/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_label48+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:40:41,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:40:41,316 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 11:40:41,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:40:41,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:40:41,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:40:41,347 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:40:41,347 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:40:41,347 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:40:41,348 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:40:41,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:40:41,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:40:41,349 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:40:41,349 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:40:41,349 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:40:41,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:40:41,350 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:40:41,350 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:40:41,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:40:41,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:40:41,351 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:40:41,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:40:41,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:40:41,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:40:41,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:40:41,352 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:40:41,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:40:41,352 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:40:41,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:40:41,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:40:41,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:40:41,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:40:41,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:40:41,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:40:41,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:40:41,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:40:41,354 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:40:41,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:40:41,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:40:41,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:40:41,355 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:40:41,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:40:41,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:40:41,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:40:41,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:40:41,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:40:41,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:40:41,558 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:40:41,559 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:40:41,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.04.cil-1.c [2023-12-20 11:40:42,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:40:43,149 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:40:43,150 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.04.cil-1.c [2023-12-20 11:40:43,194 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c968dbb07/6a6e509ad8da4a3c8c4d9f98d3972835/FLAGeaf9d7be2 [2023-12-20 11:40:43,207 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c968dbb07/6a6e509ad8da4a3c8c4d9f98d3972835 [2023-12-20 11:40:43,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:40:43,211 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:40:43,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:40:43,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:40:43,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:40:43,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:40:43" (1/1) ... [2023-12-20 11:40:43,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f553c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:43, skipping insertion in model container [2023-12-20 11:40:43,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:40:43" (1/1) ... [2023-12-20 11:40:43,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:40:44,499 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_label48+token_ring.04.cil-1.c[375709,375722] [2023-12-20 11:40:44,527 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_label48+token_ring.04.cil-1.c[383339,383352] [2023-12-20 11:40:44,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:40:44,689 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:40:45,340 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_label48+token_ring.04.cil-1.c[375709,375722] [2023-12-20 11:40:45,351 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_label48+token_ring.04.cil-1.c[383339,383352] [2023-12-20 11:40:45,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:40:45,414 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:40:45,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45 WrapperNode [2023-12-20 11:40:45,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:40:45,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:40:45,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:40:45,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:40:45,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:45,487 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:45,693 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12753 [2023-12-20 11:40:45,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:40:45,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:40:45,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:40:45,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:40:45,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:45,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:45,754 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:45,823 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 11:40:45,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:45,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:46,011 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:46,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:46,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:46,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:46,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:40:46,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:40:46,140 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:40:46,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:40:46,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (1/1) ... [2023-12-20 11:40:46,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:40:46,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:40:46,174 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 11:40:46,193 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 11:40:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:40:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:40:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:40:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:40:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:40:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:40:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:40:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:40:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:40:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:40:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:40:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:40:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:40:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:40:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:40:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:40:46,280 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:40:46,282 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:40:51,772 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:40:51,875 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:40:51,875 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-20 11:40:51,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:40:51 BoogieIcfgContainer [2023-12-20 11:40:51,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:40:51,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:40:51,879 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:40:51,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:40:51,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:40:43" (1/3) ... [2023-12-20 11:40:51,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5655145f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:40:51, skipping insertion in model container [2023-12-20 11:40:51,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:40:45" (2/3) ... [2023-12-20 11:40:51,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5655145f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:40:51, skipping insertion in model container [2023-12-20 11:40:51,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:40:51" (3/3) ... [2023-12-20 11:40:51,884 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.04.cil-1.c [2023-12-20 11:40:51,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:40:51,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:40:51,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:40:51,992 