/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/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:51:42,288 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:51:42,357 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 17:51:42,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:51:42,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:51:42,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:51:42,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:51:42,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:51:42,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:51:42,387 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:51:42,388 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:51:42,388 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:51:42,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:51:42,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:51:42,389 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:51:42,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:51:42,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:51:42,390 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:51:42,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:51:42,391 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:51:42,391 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:51:42,391 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:51:42,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:51:42,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:51:42,392 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:51:42,392 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:51:42,392 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:51:42,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:51:42,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:51:42,392 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:51:42,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:51:42,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:51:42,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:51:42,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:51:42,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:51:42,394 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:51:42,394 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:51:42,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:51:42,394 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:51:42,394 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:51:42,394 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:51:42,394 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:51:42,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:51:42,395 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:51:42,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:51:42,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:51:42,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:51:42,603 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:51:42,604 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:51:42,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label01.c [2023-12-15 17:51:43,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:51:44,083 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:51:44,083 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label01.c [2023-12-15 17:51:44,109 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7ca9cc59/99779af64b7442dfa4464e04bc6f617c/FLAG70000dba7 [2023-12-15 17:51:44,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7ca9cc59/99779af64b7442dfa4464e04bc6f617c [2023-12-15 17:51:44,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:51:44,124 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:51:44,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:51:44,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:51:44,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:51:44,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:51:44" (1/1) ... [2023-12-15 17:51:44,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ccd62d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:44, skipping insertion in model container [2023-12-15 17:51:44,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:51:44" (1/1) ... [2023-12-15 17:51:44,237 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:51:44,493 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label01.c[8616,8629] [2023-12-15 17:51:44,534 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label01.c[14171,14184] [2023-12-15 17:51:45,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:51:45,062 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:51:45,092 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label01.c[8616,8629] [2023-12-15 17:51:45,101 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label01.c[14171,14184] [2023-12-15 17:51:45,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:51:45,412 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:51:45,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45 WrapperNode [2023-12-15 17:51:45,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:51:45,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:51:45,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:51:45,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:51:45,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:45,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:45,761 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5035 [2023-12-15 17:51:45,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:51:45,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:51:45,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:51:45,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:51:45,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:45,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:45,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:45,996 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 17:51:45,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:45,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:46,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:46,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:46,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:46,152 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:46,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:51:46,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:51:46,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:51:46,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:51:46,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (1/1) ... [2023-12-15 17:51:46,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:51:46,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:51:46,213 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 17:51:46,232 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 17:51:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:51:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:51:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:51:46,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:51:46,331 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:51:46,332 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:51:49,347 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:51:49,386 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:51:49,386 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 17:51:49,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:51:49 BoogieIcfgContainer [2023-12-15 17:51:49,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:51:49,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:51:49,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:51:49,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:51:49,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:51:44" (1/3) ... [2023-12-15 17:51:49,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e634e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:51:49, skipping insertion in model container [2023-12-15 17:51:49,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:51:45" (2/3) ... [2023-12-15 17:51:49,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e634e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:51:49, skipping insertion in model container [2023-12-15 17:51:49,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:51:49" (3/3) ... [2023-12-15 17:51:49,405 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label01.c [2023-12-15 17:51:49,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:51:49,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:51:49,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:51:49,507 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;@4a566235, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:51:49,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:51:49,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:49,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-15 17:51:49,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:49,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:49,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:49,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:49,524 INFO L85 PathProgramCache]: Analyzing trace with hash 439922616, now seen corresponding path program 1 times [2023-12-15 17:51:49,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:49,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080368084] [2023-12-15 17:51:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:49,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:49,662 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 17:51:49,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:49,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080368084] [2023-12-15 17:51:49,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080368084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:49,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:49,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:51:49,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223991576] [2023-12-15 17:51:49,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:49,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 17:51:49,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 17:51:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:51:49,687 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:49,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:49,742 INFO L93 Difference]: Finished difference Result 1613 states and 3180 transitions. [2023-12-15 17:51:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 17:51:49,762 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-15 17:51:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:49,779 INFO L225 Difference]: With dead ends: 1613 [2023-12-15 17:51:49,779 INFO L226 Difference]: Without dead ends: 816 [2023-12-15 17:51:49,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:51:49,789 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:49,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1545 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-15 17:51:49,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-15 17:51:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-12-15 17:51:49,866 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-12-15 17:51:49,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:49,867 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-12-15 17:51:49,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-12-15 17:51:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-15 17:51:49,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:49,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:49,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:51:49,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:49,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash -839941062, now seen corresponding path program 1 times [2023-12-15 17:51:49,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:49,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072733117] [2023-12-15 17:51:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:49,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:51:50,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:50,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072733117] [2023-12-15 