./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.05.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 16e147b68a860b93a665f8bd36a316225675cf186d50a72fc3242bc6ec552f78 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:15:14,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:15:14,608 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:15:14,611 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:15:14,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:15:14,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:15:14,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:15:14,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:15:14,640 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:15:14,642 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:15:14,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:15:14,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:15:14,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:15:14,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:15:14,644 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:15:14,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:15:14,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:15:14,645 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:15:14,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:15:14,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:15:14,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:15:14,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:15:14,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:15:14,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:15:14,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:15:14,647 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:15:14,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:15:14,647 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:15:14,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:15:14,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:15:14,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:15:14,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:15:14,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:15:14,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:15:14,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:15:14,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:15:14,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:15:14,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:15:14,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:15:14,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:15:14,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:15:14,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:15:14,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16e147b68a860b93a665f8bd36a316225675cf186d50a72fc3242bc6ec552f78 [2024-10-24 01:15:14,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:15:14,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:15:14,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:15:14,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:15:14,903 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:15:14,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.05.cil-2.c [2024-10-24 01:15:16,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:15:16,270 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:15:16,271 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.05.cil-2.c [2024-10-24 01:15:16,282 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac9bfb9b/43f0a1b6b78448278d7dd2c2da723461/FLAG8be9ab83e [2024-10-24 01:15:16,295 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac9bfb9b/43f0a1b6b78448278d7dd2c2da723461 [2024-10-24 01:15:16,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:15:16,299 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:15:16,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:15:16,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:15:16,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:15:16,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f8108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16, skipping insertion in model container [2024-10-24 01:15:16,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,343 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:15:16,475 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.05.cil-2.c[671,684] [2024-10-24 01:15:16,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:15:16,538 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:15:16,547 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.05.cil-2.c[671,684] [2024-10-24 01:15:16,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:15:16,604 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:15:16,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16 WrapperNode [2024-10-24 01:15:16,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:15:16,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:15:16,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:15:16,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:15:16,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,659 INFO L138 Inliner]: procedures = 38, calls = 47, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 465 [2024-10-24 01:15:16,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:15:16,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:15:16,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:15:16,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:15:16,671 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,684 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]. [2024-10-24 01:15:16,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:15:16,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:15:16,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:15:16,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:15:16,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (1/1) ... [2024-10-24 01:15:16,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:15:16,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:15:16,733 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) [2024-10-24 01:15:16,735 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 [2024-10-24 01:15:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:15:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-24 01:15:16,774 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-24 01:15:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-24 01:15:16,774 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-24 01:15:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-24 01:15:16,775 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-24 01:15:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 01:15:16,775 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 01:15:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-24 01:15:16,775 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-24 01:15:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-24 01:15:16,775 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-24 01:15:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:15:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-24 01:15:16,775 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-24 01:15:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:15:16,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:15:16,848 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:15:16,849 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:15:17,321 INFO L? ?]: Removed 59 outVars from TransFormulas that were not future-live. [2024-10-24 01:15:17,321 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:15:17,370 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:15:17,371 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-24 01:15:17,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:15:17 BoogieIcfgContainer [2024-10-24 01:15:17,371 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:15:17,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:15:17,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:15:17,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:15:17,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:15:16" (1/3) ... [2024-10-24 01:15:17,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2322a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:15:17, skipping insertion in model container [2024-10-24 01:15:17,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:16" (2/3) ... [2024-10-24 