/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.05.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:24:28,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:24:28,124 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 11:24:28,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:24:28,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:24:28,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:24:28,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:24:28,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:24:28,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:24:28,153 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:24:28,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:24:28,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:24:28,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:24:28,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:24:28,155 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:24:28,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:24:28,156 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:24:28,156 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:24:28,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:24:28,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:24:28,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:24:28,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:24:28,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:24:28,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:24:28,158 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:24:28,158 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:24:28,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:24:28,158 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:24:28,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:24:28,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:24:28,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:24:28,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:24:28,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:24:28,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:24:28,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:24:28,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:24:28,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:24:28,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:24:28,161 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:24:28,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:24:28,161 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:24:28,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:24:28,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:24:28,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:24:28,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:24:28,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:24:28,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:24:28,379 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:24:28,379 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:24:28,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.05.cil-2.c [2023-12-20 11:24:29,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:24:29,799 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:24:29,800 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.05.cil-2.c [2023-12-20 11:24:29,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d39b001/b758d3a24fef44ffb15a311b18f00c9e/FLAGbbb3f51d1 [2023-12-20 11:24:29,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d39b001/b758d3a24fef44ffb15a311b18f00c9e [2023-12-20 11:24:29,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:24:29,871 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:24:29,873 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:24:29,873 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:24:29,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:24:29,876 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:24:29" (1/1) ... [2023-12-20 11:24:29,877 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bb05b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:29, skipping insertion in model container [2023-12-20 11:24:29,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:24:29" (1/1) ... [2023-12-20 11:24:30,020 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:24:31,378 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.05.cil-2.c[381679,381692] [2023-12-20 11:24:31,396 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.05.cil-2.c[383339,383352] [2023-12-20 11:24:31,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:24:31,567 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:24:32,119 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.05.cil-2.c[381679,381692] [2023-12-20 11:24:32,122 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.05.cil-2.c[383339,383352] [2023-12-20 11:24:32,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:24:32,185 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:24:32,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32 WrapperNode [2023-12-20 11:24:32,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:24:32,186 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:24:32,186 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:24:32,186 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:24:32,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:32,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:32,635 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12819 [2023-12-20 11:24:32,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:24:32,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:24:32,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:24:32,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:24:32,645 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:32,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:32,709 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:32,773 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]. [2023-12-20 11:24:32,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:32,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:32,964 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:33,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:33,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:33,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:33,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:24:33,094 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:24:33,094 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:24:33,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:24:33,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (1/1) ... [2023-12-20 11:24:33,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:24:33,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:24:33,116 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) [2023-12-20 11:24:33,135 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 [2023-12-20 11:24:33,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:24:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:24:33,140 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:24:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:24:33,141 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:24:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:24:33,141 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:24:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 11:24:33,141 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 11:24:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:24:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:24:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:24:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:24:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:24:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:24:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:24:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:24:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:24:33,215 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:24:33,217 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:24:38,755 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:24:38,849 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:24:38,850 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-20 11:24:38,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:24:38 BoogieIcfgContainer [2023-12-20 11:24:38,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:24:38,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:24:38,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:24:38,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:24:38,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:24:29" (1/3) ... [2023-12-20 11:24:38,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f56f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:24:38, skipping insertion in model container [2023-12-20 11:24:38,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:24:32" (2/3) ... [2023-12-20 11:24:38,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f56f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:24:38, skipping insertion in model container [2023-12-20 11:24:38,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:24:38" (3/3) ... [2023-12-20 11:24:38,929 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.05.cil-2.c [2023-12-20 11:24:38,946 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:24:38,946 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:24:39,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:24:39,010 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;@655e19f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:24:39,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:24:39,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 