/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:35:05,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:35:05,468 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:35:05,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:35:05,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:35:05,495 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:35:05,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:35:05,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:35:05,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:35:05,502 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:35:05,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:35:05,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:35:05,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:35:05,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:35:05,504 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:35:05,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:35:05,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:35:05,505 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:35:05,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:35:05,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:35:05,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:35:05,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:35:05,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:35:05,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:35:05,507 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:35:05,507 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:35:05,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:35:05,507 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:35:05,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:35:05,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:35:05,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:35:05,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:35:05,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:35:05,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:35:05,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:35:05,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:35:05,509 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:35:05,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:35:05,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:35:05,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:35:05,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:35:05,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:35:05,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:35:05,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:35:05,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:35:05,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:35:05,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:35:05,751 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:35:05,751 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:35:05,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.04.cil-2.c [2023-12-16 00:35:06,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:35:07,399 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:35:07,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.04.cil-2.c [2023-12-16 00:35:07,446 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4b44cf6/ce322a408b2248dcbe98429162f63873/FLAG44220ebe3 [2023-12-16 00:35:07,458 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4b44cf6/ce322a408b2248dcbe98429162f63873 [2023-12-16 00:35:07,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:35:07,461 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:35:07,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:35:07,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:35:07,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:35:07,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:35:07" (1/1) ... [2023-12-16 00:35:07,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc203fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:07, skipping insertion in model container [2023-12-16 00:35:07,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:35:07" (1/1) ... [2023-12-16 00:35:07,616 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:35:08,990 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.04.cil-2.c[381679,381692] [2023-12-16 00:35:09,010 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.04.cil-2.c[383339,383352] [2023-12-16 00:35:09,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:35:09,144 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:35:09,735 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.04.cil-2.c[381679,381692] [2023-12-16 00:35:09,741 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.04.cil-2.c[383339,383352] [2023-12-16 00:35:09,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:35:09,813 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:35:09,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09 WrapperNode [2023-12-16 00:35:09,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:35:09,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:35:09,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:35:09,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:35:09,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:09,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:10,236 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12759 [2023-12-16 00:35:10,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:35:10,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:35:10,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:35:10,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:35:10,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:10,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:10,365 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:10,445 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]. [2023-12-16 00:35:10,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:10,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:10,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:10,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:10,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:10,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:10,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:35:10,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:35:10,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:35:10,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:35:10,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (1/1) ... [2023-12-16 00:35:10,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:35:10,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:10,887 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) [2023-12-16 00:35:10,918 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 [2023-12-16 00:35:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:35:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-16 00:35:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-16 00:35:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 00:35:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 00:35:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-16 00:35:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-16 00:35:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-16 00:35:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-16 00:35:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-16 00:35:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-16 00:35:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-16 00:35:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-16 00:35:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-16 00:35:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-16 00:35:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:35:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:35:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:35:11,083 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:35:11,101 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:35:16,816 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:35:16,892 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:35:16,892 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-16 00:35:16,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:35:16 BoogieIcfgContainer [2023-12-16 