01:15:17,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2322a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:15:17, skipping insertion in model container [2024-10-24 01:15:17,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:15:17" (3/3) ... [2024-10-24 01:15:17,380 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.05.cil-2.c [2024-10-24 01:15:17,395 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:15:17,395 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:15:17,447 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:15:17,452 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;@510c2ea4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:15:17,452 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:15:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 165 states have (on average 1.709090909090909) internal successors, (282), 169 states have internal predecessors, (282), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-24 01:15:17,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:17,466 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:17,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:17,468 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:17,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:17,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1900971462, now seen corresponding path program 1 times [2024-10-24 01:15:17,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:17,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032849926] [2024-10-24 01:15:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:17,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:17,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:17,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:17,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:17,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:17,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:17,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:17,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032849926] [2024-10-24 01:15:17,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032849926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:17,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:17,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:15:17,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668803308] [2024-10-24 01:15:17,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:17,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:15:17,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:17,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:15:17,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:15:17,993 INFO L87 Difference]: Start difference. First operand has 195 states, 165 states have (on average 1.709090909090909) internal successors, (282), 169 states have internal predecessors, (282), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:19,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:19,362 INFO L93 Difference]: Finished difference Result 686 states and 1158 transitions. [2024-10-24 01:15:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 01:15:19,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:19,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:19,384 INFO L225 Difference]: With dead ends: 686 [2024-10-24 01:15:19,384 INFO L226 Difference]: Without dead ends: 498 [2024-10-24 01:15:19,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:15:19,393 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 733 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:19,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 622 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 01:15:19,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-10-24 01:15:19,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 377. [2024-10-24 01:15:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 328 states have (on average 1.6097560975609757) internal successors, (528), 331 states have internal predecessors, (528), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-24 01:15:19,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 599 transitions. [2024-10-24 01:15:19,489 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 599 transitions. Word has length 91 [2024-10-24 01:15:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:19,490 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 599 transitions. [2024-10-24 01:15:19,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 599 transitions. [2024-10-24 01:15:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:19,493 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:19,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:19,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:15:19,494 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:19,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:19,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1532329918, now seen corresponding path program 1 times [2024-10-24 01:15:19,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:19,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28107954] [2024-10-24 01:15:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:19,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:19,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:19,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:19,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:19,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:19,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:19,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:19,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28107954] [2024-10-24 01:15:19,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28107954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:19,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:19,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:15:19,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521549928] [2024-10-24 01:15:19,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:19,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:15:19,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:19,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:15:19,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:19,668 INFO L87 Difference]: Start difference. First operand 377 states and 599 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:21,122 INFO L93 Difference]: Finished difference Result 1114 states and 1793 transitions. [2024-10-24 01:15:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:15:21,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:21,127 INFO L225 Difference]: With dead ends: 1114 [2024-10-24 01:15:21,129 INFO L226 Difference]: Without dead ends: 748 [2024-10-24 01:15:21,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 01:15:21,132 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 736 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:21,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1160 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 01:15:21,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2024-10-24 01:15:21,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 549. [2024-10-24 01:15:21,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 479 states have (on average 1.6012526096033404) internal successors, (767), 483 states have internal predecessors, (767), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-10-24 01:15:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 868 transitions. [2024-10-24 01:15:21,172 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 868 transitions. Word has length 91 [2024-10-24 01:15:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:21,173 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 868 transitions. [2024-10-24 01:15:21,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 868 transitions. [2024-10-24 01:15:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:21,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:21,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:21,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:15:21,175 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:21,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:21,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1505264316, now seen corresponding path program 1 times [2024-10-24 