2318 states, 2287 states have (on average 1.8828159160472235) internal successors, (4306), 2292 states have internal predecessors, (4306), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-20 11:24:39,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:39,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:39,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:39,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:39,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash 931615035, now seen corresponding path program 1 times [2023-12-20 11:24:39,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:39,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814527643] [2023-12-20 11:24:39,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:39,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:39,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:39,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:39,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:39,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:39,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:39,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814527643] [2023-12-20 11:24:39,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814527643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:39,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:39,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 11:24:39,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259830104] [2023-12-20 11:24:39,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:39,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 11:24:39,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:39,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 11:24:39,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 11:24:39,427 INFO L87 Difference]: Start difference. First operand has 2318 states, 2287 states have (on average 1.8828159160472235) internal successors, (4306), 2292 states have internal predecessors, (4306), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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) [2023-12-20 11:24:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:40,173 INFO L93 Difference]: Finished difference Result 4689 states and 8790 transitions. [2023-12-20 11:24:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 11:24:40,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:40,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:40,198 INFO L225 Difference]: With dead ends: 4689 [2023-12-20 11:24:40,198 INFO L226 Difference]: Without dead ends: 2373 [2023-12-20 11:24:40,206 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 [2023-12-20 11:24:40,209 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 494 mSDsluCounter, 12068 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 16203 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:40,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 16203 Invalid, 571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 11:24:40,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-12-20 11:24:40,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2313. [2023-12-20 11:24:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2284 states have (on average 1.8476357267950962) internal successors, (4220), 2287 states have internal predecessors, (4220), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-20 11:24:40,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 4260 transitions. [2023-12-20 11:24:40,294 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 4260 transitions. Word has length 92 [2023-12-20 11:24:40,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:40,294 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 4260 transitions. [2023-12-20 11:24:40,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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) [2023-12-20 11:24:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 4260 transitions. [2023-12-20 11:24:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:40,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:40,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:40,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:24:40,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:40,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:40,299 INFO L85 PathProgramCache]: Analyzing trace with hash -393241159, now seen corresponding path program 1 times [2023-12-20 11:24:40,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:40,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331322707] [2023-12-20 11:24:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:40,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:40,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:40,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:40,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:40,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:40,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331322707] [2023-12-20 11:24:40,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331322707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:40,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:40,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:24:40,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258422382] [2023-12-20 11:24:40,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:40,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:24:40,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:24:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:24:40,478 INFO L87 Difference]: Start difference. First operand 2313 states and 4260 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-20 11:24:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:41,817 INFO L93 Difference]: Finished difference Result 2800 states and 5052 transitions. [2023-12-20 11:24:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:24:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:41,826 INFO L225 Difference]: With dead ends: 2800 [2023-12-20 11:24:41,827 INFO L226 Difference]: Without dead ends: 2619 [2023-12-20 11:24:41,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:24:41,829 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4687 mSDsluCounter, 12324 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4699 SdHoareTripleChecker+Valid, 16438 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:41,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4699 Valid, 16438 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 11:24:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2023-12-20 11:24:41,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2498. [2023-12-20 11:24:41,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2448 states have (on average 1.8321078431372548) internal successors, (4485), 2452 states have internal predecessors, (4485), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-12-20 11:24:41,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4556 transitions. [2023-12-20 11:24:41,943 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4556 transitions. Word has length 92 [2023-12-20 11:24:41,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:41,944 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4556 transitions. [2023-12-20 11:24:41,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-20 11:24:41,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4556 transitions. [2023-12-20 11:24:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:41,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:41,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:41,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:24:41,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:41,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:41,946 INFO L85 PathProgramCache]: Analyzing trace with hash 468424757, now seen corresponding path program 1 times [2023-12-20 11:24:41,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:41,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960433966] [2023-12-20 11:24:41,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:41,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:42,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:42,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:42,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:42,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:42,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:42,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:42,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960433966] [2023-12-20 11:24:42,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960433966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:42,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:42,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:24:42,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079608086] [2023-12-20 11:24:42,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:42,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:24:42,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:42,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:24:42,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:24:42,110 INFO L87 Difference]: Start difference. First operand 2498 states and 4556 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:43,498 INFO L93 Difference]: Finished difference Result 3235 states and 5750 transitions. [2023-12-20 11:24:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:24:43,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:43,509 INFO L225 Difference]: With dead ends: 3235 [2023-12-20 11:24:43,509 INFO L226 Difference]: Without dead ends: 2869 [2023-12-20 11:24:43,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:24:43,512 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 4702 mSDsluCounter, 16709 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4714 SdHoareTripleChecker+Valid, 20941 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:43,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4714 Valid, 20941 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 11:24:43,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2023-12-20 11:24:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2670. [2023-12-20 11:24:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8176221623701423) internal successors, (4724), 2604 states have internal predecessors, (4724), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-20 11:24:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4825 transitions. [2023-12-20 11:24:43,578 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4825 transitions. Word has length 92 [2023-12-20 11:24:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:43,579 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4825 transitions. [2023-12-20 11:24:43,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:43,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4825 transitions. [2023-12-20 11:24:43,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:43,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:43,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:43,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:24:43,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:43,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:43,586 INFO L85 PathProgramCache]: Analyzing trace with hash 495490359, now seen corresponding path program 1 times [2023-12-20 11:24:43,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:43,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777372839] [2023-12-20 11:24:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:43,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:43,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:43,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:43,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:43,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:43,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777372839] [2023-12-20 11:24:43,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777372839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:43,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:43,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:24:43,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131647509] [2023-12-20 11:24:43,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:43,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:24:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:43,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:24:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:24:43,750 INFO L87 Difference]: Start difference. First operand 2670 states and 4825 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:44,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:44,565 INFO L93 Difference]: Finished difference Result 3409 states and 6031 transitions. [2023-12-20 11:24:44,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:24:44,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:44,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:44,575 INFO L225 Difference]: With dead ends: 3409 [2023-12-20 11:24:44,575 INFO L226 Difference]: Without dead ends: 2871 [2023-12-20 11:24:44,578 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 [2023-12-20 11:24:44,579 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4506 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4519 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:44,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4519 Valid, 20363 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 11:24:44,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2023-12-20 11:24:44,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2670. [2023-12-20 11:24:44,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.816467872258561) internal successors, (4721), 2604 states have internal predecessors, (4721), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-20 11:24:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4822 transitions. [2023-12-20 11:24:44,632 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4822 transitions. Word has length 92 [2023-12-20 11:24:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:44,632 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4822 transitions. [2023-12-20 11:24:44,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:44,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4822 transitions. [2023-12-20 11:24:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:44,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:44,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:44,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:24:44,634 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:44,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:44,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2065372487, now seen corresponding path program 1 times [2023-12-20 11:24:44,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:44,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680417552] [2023-12-20 11:24:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:44,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:44,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:44,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:44,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:44,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:44,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680417552] [2023-12-20 11:24:44,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680417552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:44,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:44,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:24:44,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698507175] [2023-12-20 11:24:44,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:44,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:24:44,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:24:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:24:44,773 INFO L87 Difference]: Start difference. First operand 2670 states and 4822 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:45,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:45,468 INFO L93 Difference]: Finished difference Result 3405 states and 6014 transitions. [2023-12-20 11:24:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:24:45,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:45,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:45,477 INFO L225 Difference]: With dead ends: 3405 [2023-12-20 11:24:45,477 INFO L226 Difference]: Without dead ends: 2867 [2023-12-20 11:24:45,479 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 [2023-12-20 11:24:45,480 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4504 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4517 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:45,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4517 Valid, 20363 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 11:24:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2023-12-20 11:24:45,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2670. [2023-12-20 11:24:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8153135821469797) internal successors, (4718), 2604 states have internal predecessors, (4718), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-20 11:24:45,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4819 transitions. [2023-12-20 11:24:45,545 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4819 transitions. Word has length 92 [2023-12-20 11:24:45,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:45,546 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4819 transitions. [2023-12-20 11:24:45,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:45,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4819 transitions. [2023-12-20 11:24:45,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:45,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:45,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:45,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:24:45,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:45,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1178149641, now seen corresponding path program 1 times [2023-12-20 11:24:45,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:45,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825149243] [2023-12-20 11:24:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:45,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:45,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:45,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:45,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:45,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:45,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:45,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825149243] [2023-12-20 11:24:45,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825149243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:45,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:45,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:24:45,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478114111] [2023-12-20 