00:35:16,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:35:16,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:35:16,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:35:16,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:35:16,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:35:07" (1/3) ... [2023-12-16 00:35:16,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e686197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:35:16, skipping insertion in model container [2023-12-16 00:35:16,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:35:09" (2/3) ... [2023-12-16 00:35:16,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e686197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:35:16, skipping insertion in model container [2023-12-16 00:35:16,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:35:16" (3/3) ... [2023-12-16 00:35:16,914 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.04.cil-2.c [2023-12-16 00:35:16,925 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:35:16,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:35:17,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:35:17,087 INFO L357 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, mHoare=true, 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;@10bdbad0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:35:17,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:35:17,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 2295 states, 2265 states have (on average 1.8838852097130243) internal successors, (4267), 2270 states have internal predecessors, (4267), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 00:35:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:35:17,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:17,122 INFO L195 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] [2023-12-16 00:35:17,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:17,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:17,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1308670140, now seen corresponding path program 1 times [2023-12-16 00:35:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:17,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467618253] [2023-12-16 00:35:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:17,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:17,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467618253] [2023-12-16 00:35:17,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467618253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:17,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:17,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:35:17,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001553229] [2023-12-16 00:35:17,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:17,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:35:17,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:17,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:35:17,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:35:17,469 INFO L87 Difference]: Start difference. First operand has 2295 states, 2265 states have (on average 1.8838852097130243) internal successors, (4267), 2270 states have internal predecessors, (4267), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:18,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:18,152 INFO L93 Difference]: Finished difference Result 4635 states and 8694 transitions. [2023-12-16 00:35:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:35:18,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-16 00:35:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:18,182 INFO L225 Difference]: With dead ends: 4635 [2023-12-16 00:35:18,182 INFO L226 Difference]: Without dead ends: 2340 [2023-12-16 00:35:18,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:35:18,192 INFO L413 NwaCegarLoop]: 4116 mSDtfsCounter, 425 mSDsluCounter, 12046 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 16162 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:18,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 16162 Invalid, 491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 00:35:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2023-12-16 00:35:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 2290. [2023-12-16 00:35:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2290 states, 2262 states have (on average 1.8492484526967286) internal successors, (4183), 2265 states have internal predecessors, (4183), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 00:35:18,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 4221 transitions. [2023-12-16 00:35:18,277 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 4221 transitions. Word has length 82 [2023-12-16 00:35:18,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:18,278 INFO L495 AbstractCegarLoop]: Abstraction has 2290 states and 4221 transitions. [2023-12-16 00:35:18,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:18,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 4221 transitions. [2023-12-16 00:35:18,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:35:18,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:18,281 INFO L195 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] [2023-12-16 00:35:18,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:35:18,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:18,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash -425434310, now seen corresponding path program 1 times [2023-12-16 00:35:18,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:18,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327305335] [2023-12-16 00:35:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:18,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:18,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:18,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:18,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:18,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:18,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:18,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327305335] [2023-12-16 00:35:18,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327305335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:18,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:18,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:35:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121403117] [2023-12-16 00:35:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:18,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:35:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:18,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:35:18,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:35:18,444 INFO L87 Difference]: Start difference. First operand 2290 states and 4221 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-16 00:35:19,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:19,434 INFO L93 Difference]: Finished difference Result 2711 states and 4899 transitions. [2023-12-16 00:35:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:35:19,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-16 00:35:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:19,443 INFO L225 Difference]: With dead ends: 2711 [2023-12-16 00:35:19,443 INFO L226 Difference]: Without dead ends: 2552 [2023-12-16 00:35:19,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:35:19,446 INFO L413 NwaCegarLoop]: 4097 mSDtfsCounter, 4578 mSDsluCounter, 12271 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 16368 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:19,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 16368 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:35:19,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2023-12-16 00:35:19,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2451. [2023-12-16 00:35:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 2403 states have (on average 1.834789846025801) internal successors, (4409), 2407 states have internal predecessors, (4409), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-12-16 00:35:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 4476 transitions. [2023-12-16 00:35:19,495 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 4476 transitions. Word has length 82 [2023-12-16 00:35:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:19,496 INFO L495 AbstractCegarLoop]: Abstraction has 2451 states and 4476 transitions. [2023-12-16 00:35:19,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-16 