01:15:21,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:21,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077419210] [2024-10-24 01:15:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:21,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:21,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:21,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:21,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:21,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:21,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:21,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:21,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077419210] [2024-10-24 01:15:21,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077419210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:21,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:21,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:15:21,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977453564] [2024-10-24 01:15:21,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:21,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:15:21,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:21,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:15:21,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:21,343 INFO L87 Difference]: Start difference. First operand 549 states and 868 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:22,704 INFO L93 Difference]: Finished difference Result 1751 states and 2812 transitions. [2024-10-24 01:15:22,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:15:22,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:22,711 INFO L225 Difference]: With dead ends: 1751 [2024-10-24 01:15:22,711 INFO L226 Difference]: Without dead ends: 1213 [2024-10-24 01:15:22,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 01:15:22,713 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 734 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:22,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1158 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 01:15:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-10-24 01:15:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 894. [2024-10-24 01:15:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 782 states have (on average 1.5933503836317136) internal successors, (1246), 788 states have internal predecessors, (1246), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2024-10-24 01:15:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1411 transitions. [2024-10-24 01:15:22,758 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1411 transitions. Word has length 91 [2024-10-24 01:15:22,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:22,760 INFO L471 AbstractCegarLoop]: Abstraction has 894 states and 1411 transitions. [2024-10-24 01:15:22,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:22,760 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1411 transitions. [2024-10-24 01:15:22,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:22,765 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:22,765 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:22,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:15:22,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:22,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:22,766 INFO L85 PathProgramCache]: Analyzing trace with hash 712366082, now seen corresponding path program 1 times [2024-10-24 01:15:22,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:22,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835092588] [2024-10-24 01:15:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:22,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:22,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:22,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:22,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:22,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:22,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:22,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:22,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835092588] [2024-10-24 01:15:22,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835092588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:22,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:22,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:15:22,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857876329] [2024-10-24 01:15:22,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:22,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:15:22,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:22,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:15:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:22,910 INFO L87 Difference]: Start difference. First operand 894 states and 1411 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:23,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:23,563 INFO L93 Difference]: Finished difference Result 2084 states and 3346 transitions. [2024-10-24 01:15:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:15:23,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:23,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:23,569 INFO L225 Difference]: With dead ends: 2084 [2024-10-24 01:15:23,569 INFO L226 Difference]: Without dead ends: 1201 [2024-10-24 01:15:23,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:15:23,572 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 623 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:23,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 486 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 01:15:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2024-10-24 01:15:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 894. [2024-10-24 01:15:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 782 states have (on average 1.5869565217391304) internal successors, (1241), 788 states have internal predecessors, (1241), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2024-10-24 01:15:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1406 transitions. [2024-10-24 01:15:23,629 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1406 transitions. Word has length 91 [2024-10-24 01:15:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:23,629 INFO L471 AbstractCegarLoop]: Abstraction has 894 states and 1406 transitions. [2024-10-24 01:15:23,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1406 transitions. [2024-10-24 01:15:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:23,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:23,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:23,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:15:23,631 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:23,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1848496764, now seen corresponding path program 1 times [2024-10-24 01:15:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:23,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527469106] [2024-10-24 01:15:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:23,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:23,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:23,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:23,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:23,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:23,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:23,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:23,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527469106] [2024-10-24 01:15:23,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527469106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:23,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:23,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:15:23,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262639584] [2024-10-24 01:15:23,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:23,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:15:23,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:23,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:15:23,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:23,798 INFO L87 Difference]: Start difference. First operand 894 states and 1406 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:24,423 INFO L93 Difference]: Finished difference Result 2078 states and 3320 transitions. [2024-10-24 