/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 08:18:58,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 08:18:58,368 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 08:18:58,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 08:18:58,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 08:18:58,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 08:18:58,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 08:18:58,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 08:18:58,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 08:18:58,395 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 08:18:58,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 08:18:58,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 08:18:58,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 08:18:58,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 08:18:58,396 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 08:18:58,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 08:18:58,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 08:18:58,397 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 08:18:58,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 08:18:58,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 08:18:58,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 08:18:58,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 08:18:58,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 08:18:58,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 08:18:58,398 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 08:18:58,399 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 08:18:58,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 08:18:58,399 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 08:18:58,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 08:18:58,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 08:18:58,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 08:18:58,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 08:18:58,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 08:18:58,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 08:18:58,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 08:18:58,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 08:18:58,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 08:18:58,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 08:18:58,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 08:18:58,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 08:18:58,401 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 08:18:58,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 08:18:58,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 08:18:58,402 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 08:18:58,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 08:18:58,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 08:18:58,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 08:18:58,624 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 08:18:58,624 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 08:18:58,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c [2023-12-20 08:18:59,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 08:19:00,104 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 08:19:00,105 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c [2023-12-20 08:19:00,114 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f66ac5b0/22b28ca28a7049749eba81be5a0642b6/FLAG90d5ed4ef [2023-12-20 08:19:00,127 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f66ac5b0/22b28ca28a7049749eba81be5a0642b6 [2023-12-20 08:19:00,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 08:19:00,132 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 08:19:00,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 08:19:00,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 08:19:00,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 08:19:00,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a442e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00, skipping insertion in model container [2023-12-20 08:19:00,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,159 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 08:19:00,301 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c[334,347] [2023-12-20 08:19:00,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 08:19:00,329 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 08:19:00,339 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c[334,347] [2023-12-20 08:19:00,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 08:19:00,358 INFO L206 MainTranslator]: Completed translation [2023-12-20 08:19:00,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00 WrapperNode [2023-12-20 08:19:00,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 08:19:00,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 08:19:00,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 08:19:00,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 08:19:00,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,393 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2023-12-20 08:19:00,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 08:19:00,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 08:19:00,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 08:19:00,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 08:19:00,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,417 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,426 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-20 08:19:00,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 08:19:00,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 08:19:00,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 08:19:00,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 08:19:00,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (1/1) ... [2023-12-20 08:19:00,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 08:19:00,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:19:00,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 08:19:00,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 08:19:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 08:19:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 08:19:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 08:19:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 08:19:00,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 08:19:00,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 08:19:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 08:19:00,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 08:19:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 08:19:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 08:19:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 08:19:00,616 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 08:19:00,619 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 08:19:00,789 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 08:19:00,811 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 08:19:00,811 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 08:19:00,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:19:00 BoogieIcfgContainer [2023-12-20 08:19:00,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 08:19:00,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 08:19:00,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 08:19:00,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 08:19:00,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:19:00" (1/3) ... [2023-12-20 08:19:00,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa1c5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:19:00, skipping insertion in model container [2023-12-20 08:19:00,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:19:00" (2/3) ... [2023-12-20 08:19:00,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa1c5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:19:00, skipping insertion in model container [2023-12-20 08:19:00,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:19:00" (3/3) ... [2023-12-20 08:19:00,819 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2023-12-20 08:19:00,844 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 08:19:00,844 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 08:19:00,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 08:19:00,885 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;@4344ee21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 08:19:00,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 08:19:00,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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) [2023-12-20 