17:51:50,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072733117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:50,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:50,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:51:50,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938732447] [2023-12-15 17:51:50,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:50,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:51:50,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:50,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:51:50,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:51:50,115 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:50,188 INFO L93 Difference]: Finished difference Result 889 states and 1660 transitions. [2023-12-15 17:51:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:51:50,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-15 17:51:50,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:50,191 INFO L225 Difference]: With dead ends: 889 [2023-12-15 17:51:50,192 INFO L226 Difference]: Without dead ends: 851 [2023-12-15 17:51:50,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:51:50,193 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 55 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:50,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4592 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:50,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-12-15 17:51:50,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 816. [2023-12-15 17:51:50,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-12-15 17:51:50,211 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-12-15 17:51:50,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:50,211 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-12-15 17:51:50,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,212 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-12-15 17:51:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-15 17:51:50,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:50,215 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] [2023-12-15 17:51:50,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:51:50,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:50,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash -562664075, now seen corresponding path program 1 times [2023-12-15 17:51:50,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:50,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561114378] [2023-12-15 17:51:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:50,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:50,381 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 17:51:50,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:50,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561114378] [2023-12-15 17:51:50,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561114378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:50,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:50,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:51:50,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115096673] [2023-12-15 17:51:50,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:50,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:51:50,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:50,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:51:50,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:51:50,383 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:50,511 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2023-12-15 17:51:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 17:51:50,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-15 17:51:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:50,514 INFO L225 Difference]: With dead ends: 1096 [2023-12-15 17:51:50,514 INFO L226 Difference]: Without dead ends: 1061 [2023-12-15 17:51:50,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:51:50,516 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:50,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:51:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-12-15 17:51:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2023-12-15 17:51:50,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2023-12-15 17:51:50,529 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2023-12-15 17:51:50,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:50,529 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2023-12-15 17:51:50,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,530 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2023-12-15 17:51:50,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-15 17:51:50,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:50,530 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] [2023-12-15 17:51:50,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:51:50,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:50,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:50,531 INFO L85 PathProgramCache]: Analyzing trace with hash 323015045, now seen corresponding path program 1 times [2023-12-15 17:51:50,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:50,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223786908] [2023-12-15 17:51:50,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:50,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:51:50,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:50,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223786908] [2023-12-15 17:51:50,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223786908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:50,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:50,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:51:50,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448056243] [2023-12-15 17:51:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:50,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:51:50,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:51:50,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:50,569 INFO L87 Difference]: Start difference. First operand 849 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:50,591 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2023-12-15 17:51:50,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:51:50,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-15 17:51:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:50,594 INFO L225 Difference]: With dead ends: 974 [2023-12-15 17:51:50,594 INFO L226 Difference]: Without dead ends: 906 [2023-12-15 17:51:50,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:50,596 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:50,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:50,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-15 17:51:50,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-15 17:51:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2023-12-15 17:51:50,610 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2023-12-15 17:51:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:50,610 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2023-12-15 17:51:50,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2023-12-15 17:51:50,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-15 17:51:50,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:50,612 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] [2023-12-15 17:51:50,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:51:50,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:50,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash 325159997, now seen corresponding path program 1 times [2023-12-15 17:51:50,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:50,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973779739] [2023-12-15 17:51:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:50,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:50,750 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 17:51:50,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:50,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973779739] [2023-12-15 17:51:50,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973779739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:50,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:50,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:51:50,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235950449] [2023-12-15 17:51:50,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:50,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:51:50,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:50,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:51:50,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:51:50,753 INFO L87 Difference]: Start difference. First operand 904 states and 1661 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:50,843 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2023-12-15 17:51:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:51:50,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-15 17:51:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:50,846 INFO L225 Difference]: With dead ends: 1029 [2023-12-15 17:51:50,846 INFO L226 Difference]: Without dead ends: 906 [2023-12-15 17:51:50,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:51:50,847 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 4440 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:50,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 1669 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-15 17:51:50,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-15 17:51:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2023-12-15 17:51:50,861 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2023-12-15 17:51:50,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:50,861 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2023-12-15 17:51:50,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:50,862 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2023-12-15 17:51:50,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-15 17:51:50,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:50,862 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] [2023-12-15 17:51:50,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:51:50,863 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:50,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:50,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1361670552, now seen corresponding path program 1 times [2023-12-15 17:51:50,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:50,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364059331] [2023-12-15 17:51:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:50,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:51,082 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 17:51:51,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:51,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364059331] [2023-12-15 17:51:51,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364059331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:51,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:51,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:51:51,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061942411] [2023-12-15 17:51:51,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:51,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:51:51,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:51,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:51:51,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:51:51,083 INFO L87 Difference]: Start difference. First operand 904 states and 1659 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:51,126 INFO L93 Difference]: Finished difference Result 912 states and 1668 transitions. [2023-12-15 17:51:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:51:51,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-15 17:51:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:51,141 INFO L225 Difference]: With dead ends: 912 [2023-12-15 17:51:51,141 INFO L226 Difference]: Without dead ends: 910 [2023-12-15 17:51:51,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:51:51,142 