753 states, 19994 states have (on average 1.447884365309593) internal successors, (28949), 20722 states have internal predecessors, (28949), 1871 states have call successors, (1871), 1199 states have call predecessors, (1871), 1886 states have return successors, (4542), 1863 states have call predecessors, (4542), 1869 states have call successors, (4542) [2024-11-18 15:43:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23753 states to 23753 states and 35362 transitions. [2024-11-18 15:43:34,523 INFO L78 Accepts]: Start accepts. Automaton has 23753 states and 35362 transitions. Word has length 145 [2024-11-18 15:43:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:34,525 INFO L471 AbstractCegarLoop]: Abstraction has 23753 states and 35362 transitions. [2024-11-18 15:43:34,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 15:43:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 23753 states and 35362 transitions. [2024-11-18 15:43:34,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 15:43:34,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:34,600 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:34,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 15:43:34,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:34,806 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:34,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:34,806 INFO L85 PathProgramCache]: Analyzing trace with hash -714352319, now seen corresponding path program 1 times [2024-11-18 15:43:34,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:34,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931739252] [2024-11-18 15:43:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:34,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 15:43:34,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:34,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931739252] [2024-11-18 15:43:34,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931739252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:34,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654565535] [2024-11-18 15:43:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:34,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:34,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:34,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:43:34,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 15:43:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:35,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:43:35,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 15:43:35,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:35,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654565535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:35,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:35,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:43:35,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612719784] [2024-11-18 15:43:35,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:35,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:35,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:35,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:35,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:35,124 INFO L87 Difference]: Start difference. First operand 23753 states and 35362 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 15:43:36,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:36,443 INFO L93 Difference]: Finished difference Result 47805 states and 72824 transitions. [2024-11-18 15:43:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:36,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2024-11-18 15:43:36,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:36,567 INFO L225 Difference]: With dead ends: 47805 [2024-11-18 15:43:36,567 INFO L226 Difference]: Without dead ends: 26187 [2024-11-18 15:43:36,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:36,639 INFO L432 NwaCegarLoop]: 4150 mSDtfsCounter, 4087 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 4184 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:36,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4087 Valid, 4184 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26187 states. [2024-11-18 15:43:37,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26187 to 26187. [2024-11-18 15:43:37,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26187 states, 22216 states have (on average 1.3978664025927259) internal successors, (31055), 22944 states have internal predecessors, (31055), 1925 states have call successors, (1925), 1357 states have call predecessors, (1925), 2044 states have return successors, (4610), 1917 states have call predecessors, (4610), 1923 states have call successors, (4610) [2024-11-18 15:43:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26187 states to 26187 states and 37590 transitions. [2024-11-18 15:43:37,781 INFO L78 Accepts]: Start accepts. Automaton has 26187 states and 37590 transitions. Word has length 163 [2024-11-18 15:43:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:37,782 INFO L471 AbstractCegarLoop]: Abstraction has 26187 states and 37590 transitions. [2024-11-18 15:43:37,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 15:43:37,782 INFO L276 IsEmpty]: Start isEmpty. Operand 26187 states and 37590 transitions. [2024-11-18 15:43:37,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 15:43:37,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:37,872 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, 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] [2024-11-18 15:43:37,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 15:43:38,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:38,076 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:38,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash 615881296, now seen corresponding path program 1 times [2024-11-18 15:43:38,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:38,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754712107] [2024-11-18 15:43:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:38,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 15:43:38,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:38,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754712107] [2024-11-18 15:43:38,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754712107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:38,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520585950] [2024-11-18 15:43:38,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:38,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:38,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:38,170 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:43:38,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 15:43:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:38,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:43:38,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 15:43:38,604 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:38,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520585950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:38,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:38,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:43:38,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795330214] [2024-11-18 15:43:38,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:38,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:38,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:38,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:38,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:38,610 INFO L87 Difference]: Start difference. First operand 26187 states and 37590 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 15:43:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:39,721 INFO L93 Difference]: Finished difference Result 42217 states and 60551 transitions. [2024-11-18 15:43:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:39,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2024-11-18 15:43:39,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:39,810 INFO L225 Difference]: With dead ends: 42217 [2024-11-18 15:43:39,810 INFO L226 Difference]: Without dead ends: 22697 [2024-11-18 15:43:39,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:39,851 INFO L432 NwaCegarLoop]: 4149 mSDtfsCounter, 4102 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4182 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:39,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4182 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:39,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22697 states. [2024-11-18 