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;@ffaa983, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:40:51,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:40:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 2287 states, 2260 states have (on average 1.8836283185840708) internal successors, (4257), 2263 states have internal predecessors, (4257), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-20 11:40:52,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 11:40:52,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:40:52,016 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] [2023-12-20 11:40:52,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:40:52,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:40:52,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1377940007, now seen corresponding path program 1 times [2023-12-20 11:40:52,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:40:52,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791220635] [2023-12-20 11:40:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:40:52,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:40:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:40:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:52,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:40:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:40:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:40:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:40:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:52,362 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 11:40:52,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:40:52,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791220635] [2023-12-20 11:40:52,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791220635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:40:52,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:40:52,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 11:40:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438036966] [2023-12-20 11:40:52,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:40:52,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 11:40:52,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:40:52,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 11:40:52,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 11:40:52,415 INFO L87 Difference]: Start difference. First operand has 2287 states, 2260 states have (on average 1.8836283185840708) internal successors, (4257), 2263 states have internal predecessors, (4257), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:53,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:40:53,091 INFO L93 Difference]: Finished difference Result 4620 states and 8666 transitions. [2023-12-20 11:40:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 11:40:53,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 11:40:53,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:40:53,115 INFO L225 Difference]: With dead ends: 4620 [2023-12-20 11:40:53,116 INFO L226 Difference]: Without dead ends: 2333 [2023-12-20 11:40:53,123 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 11:40:53,126 INFO L413 NwaCegarLoop]: 4105 mSDtfsCounter, 411 mSDsluCounter, 12028 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 16133 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:40:53,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 16133 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 11:40:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2023-12-20 11:40:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2283. [2023-12-20 11:40:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2257 states have (on average 1.8489144882587505) internal successors, (4173), 2259 states have internal predecessors, (4173), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-20 11:40:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 4209 transitions. [2023-12-20 11:40:53,222 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 4209 transitions. Word has length 81 [2023-12-20 11:40:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:40:53,222 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 4209 transitions. [2023-12-20 11:40:53,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 4209 transitions. [2023-12-20 11:40:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 11:40:53,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:40:53,225 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] [2023-12-20 11:40:53,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:40:53,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:40:53,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:40:53,226 INFO L85 PathProgramCache]: Analyzing trace with hash 490717161, now seen corresponding path program 1 times [2023-12-20 11:40:53,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:40:53,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812134948] [2023-12-20 11:40:53,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:40:53,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:40:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:53,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:40:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:53,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:40:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:40:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:40:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:53,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:40:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:53,357 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 11:40:53,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:40:53,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812134948] [2023-12-20 11:40:53,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812134948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:40:53,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:40:53,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:40:53,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68197834] [2023-12-20 11:40:53,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:40:53,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:40:53,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:40:53,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:40:53,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:40:53,360 INFO L87 Difference]: Start difference. First operand 2283 states and 4209 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:40:54,437 INFO L93 Difference]: Finished difference Result 2690 states and 4863 transitions. [2023-12-20 11:40:54,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:40:54,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 11:40:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:40:54,446 INFO L225 Difference]: With dead ends: 2690 [2023-12-20 11:40:54,446 INFO L226 Difference]: Without dead ends: 2538 [2023-12-20 11:40:54,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:40:54,448 INFO L413 NwaCegarLoop]: 4086 mSDtfsCounter, 4562 mSDsluCounter, 12233 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4573 SdHoareTripleChecker+Valid, 16319 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:40:54,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4573 Valid, 16319 Invalid, 1022 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [76 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 11:40:54,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2023-12-20 11:40:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2439. [2023-12-20 11:40:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 2393 states have (on average 1.8340994567488509) internal successors, (4389), 2396 states have internal predecessors, (4389), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-12-20 11:40:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 4454 transitions. [2023-12-20 11:40:54,492 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 4454 transitions. Word has length 81 [2023-12-20 11:40:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:40:54,493 INFO L495 AbstractCegarLoop]: Abstraction has 2439 states and 4454 transitions. [2023-12-20 11:40:54,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 4454 transitions. [2023-12-20 11:40:54,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 11:40:54,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:40:54,495 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] [2023-12-20 11:40:54,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:40:54,495 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:40:54,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:40:54,495 INFO L85 PathProgramCache]: Analyzing trace with hash -927081943, now seen corresponding path program 1 times [2023-12-20 11:40:54,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:40:54,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233437745] [2023-12-20 11:40:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:40:54,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:40:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:54,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:40:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:54,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:40:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:54,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:40:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:54,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:40:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:54,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:40:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:54,620 