/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:52:12,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:52:12,897 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:52:12,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:52:12,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:52:12,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:52:12,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:52:12,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:52:12,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:52:12,935 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:52:12,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:52:12,935 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:52:12,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:52:12,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:52:12,936 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:52:12,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:52:12,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:52:12,937 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:52:12,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:52:12,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:52:12,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:52:12,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:52:12,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:52:12,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:52:12,946 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:52:12,946 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:52:12,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:52:12,947 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:52:12,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:52:12,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:52:12,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:52:12,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:52:12,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:52:12,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:52:12,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:52:12,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:52:12,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:52:12,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:52:12,950 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:52:12,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:52:12,950 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:52:12,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:52:12,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:52:12,950 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:52:13,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:52:13,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:52:13,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:52:13,152 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:52:13,152 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:52:13,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i [2023-12-15 20:52:14,311 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:52:14,542 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:52:14,543 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i [2023-12-15 20:52:14,555 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd00613c7/fd84c94d294e47368438190da69466d5/FLAG5a462d57d [2023-12-15 20:52:14,567 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd00613c7/fd84c94d294e47368438190da69466d5 [2023-12-15 20:52:14,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:52:14,571 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:52:14,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:52:14,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:52:14,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:52:14,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:14,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17df47ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14, skipping insertion in model container [2023-12-15 20:52:14,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:14,625 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:52:14,761 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i[916,929] [2023-12-15 20:52:14,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:52:14,845 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:52:14,854 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-88.i[916,929] [2023-12-15 20:52:14,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:52:14,930 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:52:14,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14 WrapperNode [2023-12-15 20:52:14,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:52:14,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:52:14,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:52:14,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:52:14,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:14,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:14,996 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 277 [2023-12-15 20:52:14,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:52:14,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:52:14,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:52:14,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:52:15,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:15,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:15,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:15,044 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 20:52:15,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:15,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:15,066 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:15,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:15,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:15,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:15,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:52:15,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:52:15,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:52:15,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:52:15,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2023-12-15 20:52:15,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:52:15,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:15,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 20:52:15,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 20:52:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:52:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:52:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:52:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:52:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:52:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:52:15,295 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:52:15,297 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:52:15,785 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:52:15,812 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:52:15,812 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:52:15,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:52:15 BoogieIcfgContainer [2023-12-15 20:52:15,812 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:52:15,814 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:52:15,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:52:15,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:52:15,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:52:14" (1/3) ... [2023-12-15 20:52:15,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6922861e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:52:15, skipping insertion in model container [2023-12-15 20:52:15,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (2/3) ... [2023-12-15 20:52:15,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6922861e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:52:15, skipping insertion in model container [2023-12-15 20:52:15,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:52:15" (3/3) ... [2023-12-15 20:52:15,819 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-88.i [2023-12-15 20:52:15,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:52:15,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:52:15,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:52:15,894 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;@45440198, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:52:15,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:52:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 74 states have (on average 1.5) internal successors, (111), 75 states have internal predecessors, (111), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-15 20:52:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-15 20:52:15,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:15,923 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:15,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:15,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1677595531, now seen corresponding path program 1 times [2023-12-15 20:52:15,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:15,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770469551] [2023-12-15 20:52:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:15,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:16,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:16,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770469551] [2023-12-15 20:52:16,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:52:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607672150] [2023-12-15 20:52:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:16,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:16,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:16,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:16,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:52:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:16,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:52:16,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-12-15 