01:15:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:15:24,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:24,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:24,428 INFO L225 Difference]: With dead ends: 2078 [2024-10-24 01:15:24,428 INFO L226 Difference]: Without dead ends: 1195 [2024-10-24 01:15:24,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:15:24,431 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 627 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:24,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 486 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 01:15:24,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2024-10-24 01:15:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 894. [2024-10-24 01:15:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 782 states have (on average 1.5805626598465474) internal successors, (1236), 788 states have internal predecessors, (1236), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2024-10-24 01:15:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1401 transitions. [2024-10-24 01:15:24,509 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1401 transitions. Word has length 91 [2024-10-24 01:15:24,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:24,510 INFO L471 AbstractCegarLoop]: Abstraction has 894 states and 1401 transitions. [2024-10-24 01:15:24,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1401 transitions. [2024-10-24 01:15:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:24,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:24,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:24,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:15:24,512 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:24,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash -961273918, now seen corresponding path program 1 times [2024-10-24 01:15:24,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:24,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502886907] [2024-10-24 01:15:24,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:24,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:24,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:24,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:24,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:24,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:24,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:24,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:24,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502886907] [2024-10-24 01:15:24,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502886907] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:24,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:24,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:15:24,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941750958] [2024-10-24 01:15:24,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:24,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:15:24,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:24,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:15:24,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:24,642 INFO L87 Difference]: Start difference. First operand 894 states and 1401 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:25,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:25,976 INFO L93 Difference]: Finished difference Result 3229 states and 5117 transitions. [2024-10-24 01:15:25,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 01:15:25,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:25,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:25,987 INFO L225 Difference]: With dead ends: 3229 [2024-10-24 01:15:25,987 INFO L226 Difference]: Without dead ends: 2346 [2024-10-24 01:15:25,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 01:15:25,991 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 964 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:25,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 760 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 01:15:25,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2024-10-24 01:15:26,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 1590. [2024-10-24 01:15:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1398 states have (on average 1.5751072961373391) internal successors, (2202), 1408 states have internal predecessors, (2202), 129 states have call successors, (129), 55 states have call predecessors, (129), 62 states have return successors, (162), 134 states have call predecessors, (162), 127 states have call successors, (162) [2024-10-24 01:15:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2493 transitions. [2024-10-24 01:15:26,083 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2493 transitions. Word has length 91 [2024-10-24 01:15:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:26,083 INFO L471 AbstractCegarLoop]: Abstraction has 1590 states and 2493 transitions. [2024-10-24 01:15:26,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:26,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2493 transitions. [2024-10-24 01:15:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:26,085 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:26,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:26,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:15:26,085 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:26,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:26,086 INFO L85 PathProgramCache]: Analyzing trace with hash -884373120, now seen corresponding path program 1 times [2024-10-24 01:15:26,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:26,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725600988] [2024-10-24 01:15:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:26,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:26,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:26,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:26,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:26,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:26,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:26,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:26,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725600988] [2024-10-24 01:15:26,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725600988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:26,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:26,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:15:26,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002500705] [2024-10-24 01:15:26,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:26,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:15:26,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:26,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:15:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:26,195 INFO L87 Difference]: Start difference. First operand 1590 states and 2493 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:27,655 INFO L93 Difference]: Finished difference Result 5839 states and 9251 transitions. [2024-10-24 01:15:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 01:15:27,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:27,676 INFO L225 Difference]: With dead ends: 5839 [2024-10-24 01:15:27,677 INFO L226 Difference]: Without dead ends: 4260 [2024-10-24 01:15:27,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 01:15:27,683 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 756 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:27,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1147 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 01:15:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2024-10-24 01:15:27,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 2895. [2024-10-24 01:15:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2547 states have (on average 1.5641931684334511) internal successors, (3984), 2565 states have internal predecessors, (3984), 229 states have call successors, (229), 103 states have call predecessors, (229), 118 states have return successors, (324), 242 states have call predecessors, (324), 227 states have call successors, (324) [2024-10-24 01:15:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4537 transitions. [2024-10-24 01:15:27,896 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4537 transitions. Word has length 91 [2024-10-24 01:15:27,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:27,898 INFO L471 AbstractCegarLoop]: Abstraction has 2895 states and 4537 transitions. [2024-10-24 01:15:27,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:27,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4537 transitions. [2024-10-24 01:15:27,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:27,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:27,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:27,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:15:27,902 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:27,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:27,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1851723774, now seen corresponding path program 1 times [2024-10-24 01:15:27,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:27,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958752047] [2024-10-24 01:15:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:27,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:27,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:27,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:27,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:27,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:28,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:28,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:28,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958752047] [2024-10-24 01:15:28,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958752047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:28,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:28,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:15:28,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309279029] [2024-10-24 01:15:28,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:28,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:15:28,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:28,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:15:28,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:28,008 INFO L87 Difference]: Start difference. First operand 2895 states and 4537 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:28,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:28,626 INFO L93 Difference]: Finished difference Result 6600 states and 10482 transitions. [2024-10-24 01:15:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:15:28,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:28,641 INFO L225 Difference]: With dead ends: 6600 [2024-10-24 01:15:28,641 INFO L226 Difference]: Without dead ends: 3716 [2024-10-24 01:15:28,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:15:28,649 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 623 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:28,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 485 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:15:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2024-10-24 01:15:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 2895. [2024-10-24 01:15:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2547 states have (on average 1.5575186493914408) internal successors, (3967), 2565 states have internal predecessors, (3967), 229 states have call successors, (229), 103 states have call predecessors, (229), 118 states have return successors, (324), 242 states have call predecessors, (324), 227 states have call successors, (324) [2024-10-24 01:15:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4520 transitions. [2024-10-24 01:15:28,815 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4520 transitions. Word has length 91 [2024-10-24 01:15:28,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:28,816 INFO L471 AbstractCegarLoop]: Abstraction has 2895 states and 4520 transitions. [2024-10-24 01:15:28,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4520 transitions. [2024-10-24 01:15:28,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:28,818 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:28,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:28,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:15:28,819 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:28,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash 56734016, now seen corresponding path program 1 times [2024-10-24 01:15:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:28,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495515928] [2024-10-24 01:15:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:28,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:28,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:28,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:28,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:28,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:28,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:28,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:28,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495515928] [2024-10-24 01:15:28,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495515928] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:28,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:28,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:15:28,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593738835] [2024-10-24 01:15:28,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:28,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:15:28,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:28,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:15:28,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:28,939 INFO L87 Difference]: Start difference. First operand 2895 states and 4520 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:30,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:30,437 INFO L93 Difference]: Finished difference Result 10492 states and 16533 transitions. [2024-10-24 01:15:30,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 01:15:30,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:30,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:30,471 INFO L225 Difference]: With dead ends: 10492 [2024-10-24 01:15:30,472 INFO L226 Difference]: Without dead ends: 7608 [2024-10-24 01:15:30,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 01:15:30,482 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 795 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:30,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1151 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 01:15:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7608 states. [2024-10-24 01:15:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7608 to 5601. [2024-10-24 01:15:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5601 states, 4949 states have (on average 1.5540513234996969) internal successors, (7691), 4983 states have internal predecessors, (7691), 421 states have call successors, (421), 199 states have call predecessors, (421), 230 states have return successors, (694), 450 states have call predecessors, (694), 419 states have call successors, (694) [2024-10-24 01:15:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5601 states to 5601 states and 8806 transitions. [2024-10-24 01:15:30,831 INFO L78 Accepts]: Start accepts. Automaton has 5601 states and 8806 transitions. Word has length 91 [2024-10-24 01:15:30,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:30,831 INFO L471 AbstractCegarLoop]: Abstraction has 5601 states and 8806 transitions. [2024-10-24 01:15:30,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:30,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5601 states and 8806 transitions. [2024-10-24 01:15:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:30,837 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:30,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:30,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:15:30,837 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:30,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:30,838 INFO L85 PathProgramCache]: Analyzing trace with hash -435892158, now seen corresponding path program 1 times [2024-10-24 01:15:30,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:30,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488432516] [2024-10-24 