08:19:00,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 08:19:00,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:00,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:00,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:00,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash -245393117, now seen corresponding path program 1 times [2023-12-20 08:19:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:00,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643696046] [2023-12-20 08:19:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:00,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:19:01,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:01,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643696046] [2023-12-20 08:19:01,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643696046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:19:01,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:19:01,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 08:19:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246517382] [2023-12-20 08:19:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:19:01,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 08:19:01,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 08:19:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 08:19:01,145 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-12-20 08:19:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:01,184 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2023-12-20 08:19:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 08:19:01,188 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2023-12-20 08:19:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:01,193 INFO L225 Difference]: With dead ends: 34 [2023-12-20 08:19:01,194 INFO L226 Difference]: Without dead ends: 16 [2023-12-20 08:19:01,196 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 [2023-12-20 08:19:01,199 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:01,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:19:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-20 08:19:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-20 08:19:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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) [2023-12-20 08:19:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-20 08:19:01,230 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2023-12-20 08:19:01,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:01,230 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-20 08:19:01,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-12-20 08:19:01,230 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-20 08:19:01,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 08:19:01,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:01,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:01,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 08:19:01,232 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:01,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:01,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1639468179, now seen corresponding path program 1 times [2023-12-20 08:19:01,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:01,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249133268] [2023-12-20 08:19:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:01,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:01,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:19:01,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:01,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249133268] [2023-12-20 08:19:01,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249133268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:19:01,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:19:01,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 08:19:01,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314405628] [2023-12-20 08:19:01,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:19:01,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 08:19:01,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:01,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 08:19:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 08:19:01,360 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-12-20 08:19:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:01,401 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2023-12-20 08:19:01,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 08:19:01,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2023-12-20 08:19:01,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:01,402 INFO L225 Difference]: With dead ends: 41 [2023-12-20 08:19:01,402 INFO L226 Difference]: Without dead ends: 28 [2023-12-20 08:19:01,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 08:19:01,404 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:01,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 20 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:19:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-20 08:19:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2023-12-20 08:19:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2023-12-20 08:19:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-20 08:19:01,409 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2023-12-20 08:19:01,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:01,410 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-20 08:19:01,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-12-20 08:19:01,410 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-20 08:19:01,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-20 08:19:01,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:01,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:01,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 08:19:01,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:01,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash 563464204, now seen corresponding path program 1 times [2023-12-20 08:19:01,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:01,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302238682] [2023-12-20 08:19:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:01,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:19:01,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:01,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302238682] [2023-12-20 08:19:01,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302238682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:19:01,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:19:01,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 08:19:01,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424095885] [2023-12-20 08:19:01,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:19:01,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 08:19:01,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:01,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 08:19:01,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 08:19:01,601 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-12-20 08:19:01,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:01,649 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2023-12-20 08:19:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 08:19:01,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2023-12-20 08:19:01,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:01,650 INFO L225 Difference]: With dead ends: 41 [2023-12-20 08:19:01,650 INFO L226 Difference]: Without dead ends: 28 [2023-12-20 08:19:01,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 08:19:01,651 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:01,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 36 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:19:01,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-20 08:19:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2023-12-20 08:19:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2023-12-20 08:19:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-12-20 08:19:01,654 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2023-12-20 08:19:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:01,655 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-12-20 08:19:01,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-12-20 08:19:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-12-20 08:19:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-20 08:19:01,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:01,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:01,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 