15:43:40,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22697 to 17105. [2024-11-18 15:43:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17105 states, 14834 states have (on average 1.385668059862478) internal successors, (20555), 15068 states have internal predecessors, (20555), 1185 states have call successors, (1185), 877 states have call predecessors, (1185), 1084 states have return successors, (1942), 1175 states have call predecessors, (1942), 1183 states have call successors, (1942) [2024-11-18 15:43:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17105 states to 17105 states and 23682 transitions. [2024-11-18 15:43:40,693 INFO L78 Accepts]: Start accepts. Automaton has 17105 states and 23682 transitions. Word has length 163 [2024-11-18 15:43:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:40,693 INFO L471 AbstractCegarLoop]: Abstraction has 17105 states and 23682 transitions. [2024-11-18 15:43:40,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 15:43:40,693 INFO L276 IsEmpty]: Start isEmpty. Operand 17105 states and 23682 transitions. [2024-11-18 15:43:40,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 15:43:40,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:40,720 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:40,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 15:43:40,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 15:43:40,921 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:40,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1230369358, now seen corresponding path program 1 times [2024-11-18 15:43:40,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:40,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098138486] [2024-11-18 15:43:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:40,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 15:43:41,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:41,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098138486] [2024-11-18 15:43:41,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098138486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:41,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072374783] [2024-11-18 15:43:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:41,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:41,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:41,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:43:41,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 15:43:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:41,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:43:41,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 15:43:41,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:41,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072374783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:41,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:41,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:43:41,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581767533] [2024-11-18 15:43:41,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:41,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:41,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:41,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:41,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:41,191 INFO L87 Difference]: Start difference. First operand 17105 states and 23682 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 15:43:41,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:41,792 INFO L93 Difference]: Finished difference Result 28464 states and 38556 transitions. [2024-11-18 15:43:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:41,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 163 [2024-11-18 15:43:41,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:41,858 INFO L225 Difference]: With dead ends: 28464 [2024-11-18 15:43:41,859 INFO L226 Difference]: Without dead ends: 18039 [2024-11-18 15:43:41,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:41,886 INFO L432 NwaCegarLoop]: 4185 mSDtfsCounter, 4085 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:41,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 4362 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:41,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18039 states. [2024-11-18 15:43:42,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18039 to 17929. [2024-11-18 15:43:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17929 states, 15614 states have (on average 1.3634558729345458) internal successors, (21289), 15848 states have internal predecessors, (21289), 1185 states have call successors, (1185), 921 states have call predecessors, (1185), 1128 states have return successors, (1986), 1175 states have call predecessors, (1986), 1183 states have call successors, (1986) [2024-11-18 15:43:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 24460 transitions. [2024-11-18 15:43:42,879 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 24460 transitions. Word has length 163 [2024-11-18 15:43:42,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:42,879 INFO L471 AbstractCegarLoop]: Abstraction has 17929 states and 24460 transitions. [2024-11-18 15:43:42,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 15:43:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 24460 transitions. [2024-11-18 15:43:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-18 15:43:42,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:42,912 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:42,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 15:43:43,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:43,117 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:43,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash 916086420, now seen corresponding path program 1 times [2024-11-18 15:43:43,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:43,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073209878] [2024-11-18 15:43:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:43,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 15:43:43,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:43,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073209878] [2024-11-18 15:43:43,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073209878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:43,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760591059] [2024-11-18 15:43:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:43,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:43,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:43,235 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:43:43,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 15:43:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:43,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:43:43,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 15:43:43,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:43,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760591059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:43,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:43,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:43:43,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791043183] [2024-11-18 15:43:43,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:43,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:43,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:43,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:43,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:43,406 INFO L87 Difference]: Start difference. First operand 17929 states and 24460 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 15:43:44,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:44,829 INFO L93 Difference]: Finished difference Result 47247 states and 63142 transitions. [2024-11-18 15:43:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:44,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 164 [2024-11-18 15:43:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:44,941 INFO L225 Difference]: With dead ends: 47247 [2024-11-18 15:43:44,942 INFO L226 Difference]: Without dead ends: 31457 [2024-11-18 15:43:44,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:44,974 INFO L432 NwaCegarLoop]: 4312 mSDtfsCounter, 151 mSDsluCounter, 4141 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 8453 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:44,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 8453 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31457 states. [2024-11-18 15:43:46,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31457 to 31453. [2024-11-18 