20:52:16,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:16,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607672150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:16,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:16,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:52:16,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375945601] [2023-12-15 20:52:16,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:16,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:52:16,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:16,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:52:16,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:52:16,551 INFO L87 Difference]: Start difference. First operand has 105 states, 74 states have (on average 1.5) internal successors, (111), 75 states have internal predecessors, (111), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-15 20:52:16,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:16,592 INFO L93 Difference]: Finished difference Result 207 states and 360 transitions. [2023-12-15 20:52:16,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:52:16,595 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) Word has length 187 [2023-12-15 20:52:16,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:16,603 INFO L225 Difference]: With dead ends: 207 [2023-12-15 20:52:16,603 INFO L226 Difference]: Without dead ends: 103 [2023-12-15 20:52:16,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:52:16,616 INFO L413 NwaCegarLoop]: 159 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, 159 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 [2023-12-15 20:52:16,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:52:16,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-15 20:52:16,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-12-15 20:52:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 73 states have (on average 1.452054794520548) internal successors, (106), 73 states have internal predecessors, (106), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-15 20:52:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 162 transitions. [2023-12-15 20:52:16,664 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 162 transitions. Word has length 187 [2023-12-15 20:52:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:16,664 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 162 transitions. [2023-12-15 20:52:16,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-15 20:52:16,665 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 162 transitions. [2023-12-15 20:52:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-15 20:52:16,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:16,669 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:16,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 20:52:16,872 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,SelfDestructingSolverStorable0 [2023-12-15 20:52:16,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:16,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:16,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1869733101, now seen corresponding path program 1 times [2023-12-15 20:52:16,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:16,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570829845] [2023-12-15 20:52:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:16,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:16,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:16,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418104056] [2023-12-15 20:52:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:16,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:16,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:16,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:16,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:52:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:17,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:52:17,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:20,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:20,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:20,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570829845] [2023-12-15 20:52:20,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:20,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418104056] [2023-12-15 20:52:20,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418104056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:20,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:20,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:52:20,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321676116] [2023-12-15 20:52:20,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:20,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:52:20,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:20,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:52:20,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:52:20,094 INFO L87 Difference]: Start difference. First operand 103 states and 162 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:20,955 INFO L93 Difference]: Finished difference Result 465 states and 727 transitions. [2023-12-15 20:52:20,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:52:20,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 187 [2023-12-15 20:52:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:20,965 INFO L225 Difference]: With dead ends: 465 [2023-12-15 20:52:20,965 INFO L226 Difference]: Without dead ends: 363 [2023-12-15 20:52:20,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:52:20,970 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 467 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:20,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 737 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 20:52:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-12-15 20:52:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 207. [2023-12-15 20:52:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 148 states have (on average 1.4391891891891893) internal successors, (213), 148 states have internal predecessors, (213), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-15 20:52:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 325 transitions. [2023-12-15 20:52:21,027 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 325 transitions. Word has length 187 [2023-12-15 20:52:21,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:21,028 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 325 transitions. [2023-12-15 20:52:21,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 325 transitions. [2023-12-15 20:52:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-15 20:52:21,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:21,031 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:21,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:21,239 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,SelfDestructingSolverStorable1 [2023-12-15 20:52:21,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:21,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:21,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1414116945, now seen corresponding path program 1 times [2023-12-15 20:52:21,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:21,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547780805] [2023-12-15 20:52:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:21,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:21,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:21,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520079183] [2023-12-15 20:52:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:21,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:21,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:21,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:21,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:52:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:21,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:52:21,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:21,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:21,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:21,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547780805] [2023-12-15 20:52:21,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:21,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520079183] [2023-12-15 20:52:21,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520079183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:21,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:21,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:52:21,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800193193] [2023-12-15 20:52:21,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:21,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:52:21,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:21,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:52:21,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:52:21,883 INFO L87 Difference]: Start difference. First operand 207 states and 325 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:21,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:21,957 INFO L93 Difference]: Finished difference Result 520 states and 815 transitions. [2023-12-15 20:52:21,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:52:21,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 187 [2023-12-15 20:52:21,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:21,962 INFO L225 Difference]: With dead ends: 520 [2023-12-15 20:52:21,962 INFO L226 Difference]: Without dead ends: 314 [2023-12-15 20:52:21,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:52:21,964 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 72 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:21,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 451 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:52:21,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-15 20:52:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 311. [2023-12-15 20:52:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 223 states have (on average 1.4260089686098654) internal successors, (318), 223 states have internal predecessors, (318), 84 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 20:52:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 486 transitions. [2023-12-15 