00:35:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 4476 transitions. [2023-12-16 00:35:19,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:35:19,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:19,498 INFO L195 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] [2023-12-16 00:35:19,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:35:19,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:19,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1427533574, now seen corresponding path program 1 times [2023-12-16 00:35:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:19,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726543847] [2023-12-16 00:35:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:19,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:19,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:19,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:19,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726543847] [2023-12-16 00:35:19,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726543847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:19,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:19,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:19,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911384179] [2023-12-16 00:35:19,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:19,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:19,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:19,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:19,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:19,629 INFO L87 Difference]: Start difference. First operand 2451 states and 4476 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:20,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:20,780 INFO L93 Difference]: Finished difference Result 3086 states and 5493 transitions. [2023-12-16 00:35:20,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:35:20,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-16 00:35:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:20,790 INFO L225 Difference]: With dead ends: 3086 [2023-12-16 00:35:20,790 INFO L226 Difference]: Without dead ends: 2766 [2023-12-16 00:35:20,792 INFO L412 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 [2023-12-16 00:35:20,793 INFO L413 NwaCegarLoop]: 4202 mSDtfsCounter, 4581 mSDsluCounter, 16604 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4592 SdHoareTripleChecker+Valid, 20806 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:20,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4592 Valid, 20806 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:35:20,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2023-12-16 00:35:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2601. [2023-12-16 00:35:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 2533 states have (on average 1.8211606790367154) internal successors, (4613), 2538 states have internal predecessors, (4613), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-12-16 00:35:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 4708 transitions. [2023-12-16 00:35:20,958 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 4708 transitions. Word has length 82 [2023-12-16 00:35:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:20,959 INFO L495 AbstractCegarLoop]: Abstraction has 2601 states and 4708 transitions. [2023-12-16 00:35:20,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 4708 transitions. [2023-12-16 00:35:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:35:20,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:20,960 INFO L195 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] [2023-12-16 00:35:20,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:35:20,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:20,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash -473593416, now seen corresponding path program 1 times [2023-12-16 00:35:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:20,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60083058] [2023-12-16 00:35:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:20,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:21,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:21,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60083058] [2023-12-16 00:35:21,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60083058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:21,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:21,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:21,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864593582] [2023-12-16 00:35:21,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:21,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:21,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:21,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:21,102 INFO L87 Difference]: Start difference. First operand 2601 states and 4708 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:22,224 INFO L93 Difference]: Finished difference Result 3635 states and 6361 transitions. [2023-12-16 00:35:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:35:22,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-16 00:35:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:22,236 INFO L225 Difference]: With dead ends: 3635 [2023-12-16 00:35:22,237 INFO L226 Difference]: Without dead ends: 3165 [2023-12-16 00:35:22,240 INFO L412 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 [2023-12-16 00:35:22,245 INFO L413 NwaCegarLoop]: 4106 mSDtfsCounter, 4629 mSDsluCounter, 16349 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4640 SdHoareTripleChecker+Valid, 20455 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:22,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4640 Valid, 20455 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:35:22,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2023-12-16 00:35:22,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 2902. [2023-12-16 00:35:22,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2794 states have (on average 1.7974230493915533) internal successors, (5022), 2801 states have internal predecessors, (5022), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-16 00:35:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 5177 transitions. [2023-12-16 00:35:22,338 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 5177 transitions. Word has length 82 [2023-12-16 00:35:22,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:22,338 INFO L495 AbstractCegarLoop]: Abstraction has 2902 states and 5177 transitions. [2023-12-16 00:35:22,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 5177 transitions. [2023-12-16 00:35:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:35:22,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:22,342 INFO L195 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] [2023-12-16 00:35:22,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:35:22,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:22,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:22,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1689747142, now seen corresponding path program 1 times [2023-12-16 00:35:22,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:22,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623673327] [2023-12-16 00:35:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:22,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:22,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:22,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:22,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:22,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:22,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:22,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623673327] [2023-12-16 00:35:22,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623673327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:22,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:22,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:22,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588176716] [2023-12-16 00:35:22,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:22,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:22,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:22,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:22,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:22,487 INFO L87 Difference]: Start difference. First