11:24:45,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:45,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:24:45,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:45,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:24:45,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:24:45,697 INFO L87 Difference]: Start difference. First operand 2670 states and 4819 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:46,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:46,394 INFO L93 Difference]: Finished difference Result 3401 states and 5997 transitions. [2023-12-20 11:24:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:24:46,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:46,404 INFO L225 Difference]: With dead ends: 3401 [2023-12-20 11:24:46,404 INFO L226 Difference]: Without dead ends: 2863 [2023-12-20 11:24:46,406 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 [2023-12-20 11:24:46,407 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4502 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4515 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:46,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4515 Valid, 20363 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 11:24:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2023-12-20 11:24:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2670. [2023-12-20 11:24:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8141592920353982) internal successors, (4715), 2604 states have internal predecessors, (4715), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-20 11:24:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4816 transitions. [2023-12-20 11:24:46,461 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4816 transitions. Word has length 92 [2023-12-20 11:24:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:46,462 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4816 transitions. [2023-12-20 11:24:46,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:46,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4816 transitions. [2023-12-20 11:24:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:46,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:46,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:46,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:24:46,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:46,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1205775097, now seen corresponding path program 1 times [2023-12-20 11:24:46,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:46,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243177949] [2023-12-20 11:24:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:46,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:46,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:46,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:46,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:46,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243177949] [2023-12-20 11:24:46,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243177949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:46,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:46,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:24:46,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031349642] [2023-12-20 11:24:46,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:46,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:24:46,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:46,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:24:46,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:24:46,569 INFO L87 Difference]: Start difference. First operand 2670 states and 4816 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:47,897 INFO L93 Difference]: Finished difference Result 3995 states and 6919 transitions. [2023-12-20 11:24:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:24:47,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:47,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:47,908 INFO L225 Difference]: With dead ends: 3995 [2023-12-20 11:24:47,909 INFO L226 Difference]: Without dead ends: 3457 [2023-12-20 11:24:47,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:24:47,912 INFO L413 NwaCegarLoop]: 4125 mSDtfsCounter, 4914 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4932 SdHoareTripleChecker+Valid, 20541 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:47,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4932 Valid, 20541 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 11:24:47,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2023-12-20 11:24:47,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3023. [2023-12-20 11:24:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3023 states, 2912 states have (on average 1.7870879120879122) internal successors, (5204), 2919 states have internal predecessors, (5204), 75 states have call successors, (75), 31 states have call predecessors, (75), 34 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-12-20 11:24:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 5365 transitions. [2023-12-20 11:24:47,995 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 5365 transitions. Word has length 92 [2023-12-20 11:24:47,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:47,995 INFO L495 AbstractCegarLoop]: Abstraction has 3023 states and 5365 transitions. [2023-12-20 11:24:47,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:47,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 5365 transitions. [2023-12-20 11:24:47,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:47,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:47,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:47,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:24:47,997 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:47,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:47,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1282675895, now seen corresponding path program 1 times [2023-12-20 11:24:47,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:47,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543068885] [2023-12-20 11:24:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:47,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:48,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:48,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:48,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:48,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:48,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:48,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543068885] [2023-12-20 11:24:48,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543068885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:48,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:48,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:24:48,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261789600] [2023-12-20 11:24:48,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:48,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:24:48,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:48,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:24:48,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:24:48,194 INFO L87 Difference]: Start difference. First operand 3023 states and 5365 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:49,849 INFO L93 Difference]: Finished difference Result 5308 states and 8978 transitions. [2023-12-20 11:24:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:24:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:49,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:49,865 INFO L225 Difference]: With dead ends: 5308 [2023-12-20 11:24:49,866 INFO L226 Difference]: Without dead ends: 4417 [2023-12-20 11:24:49,870 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 [2023-12-20 11:24:49,870 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 4711 mSDsluCounter, 16701 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4722 SdHoareTripleChecker+Valid, 20928 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:49,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4722 Valid, 20928 Invalid, 2057 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 11:24:49,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2023-12-20 11:24:49,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 3680. [2023-12-20 11:24:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3491 states have (on average 1.7462045259238042) internal successors, (6096), 3502 states have internal predecessors, (6096), 125 states have call successors, (125), 55 states have call predecessors, (125), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2023-12-20 11:24:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 6379 transitions. [2023-12-20 11:24:49,986 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 6379 transitions. Word has length 92 [2023-12-20 11:24:49,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:49,986 INFO L495 AbstractCegarLoop]: Abstraction has 3680 states and 6379 transitions. [2023-12-20 11:24:49,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:49,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 6379 transitions. [2023-12-20 11:24:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:49,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:49,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:49,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:24:49,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:49,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash 315325241, now seen corresponding path program 1 times [2023-12-20 11:24:49,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:49,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941756872] [2023-12-20 