08:19:01,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:01,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:01,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1243522574, now seen corresponding path program 1 times [2023-12-20 08:19:01,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:01,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112756212] [2023-12-20 08:19:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:01,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 08:19:01,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:01,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112756212] [2023-12-20 08:19:01,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112756212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:19:01,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:19:01,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 08:19:01,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954689685] [2023-12-20 08:19:01,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:19:01,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 08:19:01,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:01,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 08:19:01,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 08:19:01,773 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-20 08:19:01,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:01,796 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2023-12-20 08:19:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 08:19:01,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-12-20 08:19:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:01,799 INFO L225 Difference]: With dead ends: 27 [2023-12-20 08:19:01,799 INFO L226 Difference]: Without dead ends: 25 [2023-12-20 08:19:01,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 08:19:01,800 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:01,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:19:01,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-20 08:19:01,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-20 08:19:01,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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) [2023-12-20 08:19:01,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-12-20 08:19:01,803 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 15 [2023-12-20 08:19:01,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:01,803 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-12-20 08:19:01,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-20 08:19:01,804 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-12-20 08:19:01,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-20 08:19:01,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:01,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:01,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 08:19:01,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:01,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:01,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1243462992, now seen corresponding path program 1 times [2023-12-20 08:19:01,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:01,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635233271] [2023-12-20 08:19:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 08:19:01,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:01,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635233271] [2023-12-20 08:19:01,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635233271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:19:01,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:19:01,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 08:19:01,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163679932] [2023-12-20 08:19:01,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:19:01,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 08:19:01,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 08:19:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 08:19:01,919 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-12-20 08:19:01,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:01,963 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2023-12-20 08:19:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 08:19:01,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2023-12-20 08:19:01,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:01,965 INFO L225 Difference]: With dead ends: 32 [2023-12-20 08:19:01,966 INFO L226 Difference]: Without dead ends: 30 [2023-12-20 08:19:01,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 08:19:01,972 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:01,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 36 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:19:01,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-20 08:19:01,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-20 08:19:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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) [2023-12-20 08:19:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-12-20 08:19:01,980 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 15 [2023-12-20 08:19:01,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:01,980 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-12-20 08:19:01,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-12-20 08:19:01,980 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-12-20 08:19:01,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-20 08:19:01,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:01,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:01,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 08:19:01,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:01,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:01,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1239542220, now seen corresponding path program 1 times [2023-12-20 08:19:01,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:01,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431616824] [2023-12-20 08:19:01,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:01,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:02,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:02,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431616824] [2023-12-20 08:19:02,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431616824] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:19:02,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423251859] [2023-12-20 08:19:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:02,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:02,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:19:02,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 08:19:02,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 08:19:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:02,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 08:19:02,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:19:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:02,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:19:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:02,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423251859] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:19:02,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:19:02,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-12-20 08:19:02,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790689406] [2023-12-20 08:19:02,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:19:02,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 08:19:02,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:02,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 08:19:02,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-12-20 08:19:02,283 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 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) [2023-12-20 08:19:02,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:02,384 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2023-12-20 08:19:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 08:19:02,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 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 20 [2023-12-20 08:19:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:02,386 INFO L225 Difference]: With dead ends: 108 [2023-12-20 08:19:02,386 INFO L226 Difference]: Without dead ends: 85 [2023-12-20 08:19:02,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-12-20 08:19:02,390 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 139 