operand 2902 states and 5177 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:23,177 INFO L93 Difference]: Finished difference Result 3924 states and 6821 transitions. [2023-12-16 00:35:23,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:35:23,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-16 00:35:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:23,189 INFO L225 Difference]: With dead ends: 3924 [2023-12-16 00:35:23,189 INFO L226 Difference]: Without dead ends: 3153 [2023-12-16 00:35:23,194 INFO L412 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 [2023-12-16 00:35:23,196 INFO L413 NwaCegarLoop]: 4084 mSDtfsCounter, 4430 mSDsluCounter, 16208 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4442 SdHoareTripleChecker+Valid, 20292 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:23,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4442 Valid, 20292 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:35:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2023-12-16 00:35:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2902. [2023-12-16 00:35:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2794 states have (on average 1.7956335003579098) internal successors, (5017), 2801 states have internal predecessors, (5017), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-16 00:35:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 5172 transitions. [2023-12-16 00:35:23,279 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 5172 transitions. Word has length 82 [2023-12-16 00:35:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:23,279 INFO L495 AbstractCegarLoop]: Abstraction has 2902 states and 5172 transitions. [2023-12-16 00:35:23,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 5172 transitions. [2023-12-16 00:35:23,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:35:23,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:23,282 INFO L195 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] [2023-12-16 00:35:23,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:35:23,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:23,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:23,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1873252728, now seen corresponding path program 1 times [2023-12-16 00:35:23,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:23,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577788507] [2023-12-16 00:35:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:23,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:23,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:23,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:23,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577788507] [2023-12-16 00:35:23,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577788507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:23,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:23,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:23,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378440352] [2023-12-16 00:35:23,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:23,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:23,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:23,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:23,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:23,418 INFO L87 Difference]: Start difference. First operand 2902 states and 5172 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:24,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:24,754 INFO L93 Difference]: Finished difference Result 4905 states and 8338 transitions. [2023-12-16 00:35:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:35:24,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-16 00:35:24,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:24,769 INFO L225 Difference]: With dead ends: 4905 [2023-12-16 00:35:24,770 INFO L226 Difference]: Without dead ends: 4134 [2023-12-16 00:35:24,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:35:24,774 INFO L413 NwaCegarLoop]: 4198 mSDtfsCounter, 4725 mSDsluCounter, 16599 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4741 SdHoareTripleChecker+Valid, 20797 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:24,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4741 Valid, 20797 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:35:24,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2023-12-16 00:35:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3506. [2023-12-16 00:35:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3506 states, 3322 states have (on average 1.7585791691751957) internal successors, (5842), 3333 states have internal predecessors, (5842), 120 states have call successors, (120), 55 states have call predecessors, (120), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2023-12-16 00:35:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 6115 transitions. [2023-12-16 00:35:24,893 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 6115 transitions. Word has length 82 [2023-12-16 00:35:24,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:24,893 INFO L495 AbstractCegarLoop]: Abstraction has 3506 states and 6115 transitions. [2023-12-16 00:35:24,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:24,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 6115 transitions. [2023-12-16 00:35:24,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:35:24,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:24,896 INFO L195 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] [2023-12-16 00:35:24,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:35:24,896 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:24,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:24,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1818859830, now seen corresponding path program 1 times [2023-12-16 00:35:24,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:24,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986108872] [2023-12-16 00:35:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:24,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:25,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:25,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:25,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:25,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986108872] [2023-12-16 00:35:25,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986108872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:25,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:25,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:25,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783392516] [2023-12-16 00:35:25,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:25,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:25,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:25,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:25,114 INFO L87 Difference]: Start difference. First operand 3506 states and 6115 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:26,388 INFO L93 Difference]: Finished difference Result 7133 states and 11845 transitions. [2023-12-16 00:35:26,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:35:26,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-16 00:35:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:26,410 INFO L225 Difference]: With dead ends: 7133 [2023-12-16 00:35:26,410 INFO L226 Difference]: Without dead ends: 5758 [2023-12-16 00:35:26,416 INFO L412 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 [2023-12-16 00:35:26,417 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 4598 mSDsluCounter, 16596 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 20793 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:26,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4608 Valid, 20793 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 00:35:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2023-12-16 00:35:26,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 4629. [2023-12-16 00:35:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4297 states have (on average 1.7095648126599954) internal successors, (7346), 4316 states have internal predecessors, (7346), 212 states have call successors, (212), 103 states have call predecessors, (212), 118 states have return successors, (307), 225 states have call predecessors, (307), 210 states have call successors, (307) [2023-12-16 