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 11:40:54,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:40:54,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233437745] [2023-12-20 11:40:54,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233437745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:40:54,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:40:54,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:40:54,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121567330] [2023-12-20 11:40:54,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:40:54,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:40:54,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:40:54,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:40:54,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:40:54,622 INFO L87 Difference]: Start difference. First operand 2439 states and 4454 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:55,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:40:55,905 INFO L93 Difference]: Finished difference Result 3055 states and 5437 transitions. [2023-12-20 11:40:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:40:55,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 11:40:55,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:40:55,916 INFO L225 Difference]: With dead ends: 3055 [2023-12-20 11:40:55,916 INFO L226 Difference]: Without dead ends: 2747 [2023-12-20 11:40:55,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:40:55,919 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4567 mSDsluCounter, 16521 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 20701 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:40:55,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 20701 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 11:40:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2023-12-20 11:40:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2584. [2023-12-20 11:40:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2518 states have (on average 1.8200953137410643) internal successors, (4583), 2522 states have internal predecessors, (4583), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-12-20 11:40:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 4676 transitions. [2023-12-20 11:40:55,975 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 4676 transitions. Word has length 81 [2023-12-20 11:40:55,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:40:55,976 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 4676 transitions. [2023-12-20 11:40:55,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:55,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 4676 transitions. [2023-12-20 11:40:55,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 11:40:55,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:40:55,977 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] [2023-12-20 11:40:55,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:40:55,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:40:55,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:40:55,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2143235669, now seen corresponding path program 1 times [2023-12-20 11:40:55,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:40:55,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027881774] [2023-12-20 11:40:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:40:55,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:40:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:56,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:40:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:56,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:40:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:56,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:40:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:56,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:40:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:56,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:40:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:56,087 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 11:40:56,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:40:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027881774] [2023-12-20 11:40:56,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027881774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:40:56,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:40:56,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:40:56,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202228285] [2023-12-20 11:40:56,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:40:56,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:40:56,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:40:56,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:40:56,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:40:56,089 INFO L87 Difference]: Start difference. First operand 2584 states and 4676 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:57,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:40:57,385 INFO L93 Difference]: Finished difference Result 3589 states and 6275 transitions. [2023-12-20 11:40:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:40:57,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 11:40:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:40:57,396 INFO L225 Difference]: With dead ends: 3589 [2023-12-20 11:40:57,396 INFO L226 Difference]: Without dead ends: 3136 [2023-12-20 11:40:57,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:40:57,398 INFO L413 NwaCegarLoop]: 4095 mSDtfsCounter, 4613 mSDsluCounter, 16302 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4624 SdHoareTripleChecker+Valid, 20397 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:40:57,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4624 Valid, 20397 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:40:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2023-12-20 11:40:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 2875. [2023-12-20 11:40:57,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2769 states have (on average 1.795594077284218) internal successors, (4972), 2775 states have internal predecessors, (4972), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-20 11:40:57,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 5125 transitions. [2023-12-20 11:40:57,469 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 5125 transitions. Word has length 81 [2023-12-20 11:40:57,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:40:57,469 INFO L495 AbstractCegarLoop]: Abstraction has 2875 states and 5125 transitions. [2023-12-20 11:40:57,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 5125 transitions. [2023-12-20 11:40:57,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 11:40:57,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:40:57,471 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] [2023-12-20 11:40:57,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:40:57,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:40:57,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:40:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1419764201, now seen corresponding path program 1 times [2023-12-20 11:40:57,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:40:57,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664991992] [2023-12-20 11:40:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:40:57,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:40:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:40:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:40:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:40:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:57,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:40:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:57,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:40:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:57,628 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 11:40:57,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:40:57,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664991992] [2023-12-20 11:40:57,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664991992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:40:57,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:40:57,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:40:57,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764086655] [2023-12-20 11:40:57,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:40:57,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:40:57,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:40:57,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:40:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:40:57,638 INFO L87 Difference]: Start difference. First operand 2875 states and 5125 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:58,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:40:58,240 INFO L93 Difference]: Finished difference Result 3870 states and 6717 transitions. [2023-12-20 