/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/systemc/token_ring.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:07:32,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:07:32,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:07:32,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:07:32,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:07:32,815 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:07:32,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:07:32,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:07:32,818 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:07:32,821 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:07:32,821 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:07:32,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:07:32,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:07:32,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:07:32,824 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:07:32,824 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:07:32,824 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:07:32,825 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:07:32,825 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:07:32,825 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:07:32,825 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:07:32,826 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:07:32,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:07:32,826 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:07:32,826 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:07:32,826 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:07:32,827 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:07:32,827 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:07:32,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:07:32,828 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:07:32,829 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:07:32,829 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:07:32,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:07:32,829 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:07:32,829 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:07:32,829 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:07:32,830 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:07:32,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:07:32,830 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:07:32,830 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:07:32,830 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:07:32,830 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:07:32,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:07:32,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:07:33,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:07:33,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:07:33,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:07:33,104 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:07:33,105 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:07:33,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.10.cil-1.c [2023-12-15 23:07:34,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:07:34,477 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:07:34,477 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.10.cil-1.c [2023-12-15 23:07:34,490 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a551655/7884cba13f0d472cb6b68205b4fea719/FLAG06c47cd6f [2023-12-15 23:07:34,502 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a551655/7884cba13f0d472cb6b68205b4fea719 [2023-12-15 23:07:34,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:07:34,505 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:07:34,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:07:34,506 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:07:34,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:07:34,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:34,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f392681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34, skipping insertion in model container [2023-12-15 23:07:34,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:34,561 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:07:34,673 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.10.cil-1.c[671,684] [2023-12-15 23:07:34,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:07:34,791 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:07:34,799 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.10.cil-1.c[671,684] [2023-12-15 23:07:34,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:07:34,885 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:07:34,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34 WrapperNode [2023-12-15 23:07:34,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:07:34,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:07:34,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:07:34,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:07:34,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:34,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:34,949 INFO L138 Inliner]: procedures = 48, calls = 62, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 765 [2023-12-15 23:07:34,950 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:07:34,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:07:34,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:07:34,951 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:07:34,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:34,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:34,969 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:34,997 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]. [2023-12-15 23:07:34,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:34,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:35,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:35,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:35,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:35,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:35,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:07:35,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:07:35,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:07:35,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:07:35,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (1/1) ... [2023-12-15 23:07:35,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:07:35,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:07:35,080 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) [2023-12-15 23:07:35,097 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 [2023-12-15 23:07:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:07:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-15 23:07:35,126 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-15 23:07:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 23:07:35,126 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 23:07:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 23:07:35,127 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 23:07:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 23:07:35,128 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 23:07:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 23:07:35,129 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 23:07:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 23:07:35,129 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 23:07:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:07:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 23:07:35,129 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 23:07:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:07:35,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:07:35,267 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:07:35,269 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:07:35,971 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:07:36,044 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:07:36,044 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-15 23:07:36,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:07:36 BoogieIcfgContainer [2023-12-15 23:07:36,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:07:36,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:07:36,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:07:36,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:07:36,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:07:34" (1/3) ... [2023-12-15 23:07:36,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a471784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:07:36, skipping insertion in model container [2023-12-15 23:07:36,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:07:34" (2/3) ... [2023-12-15 23:07:36,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a471784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:07:36, skipping insertion in model container [2023-12-15 23:07:36,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:07:36" (3/3) ... [2023-12-15 23:07:36,054 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.10.cil-1.c [2023-12-15 23:07:36,070 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:07:36,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:07:36,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:07:36,146 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;@7f13844c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:07:36,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:07:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 310 states, 275 states have (on average 1.7345454545454546) internal successors, (477), 279 states have internal