20:52:22,020 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 486 transitions. Word has length 187 [2023-12-15 20:52:22,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:22,021 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 486 transitions. [2023-12-15 20:52:22,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:22,021 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 486 transitions. [2023-12-15 20:52:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-15 20:52:22,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:22,023 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:22,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:22,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:22,231 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:22,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:22,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2111492250, now seen corresponding path program 1 times [2023-12-15 20:52:22,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:22,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095442426] [2023-12-15 20:52:22,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:22,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:22,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:22,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334237957] [2023-12-15 20:52:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:22,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:22,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:22,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:22,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:52:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:22,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:52:22,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:22,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:22,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:22,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095442426] [2023-12-15 20:52:22,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:22,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334237957] [2023-12-15 20:52:22,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334237957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:22,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:22,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:52:22,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456314702] [2023-12-15 20:52:22,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:22,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:52:22,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:22,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:52:22,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:52:22,856 INFO L87 Difference]: Start difference. First operand 311 states and 486 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:23,068 INFO L93 Difference]: Finished difference Result 802 states and 1251 transitions. [2023-12-15 20:52:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:52:23,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 188 [2023-12-15 20:52:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:23,073 INFO L225 Difference]: With dead ends: 802 [2023-12-15 20:52:23,073 INFO L226 Difference]: Without dead ends: 492 [2023-12-15 20:52:23,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:52:23,076 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 182 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:23,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 556 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:52:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-15 20:52:23,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 365. [2023-12-15 20:52:23,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 248 states have (on average 1.3911290322580645) internal successors, (345), 248 states have internal predecessors, (345), 112 states have call successors, (112), 4 states have call predecessors, (112), 4 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-15 20:52:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 569 transitions. [2023-12-15 20:52:23,139 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 569 transitions. Word has length 188 [2023-12-15 20:52:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:23,140 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 569 transitions. [2023-12-15 20:52:23,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 569 transitions. [2023-12-15 20:52:23,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-15 20:52:23,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:23,142 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:23,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:23,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:23,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:23,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:23,353 INFO L85 PathProgramCache]: Analyzing trace with hash 260247012, now seen corresponding path program 1 times [2023-12-15 20:52:23,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:23,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613465482] [2023-12-15 20:52:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:23,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:23,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:23,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661030480] [2023-12-15 20:52:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:23,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:23,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:23,391 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:23,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:52:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:23,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 20:52:23,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:23,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:23,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613465482] [2023-12-15 20:52:23,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661030480] [2023-12-15 20:52:23,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661030480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:23,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:23,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:52:23,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573573602] [2023-12-15 20:52:23,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:23,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:52:23,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:52:23,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:52:23,563 INFO L87 Difference]: Start difference. First operand 365 states and 569 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:23,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:23,817 INFO L93 Difference]: Finished difference Result 967 states and 1511 transitions. [2023-12-15 20:52:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:52:23,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 188 [2023-12-15 20:52:23,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:23,821 INFO L225 Difference]: With dead ends: 967 [2023-12-15 20:52:23,821 INFO L226 Difference]: Without dead ends: 657 [2023-12-15 20:52:23,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:52:23,822 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 170 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:23,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 411 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:52:23,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-12-15 20:52:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 655. [2023-12-15 20:52:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 451 states have (on average 1.3835920177383592) internal successors, (624), 451 states have internal predecessors, (624), 196 states have call successors, (196), 7 states have call predecessors, (196), 7 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-15 20:52:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1016 transitions. [2023-12-15 20:52:23,910 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1016 transitions. Word has length 188 [2023-12-15 20:52:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:23,911 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 1016 transitions. [2023-12-15 20:52:23,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1016 transitions. [2023-12-15 20:52:23,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-15 20:52:23,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:23,913 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:23,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:24,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:24,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:24,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:24,121 INFO L85 PathProgramCache]: Analyzing trace with hash -413380396, now seen corresponding path program 1 times [2023-12-15 20:52:24,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:24,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380790487] [2023-12-15 20:52:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:24,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:24,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:24,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684489364] [2023-12-15 20:52:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:24,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:24,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:24,149 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:24,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:52:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:24,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:52:24,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:24,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:24,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:24,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380790487] [2023-12-15 20:52:24,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684489364] [2023-12-15 