00:35:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7865 transitions. [2023-12-16 00:35:26,541 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7865 transitions. Word has length 82 [2023-12-16 00:35:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:26,541 INFO L495 AbstractCegarLoop]: Abstraction has 4629 states and 7865 transitions. [2023-12-16 00:35:26,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7865 transitions. [2023-12-16 00:35:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:35:26,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:26,543 INFO L195 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] [2023-12-16 00:35:26,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:35:26,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:26,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:26,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1401463224, now seen corresponding path program 1 times [2023-12-16 00:35:26,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:26,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027890772] [2023-12-16 00:35:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:26,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:26,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:26,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:26,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:26,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:26,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:26,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:26,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027890772] [2023-12-16 00:35:26,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027890772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:26,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:26,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:26,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774784903] [2023-12-16 00:35:26,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:26,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:26,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:26,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:26,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:26,629 INFO L87 Difference]: Start difference. First operand 4629 states and 7865 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:27,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:27,978 INFO L93 Difference]: Finished difference Result 11234 states and 18285 transitions. [2023-12-16 00:35:27,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:35:27,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-16 00:35:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:28,006 INFO L225 Difference]: With dead ends: 11234 [2023-12-16 00:35:28,007 INFO L226 Difference]: Without dead ends: 8736 [2023-12-16 00:35:28,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:35:28,017 INFO L413 NwaCegarLoop]: 4198 mSDtfsCounter, 4653 mSDsluCounter, 16599 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 20797 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:28,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 20797 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:35:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8736 states. [2023-12-16 00:35:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8736 to 6954. [2023-12-16 00:35:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6954 states, 6334 states have (on average 1.6596147773918535) internal successors, (10512), 6369 states have internal predecessors, (10512), 388 states have call successors, (388), 199 states have call predecessors, (388), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-12-16 00:35:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6954 states to 6954 states and 11561 transitions. [2023-12-16 00:35:28,240 INFO L78 Accepts]: Start accepts. Automaton has 6954 states and 11561 transitions. Word has length 82 [2023-12-16 00:35:28,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:28,240 INFO L495 AbstractCegarLoop]: Abstraction has 6954 states and 11561 transitions. [2023-12-16 00:35:28,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 6954 states and 11561 transitions. [2023-12-16 00:35:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:35:28,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:28,244 INFO L195 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] [2023-12-16 00:35:28,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:35:28,245 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:28,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:28,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2080735478, now seen corresponding path program 1 times [2023-12-16 00:35:28,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:28,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463714587] [2023-12-16 00:35:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:28,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:28,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:28,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:28,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:28,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:28,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463714587] [2023-12-16 00:35:28,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463714587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:28,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:28,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:28,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035594416] [2023-12-16 00:35:28,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:28,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:28,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:28,334 INFO L87 Difference]: Start difference. First operand 6954 states and 11561 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:29,722 INFO L93 Difference]: Finished difference Result 19421 states and 31383 transitions. [2023-12-16 00:35:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:35:29,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-16 00:35:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:29,775 INFO L225 Difference]: With dead ends: 19421 [2023-12-16 00:35:29,775 INFO L226 Difference]: Without dead ends: 14598 [2023-12-16 00:35:29,794 INFO L412 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 [2023-12-16 00:35:29,794 INFO L413 NwaCegarLoop]: 4198 mSDtfsCounter, 4617 mSDsluCounter, 16599 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 20797 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:29,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4633 Valid, 20797 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:35:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14598 states. [2023-12-16 00:35:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14598 to 11603. [2023-12-16 00:35:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11603 states, 10423 states have (on average 1.618919696824331) internal successors, (16874), 10490 states have internal predecessors, (16874), 724 states have call successors, (724), 391 states have call predecessors, (724), 454 states have return successors, (1515), 785 states have call predecessors, (1515), 722 states have call successors, (1515) [2023-12-16 00:35:30,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11603 states to 11603 states and 19113 transitions. [2023-12-16 00:35:30,156 INFO L78 Accepts]: Start accepts. Automaton has 11603 states and 19113 transitions. Word has length 82 [2023-12-16 00:35:30,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:30,156 INFO L495 AbstractCegarLoop]: Abstraction has 11603 states and 19113 transitions. [2023-12-16 00:35:30,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:30,156 INFO L276 IsEmpty]: Start isEmpty. Operand 11603 states and 19113 transitions. [2023-12-16 00:35:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:35:30,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:30,168 INFO L195 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] [2023-12-16 00:35:30,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:35:30,168 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:30,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:30,168 INFO L85 PathProgramCache]: Analyzing trace with hash -252657160, now seen corresponding path program 1 times [2023-12-16 