predecessors, (477), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-15 23:07:36,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:07:36,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:36,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:36,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:36,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:36,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2146509589, now seen corresponding path program 1 times [2023-12-15 23:07:36,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:36,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975962729] [2023-12-15 23:07:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:36,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:36,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:07:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:36,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:07:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:36,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:07:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:07:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:36,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:36,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:36,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975962729] [2023-12-15 23:07:36,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975962729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:36,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:36,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:07:36,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800016350] [2023-12-15 23:07:36,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:36,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:07:36,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:07:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:07:36,878 INFO L87 Difference]: Start difference. First operand has 310 states, 275 states have (on average 1.7345454545454546) internal successors, (477), 279 states have internal predecessors, (477), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:38,515 INFO L93 Difference]: Finished difference Result 725 states and 1249 transitions. [2023-12-15 23:07:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:07:38,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:07:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:38,530 INFO L225 Difference]: With dead ends: 725 [2023-12-15 23:07:38,530 INFO L226 Difference]: Without dead ends: 417 [2023-12-15 23:07:38,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:07:38,539 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 851 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:38,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 572 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 23:07:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-15 23:07:38,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 307. [2023-12-15 23:07:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 274 states have (on average 1.6313868613138687) internal successors, (447), 276 states have internal predecessors, (447), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-15 23:07:38,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 497 transitions. [2023-12-15 23:07:38,604 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 497 transitions. Word has length 141 [2023-12-15 23:07:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:38,605 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 497 transitions. [2023-12-15 23:07:38,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 497 transitions. [2023-12-15 23:07:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:07:38,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:38,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:38,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:07:38,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:38,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:38,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1730569005, now seen corresponding path program 1 times [2023-12-15 23:07:38,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:38,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329830054] [2023-12-15 23:07:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:38,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:38,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:38,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:07:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:38,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:07:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:38,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:07:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:07:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:38,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:38,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329830054] [2023-12-15 23:07:38,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329830054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:38,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:38,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:07:38,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663009199] [2023-12-15 23:07:38,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:38,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:07:38,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:38,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:07:38,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:07:38,856 INFO L87 Difference]: Start difference. First operand 307 states and 497 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:40,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:40,201 INFO L93 Difference]: Finished difference Result 712 states and 1170 transitions. [2023-12-15 23:07:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:07:40,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:07:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:40,205 INFO L225 Difference]: With dead ends: 712 [2023-12-15 23:07:40,205 INFO L226 Difference]: Without dead ends: 417 [2023-12-15 23:07:40,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:07:40,207 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 840 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:40,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 567 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 23:07:40,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-15 23:07:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 307. [2023-12-15 23:07:40,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 274 states have (on average 1.6277372262773722) internal successors, (446), 276 states have internal predecessors, (446), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-15 23:07:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 496 transitions. [2023-12-15 23:07:40,233 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 496 transitions. Word has length 141 [2023-12-15 23:07:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:40,234 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 496 transitions. [2023-12-15 23:07:40,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:40,234 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 496 transitions. [2023-12-15 23:07:40,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:07:40,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:40,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:40,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:07:40,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:40,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1979626641, now seen corresponding path program 1 times [2023-12-15 23:07:40,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:40,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780261670] [2023-12-15 23:07:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:40,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:07:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:07:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:07:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:07:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:40,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:40,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:40,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780261670] [2023-12-15 23:07:40,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780261670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:40,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:40,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:07:40,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090910007] [2023-12-15 23:07:40,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:40,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:07:40,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:40,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:07:40,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:07:40,588 INFO L87 Difference]: Start difference. First operand 307 states and 496 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:43,050 INFO L93 Difference]: Finished difference Result 1124 states and 1858 transitions. [2023-12-15 23:07:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:07:43,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:07:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:43,056 INFO L225 Difference]: With dead ends: 1124 [2023-12-15 23:07:43,056 INFO L226 Difference]: Without dead ends: 833 [2023-12-15 23:07:43,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:07:43,059 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1274 