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:51,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:51,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-15 17:51:51,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-12-15 17:51:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2023-12-15 17:51:51,154 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2023-12-15 17:51:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:51,155 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2023-12-15 17:51:51,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,155 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2023-12-15 17:51:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-15 17:51:51,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:51,155 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] [2023-12-15 17:51:51,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:51:51,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:51,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash -2079230275, now seen corresponding path program 1 times [2023-12-15 17:51:51,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:51,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250370074] [2023-12-15 17:51:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:51,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:51,208 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 17:51:51,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:51,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250370074] [2023-12-15 17:51:51,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250370074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:51,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:51,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:51:51,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241457365] [2023-12-15 17:51:51,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:51,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:51:51,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:51,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:51:51,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:51,210 INFO L87 Difference]: Start difference. First operand 908 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:51,231 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2023-12-15 17:51:51,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:51:51,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-15 17:51:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:51,234 INFO L225 Difference]: With dead ends: 1046 [2023-12-15 17:51:51,234 INFO L226 Difference]: Without dead ends: 974 [2023-12-15 17:51:51,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:51,235 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:51,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-15 17:51:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2023-12-15 17:51:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2023-12-15 17:51:51,248 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2023-12-15 17:51:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:51,248 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2023-12-15 17:51:51,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2023-12-15 17:51:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-15 17:51:51,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:51,249 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] [2023-12-15 17:51:51,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:51:51,249 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:51,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:51,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1630024893, now seen corresponding path program 1 times [2023-12-15 17:51:51,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:51,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302996873] [2023-12-15 17:51:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:51,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:51,276 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 17:51:51,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:51,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302996873] [2023-12-15 17:51:51,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302996873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:51,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:51,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:51:51,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214466255] [2023-12-15 17:51:51,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:51,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:51:51,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:51,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:51:51,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:51,277 INFO L87 Difference]: Start difference. First operand 972 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:51,297 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2023-12-15 17:51:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:51:51,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-15 17:51:51,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:51,301 INFO L225 Difference]: With dead ends: 1326 [2023-12-15 17:51:51,301 INFO L226 Difference]: Without dead ends: 1137 [2023-12-15 17:51:51,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:51,302 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:51,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:51,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-12-15 17:51:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2023-12-15 17:51:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2023-12-15 17:51:51,317 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2023-12-15 17:51:51,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:51,318 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2023-12-15 17:51:51,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2023-12-15 17:51:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-15 17:51:51,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:51,318 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] [2023-12-15 17:51:51,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:51:51,318 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:51,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:51,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1776208963, now seen corresponding path program 1 times [2023-12-15 17:51:51,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:51,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152634619] [2023-12-15 17:51:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:51,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:51,345 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 17:51:51,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:51,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152634619] [2023-12-15 17:51:51,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152634619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:51,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:51,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:51:51,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096024387] [2023-12-15 17:51:51,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:51,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:51:51,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:51,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:51:51,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:51,347 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:51,372 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2023-12-15 17:51:51,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:51:51,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-15 17:51:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:51,376 INFO L225 Difference]: With dead ends: 1791 [2023-12-15 17:51:51,377 INFO L226 Difference]: Without dead ends: 1439 [2023-12-15 17:51:51,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:51,378 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:51,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-12-15 17:51:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2023-12-15 17:51:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2023-12-15 17:51:51,399 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2023-12-15 17:51:51,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:51,400 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2023-12-15 17:51:51,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2023-12-15 17:51:51,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-15 17:51:51,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:51,400 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] [2023-12-15 17:51:51,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:51:51,400 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:51,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2039286339, now seen corresponding path program 1 times [2023-12-15 17:51:51,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:51,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995441587] [2023-12-15 17:51:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:51,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:51,425 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 17:51:51,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995441587] [2023-12-15 17:51:51,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995441587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:51,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:51,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:51:51,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217682115] [2023-12-15 17:51:51,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:51,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:51:51,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:51,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:51:51,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:51,427 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:51,457 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2023-12-15 17:51:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:51:51,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-15 17:51:51,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:51,463 INFO L225 Difference]: With dead ends: 2649 [2023-12-15 17:51:51,463 INFO L226 Difference]: Without dead ends: 1995 [2023-12-15 17:51:51,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:51,464 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:51,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-12-15 17:51:51,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2023-12-15 17:51:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2023-12-15 17:51:51,498 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2023-12-15 17:51:51,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:51,498 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2023-12-15 17:51:51,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:51,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2023-12-15 17:51:51,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-15 17:51:51,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:51,499 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] [2023-12-15 17:51:51,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:51:51,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:51,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:51,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2145314009, now seen corresponding path program 1 times [2023-12-15 17:51:51,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:51,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978443705] [2023-12-15 17:51:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:51,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:51,529 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 17:51:51,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:51,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978443705] [2023-12-15 