00:35:30,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:30,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774686268] [2023-12-16 00:35:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:30,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:30,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:30,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:30,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:30,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:30,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:30,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:30,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774686268] [2023-12-16 00:35:30,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774686268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:30,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:30,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:30,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745338819] [2023-12-16 00:35:30,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:30,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:30,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:30,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:30,275 INFO L87 Difference]: Start difference. First operand 11603 states and 19113 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:32,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:32,044 INFO L93 Difference]: Finished difference Result 35280 states and 57361 transitions. [2023-12-16 00:35:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:35:32,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 82 [2023-12-16 00:35:32,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:32,163 INFO L225 Difference]: With dead ends: 35280 [2023-12-16 00:35:32,163 INFO L226 Difference]: Without dead ends: 25808 [2023-12-16 00:35:32,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:35:32,196 INFO L413 NwaCegarLoop]: 4188 mSDtfsCounter, 4566 mSDsluCounter, 16587 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4576 SdHoareTripleChecker+Valid, 20775 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:32,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4576 Valid, 20775 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 00:35:32,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25808 states. [2023-12-16 00:35:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25808 to 20888. [2023-12-16 00:35:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20888 states, 18628 states have (on average 1.5920120249087395) internal successors, (29656), 18759 states have internal predecessors, (29656), 1360 states have call successors, (1360), 771 states have call predecessors, (1360), 898 states have return successors, (3673), 1485 states have call predecessors, (3673), 1358 states have call successors, (3673) [2023-12-16 00:35:32,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20888 states to 20888 states and 34689 transitions. [2023-12-16 00:35:32,892 INFO L78 Accepts]: Start accepts. Automaton has 20888 states and 34689 transitions. Word has length 82 [2023-12-16 00:35:32,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:32,892 INFO L495 AbstractCegarLoop]: Abstraction has 20888 states and 34689 transitions. [2023-12-16 00:35:32,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-16 00:35:32,892 INFO L276 IsEmpty]: Start isEmpty. Operand 20888 states and 34689 transitions. [2023-12-16 00:35:32,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:35:32,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:32,906 INFO L195 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] [2023-12-16 00:35:32,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:35:32,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:32,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:32,906 INFO L85 PathProgramCache]: Analyzing trace with hash -50833226, now seen corresponding path program 1 times [2023-12-16 00:35:32,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:32,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438752491] [2023-12-16 00:35:32,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:32,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:32,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:32,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:32,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438752491] [2023-12-16 00:35:32,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438752491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:32,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:32,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:35:32,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095874167] [2023-12-16 00:35:32,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:32,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:35:32,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:35:32,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:35:32,988 INFO L87 Difference]: Start difference. First operand 20888 states and 34689 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-16 00:35:34,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:34,709 INFO L93 Difference]: Finished difference Result 54910 states and 89680 transitions. [2023-12-16 00:35:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:35:34,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 82 [2023-12-16 00:35:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:34,815 INFO L225 Difference]: With dead ends: 54910 [2023-12-16 00:35:34,815 INFO L226 Difference]: Without dead ends: 36154 [2023-12-16 00:35:34,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 00:35:34,865 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 4757 mSDsluCounter, 12336 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 16560 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:34,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4786 Valid, 16560 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:35:34,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36154 states. [2023-12-16 00:35:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36154 to 30017. [2023-12-16 00:35:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30017 states, 26585 states have (on average 1.5682527741207448) internal successors, (41692), 26845 states have internal predecessors, (41692), 2078 states have call successors, (2078), 1161 states have call predecessors, (2078), 1352 states have return successors, (5121), 2138 states have call predecessors, (5121), 2076 states have call successors, (5121) [2023-12-16 00:35:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30017 states to 30017 states and 48891 transitions. [2023-12-16 00:35:36,005 INFO L78 Accepts]: Start accepts. Automaton has 30017 states and 48891 transitions. Word has length 82 [2023-12-16 00:35:36,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:36,005 INFO L495 AbstractCegarLoop]: Abstraction has 30017 states and 48891 transitions. [2023-12-16 00:35:36,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-16 00:35:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 30017 states and 48891 transitions. [2023-12-16 00:35:36,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-16 00:35:36,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:36,064 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:35:36,064 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:36,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:36,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1489308341, now seen corresponding path program 1 times [2023-12-16 00:35:36,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:36,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911079214] [2023-12-16 00:35:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:36,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:36,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 00:35:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:36,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:36,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 00:35:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:35:36,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911079214] [2023-12-16 00:35:36,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911079214] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053788326] [2023-12-16 00:35:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:36,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:36,531 