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:43,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 957 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 23:07:43,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-12-15 23:07:43,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 612. [2023-12-15 23:07:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 553 states have (on average 1.6383363471971066) internal successors, (906), 556 states have internal predecessors, (906), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-12-15 23:07:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 997 transitions. [2023-12-15 23:07:43,099 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 997 transitions. Word has length 141 [2023-12-15 23:07:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:43,099 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 997 transitions. [2023-12-15 23:07:43,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 997 transitions. [2023-12-15 23:07:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:07:43,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:43,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:43,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:07:43,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:43,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:43,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1805366959, now seen corresponding path program 1 times [2023-12-15 23:07:43,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:43,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366286999] [2023-12-15 23:07:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:43,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:43,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:07:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:43,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:07:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:07:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:07:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:43,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:43,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366286999] [2023-12-15 23:07:43,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366286999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:43,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:43,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:43,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852487260] [2023-12-15 23:07:43,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:43,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:43,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:43,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:43,384 INFO L87 Difference]: Start difference. First operand 612 states and 997 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:46,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:46,475 INFO L93 Difference]: Finished difference Result 1859 states and 3076 transitions. [2023-12-15 23:07:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:07:46,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:07:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:46,485 INFO L225 Difference]: With dead ends: 1859 [2023-12-15 23:07:46,485 INFO L226 Difference]: Without dead ends: 1263 [2023-12-15 23:07:46,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:07:46,498 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1301 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3191 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:46,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 1827 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3191 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 23:07:46,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2023-12-15 23:07:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 894. [2023-12-15 23:07:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 809 states have (on average 1.6316440049443757) internal successors, (1320), 813 states have internal predecessors, (1320), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2023-12-15 23:07:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1451 transitions. [2023-12-15 23:07:46,612 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1451 transitions. Word has length 141 [2023-12-15 23:07:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:46,613 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1451 transitions. [2023-12-15 23:07:46,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:46,613 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1451 transitions. [2023-12-15 23:07:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:07:46,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:46,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:46,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:07:46,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:46,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:46,617 INFO L85 PathProgramCache]: Analyzing trace with hash -245041939, now seen corresponding path program 1 times [2023-12-15 23:07:46,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:46,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987078045] [2023-12-15 23:07:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:46,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:07:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:07:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:07:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:07:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:46,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:46,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987078045] [2023-12-15 23:07:46,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987078045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:46,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:46,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:46,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295040530] [2023-12-15 23:07:46,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:46,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:46,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:46,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:46,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:46,898 INFO L87 Difference]: Start difference. First operand 894 states and 1451 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:49,837 INFO L93 Difference]: Finished difference Result 2936 states and 4850 transitions. [2023-12-15 23:07:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:07:49,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:07:49,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:49,849 INFO L225 Difference]: With dead ends: 2936 [2023-12-15 23:07:49,849 INFO L226 Difference]: Without dead ends: 2058 [2023-12-15 23:07:49,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:07:49,855 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 1403 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:49,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 1182 Invalid, 2736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 23:07:49,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2023-12-15 23:07:49,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1459. [2023-12-15 23:07:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1322 states have (on average 1.6255673222390317) internal successors, (2149), 1328 states have internal predecessors, (2149), 102 states have call successors, (102), 31 states have call predecessors, (102), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2023-12-15 23:07:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2364 transitions. [2023-12-15 23:07:49,950 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2364 transitions. Word has length 141 [2023-12-15 23:07:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:49,951 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2364 transitions. [2023-12-15 23:07:49,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2364 transitions. [2023-12-15 23:07:49,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:07:49,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:49,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:49,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:07:49,953 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:49,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:49,954 INFO L85 PathProgramCache]: Analyzing trace with hash 243005167, now seen corresponding path program 1 times [2023-12-15 23:07:49,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:49,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385089993] [2023-12-15 23:07:49,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:49,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:07:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:50,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:07:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:07:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:07:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:50,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:50,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385089993] [2023-12-15 23:07:50,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385089993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:50,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:50,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:50,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588392815] [2023-12-15 23:07:50,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:50,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:50,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:50,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:50,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:50,194 