01:15:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:30,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:30,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:30,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:30,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:30,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:30,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:30,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:30,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488432516] [2024-10-24 01:15:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488432516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:30,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:30,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:15:30,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578804991] [2024-10-24 01:15:30,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:30,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:15:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:15:30,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:30,966 INFO L87 Difference]: Start difference. First operand 5601 states and 8806 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:32,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:32,831 INFO L93 Difference]: Finished difference Result 20012 states and 31749 transitions. [2024-10-24 01:15:32,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 01:15:32,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:32,889 INFO L225 Difference]: With dead ends: 20012 [2024-10-24 01:15:32,889 INFO L226 Difference]: Without dead ends: 14422 [2024-10-24 01:15:32,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 01:15:32,907 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 721 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:32,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1151 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 01:15:32,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14422 states. [2024-10-24 01:15:33,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14422 to 11010. [2024-10-24 01:15:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11010 states, 9766 states have (on average 1.5528363710833504) internal successors, (15165), 9832 states have internal predecessors, (15165), 789 states have call successors, (789), 391 states have call predecessors, (789), 454 states have return successors, (1580), 850 states have call predecessors, (1580), 787 states have call successors, (1580) [2024-10-24 01:15:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 17534 transitions. [2024-10-24 01:15:33,578 INFO L78 Accepts]: Start accepts. Automaton has 11010 states and 17534 transitions. Word has length 91 [2024-10-24 01:15:33,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:33,578 INFO L471 AbstractCegarLoop]: Abstraction has 11010 states and 17534 transitions. [2024-10-24 01:15:33,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:33,579 INFO L276 IsEmpty]: Start isEmpty. Operand 11010 states and 17534 transitions. [2024-10-24 01:15:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:33,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:33,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:33,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:15:33,588 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:33,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:33,588 INFO L85 PathProgramCache]: Analyzing trace with hash 518048000, now seen corresponding path program 1 times [2024-10-24 01:15:33,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:33,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244272660] [2024-10-24 01:15:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:33,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:33,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:33,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:33,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:33,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:33,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:33,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:33,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244272660] [2024-10-24 01:15:33,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244272660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:33,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:33,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:15:33,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272390934] [2024-10-24 01:15:33,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:33,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:15:33,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:33,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:15:33,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:33,692 INFO L87 Difference]: Start difference. First operand 11010 states and 17534 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:35,113 INFO L93 Difference]: Finished difference Result 24664 states and 39895 transitions. [2024-10-24 01:15:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:15:35,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:35,163 INFO L225 Difference]: With dead ends: 24664 [2024-10-24 01:15:35,163 INFO L226 Difference]: Without dead ends: 13665 [2024-10-24 01:15:35,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:15:35,194 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 620 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:35,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 485 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:15:35,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13665 states. [2024-10-24 01:15:35,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13665 to 11010. [2024-10-24 01:15:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11010 states, 9766 states have (on average 1.5461806266639362) internal successors, (15100), 9832 states have internal predecessors, (15100), 789 states have call successors, (789), 391 states have call predecessors, (789), 454 states have return successors, (1580), 850 states have call predecessors, (1580), 787 states have call successors, (1580) [2024-10-24 01:15:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 17469 transitions. [2024-10-24 01:15:35,797 INFO L78 Accepts]: Start accepts. Automaton has 11010 states and 17469 transitions. Word has length 91 [2024-10-24 01:15:35,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:35,797 INFO L471 AbstractCegarLoop]: Abstraction has 11010 states and 17469 transitions. [2024-10-24 01:15:35,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 11010 states and 17469 transitions. [2024-10-24 01:15:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:15:35,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:35,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:35,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:15:35,805 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:35,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:35,806 INFO L85 PathProgramCache]: Analyzing trace with hash -698105726, now seen corresponding path program 1 times [2024-10-24 01:15:35,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:35,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313792835] [2024-10-24 01:15:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:35,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:35,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:35,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:35,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:35,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:35,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:15:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:35,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313792835] [2024-10-24 01:15:35,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313792835] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:35,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:15:35,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:15:35,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523085875] [2024-10-24 01:15:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:35,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:15:35,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:35,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:15:35,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:15:35,953 INFO L87 Difference]: Start difference. First operand 11010 states and 17469 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:37,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:37,748 INFO L93 Difference]: Finished difference Result 31286 states and 49619 transitions. [2024-10-24 01:15:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 01:15:37,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 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 91 [2024-10-24 01:15:37,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:37,870 INFO L225 Difference]: With dead ends: 31286 [2024-10-24 01:15:37,870 INFO L226 Difference]: Without dead ends: 20288 [2024-10-24 01:15:37,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-24 01:15:37,899 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 927 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:37,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 843 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 01:15:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20288 states. [2024-10-24 01:15:39,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20288 to 16425. [2024-10-24 01:15:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16425 states, 14536 states have (on average 1.534053384700055) internal successors, (22299), 14667 states have internal predecessors, (22299), 1204 states have call successors, (1204), 589 states have call predecessors, (1204), 684 states have return successors, (2239), 1232 states have call predecessors, (2239), 1202 states have call successors, (2239) [2024-10-24 01:15:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16425 states to 16425 states and 25742 transitions. [2024-10-24 01:15:39,432 INFO L78 Accepts]: Start accepts. Automaton has 16425 states and 25742 transitions. Word has length 91 [2024-10-24 01:15:39,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:39,433 INFO L471 AbstractCegarLoop]: Abstraction has 16425 states and 25742 transitions. [2024-10-24 01:15:39,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:15:39,433 INFO L276 IsEmpty]: Start isEmpty. Operand 16425 states and 25742 transitions. [2024-10-24 01:15:39,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-24 01:15:39,462 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:39,462 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:39,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:15:39,463 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:39,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:39,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1729318962, now seen corresponding path program 1 times [2024-10-24 01:15:39,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:39,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019404082] [2024-10-24 01:15:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:39,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:39,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:39,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:39,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:39,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:39,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:39,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 01:15:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:39,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 01:15:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:39,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-24 01:15:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:39,601 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 01:15:39,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:39,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019404082] [2024-10-24 01:15:39,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019404082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:15:39,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418322180] [2024-10-24 01:15:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:39,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:15:39,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:15:39,607 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) [2024-10-24 01:15:39,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 01:15:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:39,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 01:15:39,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:15:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-24 01:15:39,802 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 01:15:39,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418322180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:39,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 01:15:39,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 01:15:39,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047635520] [2024-10-24 01:15:39,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:39,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:15:39,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:39,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:15:39,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:39,804 INFO L87 Difference]: Start difference. First operand 16425 states and 25742 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2024-10-24 01:15:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:41,149 INFO L93 Difference]: Finished difference Result 48954 states and 77236 transitions. [2024-10-24 01:15:41,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:15:41,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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 147 [2024-10-24 01:15:41,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:41,249 INFO L225 Difference]: With dead ends: 48954 [2024-10-24 01:15:41,250 INFO L226 Difference]: Without dead ends: 32541 [2024-10-24 01:15:41,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:41,288 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 251 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:41,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 523 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:15:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32541 states. [2024-10-24 01:15:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32541 to 32439. [2024-10-24 01:15:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32439 states, 28718 states have (on average 1.5301901246604916) internal successors, (43944), 28978 states have internal predecessors, (43944), 2352 states have call successors, (2352), 1177 states have call predecessors, (2352), 1368 states have return successors, (4361), 2347 states have call predecessors, (4361), 2350 states have call successors, (4361) [2024-10-24 01:15:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32439 states to 32439 states and 50657 transitions. [2024-10-24 01:15:43,307 INFO L78 Accepts]: Start accepts. Automaton has 32439 states and 50657 transitions. Word has length 147 [2024-10-24 01:15:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:43,307 INFO L471 AbstractCegarLoop]: Abstraction has 32439 states and 50657 transitions. [2024-10-24 01:15:43,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2024-10-24 01:15:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 32439 states and 50657 transitions. [2024-10-24 01:15:43,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-24 01:15:43,374 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:43,375 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:43,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 01:15:43,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 01:15:43,577 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:43,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash -25444176, now seen corresponding path program 1 times [2024-10-24 01:15:43,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881880657] [2024-10-24 01:15:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:43,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:43,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:43,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:43,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:43,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:43,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 01:15:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:43,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 01:15:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:43,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-24 01:15:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 