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) [2023-12-16 00:35:36,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:35:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:36,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:35:36,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 00:35:36,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:36,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053788326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:36,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:36,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:35:36,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860541852] [2023-12-16 00:35:36,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:36,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:36,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:36,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:36,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:36,740 INFO L87 Difference]: Start difference. First operand 30017 states and 48891 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2023-12-16 00:35:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:38,335 INFO L93 Difference]: Finished difference Result 85190 states and 138511 transitions. [2023-12-16 00:35:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:38,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 132 [2023-12-16 00:35:38,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:38,653 INFO L225 Difference]: With dead ends: 85190 [2023-12-16 00:35:38,653 INFO L226 Difference]: Without dead ends: 57305 [2023-12-16 00:35:38,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:38,695 INFO L413 NwaCegarLoop]: 4196 mSDtfsCounter, 4169 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4169 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:38,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4169 Valid, 4415 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57305 states. [2023-12-16 00:35:40,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57305 to 57107. [2023-12-16 00:35:40,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57107 states, 50357 states have (on average 1.5518597215878627) internal successors, (78147), 50874 states have internal predecessors, (78147), 4048 states have call successors, (4048), 2317 states have call predecessors, (4048), 2700 states have return successors, (10009), 4043 states have call predecessors, (10009), 4046 states have call successors, (10009) [2023-12-16 00:35:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57107 states to 57107 states and 92204 transitions. [2023-12-16 00:35:40,786 INFO L78 Accepts]: Start accepts. Automaton has 57107 states and 92204 transitions. Word has length 132 [2023-12-16 00:35:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:40,787 INFO L495 AbstractCegarLoop]: Abstraction has 57107 states and 92204 transitions. [2023-12-16 00:35:40,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2023-12-16 00:35:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 57107 states and 92204 transitions. [2023-12-16 00:35:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-16 00:35:40,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:40,876 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:40,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 00:35:41,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 00:35:41,081 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:41,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1791656555, now seen corresponding path program 1 times [2023-12-16 00:35:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707196854] [2023-12-16 00:35:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 00:35:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 00:35:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:35:41,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:41,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707196854] [2023-12-16 00:35:41,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707196854] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:41,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302423525] [2023-12-16 00:35:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:41,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:41,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:41,188 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) [2023-12-16 00:35:41,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:35:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:35:41,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 00:35:41,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:41,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302423525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:41,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:41,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:35:41,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506739808] [2023-12-16 00:35:41,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:41,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:41,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:41,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:41,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:41,351 INFO L87 Difference]: Start difference. First operand 57107 states and 92204 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2023-12-16 00:35:44,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:44,888 INFO L93 Difference]: Finished difference Result 165852 states and 268250 transitions. [2023-12-16 00:35:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:44,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 132 [2023-12-16 00:35:44,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:45,429 INFO L225 Difference]: With dead ends: 165852 [2023-12-16 00:35:45,429 INFO L226 Difference]: Without dead ends: 110877 [2023-12-16 00:35:45,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:45,533 INFO L413 NwaCegarLoop]: 4196 mSDtfsCounter, 4174 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4174 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:45,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4174 Valid, 4415 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:45,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110877 states. [2023-12-16 00:35:49,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110877 to 110485. [2023-12-16 00:35:49,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110485 states, 97213 states have (on average 1.5408124427802865) internal successors, (149787), 98244 states have internal predecessors, (149787), 7882 states have call successors, (7882), 4621 states have call predecessors, (7882), 5388 states have return successors, (19679), 7747 states have call predecessors, (19679), 7880 states have call successors, (19679) [2023-12-16 00:35:50,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110485 states to 110485 states and 177348 transitions. [2023-12-16 00:35:50,485 INFO L78 Accepts]: Start accepts. Automaton has 110485 states and 177348 transitions. Word has length 132 [2023-12-16 00:35:50,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:50,485 INFO L495 AbstractCegarLoop]: Abstraction has 110485 states and 177348 transitions. [2023-12-16 00:35:50,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2023-12-16 00:35:50,485 INFO L276 IsEmpty]: Start isEmpty. Operand 110485 states and 177348 transitions. [2023-12-16 00:35:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-16 00:35:50,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:50,633 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:50,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:35:50,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 00:35:50,839 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:50,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1518741835, now seen corresponding path program 1 times [2023-12-16 00:35:50,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:50,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891866950] [2023-12-16 00:35:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:50,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 00:35:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 00:35:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 00:35:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 00:35:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 