INFO L87 Difference]: Start difference. First operand 1459 states and 2364 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:51,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:51,777 INFO L93 Difference]: Finished difference Result 3485 states and 5746 transitions. [2023-12-15 23:07:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:07:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:07:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:51,786 INFO L225 Difference]: With dead ends: 3485 [2023-12-15 23:07:51,787 INFO L226 Difference]: Without dead ends: 2042 [2023-12-15 23:07:51,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:07:51,791 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 939 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:51,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 929 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 23:07:51,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2023-12-15 23:07:51,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1459. [2023-12-15 23:07:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1322 states have (on average 1.62178517397882) internal successors, (2144), 1328 states have internal predecessors, (2144), 102 states have call successors, (102), 31 states have call predecessors, (102), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2023-12-15 23:07:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2359 transitions. [2023-12-15 23:07:51,860 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2359 transitions. Word has length 141 [2023-12-15 23:07:51,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:51,860 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2359 transitions. [2023-12-15 23:07:51,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2359 transitions. [2023-12-15 23:07:51,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:07:51,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:51,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:51,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:07:51,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:51,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:51,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1039167119, now seen corresponding path program 1 times [2023-12-15 23:07:51,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:51,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468339138] [2023-12-15 23:07:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:51,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:07:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:07:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:52,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:07:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:52,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:07:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:52,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:52,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468339138] [2023-12-15 23:07:52,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468339138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:52,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:52,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:52,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909781079] [2023-12-15 23:07:52,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:52,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:52,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:52,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:52,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:52,096 INFO L87 Difference]: Start difference. First operand 1459 states and 2359 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:53,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:53,693 INFO L93 Difference]: Finished difference Result 3479 states and 5719 transitions. [2023-12-15 23:07:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:07:53,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:07:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:53,703 INFO L225 Difference]: With dead ends: 3479 [2023-12-15 23:07:53,703 INFO L226 Difference]: Without dead ends: 2036 [2023-12-15 23:07:53,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:07:53,709 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 937 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:53,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 929 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 23:07:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2023-12-15 23:07:53,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1459. [2023-12-15 23:07:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1322 states have (on average 1.6180030257186082) internal successors, (2139), 1328 states have internal predecessors, (2139), 102 states have call successors, (102), 31 states have call predecessors, (102), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2023-12-15 23:07:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2354 transitions. [2023-12-15 23:07:53,808 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2354 transitions. Word has length 141 [2023-12-15 23:07:53,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:53,808 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2354 transitions. [2023-12-15 23:07:53,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2354 transitions. [2023-12-15 23:07:53,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:07:53,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:53,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:53,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:07:53,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:53,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:53,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1413324463, now seen corresponding path program 1 times [2023-12-15 23:07:53,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:53,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169130010] [2023-12-15 23:07:53,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:53,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:07:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:54,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:07:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:54,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:07:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:07:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:54,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:54,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169130010] [2023-12-15 23:07:54,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169130010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:54,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:54,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:54,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177576029] [2023-12-15 23:07:54,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:54,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:54,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:54,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:54,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:54,034 INFO L87 Difference]: Start difference. First operand 1459 states and 2354 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:57,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:57,050 INFO L93 Difference]: Finished difference Result 4986 states and 8159 transitions. [2023-12-15 23:07:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:07:57,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:07:57,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:57,066 INFO L225 Difference]: With dead ends: 4986 [2023-12-15 23:07:57,066 INFO L226 Difference]: Without dead ends: 3543 [2023-12-15 23:07:57,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:07:57,071 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1285 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3111 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:57,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 1825 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3111 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 23:07:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2023-12-15 23:07:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 2605. [2023-12-15 23:07:57,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2364 states have (on average 1.612098138747885) internal successors, (3811), 2374 states have internal predecessors, (3811), 178 states have call successors, (178), 55 states have call predecessors, (178), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2023-12-15 23:07:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4200 transitions. [2023-12-15 23:07:57,221 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4200 transitions. Word has length 141 [2023-12-15 23:07:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:57,221 INFO L495 AbstractCegarLoop]: Abstraction has 2605 states and 4200 transitions. [2023-12-15 23:07:57,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4200 transitions. [2023-12-15 23:07:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:07:57,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:57,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:57,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:07:57,224 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:57,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash -308678223, now seen corresponding path program 1 times [2023-12-15 23:07:57,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:57,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225981187] [2023-12-15 