11:24:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:49,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:50,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:50,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:50,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:50,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:50,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:50,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:50,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941756872] [2023-12-20 11:24:50,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941756872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:50,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:50,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:24:50,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400280694] [2023-12-20 11:24:50,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:50,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:24:50,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:50,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:24:50,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:24:50,129 INFO L87 Difference]: Start difference. First operand 3680 states and 6379 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:51,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:51,689 INFO L93 Difference]: Finished difference Result 7751 states and 12786 transitions. [2023-12-20 11:24:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:24:51,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:51,708 INFO L225 Difference]: With dead ends: 7751 [2023-12-20 11:24:51,708 INFO L226 Difference]: Without dead ends: 6203 [2023-12-20 11:24:51,714 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 [2023-12-20 11:24:51,715 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4792 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4810 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:51,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4810 Valid, 20932 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 11:24:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2023-12-20 11:24:51,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 5033. [2023-12-20 11:24:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 4692 states have (on average 1.696078431372549) internal successors, (7958), 4711 states have internal predecessors, (7958), 221 states have call successors, (221), 103 states have call predecessors, (221), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2023-12-20 11:24:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 8495 transitions. [2023-12-20 11:24:51,856 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 8495 transitions. Word has length 92 [2023-12-20 11:24:51,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:51,856 INFO L495 AbstractCegarLoop]: Abstraction has 5033 states and 8495 transitions. [2023-12-20 11:24:51,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:51,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 8495 transitions. [2023-12-20 11:24:51,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:51,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:51,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:51,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 11:24:51,859 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:51,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:51,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2071184265, now seen corresponding path program 1 times [2023-12-20 11:24:51,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:51,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545142927] [2023-12-20 11:24:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:51,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:51,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:51,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:51,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:51,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545142927] [2023-12-20 11:24:51,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545142927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:51,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:51,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:24:51,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895199381] [2023-12-20 11:24:51,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:51,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:24:51,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:51,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:24:51,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:24:51,977 INFO L87 Difference]: Start difference. First operand 5033 states and 8495 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:53,505 INFO L93 Difference]: Finished difference Result 12630 states and 20476 transitions. [2023-12-20 11:24:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:24:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:53,528 INFO L225 Difference]: With dead ends: 12630 [2023-12-20 11:24:53,528 INFO L226 Difference]: Without dead ends: 9729 [2023-12-20 11:24:53,538 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 [2023-12-20 11:24:53,538 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4762 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4780 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:53,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4780 Valid, 20932 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 11:24:53,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2023-12-20 11:24:53,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 7738. [2023-12-20 11:24:53,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7738 states, 7101 states have (on average 1.6470919588790311) internal successors, (11696), 7136 states have internal predecessors, (11696), 405 states have call successors, (405), 199 states have call predecessors, (405), 230 states have return successors, (678), 434 states have call predecessors, (678), 403 states have call successors, (678) [2023-12-20 11:24:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 12779 transitions. [2023-12-20 11:24:53,772 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 12779 transitions. Word has length 92 [2023-12-20 11:24:53,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:53,772 INFO L495 AbstractCegarLoop]: Abstraction has 7738 states and 12779 transitions. [2023-12-20 11:24:53,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 12779 transitions. [2023-12-20 11:24:53,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:53,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:53,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:53,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 11:24:53,778 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:53,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:53,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1731156857, now seen corresponding path program 1 times [2023-12-20 11:24:53,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:53,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455415898] [2023-12-20 11:24:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:53,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:53,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:53,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:53,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455415898] [2023-12-20 11:24:53,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455415898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:53,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:53,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:24:53,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919876133] [2023-12-20 11:24:53,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:53,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:24:53,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:53,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:24:53,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:24:53,880 INFO L87 Difference]: Start difference. First operand 7738 states and 12779 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:55,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:55,397 INFO L93 Difference]: Finished difference Result 21731 states and 35014 transitions. [2023-12-20 11:24:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:24:55,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:55,442 INFO L225 Difference]: With dead ends: 21731 [2023-12-20 11:24:55,442 INFO L226 Difference]: Without dead ends: 16125 [2023-12-20 11:24:55,462 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 [2023-12-20 11:24:55,462 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4684 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:55,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4702 Valid, 20932 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 11:24:55,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2023-12-20 11:24:55,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 13180. [2023-12-20 11:24:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13180 states, 11967 states have (on average 1.6100944263390993) internal successors, (19268), 12034 states have internal predecessors, (19268), 757 states have call successors, (757), 391 states have call predecessors, (757), 454 states have return successors, (1548), 818 states have call predecessors, (1548), 755 states have call successors, (1548) [2023-12-20 11:24:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13180 states to 13180 