20:52:24,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684489364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:24,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:24,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 20:52:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946582822] [2023-12-15 20:52:24,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:24,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 20:52:24,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:24,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 20:52:24,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:52:24,484 INFO L87 Difference]: Start difference. First operand 655 states and 1016 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:24,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:24,722 INFO L93 Difference]: Finished difference Result 1711 states and 2638 transitions. [2023-12-15 20:52:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 20:52:24,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 190 [2023-12-15 20:52:24,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:24,727 INFO L225 Difference]: With dead ends: 1711 [2023-12-15 20:52:24,727 INFO L226 Difference]: Without dead ends: 1111 [2023-12-15 20:52:24,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-12-15 20:52:24,730 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 301 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:24,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 633 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:52:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2023-12-15 20:52:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 762. [2023-12-15 20:52:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 558 states have (on average 1.4157706093189963) internal successors, (790), 558 states have internal predecessors, (790), 196 states have call successors, (196), 7 states have call predecessors, (196), 7 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-15 20:52:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1182 transitions. [2023-12-15 20:52:24,827 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1182 transitions. Word has length 190 [2023-12-15 20:52:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:24,827 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 1182 transitions. [2023-12-15 20:52:24,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1182 transitions. [2023-12-15 20:52:24,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-15 20:52:24,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:24,829 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:24,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:25,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:25,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:25,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:25,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1078145444, now seen corresponding path program 1 times [2023-12-15 20:52:25,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:25,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846173699] [2023-12-15 20:52:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:25,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:25,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:25,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574830165] [2023-12-15 20:52:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:25,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:25,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:25,068 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:25,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:52:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:25,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:52:25,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:25,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:25,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:25,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846173699] [2023-12-15 20:52:25,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:25,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574830165] [2023-12-15 20:52:25,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574830165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:25,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:25,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:52:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353203737] [2023-12-15 20:52:25,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:25,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:52:25,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:52:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:52:25,245 INFO L87 Difference]: Start difference. First operand 762 states and 1182 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:25,945 INFO L93 Difference]: Finished difference Result 2335 states and 3607 transitions. [2023-12-15 20:52:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:52:25,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 190 [2023-12-15 20:52:25,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:25,954 INFO L225 Difference]: With dead ends: 2335 [2023-12-15 20:52:25,954 INFO L226 Difference]: Without dead ends: 1600 [2023-12-15 20:52:25,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:52:25,957 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 384 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:25,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 534 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:52:25,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2023-12-15 20:52:26,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1210. [2023-12-15 20:52:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 919 states have (on average 1.4026115342763874) internal successors, (1289), 919 states have internal predecessors, (1289), 280 states have call successors, (280), 10 states have call predecessors, (280), 10 states have return successors, (280), 280 states have call predecessors, (280), 280 states have call successors, (280) [2023-12-15 20:52:26,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1849 transitions. [2023-12-15 20:52:26,116 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1849 transitions. Word has length 190 [2023-12-15 20:52:26,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:26,116 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1849 transitions. [2023-12-15 20:52:26,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:26,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1849 transitions. [2023-12-15 20:52:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-15 20:52:26,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:26,120 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:26,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 20:52:26,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:26,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:26,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash -819980006, now seen corresponding path program 1 times [2023-12-15 20:52:26,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:26,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940168202] [2023-12-15 20:52:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:26,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:26,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:26,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278103560] [2023-12-15 20:52:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:26,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:26,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:26,372 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) [2023-12-15 20:52:26,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 20:52:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:26,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:52:26,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:28,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:28,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:28,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940168202] [2023-12-15 20:52:28,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:28,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278103560] [2023-12-15 20:52:28,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278103560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:28,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:28,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:52:28,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903660739] [2023-12-15 20:52:28,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:28,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:52:28,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:28,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:52:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:52:28,234 INFO L87 Difference]: Start difference. First operand 1210 states and 1849 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:28,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:28,859 INFO L93 Difference]: Finished difference Result 2374 states and 3626 transitions. [2023-12-15 20:52:28,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:52:28,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 190 [2023-12-15 20:52:28,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:28,866 INFO L225 Difference]: With dead ends: 2374 [2023-12-15 20:52:28,866 INFO L226 Difference]: Without dead ends: 1219 [2023-12-15 20:52:28,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:52:28,869 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 295 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:28,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 768 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:52:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-12-15 20:52:29,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1210. [2023-12-15 20:52:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 919 states have (on average 1.3939064200217628) internal successors, (1281), 919 states have internal predecessors, (1281), 280 states have call successors, (280), 10 states have call predecessors, (280), 10 states have return successors, (280), 280 states have call