11:40:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:40:58,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 11:40:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:40:58,249 INFO L225 Difference]: With dead ends: 3870 [2023-12-20 11:40:58,250 INFO L226 Difference]: Without dead ends: 3126 [2023-12-20 11:40:58,255 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 11:40:58,257 INFO L413 NwaCegarLoop]: 4073 mSDtfsCounter, 4481 mSDsluCounter, 12140 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 16213 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:40:58,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4493 Valid, 16213 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 11:40:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2023-12-20 11:40:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 2875. [2023-12-20 11:40:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2769 states have (on average 1.79378837125316) internal successors, (4967), 2775 states have internal predecessors, (4967), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-20 11:40:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 5120 transitions. [2023-12-20 11:40:58,331 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 5120 transitions. Word has length 81 [2023-12-20 11:40:58,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:40:58,331 INFO L495 AbstractCegarLoop]: Abstraction has 2875 states and 5120 transitions. [2023-12-20 11:40:58,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:58,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 5120 transitions. [2023-12-20 11:40:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 11:40:58,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:40:58,335 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] [2023-12-20 11:40:58,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:40:58,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:40:58,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:40:58,336 INFO L85 PathProgramCache]: Analyzing trace with hash -266415637, now seen corresponding path program 1 times [2023-12-20 11:40:58,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:40:58,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340769479] [2023-12-20 11:40:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:40:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:40:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:58,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:40:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:40:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:40:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:58,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:40:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:40:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:58,523 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 11:40:58,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:40:58,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340769479] [2023-12-20 11:40:58,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340769479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:40:58,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:40:58,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:40:58,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266841486] [2023-12-20 11:40:58,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:40:58,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:40:58,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:40:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:40:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:40:58,526 INFO L87 Difference]: Start difference. First operand 2875 states and 5120 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:59,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:40:59,739 INFO L93 Difference]: Finished difference Result 4829 states and 8192 transitions. [2023-12-20 11:40:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:40:59,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 11:40:59,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:40:59,752 INFO L225 Difference]: With dead ends: 4829 [2023-12-20 11:40:59,752 INFO L226 Difference]: Without dead ends: 4085 [2023-12-20 11:40:59,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:40:59,755 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4711 mSDsluCounter, 16516 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4727 SdHoareTripleChecker+Valid, 20692 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:40:59,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4727 Valid, 20692 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 11:40:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4085 states. [2023-12-20 11:40:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4085 to 3459. [2023-12-20 11:40:59,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3277 states have (on average 1.7552639609398841) internal successors, (5752), 3287 states have internal predecessors, (5752), 118 states have call successors, (118), 54 states have call predecessors, (118), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2023-12-20 11:40:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 6023 transitions. [2023-12-20 11:40:59,831 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 6023 transitions. Word has length 81 [2023-12-20 11:40:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:40:59,832 INFO L495 AbstractCegarLoop]: Abstraction has 3459 states and 6023 transitions. [2023-12-20 11:40:59,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:40:59,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 6023 transitions. [2023-12-20 11:40:59,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 11:40:59,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:40:59,833 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] [2023-12-20 11:40:59,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:40:59,834 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:40:59,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:40:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash -683812243, now seen corresponding path program 1 times [2023-12-20 11:40:59,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:40:59,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322420645] [2023-12-20 11:40:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:40:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:40:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:40:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:40:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:59,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:40:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:40:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:40:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:40:59,928 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 11:40:59,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:40:59,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322420645] [2023-12-20 11:40:59,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322420645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:40:59,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:40:59,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:40:59,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483028537] [2023-12-20 11:40:59,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:40:59,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:40:59,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:40:59,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:40:59,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:40:59,930 INFO L87 Difference]: Start difference. First operand 3459 states and 6023 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:41:01,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:41:01,242 INFO L93 Difference]: Finished difference Result 6997 states and 11579 transitions. [2023-12-20 11:41:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:41:01,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 11:41:01,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:41:01,286 INFO L225 Difference]: With dead ends: 6997 [2023-12-20 11:41:01,286 INFO L226 Difference]: Without dead ends: 5669 [2023-12-20 11:41:01,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:41:01,305 INFO L413 NwaCegarLoop]: 4175 mSDtfsCounter, 4584 mSDsluCounter, 16513 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 20688 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:41:01,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4594 Valid, 20688 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 11:41:01,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2023-12-20 11:41:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4582. [2023-12-20 11:41:01,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 4252 states have (on average 1.7064910630291628) internal successors, (7256), 4270 states have internal predecessors, (7256), 210 states have call successors, (210), 102 states have call predecessors, (210), 118 states have return successors, (307), 225 states have call predecessors, (307), 210 states have call successors, (307) [2023-12-20 11:41:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 7773 transitions. [2023-12-20 11:41:01,425 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 7773 transitions. Word has length 81 [2023-12-20 11:41:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:41:01,426 INFO L495 AbstractCegarLoop]: Abstraction has 4582 states and 7773 transitions. [2023-12-20 11:41:01,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:41:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 7773 transitions. [2023-12-20 11:41:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 11:41:01,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:41:01,428 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] [2023-12-20 11:41:01,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:41:01,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:41:01,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:41:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash -4539989, now seen corresponding path program 1 times [2023-12-20 11:41:01,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:41:01,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024973857] [2023-12-20 11:41:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:01,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:41:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:41:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:41:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:01,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:41:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:01,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:41:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:41:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:01,543 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 11:41:01,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:41:01,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024973857] [2023-12-20 11:41:01,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024973857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:41:01,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:41:01,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:41:01,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409546655] [2023-12-20 11:41:01,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:41:01,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:41:01,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:41:01,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:41:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:41:01,545 INFO L87 Difference]: Start difference. First operand 4582 states and 7773 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:41:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:41:02,779 INFO L93 Difference]: Finished difference Result 11098 states and 18019 transitions. [2023-12-20 11:41:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:41:02,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 11:41:02,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:41:02,807 INFO L225 Difference]: With dead ends: 11098 [2023-12-20 11:41:02,807 INFO L226 Difference]: Without dead ends: 8647 [2023-12-20 11:41:02,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:41:02,816 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4639 mSDsluCounter, 16516 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4655 SdHoareTripleChecker+Valid, 20692 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:41:02,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4655 Valid, 20692 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 11:41:02,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8647 states. [2023-12-20 11:41:03,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8647 to 6867. [2023-12-20 11:41:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6867 states, 6249 states have (on average 1.6549847975676109) internal successors, (10342), 6283 states have internal predecessors, (10342), 386 states have call successors, (386), 198 states have call predecessors, (386), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-12-20 11:41:03,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6867 states to 6867 states and 11389 transitions. [2023-12-20 11:41:03,122 INFO L78 Accepts]: Start accepts. Automaton has 6867 states and 11389 transitions. Word has length 81 [2023-12-20 11:41:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:41:03,122 INFO L495 AbstractCegarLoop]: Abstraction has 6867 states and 11389 transitions. [2023-12-20 11:41:03,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:41:03,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6867 states and 11389 transitions. [2023-12-20 11:41:03,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 11:41:03,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:41:03,126 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] [2023-12-20 11:41:03,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:41:03,126 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:41:03,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:41:03,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1957034669, now seen corresponding path program 1 times [2023-12-20 11:41:03,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:41:03,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713537839] [2023-12-20 11:41:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:03,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:41:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:03,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:41:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:41:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:41:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:41:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:03,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:41:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:03,228 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 11:41:03,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:41:03,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713537839] [2023-12-20 11:41:03,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713537839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:41:03,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:41:03,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:41:03,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220377711] [2023-12-20 11:41:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:41:03,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:41:03,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:41:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:41:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:41:03,230 INFO L87 Difference]: Start difference. First operand 6867 states and 11389 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:41:04,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:41:04,616 INFO L93 Difference]: Finished difference Result 19165 states and 30877 transitions. [2023-12-20 11:41:04,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:41:04,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 11:41:04,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:41:04,662 INFO L225 Difference]: With dead ends: 19165 [2023-12-20 11:41:04,662 INFO L226 Difference]: Without dead ends: 14429 [2023-12-20 11:41:04,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:41:04,681 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4603 mSDsluCounter, 16516 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4619 SdHoareTripleChecker+Valid, 20692 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:41:04,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4619 Valid, 20692 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 11:41:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14429 states. [2023-12-20 11:41:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14429 to 11436. [2023-12-20 11:41:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11436 states, 10258 states have (on average 1.6127900175472802) internal successors, (16544), 10324 states have internal predecessors, (16544), 722 states have call successors, (722), 390 states have call predecessors, (722), 454 states have return successors, (1515), 785 states have call predecessors, (1515), 722 states have call successors, (1515) [2023-12-20 11:41:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 18781 transitions. [2023-12-20 11:41:05,214 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 18781 transitions. Word has length 81 [2023-12-20 11:41:05,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:41:05,214 INFO L495 AbstractCegarLoop]: Abstraction has 11436 states and 18781 transitions. [2023-12-20 11:41:05,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:41:05,214 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 18781 transitions. [2023-12-20 11:41:05,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 11:41:05,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:41:05,222 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] [2023-12-20 11:41:05,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 11:41:05,222 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:41:05,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:41:05,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2136108693, now seen corresponding path program 1 times [2023-12-20 11:41:05,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:41:05,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774185513] [2023-12-20 