17:51:51,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978443705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:51,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:51,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:51:51,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596466399] [2023-12-15 17:51:51,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:51,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:51:51,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:51,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:51:51,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:51,530 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:54,449 INFO L93 Difference]: Finished difference Result 3497 states and 6086 transitions. [2023-12-15 17:51:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:51:54,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-15 17:51:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:54,457 INFO L225 Difference]: With dead ends: 3497 [2023-12-15 17:51:54,457 INFO L226 Difference]: Without dead ends: 2744 [2023-12-15 17:51:54,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:54,459 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 851 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:54,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 157 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 17:51:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2023-12-15 17:51:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2744. [2023-12-15 17:51:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2742 states have (on average 1.6732312180889861) internal successors, (4588), 2743 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4588 transitions. [2023-12-15 17:51:54,501 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4588 transitions. Word has length 47 [2023-12-15 17:51:54,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:54,501 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 4588 transitions. [2023-12-15 17:51:54,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4588 transitions. [2023-12-15 17:51:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 17:51:54,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:54,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:54,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:51:54,502 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:54,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1254660810, now seen corresponding path program 1 times [2023-12-15 17:51:54,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:54,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385925143] [2023-12-15 17:51:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:54,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:51:54,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:54,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385925143] [2023-12-15 17:51:54,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385925143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:54,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:54,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:51:54,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328634618] [2023-12-15 17:51:54,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:54,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:51:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:54,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:51:54,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:51:54,573 INFO L87 Difference]: Start difference. First operand 2744 states and 4588 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:54,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:54,716 INFO L93 Difference]: Finished difference Result 7506 states and 11449 transitions. [2023-12-15 17:51:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:51:54,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-15 17:51:54,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:54,735 INFO L225 Difference]: With dead ends: 7506 [2023-12-15 17:51:54,736 INFO L226 Difference]: Without dead ends: 6640 [2023-12-15 17:51:54,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:51:54,739 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4635 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:54,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4635 Valid, 3299 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:54,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2023-12-15 17:51:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3784. [2023-12-15 17:51:54,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3782 states have (on average 1.6044420941300899) internal successors, (6068), 3783 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:54,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 6068 transitions. [2023-12-15 17:51:54,827 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 6068 transitions. Word has length 61 [2023-12-15 17:51:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:54,828 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 6068 transitions. [2023-12-15 17:51:54,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:54,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 6068 transitions. [2023-12-15 17:51:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 17:51:54,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:54,829 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:54,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:51:54,829 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:54,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1840372938, now seen corresponding path program 1 times [2023-12-15 17:51:54,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:54,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144689352] [2023-12-15 17:51:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:54,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 17:51:54,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:54,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144689352] [2023-12-15 17:51:54,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144689352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:54,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:54,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:51:54,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837719761] [2023-12-15 17:51:54,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:54,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:51:54,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:54,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:51:54,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:51:54,911 INFO L87 Difference]: Start difference. First operand 3784 states and 6068 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:55,065 INFO L93 Difference]: Finished difference Result 8714 states and 13177 transitions. [2023-12-15 17:51:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:51:55,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-15 17:51:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:55,093 INFO L225 Difference]: With dead ends: 8714 [2023-12-15 17:51:55,093 INFO L226 Difference]: Without dead ends: 7504 [2023-12-15 17:51:55,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:51:55,099 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:55,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2023-12-15 17:51:55,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 5424. [2023-12-15 17:51:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5422 states have (on average 1.5485060863150129) internal successors, (8396), 5423 states have internal predecessors, (8396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 8396 transitions. [2023-12-15 17:51:55,306 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 8396 transitions. Word has length 61 [2023-12-15 17:51:55,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:55,306 INFO L495 AbstractCegarLoop]: Abstraction has 5424 states and 8396 transitions. [2023-12-15 17:51:55,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 8396 transitions. [2023-12-15 17:51:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 17:51:55,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:55,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:55,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:51:55,308 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:55,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:55,309 INFO L85 PathProgramCache]: Analyzing trace with hash -951639498, now seen corresponding path program 1 times [2023-12-15 17:51:55,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:55,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763581298] [2023-12-15 17:51:55,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:55,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 17:51:55,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:55,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763581298] [2023-12-15 17:51:55,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763581298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:55,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:55,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:51:55,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266383162] [2023-12-15 17:51:55,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:55,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:51:55,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:55,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:51:55,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:51:55,388 INFO L87 Difference]: Start difference. First operand 5424 states and 8396 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:55,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:55,576 INFO L93 Difference]: Finished difference Result 9922 states and 14897 transitions. [2023-12-15 17:51:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:51:55,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-15 17:51:55,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:55,589 INFO L225 Difference]: With dead ends: 9922 [2023-12-15 17:51:55,589 INFO L226 Difference]: Without dead ends: 8712 [2023-12-15 17:51:55,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:51:55,593 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4669 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 3308 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:55,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 3308 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:55,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8712 states. [2023-12-15 17:51:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8712 to 6632. [2023-12-15 17:51:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 6630 states have (on average 1.5257918552036198) internal successors, (10116), 6631 states have internal predecessors, (10116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 10116 transitions. [2023-12-15 17:51:55,767 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 10116 transitions. Word has length 61 [2023-12-15 17:51:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:55,767 INFO L495 AbstractCegarLoop]: Abstraction has 6632 states and 10116 transitions. [2023-12-15 17:51:55,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 10116 transitions. [2023-12-15 17:51:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 17:51:55,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:55,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:55,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:51:55,769 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:55,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1214716874, now seen corresponding path program 1 times [2023-12-15 17:51:55,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:55,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322773153] [2023-12-15 17:51:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:55,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 17:51:55,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:55,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322773153] [2023-12-15 17:51:55,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322773153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:55,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:55,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:51:55,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809423698] [2023-12-15 