15:43:46,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31453 states, 27068 states have (on average 1.321745234224915) internal successors, (35777), 27534 states have internal predecessors, (35777), 2247 states have call successors, (2247), 1721 states have call predecessors, (2247), 2136 states have return successors, (4298), 2229 states have call predecessors, (4298), 2245 states have call successors, (4298) [2024-11-18 15:43:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31453 states to 31453 states and 42322 transitions. [2024-11-18 15:43:46,513 INFO L78 Accepts]: Start accepts. Automaton has 31453 states and 42322 transitions. Word has length 164 [2024-11-18 15:43:46,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:46,513 INFO L471 AbstractCegarLoop]: Abstraction has 31453 states and 42322 transitions. [2024-11-18 15:43:46,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 15:43:46,514 INFO L276 IsEmpty]: Start isEmpty. Operand 31453 states and 42322 transitions. [2024-11-18 15:43:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 15:43:46,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:46,562 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:46,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 15:43:46,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:46,764 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:46,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:46,764 INFO L85 PathProgramCache]: Analyzing trace with hash 122742823, now seen corresponding path program 1 times [2024-11-18 15:43:46,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:46,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851948538] [2024-11-18 15:43:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:46,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-18 15:43:46,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:46,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851948538] [2024-11-18 15:43:46,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851948538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:46,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992292270] [2024-11-18 15:43:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:46,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:46,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:46,880 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:43:46,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 15:43:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:47,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:43:47,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 15:43:47,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:47,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992292270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:47,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:47,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:43:47,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234503150] [2024-11-18 15:43:47,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:47,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:47,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:47,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:47,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:47,033 INFO L87 Difference]: Start difference. First operand 31453 states and 42322 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 15:43:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:49,405 INFO L93 Difference]: Finished difference Result 85811 states and 114718 transitions. [2024-11-18 15:43:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:49,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 165 [2024-11-18 15:43:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:49,604 INFO L225 Difference]: With dead ends: 85811 [2024-11-18 15:43:49,604 INFO L226 Difference]: Without dead ends: 56505 [2024-11-18 15:43:49,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:49,680 INFO L432 NwaCegarLoop]: 4318 mSDtfsCounter, 160 mSDsluCounter, 4145 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 8463 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:49,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 8463 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56505 states. [2024-11-18 15:43:52,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56505 to 56501. [2024-11-18 15:43:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56501 states, 48184 states have (on average 1.2899095135314627) internal successors, (62153), 49114 states have internal predecessors, (62153), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 4048 states have return successors, (9288), 4233 states have call predecessors, (9288), 4265 states have call successors, (9288) [2024-11-18 15:43:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56501 states to 56501 states and 75708 transitions. [2024-11-18 15:43:53,028 INFO L78 Accepts]: Start accepts. Automaton has 56501 states and 75708 transitions. Word has length 165 [2024-11-18 15:43:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:53,028 INFO L471 AbstractCegarLoop]: Abstraction has 56501 states and 75708 transitions. [2024-11-18 15:43:53,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 15:43:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand 56501 states and 75708 transitions. [2024-11-18 15:43:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 15:43:53,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:53,089 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:53,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 15:43:53,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 15:43:53,289 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:53,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:53,290 INFO L85 PathProgramCache]: Analyzing trace with hash -458857079, now seen corresponding path program 1 times [2024-11-18 15:43:53,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:53,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388758612] [2024-11-18 15:43:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:53,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 15:43:53,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:53,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388758612] [2024-11-18 15:43:53,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388758612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:53,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121463074] [2024-11-18 15:43:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:53,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:53,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:53,378 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:43:53,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 15:43:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:53,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:43:53,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 15:43:53,547 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:53,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121463074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:53,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:53,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:43:53,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734410590] [2024-11-18 15:43:53,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:53,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:53,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:53,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:53,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:53,551 INFO L87 Difference]: Start difference. First operand 56501 states and 75708 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 15:43:56,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:56,028 INFO L93 Difference]: Finished difference Result 99085 states and 132162 transitions. [2024-11-18 15:43:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:56,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 165 [2024-11-18 15:43:56,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:56,241 INFO L225 Difference]: With dead ends: 99085 [2024-11-18 15:43:56,241 INFO L226 Difference]: Without dead ends: 57897 [2024-11-18 15:43:56,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:56,548 INFO L432 NwaCegarLoop]: 4175 mSDtfsCounter, 4105 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4105 SdHoareTripleChecker+Valid, 4350 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:56,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4105 Valid, 4350 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57897 states.