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:02,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 53 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:19:02,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-20 08:19:02,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 42. [2023-12-20 08:19:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 states have internal predecessors, (51), 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) [2023-12-20 08:19:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-12-20 08:19:02,400 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 20 [2023-12-20 08:19:02,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:02,400 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-12-20 08:19:02,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 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) [2023-12-20 08:19:02,400 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-12-20 08:19:02,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 08:19:02,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:02,401 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:02,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 08:19:02,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-20 08:19:02,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:02,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:02,609 INFO L85 PathProgramCache]: Analyzing trace with hash 972154321, now seen corresponding path program 1 times [2023-12-20 08:19:02,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:02,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332222927] [2023-12-20 08:19:02,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:02,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:02,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 08:19:02,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876561170] [2023-12-20 08:19:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:02,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:02,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:19:02,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 08:19:02,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 08:19:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:02,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 08:19:02,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:19:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 08:19:02,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 08:19:02,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:02,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332222927] [2023-12-20 08:19:02,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 08:19:02,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876561170] [2023-12-20 08:19:02,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876561170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:19:02,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:19:02,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 08:19:02,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084577735] [2023-12-20 08:19:02,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:19:02,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 08:19:02,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:02,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 08:19:02,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 08:19:02,785 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-12-20 08:19:02,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:02,806 INFO L93 Difference]: Finished difference Result 99 states and 123 transitions. [2023-12-20 08:19:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 08:19:02,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 35 [2023-12-20 08:19:02,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:02,809 INFO L225 Difference]: With dead ends: 99 [2023-12-20 08:19:02,809 INFO L226 Difference]: Without dead ends: 72 [2023-12-20 08:19:02,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 08:19:02,810 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:02,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:19:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-20 08:19:02,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2023-12-20 08:19:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 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) [2023-12-20 08:19:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2023-12-20 08:19:02,827 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 35 [2023-12-20 08:19:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:02,828 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2023-12-20 08:19:02,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-12-20 08:19:02,828 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2023-12-20 08:19:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 08:19:02,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:02,829 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:02,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 08:19:03,036 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,SelfDestructingSolverStorable6 [2023-12-20 08:19:03,036 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:03,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:03,037 INFO L85 PathProgramCache]: Analyzing trace with hash 373787793, now seen corresponding path program 1 times [2023-12-20 08:19:03,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:03,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259959467] [2023-12-20 08:19:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:03,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 08:19:03,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:03,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259959467] [2023-12-20 08:19:03,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259959467] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:19:03,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791225449] [2023-12-20 08:19:03,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:03,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:03,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:19:03,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 08:19:03,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 08:19:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:03,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 08:19:03,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:19:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:03,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:19:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:03,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791225449] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:19:03,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:19:03,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2023-12-20 08:19:03,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964593165] [2023-12-20 08:19:03,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:19:03,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 08:19:03,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:03,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 08:19:03,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-12-20 08:19:03,499 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 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) [2023-12-20 08:19:03,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:03,813 INFO L93 Difference]: Finished difference Result 313 states and 393 transitions. [2023-12-20 08:19:03,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 08:19:03,814 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 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 35 [2023-12-20 08:19:03,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:03,815 INFO L225 Difference]: With dead ends: 313 [2023-12-20 08:19:03,815 INFO L226 Difference]: Without dead ends: 274 [2023-12-20 08:19:03,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=411, Invalid=779, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 08:19:03,817 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 452 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:03,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 127 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:19:03,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-20 08:19:03,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 109. [2023-12-20 08:19:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.2407407407407407) internal successors, (134), 108 states have internal predecessors, (134), 