17:51:55,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:55,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:51:55,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:55,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:51:55,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:51:55,842 INFO L87 Difference]: Start difference. First operand 6632 states and 10116 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:56,043 INFO L93 Difference]: Finished difference Result 11130 states and 16617 transitions. [2023-12-15 17:51:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:51:56,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-15 17:51:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:56,056 INFO L225 Difference]: With dead ends: 11130 [2023-12-15 17:51:56,056 INFO L226 Difference]: Without dead ends: 9920 [2023-12-15 17:51:56,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:51:56,059 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4637 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:56,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3350 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:56,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2023-12-15 17:51:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 7840. [2023-12-15 17:51:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.5100791018116866) internal successors, (11836), 7839 states have internal predecessors, (11836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11836 transitions. [2023-12-15 17:51:56,213 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11836 transitions. Word has length 61 [2023-12-15 17:51:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:56,214 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11836 transitions. [2023-12-15 17:51:56,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,214 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11836 transitions. [2023-12-15 17:51:56,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 17:51:56,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:56,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:56,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:51:56,215 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:56,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:56,215 INFO L85 PathProgramCache]: Analyzing trace with hash 673152430, now seen corresponding path program 1 times [2023-12-15 17:51:56,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:56,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691325475] [2023-12-15 17:51:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:56,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:51:56,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:56,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691325475] [2023-12-15 17:51:56,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691325475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:56,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:56,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:51:56,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336575157] [2023-12-15 17:51:56,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:56,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:51:56,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:56,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:51:56,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:56,263 INFO L87 Difference]: Start difference. First operand 7840 states and 11836 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:56,367 INFO L93 Difference]: Finished difference Result 14148 states and 20830 transitions. [2023-12-15 17:51:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:51:56,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 17:51:56,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:56,378 INFO L225 Difference]: With dead ends: 14148 [2023-12-15 17:51:56,378 INFO L226 Difference]: Without dead ends: 7842 [2023-12-15 17:51:56,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:56,385 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:56,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2023-12-15 17:51:56,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 7840. [2023-12-15 17:51:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.4942587394743556) internal successors, (11712), 7839 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11712 transitions. [2023-12-15 17:51:56,532 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11712 transitions. Word has length 62 [2023-12-15 17:51:56,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:56,532 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11712 transitions. [2023-12-15 17:51:56,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11712 transitions. [2023-12-15 17:51:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 17:51:56,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:56,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:56,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 17:51:56,533 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:56,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:56,534 INFO L85 PathProgramCache]: Analyzing trace with hash 767645374, now seen corresponding path program 1 times [2023-12-15 17:51:56,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:56,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724835120] [2023-12-15 17:51:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:56,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:51:56,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:56,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724835120] [2023-12-15 17:51:56,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724835120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:56,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:56,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:51:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988034899] [2023-12-15 17:51:56,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:56,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:51:56,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:51:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:56,581 INFO L87 Difference]: Start difference. First operand 7840 states and 11712 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:56,704 INFO L93 Difference]: Finished difference Result 10236 states and 15119 transitions. [2023-12-15 17:51:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:51:56,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-15 17:51:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:56,710 INFO L225 Difference]: With dead ends: 10236 [2023-12-15 17:51:56,710 INFO L226 Difference]: Without dead ends: 3930 [2023-12-15 17:51:56,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:56,713 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:56,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2023-12-15 17:51:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3923. [2023-12-15 17:51:56,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3921 states have (on average 1.5809742412649834) internal successors, (6199), 3922 states have internal predecessors, (6199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6199 transitions. [2023-12-15 17:51:56,772 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6199 transitions. Word has length 63 [2023-12-15 17:51:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:56,772 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 6199 transitions. [2023-12-15 17:51:56,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6199 transitions. [2023-12-15 17:51:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 17:51:56,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:56,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:56,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 17:51:56,774 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:56,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:56,774 INFO L85 PathProgramCache]: Analyzing trace with hash -635196804, now seen corresponding path program 1 times [2023-12-15 17:51:56,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:56,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536544995] [2023-12-15 17:51:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:56,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:51:56,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:56,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536544995] [2023-12-15 17:51:56,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536544995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:56,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:56,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:51:56,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141376824] [2023-12-15 17:51:56,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:56,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:51:56,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:56,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:51:56,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:56,821 INFO L87 Difference]: Start difference. First operand 3923 states and 6199 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:56,855 INFO L93 Difference]: Finished difference Result 5115 states and 7873 transitions. [2023-12-15 17:51:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:51:56,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-15 17:51:56,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:56,859 INFO L225 Difference]: With dead ends: 5115 [2023-12-15 17:51:56,860 INFO L226 Difference]: Without dead ends: 2737 [2023-12-15 17:51:56,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:56,862 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:56,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-12-15 17:51:56,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2735. [2023-12-15 17:51:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2733 states have (on average 1.6483717526527626) internal successors, (4505), 2734 states have internal predecessors, (4505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4505 transitions. [2023-12-15 17:51:56,898 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4505 transitions. Word has length 64 [2023-12-15 17:51:56,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:56,898 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4505 transitions. [2023-12-15 17:51:56,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4505 transitions. [2023-12-15 17:51:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:51:56,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:56,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:56,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 17:51:56,899 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:56,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:56,900 INFO L85 PathProgramCache]: Analyzing trace with hash 713212106, now seen corresponding path program 1 times [2023-12-15 17:51:56,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:56,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487401876] [2023-12-15 17:51:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:56,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:51:56,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:56,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487401876] [2023-12-15 17:51:56,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487401876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:51:56,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:51:56,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:51:56,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320736224] [2023-12-15 17:51:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:51:56,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:51:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:51:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:56,951 INFO L87 Difference]: Start difference. First operand 2735 states and 4505 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:56,976 