00:35:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:35:50,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:50,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891866950] [2023-12-16 00:35:50,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891866950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:50,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985668032] [2023-12-16 00:35:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:50,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:50,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:50,960 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) [2023-12-16 00:35:50,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:35:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:51,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:35:51,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-16 00:35:51,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:51,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985668032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:51,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:51,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:51,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511759947] [2023-12-16 00:35:51,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:51,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:51,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:51,429 INFO L87 Difference]: Start difference. First operand 110485 states and 177348 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 00:35:58,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:58,055 INFO L93 Difference]: Finished difference Result 321785 states and 520405 transitions. [2023-12-16 00:35:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:58,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 132 [2023-12-16 00:35:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:59,036 INFO L225 Difference]: With dead ends: 321785 [2023-12-16 00:35:59,036 INFO L226 Difference]: Without dead ends: 213433 [2023-12-16 00:35:59,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:59,404 INFO L413 NwaCegarLoop]: 4406 mSDtfsCounter, 219 mSDsluCounter, 4197 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 8603 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:59,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 8603 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:59,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213433 states. Received shutdown request... [2023-12-16 00:36:02,771 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:36:02,771 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:36:03,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 00:36:03,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2023-12-16 00:36:07,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213433 to 213433. [2023-12-16 00:36:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213433 states, 187558 states have (on average 1.5286951236417534) internal successors, (286719), 189358 states have internal predecessors, (286719), 15169 states have call successors, (15169), 9169 states have call predecessors, (15169), 10704 states have return successors, (41394), 15161 states have call predecessors, (41394), 15167 states have call successors, (41394) [2023-12-16 00:36:07,672 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:36:07,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 00:36:07,674 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-16 00:36:07,675 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:36:07,678 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:36:07,681 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:36:07,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:36:07 BoogieIcfgContainer [2023-12-16 00:36:07,685 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:36:07,685 INFO L158 Benchmark]: Toolchain (without parser) took 60223.81ms. Allocated memory was 363.9MB in the beginning and 7.8GB in the end (delta: 7.4GB). Free memory was 277.1MB in the beginning and 5.5GB in the end (delta: -5.2GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2023-12-16 00:36:07,685 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 183.5MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:36:07,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2350.82ms. Allocated memory was 363.9MB in the beginning and 577.8MB in the end (delta: 213.9MB). Free memory was 277.1MB in the beginning and 418.1MB in the end (delta: -141.0MB). Peak memory consumption was 126.9MB. Max. memory is 8.0GB. [2023-12-16 00:36:07,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 422.25ms. Allocated memory is still 577.8MB. Free memory was 418.1MB in the beginning and 444.4MB in the end (delta: -26.2MB). Peak memory consumption was 128.5MB. Max. memory is 8.0GB. [2023-12-16 00:36:07,695 INFO L158 Benchmark]: Boogie Preprocessor took 613.01ms. Allocated memory is still 577.8MB. Free memory was 444.4MB in the beginning and 412.9MB in the end (delta: 31.5MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. [2023-12-16 00:36:07,706 INFO L158 Benchmark]: RCFGBuilder took 6051.85ms. Allocated memory was 577.8MB in the beginning and 1.6GB in the end (delta: 1.0GB). Free memory was 412.9MB in the beginning and 1.3GB in the end (delta: -929.5MB). Peak memory consumption was 314.6MB. Max. memory is 8.0GB. [2023-12-16 00:36:07,707 INFO L158 Benchmark]: TraceAbstraction took 50775.22ms. Allocated memory was 1.6GB in the beginning and 7.8GB in the end (delta: 6.1GB). Free memory was 1.3GB in the beginning and 5.5GB in the end (delta: -4.2GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-16 00:36:07,715 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 183.5MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2350.82ms. Allocated memory was 363.9MB in the beginning and 577.8MB in the end (delta: 213.9MB). Free memory was 277.1MB in the beginning and 418.1MB in the end (delta: -141.0MB). Peak memory consumption was 126.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 422.25ms. Allocated memory is still 577.8MB. Free memory was 418.1MB in the beginning and 444.4MB in the end (delta: -26.2MB). Peak memory consumption was 128.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 613.01ms. Allocated memory is still 577.8MB. Free memory was 444.4MB in the beginning and 412.9MB in the end (delta: 31.5MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. * RCFGBuilder took 6051.85ms. Allocated memory was 577.8MB in the beginning and 1.6GB in the end (delta: 1.0GB). Free memory was 412.9MB in the beginning and 1.3GB in the end (delta: -929.5MB). Peak memory consumption was 314.6MB. Max. memory is 8.0GB. * TraceAbstraction took 50775.22ms. Allocated memory was 1.6GB in the beginning and 7.8GB in the end (delta: 6.1GB). Free memory was 1.3GB in the beginning and 5.5GB in the end (delta: -4.2GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 11118]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11118). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 2295 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 50.7s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 28.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55279 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 55121 mSDsluCounter, 232035 SdHoareTripleChecker+Invalid, 7.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 173429 mSDsCounter, 665 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14122 IncrementalHoareTripleChecker+Invalid, 14787 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 665 mSolverCounterUnsat, 58606 mSDtfsCounter, 14122 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 744 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110485occurred in iteration=13, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 18.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 19011 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1694 NumberOfCodeBlocks, 1694 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1677 ConstructedInterpolants, 0 QuantifiedInterpolants, 3704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1689 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 156/228 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown !ENTRY org.eclipse.osgi 4 0 2023-12-16 00:36:07.972 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4b44cf6/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438)