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) [2023-12-20 08:19:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2023-12-20 08:19:03,828 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 35 [2023-12-20 08:19:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:03,828 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2023-12-20 08:19:03,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 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) [2023-12-20 08:19:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2023-12-20 08:19:03,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 08:19:03,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:03,830 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:03,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 08:19:04,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:04,037 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:04,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash -121658513, now seen corresponding path program 2 times [2023-12-20 08:19:04,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:04,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714679310] [2023-12-20 08:19:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:04,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-20 08:19:04,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:04,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714679310] [2023-12-20 08:19:04,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714679310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:19:04,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:19:04,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 08:19:04,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749313783] [2023-12-20 08:19:04,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:19:04,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 08:19:04,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:04,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 08:19:04,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-20 08:19:04,337 INFO L87 Difference]: Start difference. First operand 109 states and 134 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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) [2023-12-20 08:19:04,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:04,390 INFO L93 Difference]: Finished difference Result 226 states and 274 transitions. [2023-12-20 08:19:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 08:19:04,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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 65 [2023-12-20 08:19:04,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:04,391 INFO L225 Difference]: With dead ends: 226 [2023-12-20 08:19:04,391 INFO L226 Difference]: Without dead ends: 176 [2023-12-20 08:19:04,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-20 08:19:04,392 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:04,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:19:04,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-20 08:19:04,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 151. [2023-12-20 08:19:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.2066666666666668) internal successors, (181), 150 states have internal predecessors, (181), 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) [2023-12-20 08:19:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 181 transitions. [2023-12-20 08:19:04,400 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 181 transitions. Word has length 65 [2023-12-20 08:19:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:04,400 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 181 transitions. [2023-12-20 08:19:04,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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) [2023-12-20 08:19:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 181 transitions. [2023-12-20 08:19:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 08:19:04,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:04,401 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 6, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:04,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 08:19:04,402 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:04,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1265193113, now seen corresponding path program 3 times [2023-12-20 08:19:04,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:04,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047666220] [2023-12-20 08:19:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:04,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 160 proven. 8 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-20 08:19:04,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:04,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047666220] [2023-12-20 08:19:04,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047666220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:19:04,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472466848] [2023-12-20 08:19:04,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 08:19:04,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:04,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:19:04,624 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 08:19:04,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 08:19:04,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-20 08:19:04,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:19:04,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 08:19:04,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:19:04,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-20 08:19:04,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2023-12-20 08:19:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 82 proven. 5 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-20 08:19:04,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:19:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-20 08:19:04,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472466848] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:19:04,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:19:04,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-12-20 08:19:04,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272983920] [2023-12-20 08:19:04,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:19:04,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 08:19:04,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 08:19:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-12-20 08:19:04,939 INFO L87 Difference]: Start difference. First operand 151 states and 181 transitions. Second operand has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 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) [2023-12-20 08:19:05,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:05,214 INFO L93 Difference]: Finished difference Result 260 states and 307 transitions. [2023-12-20 08:19:05,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-20 08:19:05,215 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 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 65 [2023-12-20 08:19:05,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:05,215 INFO L225 Difference]: With dead ends: 260 [2023-12-20 08:19:05,215 INFO L226 Difference]: Without dead ends: 173 [2023-12-20 08:19:05,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=383, Invalid=949, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 08:19:05,216 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 155 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:05,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 111 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:19:05,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-20 08:19:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 104. [2023-12-20 08:19:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 103 states have internal predecessors, (119), 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) [2023-12-20 08:19:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2023-12-20 08:19:05,223 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 65 [2023-12-20 08:19:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:05,223 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2023-12-20 08:19:05,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 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) [2023-12-20 08:19:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2023-12-20 08:19:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 08:19:05,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:05,224 