INFO L93 Difference]: Finished difference Result 3333 states and 5332 transitions. [2023-12-15 17:51:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:51:56,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-15 17:51:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:56,979 INFO L225 Difference]: With dead ends: 3333 [2023-12-15 17:51:56,979 INFO L226 Difference]: Without dead ends: 2143 [2023-12-15 17:51:56,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:51:56,980 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:56,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:51:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-12-15 17:51:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2023-12-15 17:51:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2139 states have (on average 1.7152875175315567) internal successors, (3669), 2140 states have internal predecessors, (3669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3669 transitions. [2023-12-15 17:51:57,006 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3669 transitions. Word has length 66 [2023-12-15 17:51:57,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:57,006 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3669 transitions. [2023-12-15 17:51:57,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:57,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3669 transitions. [2023-12-15 17:51:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 17:51:57,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:57,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 17:51:57,007 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:57,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1469948056, now seen corresponding path program 1 times [2023-12-15 17:51:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:57,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439272512] [2023-12-15 17:51:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:51:58,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:58,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439272512] [2023-12-15 17:51:58,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439272512] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:51:58,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986198037] [2023-12-15 17:51:58,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:58,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:51:58,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:51:58,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:51:58,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:51:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:58,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 17:51:58,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:51:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:51:58,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:51:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:51:58,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986198037] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:51:58,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:51:58,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-15 17:51:58,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550999852] [2023-12-15 17:51:58,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:51:58,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 17:51:58,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:51:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 17:51:58,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-15 17:51:58,590 INFO L87 Difference]: Start difference. First operand 2141 states and 3669 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:00,293 INFO L93 Difference]: Finished difference Result 6296 states and 9162 transitions. [2023-12-15 17:52:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-15 17:52:00,308 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-15 17:52:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:00,316 INFO L225 Difference]: With dead ends: 6296 [2023-12-15 17:52:00,316 INFO L226 Difference]: Without dead ends: 5700 [2023-12-15 17:52:00,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-15 17:52:00,319 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 16121 mSDsluCounter, 6241 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16121 SdHoareTripleChecker+Valid, 7743 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:00,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16121 Valid, 7743 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:52:00,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2023-12-15 17:52:00,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5372. [2023-12-15 17:52:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5370 states have (on average 1.45195530726257) internal successors, (7797), 5371 states have internal predecessors, (7797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:00,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7797 transitions. [2023-12-15 17:52:00,491 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7797 transitions. Word has length 68 [2023-12-15 17:52:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:00,491 INFO L495 AbstractCegarLoop]: Abstraction has 5372 states and 7797 transitions. [2023-12-15 17:52:00,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7797 transitions. [2023-12-15 17:52:00,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-15 17:52:00,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:00,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:52:00,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 17:52:00,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:52:00,697 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:00,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:00,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1950155796, now seen corresponding path program 1 times [2023-12-15 17:52:00,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:00,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277794520] [2023-12-15 17:52:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:00,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:01,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:01,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277794520] [2023-12-15 17:52:01,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277794520] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:52:01,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479622713] [2023-12-15 17:52:01,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:01,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:52:01,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:52:01,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:52:01,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:52:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:01,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:52:01,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:52:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:02,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:52:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:03,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479622713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:52:03,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:52:03,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-12-15 17:52:03,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804441663] [2023-12-15 17:52:03,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:52:03,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-15 17:52:03,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:03,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-15 17:52:03,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-12-15 17:52:03,062 INFO L87 Difference]: Start difference. First operand 5372 states and 7797 transitions. Second operand has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:05,823 INFO L93 Difference]: Finished difference Result 19899 states and 26541 transitions. [2023-12-15 17:52:05,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-15 17:52:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-15 17:52:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:05,845 INFO L225 Difference]: With dead ends: 19899 [2023-12-15 17:52:05,845 INFO L226 Difference]: Without dead ends: 16209 [2023-12-15 17:52:05,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1203, Invalid=5277, Unknown=0, NotChecked=0, Total=6480 [2023-12-15 17:52:05,852 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 20146 mSDsluCounter, 9493 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20146 SdHoareTripleChecker+Valid, 10991 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:05,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20146 Valid, 10991 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 17:52:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16209 states. [2023-12-15 17:52:06,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16209 to 14521. [2023-12-15 17:52:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14521 states, 14519 states have (on average 1.3434809559887044) internal successors, (19506), 14520 states have internal predecessors, (19506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14521 states to 14521 states and 19506 transitions. [2023-12-15 17:52:06,335 INFO L78 Accepts]: Start accepts. Automaton has 14521 states and 19506 transitions. Word has length 69 [2023-12-15 17:52:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:06,336 INFO L495 AbstractCegarLoop]: Abstraction has 14521 states and 19506 transitions. [2023-12-15 17:52:06,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand 14521 states and 19506 transitions. [2023-12-15 17:52:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-15 17:52:06,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:06,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:52:06,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 17:52:06,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-15 17:52:06,545 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:06,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:06,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1629608802, now seen corresponding path program 1 times [2023-12-15 17:52:06,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:06,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662214151] [2023-12-15 17:52:06,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:06,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:06,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:06,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662214151] [2023-12-15 17:52:06,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662214151] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:52:06,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034243082] [2023-12-15 17:52:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:06,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:52:06,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:52:06,818 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:52:06,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:52:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:06,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:52:06,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:52:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:07,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:52:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:08,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034243082] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:52:08,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:52:08,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-15 17:52:08,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395953211] [2023-12-15 17:52:08,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:52:08,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-15 17:52:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-15 17:52:08,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-15 17:52:08,182 INFO L87 Difference]: Start difference. First operand 14521 states and 19506 