predecessors, (280), 280 states have call successors, (280) [2023-12-15 20:52:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1841 transitions. [2023-12-15 20:52:29,013 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1841 transitions. Word has length 190 [2023-12-15 20:52:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:29,013 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1841 transitions. [2023-12-15 20:52:29,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1841 transitions. [2023-12-15 20:52:29,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-15 20:52:29,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:29,016 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:29,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:29,222 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,SelfDestructingSolverStorable7 [2023-12-15 20:52:29,223 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:29,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:29,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2099213798, now seen corresponding path program 1 times [2023-12-15 20:52:29,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:29,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47343719] [2023-12-15 20:52:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:29,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:29,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:29,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795872007] [2023-12-15 20:52:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:29,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:29,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:29,246 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) [2023-12-15 20:52:29,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 20:52:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:29,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:52:29,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:29,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:29,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:29,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47343719] [2023-12-15 20:52:29,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:29,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795872007] [2023-12-15 20:52:29,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795872007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:29,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:29,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 20:52:29,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229068331] [2023-12-15 20:52:29,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:29,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:52:29,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:29,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:52:29,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:52:29,574 INFO L87 Difference]: Start difference. First operand 1210 states and 1841 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:30,277 INFO L93 Difference]: Finished difference Result 2515 states and 3828 transitions. [2023-12-15 20:52:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 20:52:30,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 190 [2023-12-15 20:52:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:30,286 INFO L225 Difference]: With dead ends: 2515 [2023-12-15 20:52:30,287 INFO L226 Difference]: Without dead ends: 1360 [2023-12-15 20:52:30,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:52:30,292 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 574 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:30,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1002 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:52:30,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2023-12-15 20:52:30,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1079. [2023-12-15 20:52:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 846 states have (on average 1.405437352245863) internal successors, (1189), 846 states have internal predecessors, (1189), 224 states have call successors, (224), 8 states have call predecessors, (224), 8 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-12-15 20:52:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1637 transitions. [2023-12-15 20:52:30,391 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1637 transitions. Word has length 190 [2023-12-15 20:52:30,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:30,391 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1637 transitions. [2023-12-15 20:52:30,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:30,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1637 transitions. [2023-12-15 20:52:30,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-15 20:52:30,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:30,394 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:30,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:30,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:30,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:30,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:30,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1841048360, now seen corresponding path program 1 times [2023-12-15 20:52:30,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:30,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565399758] [2023-12-15 20:52:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:30,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:30,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781464960] [2023-12-15 20:52:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:30,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:30,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:30,625 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:30,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 20:52:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:30,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:52:30,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:30,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:30,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:30,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565399758] [2023-12-15 20:52:30,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:30,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781464960] [2023-12-15 20:52:30,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781464960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:30,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:30,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:52:30,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052957577] [2023-12-15 20:52:30,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:30,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:52:30,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:30,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:52:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:52:30,922 INFO L87 Difference]: Start difference. First operand 1079 states and 1637 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:31,442 INFO L93 Difference]: Finished difference Result 2112 states and 3202 transitions. [2023-12-15 20:52:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:52:31,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 190 [2023-12-15 20:52:31,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:31,447 INFO L225 Difference]: With dead ends: 2112 [2023-12-15 20:52:31,447 INFO L226 Difference]: Without dead ends: 1088 [2023-12-15 20:52:31,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:52:31,450 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 276 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:31,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 863 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:52:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2023-12-15 20:52:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1079. [2023-12-15 20:52:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 846 states have (on average 1.400709219858156) internal successors, (1185), 846 states have internal predecessors, (1185), 224 states have call successors, (224), 8 states have call predecessors, (224), 8 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-12-15 20:52:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1633 transitions. [2023-12-15 20:52:31,548 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1633 transitions. Word has length 190 [2023-12-15 20:52:31,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:31,549 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1633 transitions. [2023-12-15 20:52:31,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1633 transitions. [2023-12-15 20:52:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-15 20:52:31,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:31,551 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:31,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:31,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 20:52:31,758 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:31,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:31,759 INFO L85 PathProgramCache]: Analyzing trace with hash 169006509, now seen corresponding path program 1 times [2023-12-15 20:52:31,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:31,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711404024] [2023-12-15 20:52:31,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:31,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:31,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:31,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042259619] [2023-12-15 20:52:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:31,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:31,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:31,806 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:31,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 20:52:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:31,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:52:31,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:31,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:31,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711404024] [2023-12-15 