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:05,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 08:19:05,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:05,429 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:05,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash -790469261, now seen corresponding path program 2 times [2023-12-20 08:19:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362724613] [2023-12-20 08:19:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:05,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 08:19:05,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181480642] [2023-12-20 08:19:05,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 08:19:05,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:05,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:19:05,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 08:19:05,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 08:19:05,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 08:19:05,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:19:05,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 08:19:05,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:19:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:05,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:19:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:05,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:05,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362724613] [2023-12-20 08:19:05,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 08:19:05,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181480642] [2023-12-20 08:19:05,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181480642] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:19:05,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 08:19:05,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-20 08:19:05,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922672782] [2023-12-20 08:19:05,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 08:19:05,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 08:19:05,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:05,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 08:19:05,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-12-20 08:19:05,904 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 25 states have internal predecessors, (116), 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) [2023-12-20 08:19:06,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:06,282 INFO L93 Difference]: Finished difference Result 627 states and 756 transitions. [2023-12-20 08:19:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-20 08:19:06,282 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 25 states have internal predecessors, (116), 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 65 [2023-12-20 08:19:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:06,284 INFO L225 Difference]: With dead ends: 627 [2023-12-20 08:19:06,284 INFO L226 Difference]: Without dead ends: 555 [2023-12-20 08:19:06,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 08:19:06,285 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 759 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:06,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 176 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 08:19:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-12-20 08:19:06,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 206. [2023-12-20 08:19:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.1365853658536584) internal successors, (233), 205 states have internal predecessors, (233), 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) [2023-12-20 08:19:06,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 233 transitions. [2023-12-20 08:19:06,295 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 233 transitions. Word has length 65 [2023-12-20 08:19:06,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:06,295 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 233 transitions. [2023-12-20 08:19:06,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 25 states have internal predecessors, (116), 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) [2023-12-20 08:19:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 233 transitions. [2023-12-20 08:19:06,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-20 08:19:06,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:06,297 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:06,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 08:19:06,503 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,SelfDestructingSolverStorable10 [2023-12-20 08:19:06,503 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:06,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:06,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1170273997, now seen corresponding path program 3 times [2023-12-20 08:19:06,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:06,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45665488] [2023-12-20 08:19:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:06,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:06,520 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 08:19:06,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2650210] [2023-12-20 08:19:06,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 08:19:06,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:06,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:19:06,521 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) [2023-12-20 08:19:06,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 08:19:06,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-20 08:19:06,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:19:06,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 08:19:06,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:19:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 613 proven. 319 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-12-20 08:19:07,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:19:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 932 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-12-20 08:19:07,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:07,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45665488] [2023-12-20 08:19:07,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 08:19:07,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2650210] [2023-12-20 08:19:07,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2650210] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:19:07,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 08:19:07,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-12-20 08:19:07,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715606775] [2023-12-20 08:19:07,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 08:19:07,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 08:19:07,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 08:19:07,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=594, Unknown=0, NotChecked=0, Total=992 [2023-12-20 08:19:07,443 INFO L87 Difference]: Start difference. First operand 206 states and 233 transitions. Second operand has 32 states, 32 states have (on average 4.5) internal successors, (144), 31 states have internal predecessors, (144), 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) [2023-12-20 08:19:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:08,960 INFO L93 Difference]: Finished difference Result 1807 states and 2192 transitions. [2023-12-20 08:19:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-20 08:19:08,961 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 31 states have internal predecessors, (144), 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 125 [2023-12-20 08:19:08,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:08,973 INFO L225 Difference]: With dead ends: 1807 [2023-12-20 08:19:08,973 INFO L226 Difference]: Without dead ends: 1789 [2023-12-20 08:19:08,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3082, Invalid=5474, Unknown=0, NotChecked=0, Total=8556 [2023-12-20 08:19:08,976 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 912 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:08,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 231 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 08:19:08,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-12-20 08:19:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 428. [2023-12-20 08:19:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.1826697892271663) internal successors, (505), 427 states have internal predecessors, (505), 