transitions. Second operand has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:10,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:10,358 INFO L93 Difference]: Finished difference Result 40651 states and 52529 transitions. [2023-12-15 17:52:10,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-15 17:52:10,359 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-15 17:52:10,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:10,392 INFO L225 Difference]: With dead ends: 40651 [2023-12-15 17:52:10,393 INFO L226 Difference]: Without dead ends: 28103 [2023-12-15 17:52:10,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1196, Invalid=4810, Unknown=0, NotChecked=0, Total=6006 [2023-12-15 17:52:10,406 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 28089 mSDsluCounter, 7869 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28089 SdHoareTripleChecker+Valid, 9371 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:10,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28089 Valid, 9371 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:52:10,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28103 states. [2023-12-15 17:52:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28103 to 21817. [2023-12-15 17:52:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21817 states, 21815 states have (on average 1.3034609213843686) internal successors, (28435), 21816 states have internal predecessors, (28435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21817 states to 21817 states and 28435 transitions. [2023-12-15 17:52:11,015 INFO L78 Accepts]: Start accepts. Automaton has 21817 states and 28435 transitions. Word has length 69 [2023-12-15 17:52:11,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:11,015 INFO L495 AbstractCegarLoop]: Abstraction has 21817 states and 28435 transitions. [2023-12-15 17:52:11,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:11,016 INFO L276 IsEmpty]: Start isEmpty. Operand 21817 states and 28435 transitions. [2023-12-15 17:52:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-15 17:52:11,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:11,017 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:52:11,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 17:52:11,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:52:11,222 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:11,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:11,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1632107030, now seen corresponding path program 1 times [2023-12-15 17:52:11,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:11,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632634420] [2023-12-15 17:52:11,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:11,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:11,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:11,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632634420] [2023-12-15 17:52:11,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632634420] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:52:11,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282057631] [2023-12-15 17:52:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:11,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:52:11,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:52:11,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:52:11,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 17:52:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:12,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:52:12,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:52:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:12,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:52:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:13,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282057631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:52:13,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:52:13,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 30 [2023-12-15 17:52:13,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983349350] [2023-12-15 17:52:13,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:52:13,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-15 17:52:13,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:13,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-15 17:52:13,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-12-15 17:52:13,331 INFO L87 Difference]: Start difference. First operand 21817 states and 28435 transitions. Second operand has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:16,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:16,447 INFO L93 Difference]: Finished difference Result 62024 states and 78047 transitions. [2023-12-15 17:52:16,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-15 17:52:16,447 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-15 17:52:16,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:16,503 INFO L225 Difference]: With dead ends: 62024 [2023-12-15 17:52:16,504 INFO L226 Difference]: Without dead ends: 43265 [2023-12-15 17:52:16,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1092, Invalid=5228, Unknown=0, NotChecked=0, Total=6320 [2023-12-15 17:52:16,525 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 14213 mSDsluCounter, 16625 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14213 SdHoareTripleChecker+Valid, 18121 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:16,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14213 Valid, 18121 Invalid, 1179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 17:52:16,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43265 states. [2023-12-15 17:52:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43265 to 35253. [2023-12-15 17:52:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35253 states, 35251 states have (on average 1.2666023658903294) internal successors, (44649), 35252 states have internal predecessors, (44649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35253 states to 35253 states and 44649 transitions. [2023-12-15 17:52:17,709 INFO L78 Accepts]: Start accepts. Automaton has 35253 states and 44649 transitions. Word has length 70 [2023-12-15 17:52:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:17,709 INFO L495 AbstractCegarLoop]: Abstraction has 35253 states and 44649 transitions. [2023-12-15 17:52:17,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 35253 states and 44649 transitions. [2023-12-15 17:52:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 17:52:17,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:17,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:52:17,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 17:52:17,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:52:17,916 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:17,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:17,917 INFO L85 PathProgramCache]: Analyzing trace with hash -509967338, now seen corresponding path program 1 times [2023-12-15 17:52:17,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:17,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205333324] [2023-12-15 17:52:17,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:17,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:18,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:18,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205333324] [2023-12-15 17:52:18,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205333324] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:52:18,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831792933] [2023-12-15 17:52:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:18,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:52:18,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:52:18,303 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:52:18,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 17:52:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:18,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-15 17:52:18,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:52:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:19,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:52:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:21,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831792933] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:52:21,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:52:21,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 19] total 44 [2023-12-15 17:52:21,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047159456] [2023-12-15 17:52:21,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:52:21,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-15 17:52:21,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:21,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-15 17:52:21,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2023-12-15 17:52:21,134 INFO L87 Difference]: Start difference. First operand 35253 states and 44649 transitions. Second operand has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:31,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:31,924 INFO L93 Difference]: Finished difference Result 91691 states and 115761 transitions. [2023-12-15 17:52:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-15 17:52:31,925 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-15 17:52:31,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:32,050 INFO L225 Difference]: With dead ends: 91691 [2023-12-15 17:52:32,051 INFO L226 Difference]: Without dead ends: 78325 [2023-12-15 17:52:32,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=4162, Invalid=18790, Unknown=0, NotChecked=0, Total=22952 [2023-12-15 17:52:32,066 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 25496 mSDsluCounter, 20485 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25496 SdHoareTripleChecker+Valid, 22051 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:32,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25496 Valid, 22051 Invalid, 2042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 17:52:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78325 states. [2023-12-15 17:52:33,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78325 to 31137. [2023-12-15 17:52:33,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31137 states, 31135 states have (on average 1.2673197366308013) internal successors, (39458), 31136 states have internal predecessors, (39458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:33,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31137 states to 31137 states and 39458 transitions. [2023-12-15 17:52:33,349 INFO L78 Accepts]: Start accepts. Automaton has 31137 states and 39458 transitions. Word has length 71 [2023-12-15 17:52:33,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:33,349 INFO L495 AbstractCegarLoop]: Abstraction has 31137 states and 39458 transitions. [2023-12-15 17:52:33,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 31137 states and 39458 transitions. [2023-12-15 17:52:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 17:52:33,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:33,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:52:33,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 17:52:33,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-15 17:52:33,559 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:33,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2043155698, now seen corresponding path program 1 times [2023-12-15 17:52:33,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:33,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378912673] [2023-12-15 17:52:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:33,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:33,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:33,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378912673] [2023-12-15 17:52:33,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378912673] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:52:33,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810160744] [2023-12-15 17:52:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:33,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:52:33,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:52:33,977 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:52:33,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 17:52:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:34,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 17:52:34,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:52:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:34,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:52:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:35,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810160744] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:52:35,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:52:35,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 33 [2023-12-15 17:52:35,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55002659] [2023-12-15 17:52:35,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:52:35,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-15 17:52:35,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:36,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-15 17:52:36,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2023-12-15 17:52:36,000 INFO L87 Difference]: Start difference. First operand 31137 states and 39458 transitions. Second operand has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:37,667 INFO L93 Difference]: Finished difference Result 43705 states and 54470 transitions. [2023-12-15 17:52:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 17:52:37,667 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-15 17:52:37,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:37,700 INFO L225 Difference]: With dead ends: 43705 [2023-12-15 17:52:37,700 INFO L226 Difference]: Without dead ends: 30337 [2023-12-15 17:52:37,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=467, Invalid=1885, Unknown=0, NotChecked=0, Total=2352 [2023-12-15 17:52:37,711 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 8007 mSDsluCounter, 15038 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8007 SdHoareTripleChecker+Valid, 16532 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:37,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8007 Valid, 16532 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 17:52:37,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30337 states. [2023-12-15 17:52:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30337 to 25828. [2023-12-15 17:52:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25828 states, 25826 states have (on average 1.2717803763649036) internal successors, (32845), 25827 states have internal predecessors, (32845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25828 states to 25828 states and 32845 transitions. [2023-12-15 17:52:38,671 INFO L78 Accepts]: Start accepts. Automaton has 25828 states and 32845 transitions. Word has length 71 [2023-12-15 17:52:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:38,672 INFO L495 AbstractCegarLoop]: Abstraction has 25828 states and 32845 transitions. [2023-12-15 17:52:38,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 25828 states and 32845 transitions. [2023-12-15 17:52:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 17:52:38,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:38,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:52:38,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 17:52:38,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:52:38,877 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:38,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:38,878 INFO L85 PathProgramCache]: Analyzing trace with hash 285039432, now seen corresponding path program 1 times [2023-12-15 17:52:38,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:38,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553493643] [2023-12-15 17:52:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:38,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:40,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:40,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553493643] [2023-12-15 17:52:40,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553493643] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:52:40,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600338601] [2023-12-15 17:52:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:40,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:52:40,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:52:40,777 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:52:40,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 17:52:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:40,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:52:40,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:52:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:41,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:52:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:52:42,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600338601] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:52:42,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:52:42,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 13] total 47 [2023-12-15 17:52:42,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421134543] [2023-12-15 17:52:42,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:52:42,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-15 17:52:42,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:42,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-15 17:52:42,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2023-12-15 17:52:42,580 INFO L87 Difference]: Start difference. First operand 25828 states and 32845 transitions. Second operand has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 17:52:43,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 17:52:43,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=384, Invalid=2922, Unknown=0, NotChecked=0, Total=3306 [2023-12-15 17:52:43,304 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 505 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:43,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 770 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:52:43,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:52:43,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 17:52:43,315 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 17:52:43,335 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:52:43,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:52:43,506 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (25828states) and FLOYD_HOARE automaton (currently 13 states, 47 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-44-4-3-2-2-1 term,while SimplifyDDA2 was simplifying 34 xjuncts wrt. a ATOM-1 context. [2023-12-15 17:52:43,507 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:52:43,509 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-15 17:52:43,511 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:52:43,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:52:43 BoogieIcfgContainer [2023-12-15 17:52:43,512 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:52:43,513 INFO L158 Benchmark]: Toolchain (without parser) took 59388.41ms. Allocated memory was 351.3MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 283.8MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-15 17:52:43,513 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 181.4MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:52:43,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1286.91ms. Allocated memory is still 351.3MB. Free memory was 283.8MB in the beginning and 177.2MB in the end (delta: 106.6MB). Peak memory consumption was 108.1MB. Max. memory is 8.0GB. [2023-12-15 17:52:43,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 348.35ms. Allocated memory is still 351.3MB. Free memory was 176.7MB in the beginning and 264.2MB in the end (delta: -87.6MB). Peak memory consumption was 106.9MB. Max. memory is 8.0GB. [2023-12-15 17:52:43,513 INFO L158 Benchmark]: Boogie Preprocessor took 427.75ms. Allocated memory was 351.3MB in the beginning and 550.5MB in the end (delta: 199.2MB). Free memory was 264.2MB in the beginning and 421.6MB in the end (delta: -157.3MB). Peak memory consumption was 74.9MB. Max. memory is 8.0GB. [2023-12-15 17:52:43,513 INFO L158 Benchmark]: RCFGBuilder took 3195.15ms. Allocated memory was 550.5MB in the beginning and 1.1GB in the end (delta: 550.5MB). Free memory was 421.6MB in the beginning and 903.2MB in the end (delta: -481.6MB). Peak memory consumption was 230.4MB. Max. memory is 8.0GB. [2023-12-15 17:52:43,514 INFO L158 Benchmark]: TraceAbstraction took 54111.21ms. Allocated memory was 1.1GB in the beginning and 3.2GB in the end (delta: 2.1GB). Free memory was 902.6MB in the beginning and 1.8GB in the end (delta: -914.8MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 17:52:43,514 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 181.4MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1286.91ms. Allocated memory is still 351.3MB. Free memory was 283.8MB in the beginning and 177.2MB in the end (delta: 106.6MB). Peak memory consumption was 108.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 348.35ms. Allocated memory is still 351.3MB. Free memory was 176.7MB in the beginning and 264.2MB in the end (delta: -87.6MB). Peak memory consumption was 106.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 427.75ms. Allocated memory was 351.3MB in the beginning and 550.5MB in the end (delta: 199.2MB). Free memory was 264.2MB in the beginning and 421.6MB in the end (delta: -157.3MB). Peak memory consumption was 74.9MB. Max. memory is 8.0GB. * RCFGBuilder took 3195.15ms. Allocated memory was 550.5MB in the beginning and 1.1GB in the end (delta: 550.5MB). Free memory was 421.6MB in the beginning and 903.2MB in the end (delta: -481.6MB). Peak memory consumption was 230.4MB. Max. memory is 8.0GB. * TraceAbstraction took 54111.21ms. Allocated memory was 1.1GB in the beginning and 3.2GB in the end (delta: 2.1GB). Free memory was 902.6MB in the beginning and 1.8GB in the end (delta: -914.8MB). Peak memory consumption was 1.2GB. 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: 359]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 359). Cancelled while NwaCegarLoop was constructing difference of abstraction (25828states) and FLOYD_HOARE automaton (currently 13 states, 47 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-44-4-3-2-2-1 term,while SimplifyDDA2 was simplifying 34 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 518]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 518). Cancelled while NwaCegarLoop was constructing difference of abstraction (25828states) and FLOYD_HOARE automaton (currently 13 states, 47 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-44-4-3-2-2-1 term,while SimplifyDDA2 was simplifying 34 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 820 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 54.0s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150310 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 150310 mSDsluCounter, 133685 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96653 mSDsCounter, 1459 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9619 IncrementalHoareTripleChecker+Invalid, 11078 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1459 mSolverCounterUnsat, 37032 mSDtfsCounter, 9619 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1488 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 602 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14442 ImplicationChecksByTransitivity, 18.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35253occurred in iteration=23, InterpolantAutomatonStates: 405, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.8s AutomataMinimizationTime, 25 MinimizatonAttempts, 77381 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 1915 NumberOfCodeBlocks, 1915 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2365 ConstructedInterpolants, 0 QuantifiedInterpolants, 30929 SizeOfPredicates, 43 NumberOfNonLiveVariables, 2478 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 40 InterpolantComputations, 19 PerfectInterpolantSequences, 258/374 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