11:41:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:05,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:41:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:05,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:41:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:41:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:41:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:05,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:41:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:05,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:41:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:05,339 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 11:41:05,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:41:05,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774185513] [2023-12-20 11:41:05,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774185513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:41:05,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:41:05,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:41:05,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28385126] [2023-12-20 11:41:05,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:41:05,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:41:05,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:41:05,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:41:05,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:41:05,341 INFO L87 Difference]: Start difference. First operand 11436 states and 18781 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:41:07,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:41:07,132 INFO L93 Difference]: Finished difference Result 34784 states and 56375 transitions. [2023-12-20 11:41:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:41:07,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 11:41:07,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:41:07,215 INFO L225 Difference]: With dead ends: 34784 [2023-12-20 11:41:07,215 INFO L226 Difference]: Without dead ends: 25479 [2023-12-20 11:41:07,246 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 11:41:07,247 INFO L413 NwaCegarLoop]: 4166 mSDtfsCounter, 4552 mSDsluCounter, 16504 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4562 SdHoareTripleChecker+Valid, 20670 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:41:07,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4562 Valid, 20670 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 11:41:07,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25479 states. [2023-12-20 11:41:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25479 to 20561. [2023-12-20 11:41:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20561 states, 18303 states have (on average 1.5847675244495438) internal successors, (29006), 18433 states have internal predecessors, (29006), 1358 states have call successors, (1358), 770 states have call predecessors, (1358), 898 states have return successors, (3673), 1485 states have call predecessors, (3673), 1358 states have call successors, (3673) [2023-12-20 11:41:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20561 states to 20561 states and 34037 transitions. [2023-12-20 11:41:08,208 INFO L78 Accepts]: Start accepts. Automaton has 20561 states and 34037 transitions. Word has length 81 [2023-12-20 11:41:08,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:41:08,209 INFO L495 AbstractCegarLoop]: Abstraction has 20561 states and 34037 transitions. [2023-12-20 11:41:08,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:41:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 20561 states and 34037 transitions. [2023-12-20 11:41:08,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 11:41:08,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:41:08,221 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] [2023-12-20 11:41:08,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 11:41:08,222 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:41:08,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:41:08,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1575408915, now seen corresponding path program 1 times [2023-12-20 11:41:08,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:41:08,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132408603] [2023-12-20 11:41:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:41:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:08,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:41:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:08,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:41:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:08,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:41:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:41:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:08,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:41:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:08,301 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 11:41:08,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:41:08,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132408603] [2023-12-20 11:41:08,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132408603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:41:08,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:41:08,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:41:08,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483823905] [2023-12-20 11:41:08,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:41:08,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:41:08,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:41:08,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:41:08,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:41:08,303 INFO L87 Difference]: Start difference. First operand 20561 states and 34037 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:41:10,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:41:10,064 INFO L93 Difference]: Finished difference Result 54256 states and 88376 transitions. [2023-12-20 11:41:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:41:10,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 11:41:10,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:41:10,266 INFO L225 Difference]: With dead ends: 54256 [2023-12-20 11:41:10,266 INFO L226 Difference]: Without dead ends: 35827 [2023-12-20 11:41:10,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-20 11:41:10,303 INFO L413 NwaCegarLoop]: 4213 mSDtfsCounter, 4743 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4772 SdHoareTripleChecker+Valid, 16522 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:41:10,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4772 Valid, 16522 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 11:41:10,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35827 states. [2023-12-20 11:41:11,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35827 to 29690. [2023-12-20 11:41:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29690 states, 26260 states have (on average 1.562909367859863) internal successors, (41042), 26519 states have internal predecessors, (41042), 2076 states have call successors, (2076), 1160 states have call predecessors, (2076), 1352 states have return successors, (5121), 2138 states have call predecessors, (5121), 2076 states have call successors, (5121) [2023-12-20 11:41:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29690 states to 29690 states and 48239 transitions. [2023-12-20 11:41:11,376 INFO L78 Accepts]: Start accepts. Automaton has 29690 states and 48239 transitions. Word has length 81 [2023-12-20 11:41:11,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:41:11,377 INFO L495 AbstractCegarLoop]: Abstraction has 29690 states and 48239 transitions. [2023-12-20 11:41:11,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 11:41:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand 29690 states and 48239 transitions. [2023-12-20 11:41:11,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 11:41:11,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:41:11,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:41:11,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 11:41:11,438 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:41:11,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:41:11,439 INFO L85 PathProgramCache]: Analyzing trace with hash -162136465, now seen corresponding path program 1 times [2023-12-20 11:41:11,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:41:11,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698299765] [2023-12-20 11:41:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:11,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:41:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:41:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:41:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:41:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:41:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:41:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:11,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 11:41:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:11,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:41:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 11:41:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:41:11,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:41:11,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698299765] [2023-12-20 