20:52:31,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042259619] [2023-12-15 20:52:31,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042259619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:31,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:31,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:52:31,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699253212] [2023-12-15 20:52:31,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:31,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:52:31,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:31,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:52:31,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:52:31,987 INFO L87 Difference]: Start difference. First operand 1079 states and 1633 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:32,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:32,074 INFO L93 Difference]: Finished difference Result 1798 states and 2733 transitions. [2023-12-15 20:52:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:52:32,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 190 [2023-12-15 20:52:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:32,079 INFO L225 Difference]: With dead ends: 1798 [2023-12-15 20:52:32,079 INFO L226 Difference]: Without dead ends: 1079 [2023-12-15 20:52:32,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:52:32,081 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 22 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:32,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 289 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:52:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2023-12-15 20:52:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1079. [2023-12-15 20:52:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 846 states have (on average 1.3947990543735225) internal successors, (1180), 846 states have internal predecessors, (1180), 224 states have call successors, (224), 8 states have call predecessors, (224), 8 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-12-15 20:52:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1628 transitions. [2023-12-15 20:52:32,176 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1628 transitions. Word has length 190 [2023-12-15 20:52:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:32,176 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1628 transitions. [2023-12-15 20:52:32,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1628 transitions. [2023-12-15 20:52:32,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-15 20:52:32,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:32,178 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:32,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:32,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 20:52:32,385 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:32,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:32,386 INFO L85 PathProgramCache]: Analyzing trace with hash -194525678, now seen corresponding path program 1 times [2023-12-15 20:52:32,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:32,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445135179] [2023-12-15 20:52:32,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:32,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:32,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:32,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886876018] [2023-12-15 20:52:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:32,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:32,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:32,412 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:32,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 20:52:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:32,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 20:52:32,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:33,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:33,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:33,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445135179] [2023-12-15 20:52:33,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:33,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886876018] [2023-12-15 20:52:33,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886876018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:33,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:33,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:52:33,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533994501] [2023-12-15 20:52:33,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:33,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:52:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:33,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:52:33,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:52:33,637 INFO L87 Difference]: Start difference. First operand 1079 states and 1628 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:34,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:34,123 INFO L93 Difference]: Finished difference Result 2730 states and 4078 transitions. [2023-12-15 20:52:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 20:52:34,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 190 [2023-12-15 20:52:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:34,130 INFO L225 Difference]: With dead ends: 2730 [2023-12-15 20:52:34,131 INFO L226 Difference]: Without dead ends: 1706 [2023-12-15 20:52:34,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:52:34,134 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 216 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:34,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 573 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:52:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2023-12-15 20:52:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1094. [2023-12-15 20:52:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 861 states have (on average 1.3948896631823462) internal successors, (1201), 861 states have internal predecessors, (1201), 224 states have call successors, (224), 8 states have call predecessors, (224), 8 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-12-15 20:52:34,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1649 transitions. [2023-12-15 20:52:34,276 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1649 transitions. Word has length 190 [2023-12-15 20:52:34,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:34,276 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1649 transitions. [2023-12-15 20:52:34,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1649 transitions. [2023-12-15 20:52:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 20:52:34,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:34,279 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:34,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:34,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 20:52:34,487 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:34,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash 635629853, now seen corresponding path program 1 times [2023-12-15 20:52:34,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:34,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704651162] [2023-12-15 20:52:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:34,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:34,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:34,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981955625] [2023-12-15 20:52:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:34,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:34,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:34,515 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:34,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 20:52:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:34,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 20:52:34,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 283 proven. 3 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2023-12-15 20:52:34,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:52:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 6 refuted. 0 times theorem prover too weak. 1353 trivial. 0 not checked. [2023-12-15 20:52:35,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:35,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704651162] [2023-12-15 20:52:35,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:35,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981955625] [2023-12-15 20:52:35,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981955625] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:52:35,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:52:35,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-15 20:52:35,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568435268] [2023-12-15 20:52:35,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:52:35,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 20:52:35,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:35,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 20:52:35,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-12-15 20:52:35,239 INFO L87 Difference]: Start difference. First operand 1094 states and 1649 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 4 states have call successors, (56), 3 states have call predecessors, (56), 7 states have return successors, (56), 6 states have call predecessors, (56), 4 states have call successors, (56) [2023-12-15 20:52:35,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:35,731 INFO L93 Difference]: Finished difference Result 1486 states and 2186 transitions. [2023-12-15 20:52:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 20:52:35,732 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 4 states have call successors, (56), 3 states have call predecessors, (56), 7 states have return successors, (56), 6 states have call predecessors, (56), 4 states have call successors, (56) Word has length 191 [2023-12-15 20:52:35,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:35,736 