states and 21573 transitions. [2023-12-20 11:24:55,975 INFO L78 Accepts]: Start accepts. Automaton has 13180 states and 21573 transitions. Word has length 92 [2023-12-20 11:24:55,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:55,976 INFO L495 AbstractCegarLoop]: Abstraction has 13180 states and 21573 transitions. [2023-12-20 11:24:55,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-20 11:24:55,976 INFO L276 IsEmpty]: Start isEmpty. Operand 13180 states and 21573 transitions. [2023-12-20 11:24:55,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 11:24:55,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:55,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:55,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 11:24:55,987 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:55,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:55,987 INFO L85 PathProgramCache]: Analyzing trace with hash 515003131, now seen corresponding path program 1 times [2023-12-20 11:24:55,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:55,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190548902] [2023-12-20 11:24:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:55,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:56,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:56,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:56,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:56,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:56,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:24:56,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190548902] [2023-12-20 11:24:56,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190548902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:56,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:24:56,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:24:56,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25425825] [2023-12-20 11:24:56,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:56,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:24:56,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:56,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:24:56,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:24:56,089 INFO L87 Difference]: Start difference. First operand 13180 states and 21573 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-20 11:24:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:57,581 INFO L93 Difference]: Finished difference Result 33458 states and 53843 transitions. [2023-12-20 11:24:57,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:24:57,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 92 [2023-12-20 11:24:57,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:57,650 INFO L225 Difference]: With dead ends: 33458 [2023-12-20 11:24:57,650 INFO L226 Difference]: Without dead ends: 22411 [2023-12-20 11:24:57,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-20 11:24:57,686 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 4889 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4920 SdHoareTripleChecker+Valid, 16668 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:57,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4920 Valid, 16668 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 11:24:57,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22411 states. [2023-12-20 11:24:58,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22411 to 18624. [2023-12-20 11:24:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18624 states, 16782 states have (on average 1.5839590036944344) internal successors, (26582), 16914 states have internal predecessors, (26582), 1156 states have call successors, (1156), 589 states have call predecessors, (1156), 684 states have return successors, (2191), 1184 states have call predecessors, (2191), 1154 states have call successors, (2191) [2023-12-20 11:24:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18624 states to 18624 states and 29929 transitions. [2023-12-20 11:24:58,504 INFO L78 Accepts]: Start accepts. Automaton has 18624 states and 29929 transitions. Word has length 92 [2023-12-20 11:24:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:24:58,504 INFO L495 AbstractCegarLoop]: Abstraction has 18624 states and 29929 transitions. [2023-12-20 11:24:58,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-20 11:24:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 18624 states and 29929 transitions. [2023-12-20 11:24:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-20 11:24:58,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:24:58,537 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:24:58,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 11:24:58,537 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:24:58,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:24:58,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1522946736, now seen corresponding path program 1 times [2023-12-20 11:24:58,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:24:58,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072760476] [2023-12-20 11:24:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:58,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:24:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:58,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:24:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:58,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:24:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:58,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:24:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:24:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:24:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 11:24:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:58,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:24:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:58,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-20 11:24:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:24:58,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:24:58,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072760476] [2023-12-20 11:24:58,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072760476] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:24:58,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415781968] [2023-12-20 11:24:58,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:24:58,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:24:58,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:24:58,687 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) [2023-12-20 11:24:58,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 11:24:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:24:58,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:24:58,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:24:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 11:24:58,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:24:58,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415781968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:24:58,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:24:58,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:24:58,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008816204] [2023-12-20 11:24:58,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:24:58,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:24:58,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:24:58,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:24:58,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:24:58,906 INFO L87 Difference]: Start difference. First operand 18624 states and 29929 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2023-12-20 11:24:59,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:24:59,831 INFO L93 Difference]: Finished difference Result 51207 states and 81635 transitions. [2023-12-20 11:24:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:24:59,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 148 [2023-12-20 11:24:59,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:24:59,911 INFO L225 Difference]: With dead ends: 51207 [2023-12-20 11:24:59,912 INFO L226 Difference]: Without dead ends: 34716 [2023-12-20 11:24:59,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:24:59,937 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4203 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4203 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:24:59,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4203 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:24:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34716 states. [2023-12-20 11:25:00,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34716 to 34614. [2023-12-20 11:25:00,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34614 states, 31040 states have (on average 1.562596649484536) internal successors, (48503), 31301 states have internal predecessors, (48503), 2206 states have call successors, (2206), 1175 states have call predecessors, (2206), 1366 states have return successors, (4215), 2201 states have call predecessors, (4215), 2204 states have call successors, (4215) [2023-12-20 11:25:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34614 states to 34614 states and 54924 transitions. [2023-12-20 11:25:00,936 INFO L78 Accepts]: Start accepts. Automaton has 34614 states and 54924 transitions. Word has length 148 [2023-12-20 11:25:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:25:00,936 INFO L495 AbstractCegarLoop]: Abstraction has 34614 states and 54924 transitions. [2023-12-20 11:25:00,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2023-12-20 11:25:00,936 