01:15:43,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:43,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881880657] [2024-10-24 01:15:43,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881880657] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:15:43,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98206463] [2024-10-24 01:15:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:43,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:15:43,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:15:43,728 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) [2024-10-24 01:15:43,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 01:15:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:43,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 01:15:43,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:15:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-24 01:15:43,901 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 01:15:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98206463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:43,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 01:15:43,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 01:15:43,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888498059] [2024-10-24 01:15:43,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:43,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:15:43,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:43,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:15:43,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:43,903 INFO L87 Difference]: Start difference. First operand 32439 states and 50657 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 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) [2024-10-24 01:15:47,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:47,327 INFO L93 Difference]: Finished difference Result 96700 states and 152047 transitions. [2024-10-24 01:15:47,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:15:47,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 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 147 [2024-10-24 01:15:47,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:47,545 INFO L225 Difference]: With dead ends: 96700 [2024-10-24 01:15:47,545 INFO L226 Difference]: Without dead ends: 64273 [2024-10-24 01:15:47,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:47,639 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 246 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:47,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 523 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:15:47,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64273 states. [2024-10-24 01:15:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64273 to 64073. [2024-10-24 01:15:51,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64073 states, 56738 states have (on average 1.5262434347350982) internal successors, (86596), 57256 states have internal predecessors, (86596), 4598 states have call successors, (4598), 2353 states have call predecessors, (4598), 2736 states have return successors, (8555), 4527 states have call predecessors, (8555), 4596 states have call successors, (8555) [2024-10-24 01:15:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64073 states to 64073 states and 99749 transitions. [2024-10-24 01:15:52,150 INFO L78 Accepts]: Start accepts. Automaton has 64073 states and 99749 transitions. Word has length 147 [2024-10-24 01:15:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:15:52,150 INFO L471 AbstractCegarLoop]: Abstraction has 64073 states and 99749 transitions. [2024-10-24 01:15:52,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 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) [2024-10-24 01:15:52,151 INFO L276 IsEmpty]: Start isEmpty. Operand 64073 states and 99749 transitions. [2024-10-24 01:15:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-24 01:15:52,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:15:52,220 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:15:52,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 01:15:52,424 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,SelfDestructingSolverStorable13 [2024-10-24 01:15:52,425 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:15:52,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:15:52,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1804761458, now seen corresponding path program 1 times [2024-10-24 01:15:52,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:15:52,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959672006] [2024-10-24 01:15:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:52,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:15:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:52,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:15:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:52,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 01:15:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:52,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 01:15:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:52,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 01:15:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:52,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 01:15:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:52,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 01:15:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:52,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 01:15:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:52,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-24 01:15:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 01:15:52,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:15:52,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959672006] [2024-10-24 01:15:52,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959672006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:15:52,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597489991] [2024-10-24 01:15:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:15:52,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:15:52,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:15:52,541 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) [2024-10-24 01:15:52,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 01:15:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:15:52,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 01:15:52,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:15:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 01:15:52,683 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 01:15:52,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597489991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:15:52,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 01:15:52,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 01:15:52,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506033050] [2024-10-24 01:15:52,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:15:52,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:15:52,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:15:52,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:15:52,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:52,684 INFO L87 Difference]: Start difference. First operand 64073 states and 99749 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 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) [2024-10-24 01:15:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:15:59,225 INFO L93 Difference]: Finished difference Result 191010 states and 299405 transitions. [2024-10-24 01:15:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:15:59,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 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 147 [2024-10-24 01:15:59,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:15:59,806 INFO L225 Difference]: With dead ends: 191010 [2024-10-24 01:15:59,806 INFO L226 Difference]: Without dead ends: 126949 [2024-10-24 01:15:59,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:15:59,930 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 236 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:15:59,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 523 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:15:59,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126949 states.