23:07:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:07:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:07:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:07:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:07:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:57,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225981187] [2023-12-15 23:07:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225981187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:57,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:57,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:57,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177941702] [2023-12-15 23:07:57,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:57,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:57,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:57,423 INFO L87 Difference]: Start difference. First operand 2605 states and 4200 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:07:58,858 INFO L93 Difference]: Finished difference Result 6147 states and 10062 transitions. [2023-12-15 23:07:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:07:58,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:07:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:07:58,874 INFO L225 Difference]: With dead ends: 6147 [2023-12-15 23:07:58,874 INFO L226 Difference]: Without dead ends: 3558 [2023-12-15 23:07:58,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:07:58,883 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1067 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:07:58,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 780 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 23:07:58,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2023-12-15 23:07:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 2605. [2023-12-15 23:07:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2364 states have (on average 1.6082910321489001) internal successors, (3802), 2374 states have internal predecessors, (3802), 178 states have call successors, (178), 55 states have call predecessors, (178), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2023-12-15 23:07:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4191 transitions. [2023-12-15 23:07:59,006 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4191 transitions. Word has length 141 [2023-12-15 23:07:59,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:07:59,006 INFO L495 AbstractCegarLoop]: Abstraction has 2605 states and 4191 transitions. [2023-12-15 23:07:59,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:07:59,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4191 transitions. [2023-12-15 23:07:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:07:59,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:07:59,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:07:59,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:07:59,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:07:59,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:07:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash -641321361, now seen corresponding path program 1 times [2023-12-15 23:07:59,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:07:59,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961024061] [2023-12-15 23:07:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:07:59,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:07:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:07:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:59,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:07:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:07:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:59,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:07:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:59,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:07:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:07:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:07:59,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:07:59,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961024061] [2023-12-15 23:07:59,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961024061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:07:59,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:07:59,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:07:59,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363464989] [2023-12-15 23:07:59,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:07:59,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:07:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:07:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:07:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:07:59,240 INFO L87 Difference]: Start difference. First operand 2605 states and 4191 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:08:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:02,483 INFO L93 Difference]: Finished difference Result 9112 states and 14847 transitions. [2023-12-15 23:08:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:08:02,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:08:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:02,512 INFO L225 Difference]: With dead ends: 9112 [2023-12-15 23:08:02,513 INFO L226 Difference]: Without dead ends: 6523 [2023-12-15 23:08:02,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:08:02,522 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1277 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:02,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 1825 Invalid, 3136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3073 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 23:08:02,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2023-12-15 23:08:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 4907. [2023-12-15 23:08:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4907 states, 4458 states have (on average 1.6029609690444144) internal successors, (7146), 4476 states have internal predecessors, (7146), 330 states have call successors, (330), 103 states have call predecessors, (330), 118 states have return successors, (425), 343 states have call predecessors, (425), 328 states have call successors, (425) [2023-12-15 23:08:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 7901 transitions. [2023-12-15 23:08:02,754 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 7901 transitions. Word has length 141 [2023-12-15 23:08:02,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:02,754 INFO L495 AbstractCegarLoop]: Abstraction has 4907 states and 7901 transitions. [2023-12-15 23:08:02,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:08:02,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 7901 transitions. [2023-12-15 23:08:02,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:08:02,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:02,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:08:02,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:08:02,759 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:02,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:02,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1287610865, now seen corresponding path program 1 times [2023-12-15 23:08:02,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:02,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336736378] [2023-12-15 23:08:02,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:02,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:02,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:02,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:08:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:08:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:08:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:08:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:08:02,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:02,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336736378] [2023-12-15 23:08:02,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336736378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:02,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:02,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:02,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714285021] [2023-12-15 23:08:02,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:02,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:02,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:02,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:02,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:02,971 INFO L87 Difference]: Start difference. First operand 4907 states and 7901 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:08:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:06,024 INFO L93 Difference]: Finished difference Result 17380 states and 28355 transitions. [2023-12-15 23:08:06,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:08:06,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:08:06,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:06,077 INFO L225 Difference]: With dead ends: 17380 [2023-12-15 23:08:06,077 INFO L226 Difference]: Without dead ends: 12489 [2023-12-15 23:08:06,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:08:06,097 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1276 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3060 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:06,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1825 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3060 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 23:08:06,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12489 states. [2023-12-15 