11:41:11,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698299765] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:41:11,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076453877] [2023-12-20 11:41:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:11,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:41:11,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:41:11,543 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 11:41:11,604 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 11:41:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:11,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:41:11,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:41:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 11:41:11,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:41:11,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076453877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:41:11,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:41:11,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:41:11,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203342364] [2023-12-20 11:41:11,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:41:11,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:41:11,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:41:11,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:41:11,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:41:11,762 INFO L87 Difference]: Start difference. First operand 29690 states and 48239 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 11:41:13,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:41:13,149 INFO L93 Difference]: Finished difference Result 84209 states and 136555 transitions. [2023-12-20 11:41:13,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:41:13,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-12-20 11:41:13,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:41:13,317 INFO L225 Difference]: With dead ends: 84209 [2023-12-20 11:41:13,317 INFO L226 Difference]: Without dead ends: 56651 [2023-12-20 11:41:13,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 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 11:41:13,376 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4157 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4157 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:41:13,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4157 Valid, 4391 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:41:13,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56651 states. [2023-12-20 11:41:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56651 to 56455. [2023-12-20 11:41:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56455 states, 49707 states have (on average 1.5459995574064016) internal successors, (76847), 50223 states have internal predecessors, (76847), 4046 states have call successors, (4046), 2316 states have call predecessors, (4046), 2700 states have return successors, (10009), 4043 states have call predecessors, (10009), 4046 states have call successors, (10009) [2023-12-20 11:41:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56455 states to 56455 states and 90902 transitions. [2023-12-20 11:41:15,718 INFO L78 Accepts]: Start accepts. Automaton has 56455 states and 90902 transitions. Word has length 131 [2023-12-20 11:41:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:41:15,720 INFO L495 AbstractCegarLoop]: Abstraction has 56455 states and 90902 transitions. [2023-12-20 11:41:15,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 11:41:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 56455 states and 90902 transitions. [2023-12-20 11:41:15,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 11:41:15,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:41:15,793 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:41:15,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 11:41:15,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-20 11:41:15,998 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:41:15,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:41:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1117499279, now seen corresponding path program 1 times [2023-12-20 11:41:15,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:41:15,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555596020] [2023-12-20 11:41:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:41:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:16,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:41:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:41:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:16,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:41:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:16,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:41:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:16,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:41:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:16,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 11:41:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:41:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 11:41:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:16,132 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:41:16,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:41:16,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555596020] [2023-12-20 11:41:16,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555596020] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:41:16,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685838268] [2023-12-20 11:41:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:16,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:41:16,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:41:16,150 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 11:41:16,179 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 11:41:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:16,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:41:16,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:41:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 11:41:16,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:41:16,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685838268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:41:16,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:41:16,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:41:16,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934419785] [2023-12-20 11:41:16,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:41:16,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:41:16,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:41:16,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:41:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:41:16,315 INFO L87 Difference]: Start difference. First operand 56455 states and 90902 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 11:41:19,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:41:19,526 INFO L93 Difference]: Finished difference Result 163896 states and 264344 transitions. [2023-12-20 11:41:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:41:19,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-12-20 11:41:19,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:41:20,020 INFO L225 Difference]: With dead ends: 163896 [2023-12-20 11:41:20,020 INFO L226 Difference]: Without dead ends: 109573 [2023-12-20 11:41:20,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 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 11:41:20,204 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4162 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4162 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:41:20,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4162 Valid, 4391 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:41:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109573 states. [2023-12-20 11:41:24,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109573 to 109183. [2023-12-20 11:41:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109183 states, 95913 states have (on average 1.5345886376195093) internal successors, (147187), 96943 states have internal predecessors, (147187), 7880 states have call successors, (7880), 4620 states have call predecessors, (7880), 5388 states have return successors, (19679), 7747 states have call predecessors, (19679), 7880 states have call successors, (19679) [2023-12-20 11:41:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109183 states to 109183 states and 174746 transitions. [2023-12-20 11:41:24,690 INFO L78 Accepts]: Start accepts. Automaton has 109183 states and 174746 transitions. Word has length 131 [2023-12-20 11:41:24,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:41:24,691 INFO L495 AbstractCegarLoop]: Abstraction has 109183 states and 174746 transitions. [2023-12-20 11:41:24,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 11:41:24,691 INFO L276 IsEmpty]: Start isEmpty. Operand 109183 states and 174746 transitions. [2023-12-20 11:41:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 11:41:24,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:41:24,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:41:24,919 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 11:41:25,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-20 11:41:25,117 