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) [2023-12-20 08:19:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 505 transitions. [2023-12-20 08:19:09,017 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 505 transitions. Word has length 125 [2023-12-20 08:19:09,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:09,018 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 505 transitions. [2023-12-20 08:19:09,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 31 states have internal predecessors, (144), 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) [2023-12-20 08:19:09,018 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 505 transitions. [2023-12-20 08:19:09,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 08:19:09,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:09,022 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:09,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 08:19:09,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:09,229 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:09,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:09,229 INFO L85 PathProgramCache]: Analyzing trace with hash 253100111, now seen corresponding path program 2 times [2023-12-20 08:19:09,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:09,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375409472] [2023-12-20 08:19:09,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:09,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:19:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:10,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:10,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375409472] [2023-12-20 08:19:10,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375409472] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:19:10,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220220144] [2023-12-20 08:19:10,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 08:19:10,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:10,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:19:10,156 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) [2023-12-20 08:19:10,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 08:19:10,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 08:19:10,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:19:10,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 08:19:10,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:19:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:10,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:19:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220220144] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:19:11,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:19:11,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 78 [2023-12-20 08:19:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674959903] [2023-12-20 08:19:11,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:19:11,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-20 08:19:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:11,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-20 08:19:11,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=3455, Unknown=0, NotChecked=0, Total=6162 [2023-12-20 08:19:11,695 INFO L87 Difference]: Start difference. First operand 428 states and 505 transitions. Second operand has 79 states, 79 states have (on average 4.784810126582278) internal successors, (378), 78 states have internal predecessors, (378), 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) [2023-12-20 08:19:13,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:13,805 INFO L93 Difference]: Finished difference Result 6076 states and 7267 transitions. [2023-12-20 08:19:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-20 08:19:13,806 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.784810126582278) internal successors, (378), 78 states have internal predecessors, (378), 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 135 [2023-12-20 08:19:13,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:13,819 INFO L225 Difference]: With dead ends: 6076 [2023-12-20 08:19:13,819 INFO L226 Difference]: Without dead ends: 5703 [2023-12-20 08:19:13,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3797 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4082, Invalid=6630, Unknown=0, NotChecked=0, Total=10712 [2023-12-20 08:19:13,822 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2164 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:13,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2164 Valid, 439 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 08:19:13,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2023-12-20 08:19:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 583. [2023-12-20 08:19:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 1.1838487972508591) internal successors, (689), 582 states have internal predecessors, (689), 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) [2023-12-20 08:19:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 689 transitions. [2023-12-20 08:19:13,884 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 689 transitions. Word has length 135 [2023-12-20 08:19:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:13,884 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 689 transitions. [2023-12-20 08:19:13,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.784810126582278) internal successors, (378), 78 states have internal predecessors, (378), 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) [2023-12-20 08:19:13,884 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 689 transitions. [2023-12-20 08:19:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-20 08:19:13,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:13,886 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 49, 49, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:13,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 08:19:14,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:14,107 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:14,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:14,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1849093645, now seen corresponding path program 4 times [2023-12-20 08:19:14,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:14,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655922144] [2023-12-20 08:19:14,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:14,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:14,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 08:19:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308087135] [2023-12-20 08:19:14,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 08:19:14,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:14,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:19:14,159 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 08:19:14,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 08:19:15,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 08:19:15,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:19:15,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-20 08:19:15,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:19:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6179 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:16,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:19:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6179 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 08:19:18,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:19:18,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655922144] [2023-12-20 08:19:18,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 08:19:18,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308087135] [2023-12-20 08:19:18,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308087135] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:19:18,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 08:19:18,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 105 [2023-12-20 08:19:18,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024327344] [2023-12-20 08:19:18,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 08:19:18,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-12-20 08:19:18,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:19:18,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-12-20 08:19:18,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5463, Invalid=5667, Unknown=0, NotChecked=0, Total=11130 [2023-12-20 08:19:18,941 INFO L87 Difference]: Start difference. First operand 583 states and 689 transitions. Second operand has 106 states, 106 