23:08:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12489 to 9524. [2023-12-15 23:08:06,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9524 states, 8659 states have (on average 1.5997228317357663) internal successors, (13852), 8693 states have internal predecessors, (13852), 634 states have call successors, (634), 199 states have call predecessors, (634), 230 states have return successors, (907), 663 states have call predecessors, (907), 632 states have call successors, (907) [2023-12-15 23:08:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 15393 transitions. [2023-12-15 23:08:06,573 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 15393 transitions. Word has length 141 [2023-12-15 23:08:06,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:06,573 INFO L495 AbstractCegarLoop]: Abstraction has 9524 states and 15393 transitions. [2023-12-15 23:08:06,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:08:06,574 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 15393 transitions. [2023-12-15 23:08:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:08:06,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:06,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:08:06,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:08:06,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:06,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1005470161, now seen corresponding path program 1 times [2023-12-15 23:08:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652791760] [2023-12-15 23:08:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:06,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:06,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:08:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:06,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:08:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:06,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:08:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:06,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:08:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:08:06,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:06,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652791760] [2023-12-15 23:08:06,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652791760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:06,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:06,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:06,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624229485] [2023-12-15 23:08:06,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:06,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:06,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:06,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:06,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:06,805 INFO L87 Difference]: Start difference. First operand 9524 states and 15393 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:08:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:09,804 INFO L93 Difference]: Finished difference Result 33915 states and 55561 transitions. [2023-12-15 23:08:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:08:09,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:08:09,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:09,886 INFO L225 Difference]: With dead ends: 33915 [2023-12-15 23:08:09,886 INFO L226 Difference]: Without dead ends: 24407 [2023-12-15 23:08:09,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:08:09,920 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 1364 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:09,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 1182 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 23:08:09,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24407 states. [2023-12-15 23:08:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24407 to 18789. [2023-12-15 23:08:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18789 states, 17092 states have (on average 1.597823543178095) internal successors, (27310), 17158 states have internal predecessors, (27310), 1242 states have call successors, (1242), 391 states have call predecessors, (1242), 454 states have return successors, (2033), 1303 states have call predecessors, (2033), 1240 states have call successors, (2033) [2023-12-15 23:08:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18789 states to 18789 states and 30585 transitions. [2023-12-15 23:08:10,931 INFO L78 Accepts]: Start accepts. Automaton has 18789 states and 30585 transitions. Word has length 141 [2023-12-15 23:08:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:10,931 INFO L495 AbstractCegarLoop]: Abstraction has 18789 states and 30585 transitions. [2023-12-15 23:08:10,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:08:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 18789 states and 30585 transitions. [2023-12-15 23:08:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:08:10,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:10,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:08:10,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:08:10,945 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:10,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:10,945 INFO L85 PathProgramCache]: Analyzing trace with hash 721674801, now seen corresponding path program 1 times [2023-12-15 23:08:10,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:10,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155929492] [2023-12-15 23:08:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:10,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:11,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:11,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:08:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:11,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:08:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:11,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:08:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:11,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:08:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:08:11,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:11,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155929492] [2023-12-15 23:08:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155929492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:11,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:11,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353975880] [2023-12-15 23:08:11,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:11,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:11,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:11,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:11,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:11,156 INFO L87 Difference]: Start difference. First operand 18789 states and 30585 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:08:15,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:15,487 INFO L93 Difference]: Finished difference Result 74408 states and 122669 transitions. [2023-12-15 23:08:15,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 23:08:15,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:08:15,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:15,695 INFO L225 Difference]: With dead ends: 74408 [2023-12-15 23:08:15,695 INFO L226 Difference]: Without dead ends: 55635 [2023-12-15 23:08:15,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:08:15,763 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1358 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 3569 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 3634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:15,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 1814 Invalid, 3634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3569 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 23:08:15,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55635 states. [2023-12-15 23:08:17,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55635 to 36679. [2023-12-15 23:08:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36679 states, 33382 states have (on average 1.5946917500449345) internal successors, (53234), 33512 states have internal predecessors, (53234), 2394 states have call successors, (2394), 775 states have call predecessors, (2394), 902 states have return successors, (4707), 2519 states have call predecessors, (4707), 2392 states have call successors, (4707) [2023-12-15 23:08:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36679 states to 36679 states and 60335 transitions. [2023-12-15 23:08:17,708 INFO L78 Accepts]: Start accepts. Automaton has 36679 states and 60335 transitions. Word has length 141 [2023-12-15 23:08:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:17,710 INFO L495 AbstractCegarLoop]: Abstraction has 36679 states and 60335 transitions. [2023-12-15 23:08:17,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:08:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand 36679 states and 60335 transitions. [2023-12-15 23:08:17,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:08:17,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:17,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:08:17,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:08:17,733 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:17,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:17,733 INFO L85 PathProgramCache]: Analyzing trace with hash -925688141, now seen corresponding path program 1 times [2023-12-15 23:08:17,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:17,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820025497] [2023-12-15 