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:41:25,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:41:25,117 INFO L85 PathProgramCache]: Analyzing trace with hash 433566319, now seen corresponding path program 1 times [2023-12-20 11:41:25,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:41:25,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689748610] [2023-12-20 11:41:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:25,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:41:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:25,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:41:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:41:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:41:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:25,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:41:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:25,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:41:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:25,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 11:41:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:25,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:41:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:25,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 11:41:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:41:25,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:41:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689748610] [2023-12-20 11:41:25,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689748610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:41:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565061919] [2023-12-20 11:41:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:25,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:41:25,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:41:25,236 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 11:41:25,251 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 11:41:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:25,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:41:25,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:41:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 11:41:25,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:41:25,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565061919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:41:25,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:41:25,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:41:25,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072452836] [2023-12-20 11:41:25,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:41:25,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:41:25,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:41:25,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:41:25,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:41:25,380 INFO L87 Difference]: Start difference. First operand 109183 states and 174746 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 11:41:31,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:41:31,927 INFO L93 Difference]: Finished difference Result 319181 states and 515201 transitions. [2023-12-20 11:41:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:41:31,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 131 [2023-12-20 11:41:31,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:41:33,064 INFO L225 Difference]: With dead ends: 319181 [2023-12-20 11:41:33,064 INFO L226 Difference]: Without dead ends: 212131 [2023-12-20 11:41:33,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 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 11:41:33,252 INFO L413 NwaCegarLoop]: 4395 mSDtfsCounter, 219 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 8581 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:41:33,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 8581 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:41:33,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212131 states. [2023-12-20 11:41:40,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212131 to 212131. [2023-12-20 11:41:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212131 states, 186258 states have (on average 1.5254056201612816) internal successors, (284119), 188057 states have internal predecessors, (284119), 15167 states have call successors, (15167), 9168 states have call predecessors, (15167), 10704 states have return successors, (41394), 15161 states have call predecessors, (41394), 15167 states have call successors, (41394) [2023-12-20 11:41:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212131 states to 212131 states and 340680 transitions. [2023-12-20 11:41:41,760 INFO L78 Accepts]: Start accepts. Automaton has 212131 states and 340680 transitions. Word has length 131 [2023-12-20 11:41:41,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:41:41,761 INFO L495 AbstractCegarLoop]: Abstraction has 212131 states and 340680 transitions. [2023-12-20 11:41:41,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 11:41:41,761 INFO L276 IsEmpty]: Start isEmpty. Operand 212131 states and 340680 transitions. [2023-12-20 11:41:42,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-20 11:41:42,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:41:42,517 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, 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] [2023-12-20 11:41:42,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 11:41:42,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:41:42,723 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:41:42,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:41:42,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1636424928, now seen corresponding path program 1 times [2023-12-20 11:41:42,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:41:42,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625413735] [2023-12-20 11:41:42,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:42,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:41:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:41:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 11:41:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 11:41:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 11:41:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 11:41:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 11:41:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:41:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-20 11:41:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:41:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-20 11:41:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-20 11:41:42,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:41:42,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625413735] [2023-12-20 11:41:42,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625413735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:41:42,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144236361] [2023-12-20 11:41:42,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:41:42,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:41:42,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:41:42,837 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 11:41:42,839 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 11:41:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:41:42,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:41:42,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:41:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 11:41:43,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:41:43,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144236361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:41:43,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:41:43,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:41:43,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404857248] [2023-12-20 11:41:43,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:41:43,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:41:43,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:41:43,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:41:43,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:41:43,089 INFO L87 Difference]: Start difference. First operand 212131 states and 340680 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-20 11:41:56,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:41:56,369 INFO L93 Difference]: Finished difference Result 627009 states and 1012915 transitions. [2023-12-20 11:41:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:41:56,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 169 [2023-12-20 11:41:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:41:58,978 INFO L225 Difference]: With dead ends: 627009 [2023-12-20 11:41:58,979 INFO L226 Difference]: Without dead ends: 417017 [2023-12-20 11:41:59,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 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 11:41:59,350 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4106 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4106 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:41:59,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4106 Valid, 4391 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:41:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417017 states.