INFO L276 IsEmpty]: Start isEmpty. Operand 34614 states and 54924 transitions. [2023-12-20 11:25:00,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-20 11:25:00,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:25:00,991 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:25:01,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 11:25:01,198 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,SelfDestructingSolverStorable12 [2023-12-20 11:25:01,199 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:25:01,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:25:01,199 INFO L85 PathProgramCache]: Analyzing trace with hash -941814926, now seen corresponding path program 1 times [2023-12-20 11:25:01,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:25:01,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394658307] [2023-12-20 11:25:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:25:01,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:25:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:25:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:25:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:01,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:25:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:25:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:25:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 11:25:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:25:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:01,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-20 11:25:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:25:01,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:25:01,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394658307] [2023-12-20 11:25:01,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394658307] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:25:01,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919418276] [2023-12-20 11:25:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:25:01,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:25:01,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:25:01,468 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) [2023-12-20 11:25:01,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 11:25:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:01,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:25:01,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:25:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 11:25:01,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:25:01,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919418276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:25:01,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:25:01,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:25:01,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144167821] [2023-12-20 11:25:01,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:25:01,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:25:01,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:25:01,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:25:01,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:25:01,658 INFO L87 Difference]: Start difference. First operand 34614 states and 54924 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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) [2023-12-20 11:25:03,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:25:03,323 INFO L93 Difference]: Finished difference Result 98977 states and 156780 transitions. [2023-12-20 11:25:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:25:03,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 148 [2023-12-20 11:25:03,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:25:03,536 INFO L225 Difference]: With dead ends: 98977 [2023-12-20 11:25:03,537 INFO L226 Difference]: Without dead ends: 66496 [2023-12-20 11:25:03,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:25:03,606 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4193 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4193 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:25:03,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4193 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:25:03,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66496 states. [2023-12-20 11:25:05,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66496 to 66296. [2023-12-20 11:25:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66296 states, 59260 states have (on average 1.5483462706716167) internal successors, (91755), 59779 states have internal predecessors, (91755), 4304 states have call successors, (4304), 2347 states have call predecessors, (4304), 2730 states have return successors, (8261), 4233 states have call predecessors, (8261), 4302 states have call successors, (8261) [2023-12-20 11:25:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66296 states to 66296 states and 104320 transitions. [2023-12-20 11:25:06,228 INFO L78 Accepts]: Start accepts. Automaton has 66296 states and 104320 transitions. Word has length 148 [2023-12-20 11:25:06,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:25:06,229 INFO L495 AbstractCegarLoop]: Abstraction has 66296 states and 104320 transitions. [2023-12-20 11:25:06,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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) [2023-12-20 11:25:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand 66296 states and 104320 transitions. [2023-12-20 11:25:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-20 11:25:06,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:25:06,309 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:25:06,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 11:25:06,519 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,SelfDestructingSolverStorable13 [2023-12-20 11:25:06,519 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:25:06,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:25:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1596100940, now seen corresponding path program 1 times [2023-12-20 11:25:06,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:25:06,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939053812] [2023-12-20 11:25:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:25:06,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:25:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:25:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:06,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:25:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:25:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:06,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:25:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:25:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:06,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 11:25:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:06,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:25:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:06,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-20 11:25:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:25:06,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:25:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939053812] [2023-12-20 11:25:06,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939053812] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:25:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626626539] [2023-12-20 11:25:06,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:25:06,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:25:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:25:06,642 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) [2023-12-20 11:25:06,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 11:25:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:06,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:25:06,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:25:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-20 11:25:06,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:25:06,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626626539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:25:06,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:25:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:25:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232373637] [2023-12-20 11:25:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:25:06,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:25:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:25:06,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:25:06,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:25:06,808 INFO L87 Difference]: Start difference. First operand 66296 states and 104320 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2023-12-20 11:25:10,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:25:10,308 INFO L93 Difference]: Finished difference Result 193419 states and 304886 transitions. [2023-12-20 11:25:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:25:10,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 148 [2023-12-20 11:25:10,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:25:10,718 INFO L225 Difference]: With dead ends: 193419 [2023-12-20 11:25:10,719 INFO L226 Difference]: Without dead ends: 129256 [2023-12-20 11:25:10,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:25:10,815 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4208 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:25:10,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4208 