INFO L225 Difference]: With dead ends: 1486 [2023-12-15 20:52:35,736 INFO L226 Difference]: Without dead ends: 767 [2023-12-15 20:52:35,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 365 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=293, Invalid=637, Unknown=0, NotChecked=0, Total=930 [2023-12-15 20:52:35,738 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 382 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:35,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 280 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:52:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-12-15 20:52:35,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 406. [2023-12-15 20:52:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 312 states have (on average 1.330128205128205) internal successors, (415), 312 states have internal predecessors, (415), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 20:52:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 583 transitions. [2023-12-15 20:52:35,827 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 583 transitions. Word has length 191 [2023-12-15 20:52:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:35,827 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 583 transitions. [2023-12-15 20:52:35,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 4 states have call successors, (56), 3 states have call predecessors, (56), 7 states have return successors, (56), 6 states have call predecessors, (56), 4 states have call successors, (56) [2023-12-15 20:52:35,827 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 583 transitions. [2023-12-15 20:52:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 20:52:35,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:35,829 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:35,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:36,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 20:52:36,035 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:36,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash 534419652, now seen corresponding path program 1 times [2023-12-15 20:52:36,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:36,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206982727] [2023-12-15 20:52:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:36,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:36,060 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:36,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646856443] [2023-12-15 20:52:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:36,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:36,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:36,062 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:36,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 20:52:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:36,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 20:52:36,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:36,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:36,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:36,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206982727] [2023-12-15 20:52:36,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:36,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646856443] [2023-12-15 20:52:36,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646856443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:36,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:36,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:52:36,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975125434] [2023-12-15 20:52:36,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:36,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:52:36,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:36,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:52:36,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:52:36,829 INFO L87 Difference]: Start difference. First operand 406 states and 583 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:37,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:37,244 INFO L93 Difference]: Finished difference Result 842 states and 1206 transitions. [2023-12-15 20:52:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 20:52:37,245 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2023-12-15 20:52:37,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:37,247 INFO L225 Difference]: With dead ends: 842 [2023-12-15 20:52:37,247 INFO L226 Difference]: Without dead ends: 514 [2023-12-15 20:52:37,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2023-12-15 20:52:37,248 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 245 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:37,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 469 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:52:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-15 20:52:37,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 352. [2023-12-15 20:52:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 258 states have (on average 1.2945736434108528) internal successors, (334), 258 states have internal predecessors, (334), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 20:52:37,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 502 transitions. [2023-12-15 20:52:37,298 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 502 transitions. Word has length 191 [2023-12-15 20:52:37,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:37,299 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 502 transitions. [2023-12-15 20:52:37,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 502 transitions. [2023-12-15 20:52:37,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 20:52:37,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:37,300 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:37,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:37,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:37,506 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:37,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:37,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1669201630, now seen corresponding path program 1 times [2023-12-15 20:52:37,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:37,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234040456] [2023-12-15 20:52:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:37,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:37,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:37,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439062057] [2023-12-15 20:52:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:37,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:37,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:37,532 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:37,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 20:52:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:37,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 20:52:37,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:38,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:38,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:38,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234040456] [2023-12-15 20:52:38,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:38,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439062057] [2023-12-15 20:52:38,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439062057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:38,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:38,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:52:38,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273945973] [2023-12-15 20:52:38,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:38,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:52:38,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:38,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:52:38,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:52:38,294 INFO L87 Difference]: Start difference. First operand 352 states and 502 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:38,544 INFO L93 Difference]: Finished difference Result 786 states and 1117 transitions. [2023-12-15 20:52:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:52:38,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2023-12-15 20:52:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:38,546 INFO L225 Difference]: With dead ends: 786 [2023-12-15 20:52:38,546 INFO L226 Difference]: Without dead ends: 497 [2023-12-15 20:52:38,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:52:38,547 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 107 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:38,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 472 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:52:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-15 20:52:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 363. [2023-12-15 20:52:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 269 states have (on average 1.2973977695167287) internal successors, (349), 269 states have internal predecessors, (349), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 20:52:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 517 transitions. [2023-12-15 20:52:38,613 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 517 transitions. Word has length 192 [2023-12-15 20:52:38,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:38,614 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 517 transitions. [2023-12-15 20:52:38,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:38,614 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 517 transitions. [2023-12-15 20:52:38,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-15 20:52:38,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:38,615 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:38,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:38,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 20:52:38,821 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:38,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:38,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1366422254, now