states have (on average 4.867924528301887) internal successors, (516), 105 states have internal predecessors, (516), 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) [2023-12-20 08:19:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:19:26,021 INFO L93 Difference]: Finished difference Result 16395 states and 19705 transitions. [2023-12-20 08:19:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-12-20 08:19:26,021 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 4.867924528301887) internal successors, (516), 105 states have internal predecessors, (516), 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 265 [2023-12-20 08:19:26,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:19:26,054 INFO L225 Difference]: With dead ends: 16395 [2023-12-20 08:19:26,054 INFO L226 Difference]: Without dead ends: 15947 [2023-12-20 08:19:26,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5253 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=10869, Invalid=13623, Unknown=0, NotChecked=0, Total=24492 [2023-12-20 08:19:26,059 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4021 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4021 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 08:19:26,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4021 Valid, 783 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 08:19:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15947 states. [2023-12-20 08:19:26,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15947 to 1025. [2023-12-20 08:19:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1024 states have (on average 1.1552734375) internal successors, (1183), 1024 states have internal predecessors, (1183), 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) [2023-12-20 08:19:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1183 transitions. [2023-12-20 08:19:26,422 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1183 transitions. Word has length 265 [2023-12-20 08:19:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:19:26,422 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1183 transitions. [2023-12-20 08:19:26,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 4.867924528301887) internal successors, (516), 105 states have internal predecessors, (516), 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) [2023-12-20 08:19:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1183 transitions. [2023-12-20 08:19:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-20 08:19:26,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:19:26,428 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 101, 101, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:19:26,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 08:19:26,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-20 08:19:26,638 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:19:26,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:19:26,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2138071603, now seen corresponding path program 5 times [2023-12-20 08:19:26,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:19:26,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647502576] [2023-12-20 08:19:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:19:26,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:19:26,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 08:19:26,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900377404] [2023-12-20 08:19:26,687 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 08:19:26,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:19:26,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:19:26,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 08:19:26,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 08:33:42,698 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 08:33:42,698 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 [2023-12-20 08:33:43,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 08:33:43,898 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forcibly destroying the process [2023-12-20 08:33:43,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 137 [2023-12-20 08:33:43,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-20 08:33:43,950 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 08:33:43,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 08:33:43,950 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 526 with TraceHistMax 102,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-20 08:33:43,954 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 1, 1, 1, 1, 1] [2023-12-20 08:33:43,955 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 08:33:43,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 08:33:43 BoogieIcfgContainer [2023-12-20 08:33:43,957 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 08:33:43,957 INFO L158 Benchmark]: Toolchain (without parser) took 883824.95ms. Allocated memory was 169.9MB in the beginning and 696.3MB in the end (delta: 526.4MB). Free memory was 118.8MB in the beginning and 472.5MB in the end (delta: -353.7MB). Peak memory consumption was 173.5MB. Max. memory is 8.0GB. [2023-12-20 08:33:43,957 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 169.9MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 08:33:43,957 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.50ms. Allocated memory is still 169.9MB. Free memory was 118.8MB in the beginning and 107.8MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 08:33:43,957 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.54ms. Allocated memory is still 169.9MB. Free memory was 107.8MB in the beginning and 106.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 08:33:43,958 INFO L158 Benchmark]: Boogie Preprocessor took 57.79ms. Allocated memory is still 169.9MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 08:33:43,958 INFO L158 Benchmark]: RCFGBuilder took 359.32ms. Allocated memory is still 169.9MB. Free memory was 104.1MB in the beginning and 91.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 08:33:43,958 INFO L158 Benchmark]: TraceAbstraction took 883143.48ms. Allocated memory was 169.9MB in the beginning and 696.3MB in the end (delta: 526.4MB). Free memory was 91.3MB in the beginning and 472.5MB in the end (delta: -381.2MB). Peak memory consumption was 146.2MB. Max. memory is 8.0GB. [2023-12-20 08:33:43,959 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 169.9MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 224.50ms. Allocated memory is still 169.9MB. Free memory was 118.8MB in the beginning and 107.8MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.54ms. Allocated memory is still 169.9MB. Free memory was 107.8MB in the beginning and 106.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 57.79ms. Allocated memory is still 169.9MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 359.32ms. Allocated memory is still 169.9MB. Free memory was 104.1MB in the beginning and 91.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 883143.48ms. Allocated memory was 169.9MB in the beginning and 696.3MB in the end (delta: 526.4MB). Free memory was 91.3MB in the beginning and 472.5MB in the end (delta: -381.2MB). Peak memory consumption was 146.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 4]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 4). Cancelled while NwaCegarLoop was analyzing trace of length 526 with TraceHistMax 102,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 883.1s, OverallIterations: 15, TraceHistogramMax: 102, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8713 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8713 mSDsluCounter, 2133 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1955 mSDsCounter, 778 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1937 IncrementalHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 778 mSolverCounterUnsat, 178 mSDtfsCounter, 1937 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1712 GetRequests, 1227 SyntacticMatches, 0 SemanticMatches, 485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12902 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1025occurred in iteration=14, InterpolantAutomatonStates: 345, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 22090 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 1130 NumberOfCodeBlocks, 1060 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1815 ConstructedInterpolants, 0 QuantifiedInterpolants, 8901 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1960 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 25 InterpolantComputations, 7 PerfectInterpolantSequences, 2090/20548 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