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:25:10,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129256 states. [2023-12-20 11:25:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129256 to 128860. [2023-12-20 11:25:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128860 states, 115008 states have (on average 1.538840776293823) internal successors, (176979), 116043 states have internal predecessors, (176979), 8396 states have call successors, (8396), 4687 states have call predecessors, (8396), 5454 states have return successors, (16249), 8193 states have call predecessors, (16249), 8394 states have call successors, (16249) [2023-12-20 11:25:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128860 states to 128860 states and 201624 transitions. [2023-12-20 11:25:15,981 INFO L78 Accepts]: Start accepts. Automaton has 128860 states and 201624 transitions. Word has length 148 [2023-12-20 11:25:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:25:15,981 INFO L495 AbstractCegarLoop]: Abstraction has 128860 states and 201624 transitions. [2023-12-20 11:25:15,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2023-12-20 11:25:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 128860 states and 201624 transitions. [2023-12-20 11:25:16,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-20 11:25:16,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:25:16,304 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:25:16,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 11:25:16,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:25:16,512 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:25:16,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:25:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash 944103218, now seen corresponding path program 1 times [2023-12-20 11:25:16,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:25:16,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144257623] [2023-12-20 11:25:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:25:16,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:25:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:25:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:25:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:16,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:25:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:25:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:25:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 11:25:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:16,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:25:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:16,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-20 11:25:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:25:16,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:25:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144257623] [2023-12-20 11:25:16,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144257623] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:25:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748742437] [2023-12-20 11:25:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:25:16,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:25:16,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:25:16,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:25:16,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 11:25:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:16,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:25:16,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:25:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-20 11:25:16,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:25:16,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748742437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:25:16,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:25:16,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:25:16,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011511953] [2023-12-20 11:25:16,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:25:16,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:25:16,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:25:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:25:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:25:16,771 INFO L87 Difference]: Start difference. First operand 128860 states and 201624 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-12-20 11:25:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:25:24,282 INFO L93 Difference]: Finished difference Result 376945 states and 593805 transitions. [2023-12-20 11:25:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:25:24,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 148 [2023-12-20 11:25:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:25:25,335 INFO L225 Difference]: With dead ends: 376945 [2023-12-20 11:25:25,336 INFO L226 Difference]: Without dead ends: 250219 [2023-12-20 11:25:25,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:25:25,553 INFO L413 NwaCegarLoop]: 4474 mSDtfsCounter, 255 mSDsluCounter, 4232 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 8706 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 11:25:25,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 8706 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 11:25:25,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250219 states. [2023-12-20 11:25:33,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250219 to 250219. [2023-12-20 11:25:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250219 states, 223120 states have (on average 1.5284286482610254) internal successors, (341023), 224924 states have internal predecessors, (341023), 16225 states have call successors, (16225), 9337 states have call predecessors, (16225), 10872 states have return successors, (35056), 16085 states have call predecessors, (35056), 16223 states have call successors, (35056) [2023-12-20 11:25:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250219 states to 250219 states and 392304 transitions. [2023-12-20 11:25:35,076 INFO L78 Accepts]: Start accepts. Automaton has 250219 states and 392304 transitions. Word has length 148 [2023-12-20 11:25:35,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:25:35,077 INFO L495 AbstractCegarLoop]: Abstraction has 250219 states and 392304 transitions. [2023-12-20 11:25:35,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-12-20 11:25:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 250219 states and 392304 transitions. [2023-12-20 11:25:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 11:25:35,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:25:35,991 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:25:35,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 11:25:36,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-20 11:25:36,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:25:36,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:25:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash 846145022, now seen corresponding path program 1 times [2023-12-20 11:25:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:25:36,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597742303] [2023-12-20 11:25:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:25:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:25:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:25:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 11:25:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 11:25:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 11:25:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 11:25:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 11:25:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:25:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-20 11:25:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:25:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-20 11:25:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-20 11:25:36,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:25:36,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597742303] [2023-12-20 11:25:36,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597742303] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:25:36,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722398097] [2023-12-20 11:25:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:25:36,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:25:36,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:25:36,330 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:25:36,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 11:25:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:25:36,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:25:36,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:25:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-20 11:25:36,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:25:36,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722398097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:25:36,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:25:36,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:25:36,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124301588] [2023-12-20 11:25:36,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:25:36,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:25:36,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:25:36,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:25:36,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:25:36,610 INFO L87 Difference]: Start difference. First operand 250219 states and 392304 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)