seen corresponding path program 1 times [2023-12-15 20:52:38,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:38,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336821842] [2023-12-15 20:52:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:38,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:38,840 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:38,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121224199] [2023-12-15 20:52:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:38,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:38,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:38,844 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:38,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 20:52:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:39,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 20:52:39,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:52:40,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:52:40,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:52:40,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336821842] [2023-12-15 20:52:40,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:52:40,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121224199] [2023-12-15 20:52:40,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121224199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:52:40,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:52:40,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 20:52:40,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921236733] [2023-12-15 20:52:40,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:52:40,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:52:40,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:52:40,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:52:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:52:40,251 INFO L87 Difference]: Start difference. First operand 363 states and 517 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:52:41,097 INFO L93 Difference]: Finished difference Result 1029 states and 1440 transitions. [2023-12-15 20:52:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 20:52:41,098 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 193 [2023-12-15 20:52:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:52:41,101 INFO L225 Difference]: With dead ends: 1029 [2023-12-15 20:52:41,101 INFO L226 Difference]: Without dead ends: 738 [2023-12-15 20:52:41,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-15 20:52:41,102 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 375 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:52:41,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 577 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:52:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-12-15 20:52:41,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 548. [2023-12-15 20:52:41,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 434 states have (on average 1.2857142857142858) internal successors, (558), 436 states have internal predecessors, (558), 102 states have call successors, (102), 11 states have call predecessors, (102), 11 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-15 20:52:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 762 transitions. [2023-12-15 20:52:41,187 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 762 transitions. Word has length 193 [2023-12-15 20:52:41,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:52:41,187 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 762 transitions. [2023-12-15 20:52:41,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-15 20:52:41,187 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 762 transitions. [2023-12-15 20:52:41,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-15 20:52:41,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:52:41,189 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:52:41,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 20:52:41,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 20:52:41,396 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:52:41,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:52:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1907476688, now seen corresponding path program 1 times [2023-12-15 20:52:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:52:41,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182821177] [2023-12-15 20:52:41,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:41,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:52:41,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:52:41,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315042241] [2023-12-15 20:52:41,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:52:41,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:52:41,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:52:41,426 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:52:41,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 20:52:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:52:43,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-15 20:52:43,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:52:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 955 proven. 180 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-12-15 20:52:44,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:53:09,460 WARN L293 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-15 20:53:16,607 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:53:16,609 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:53:17,294 WARN L235 SmtUtils]: Removed 4 from assertion stack [2023-12-15 20:53:17,295 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:53:17,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 20:53:17,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 20:53:17,496 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 194 with TraceHistMax 28,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 33 for 1700ms.. [2023-12-15 20:53:17,500 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:53:17,502 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:53:17,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:53:17 BoogieIcfgContainer [2023-12-15 20:53:17,504 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:53:17,504 INFO L158 Benchmark]: Toolchain (without parser) took 62933.40ms. Allocated memory was 274.7MB in the beginning and 599.8MB in the end (delta: 325.1MB). Free memory was 225.1MB in the beginning and 259.8MB in the end (delta: -34.7MB). Peak memory consumption was 291.6MB. Max. memory is 8.0GB. [2023-12-15 20:53:17,504 INFO L158 Benchmark]: CDTParser took 1.16ms. Allocated memory is still 184.5MB. Free memory was 138.0MB in the beginning and 137.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:53:17,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.91ms. Allocated memory is still 274.7MB. Free memory was 224.8MB in the beginning and 208.2MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 20:53:17,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.56ms. Allocated memory is still 274.7MB. Free memory was 208.2MB in the beginning and 203.1MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:53:17,505 INFO L158 Benchmark]: Boogie Preprocessor took 113.26ms. Allocated memory is still 274.7MB. Free memory was 203.1MB in the beginning and 197.5MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:53:17,505 INFO L158 Benchmark]: RCFGBuilder took 701.84ms. Allocated memory is still 274.7MB. Free memory was 197.1MB in the beginning and 225.9MB in the end (delta: -28.8MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-15 20:53:17,505 INFO L158 Benchmark]: TraceAbstraction took 61689.48ms. Allocated memory was 274.7MB in the beginning and 599.8MB in the end (delta: 325.1MB). Free memory was 225.4MB in the beginning and 259.8MB in the end (delta: -34.3MB). Peak memory consumption was 291.8MB. Max. memory is 8.0GB. [2023-12-15 20:53:17,506 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16ms. Allocated memory is still 184.5MB. Free memory was 138.0MB in the beginning and 137.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 357.91ms. Allocated memory is still 274.7MB. Free memory was 224.8MB in the beginning and 208.2MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 64.56ms. Allocated memory is still 274.7MB. Free memory was 208.2MB in the beginning and 203.1MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 113.26ms. Allocated memory is still 274.7MB. Free memory was 203.1MB in the beginning and 197.5MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 701.84ms. Allocated memory is still 274.7MB. Free memory was 197.1MB in the beginning and 225.9MB in the end (delta: -28.8MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 61689.48ms. Allocated memory was 274.7MB in the beginning and 599.8MB in the end (delta: 325.1MB). Free memory was 225.4MB in the beginning and 259.8MB in the end (delta: -34.3MB). Peak memory consumption was 291.8MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 194 with TraceHistMax 28,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 33 for 1700ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.6s, OverallIterations: 17, TraceHistogramMax: 28, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4068 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4068 mSDsluCounter, 8774 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5818 mSDsCounter, 698 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4106 IncrementalHoareTripleChecker+Invalid, 4804 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 698 mSolverCounterUnsat, 2956 mSDtfsCounter, 4106 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3265 GetRequests, 3135 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1210occurred in iteration=7, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 2785 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 3221 NumberOfCodeBlocks, 3221 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3208 ConstructedInterpolants, 0 QuantifiedInterpolants, 16402 SizeOfPredicates, 85 NumberOfNonLiveVariables, 7356 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 25695/25704 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