23:08:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:17,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:17,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:08:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:08:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:08:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:08:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:08:17,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:17,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820025497] [2023-12-15 23:08:17,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820025497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:17,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:17,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:17,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016956732] [2023-12-15 23:08:17,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:17,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:17,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:17,922 INFO L87 Difference]: Start difference. First operand 36679 states and 60335 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:08:20,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:20,681 INFO L93 Difference]: Finished difference Result 84579 states and 141867 transitions. [2023-12-15 23:08:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:08:20,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 23:08:20,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:20,912 INFO L225 Difference]: With dead ends: 84579 [2023-12-15 23:08:20,913 INFO L226 Difference]: Without dead ends: 47916 [2023-12-15 23:08:21,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:08:21,030 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 940 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:21,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 928 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 23:08:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47916 states. [2023-12-15 23:08:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47916 to 36679. [2023-12-15 23:08:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36679 states, 33382 states have (on average 1.5908273920076688) internal successors, (53105), 33512 states have internal predecessors, (53105), 2394 states have call successors, (2394), 775 states have call predecessors, (2394), 902 states have return successors, (4707), 2519 states have call predecessors, (4707), 2392 states have call successors, (4707) [2023-12-15 23:08:23,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36679 states to 36679 states and 60206 transitions. [2023-12-15 23:08:23,113 INFO L78 Accepts]: Start accepts. Automaton has 36679 states and 60206 transitions. Word has length 141 [2023-12-15 23:08:23,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:23,113 INFO L495 AbstractCegarLoop]: Abstraction has 36679 states and 60206 transitions. [2023-12-15 23:08:23,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:08:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 36679 states and 60206 transitions. [2023-12-15 23:08:23,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 23:08:23,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:23,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:08:23,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:08:23,135 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:23,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:23,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1237928433, now seen corresponding path program 1 times [2023-12-15 23:08:23,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:23,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912315334] [2023-12-15 23:08:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:23,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:23,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:08:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:08:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:23,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 23:08:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 23:08:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:08:23,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:23,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912315334] [2023-12-15 23:08:23,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912315334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:23,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:23,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:23,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726995062] [2023-12-15 23:08:23,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:23,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:23,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:23,342 INFO L87 Difference]: Start difference. First operand 36679 states and 60206 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Received shutdown request... [2023-12-15 23:08:24,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 23:08:24,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-15 23:08:24,853 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 852 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:24,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 109 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 23:08:24,855 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:08:24,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:08:24,855 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (36679states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. [2023-12-15 23:08:24,856 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:08:24,860 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:08:24,862 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:08:24,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:08:24 BoogieIcfgContainer [2023-12-15 23:08:24,864 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:08:24,864 INFO L158 Benchmark]: Toolchain (without parser) took 50359.11ms. Allocated memory was 206.6MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 153.3MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 569.1MB. Max. memory is 8.0GB. [2023-12-15 23:08:24,865 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 206.6MB. Free memory is still 154.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:08:24,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.50ms. Allocated memory is still 206.6MB. Free memory was 152.9MB in the beginning and 130.9MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-15 23:08:24,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.51ms. Allocated memory is still 206.6MB. Free memory was 130.9MB in the beginning and 127.1MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 23:08:24,865 INFO L158 Benchmark]: Boogie Preprocessor took 79.54ms. Allocated memory is still 206.6MB. Free memory was 127.1MB in the beginning and 122.5MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 23:08:24,866 INFO L158 Benchmark]: RCFGBuilder took 1014.19ms. Allocated memory was 206.6MB in the beginning and 300.9MB in the end (delta: 94.4MB). Free memory was 122.5MB in the beginning and 221.6MB in the end (delta: -99.1MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. [2023-12-15 23:08:24,866 INFO L158 Benchmark]: TraceAbstraction took 48817.09ms. Allocated memory was 300.9MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 221.0MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 543.2MB. Max. memory is 8.0GB. [2023-12-15 23:08:24,867 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 206.6MB. Free memory is still 154.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 379.50ms. Allocated memory is still 206.6MB. Free memory was 152.9MB in the beginning and 130.9MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.51ms. Allocated memory is still 206.6MB. Free memory was 130.9MB in the beginning and 127.1MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 79.54ms. Allocated memory is still 206.6MB. Free memory was 127.1MB in the beginning and 122.5MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1014.19ms. Allocated memory was 206.6MB in the beginning and 300.9MB in the end (delta: 94.4MB). Free memory was 122.5MB in the beginning and 221.6MB in the end (delta: -99.1MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. * TraceAbstraction took 48817.09ms. Allocated memory was 300.9MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 221.0MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 543.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 20). Cancelled while NwaCegarLoop was constructing difference of abstraction (36679states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 310 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.8s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 38.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17217 SdHoareTripleChecker+Valid, 25.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16964 mSDsluCounter, 17251 SdHoareTripleChecker+Invalid, 21.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12918 mSDsCounter, 1034 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32438 IncrementalHoareTripleChecker+Invalid, 33472 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1034 mSolverCounterUnsat, 4333 mSDtfsCounter, 32438 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 359 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36679occurred in iteration=13, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 44852 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 2115 NumberOfCodeBlocks, 2115 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2100 ConstructedInterpolants, 0 QuantifiedInterpolants, 6083 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown