/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/standard_copy4_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 05:51:56,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 05:51:56,312 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 05:51:56,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 05:51:56,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 05:51:56,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 05:51:56,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 05:51:56,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 05:51:56,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 05:51:56,344 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 05:51:56,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 05:51:56,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 05:51:56,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 05:51:56,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 05:51:56,346 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 05:51:56,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 05:51:56,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 05:51:56,346 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 05:51:56,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 05:51:56,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 05:51:56,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 05:51:56,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 05:51:56,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 05:51:56,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 05:51:56,347 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 05:51:56,347 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 05:51:56,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 05:51:56,348 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 05:51:56,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 05:51:56,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 05:51:56,349 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 05:51:56,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 05:51:56,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 05:51:56,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 05:51:56,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 05:51:56,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 05:51:56,350 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 05:51:56,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 05:51:56,350 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 05:51:56,350 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 05:51:56,350 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 05:51:56,351 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 05:51:56,351 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 05:51:56,351 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 05:51:56,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 05:51:56,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 05:51:56,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 05:51:56,570 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 05:51:56,570 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 05:51:56,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy4_ground-1.i [2023-12-20 05:51:57,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 05:51:57,682 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 05:51:57,683 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy4_ground-1.i [2023-12-20 05:51:57,687 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38f116149/9dac56acacaa45f0b16213ca89f15d7e/FLAG47af1459a [2023-12-20 05:51:57,696 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38f116149/9dac56acacaa45f0b16213ca89f15d7e [2023-12-20 05:51:57,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 05:51:57,699 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 05:51:57,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 05:51:57,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 05:51:57,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 05:51:57,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de10d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57, skipping insertion in model container [2023-12-20 05:51:57,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,716 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 05:51:57,802 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy4_ground-1.i[816,829] [2023-12-20 05:51:57,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 05:51:57,818 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 05:51:57,825 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy4_ground-1.i[816,829] [2023-12-20 05:51:57,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 05:51:57,839 INFO L206 MainTranslator]: Completed translation [2023-12-20 05:51:57,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57 WrapperNode [2023-12-20 05:51:57,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 05:51:57,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 05:51:57,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 05:51:57,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 05:51:57,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,860 INFO L138 Inliner]: procedures = 16, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 112 [2023-12-20 05:51:57,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 05:51:57,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 05:51:57,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 05:51:57,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 05:51:57,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,877 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,899 INFO L175 MemorySlicer]: Split 13 memory accesses to 6 slices as follows [2, 2, 3, 2, 2, 2]. 23 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 1, 1, 1]. [2023-12-20 05:51:57,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,913 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 05:51:57,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 05:51:57,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 05:51:57,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 05:51:57,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (1/1) ... [2023-12-20 05:51:57,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 05:51:57,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:57,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 05:51:57,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 05:51:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 05:51:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 05:51:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 05:51:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 05:51:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-20 05:51:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-20 05:51:57,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-20 05:51:57,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 05:51:57,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 05:51:57,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 05:51:57,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 05:51:57,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-20 05:51:57,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-20 05:51:57,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-20 05:51:57,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 05:51:57,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 05:51:57,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 05:51:57,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 05:51:57,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 05:51:57,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-20 05:51:57,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-20 05:51:57,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-20 05:51:57,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 05:51:58,046 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 05:51:58,050 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 05:51:58,156 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 05:51:58,184 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 05:51:58,184 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-20 05:51:58,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:51:58 BoogieIcfgContainer [2023-12-20 05:51:58,185 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 05:51:58,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 05:51:58,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 05:51:58,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 05:51:58,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:51:57" (1/3) ... [2023-12-20 05:51:58,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ede773c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:51:58, skipping insertion in model container [2023-12-20 05:51:58,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:57" (2/3) ... [2023-12-20 05:51:58,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ede773c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:51:58, skipping insertion in model container [2023-12-20 05:51:58,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:51:58" (3/3) ... [2023-12-20 05:51:58,190 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy4_ground-1.i [2023-12-20 05:51:58,201 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 05:51:58,201 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 05:51:58,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 05:51:58,231 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;@24fbc286, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 05:51:58,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 05:51:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:58,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-20 05:51:58,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:58,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:58,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:58,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:58,241 INFO L85 PathProgramCache]: Analyzing trace with hash 597340837, now seen corresponding path program 1 times [2023-12-20 05:51:58,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:58,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560914785] [2023-12-20 05:51:58,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:58,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 05:51:58,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560914785] [2023-12-20 05:51:58,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560914785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 05:51:58,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 05:51:58,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 05:51:58,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297502341] [2023-12-20 05:51:58,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 05:51:58,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 05:51:58,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 05:51:58,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 05:51:58,428 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:58,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:58,472 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2023-12-20 05:51:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 05:51:58,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-20 05:51:58,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:58,478 INFO L225 Difference]: With dead ends: 35 [2023-12-20 05:51:58,478 INFO L226 Difference]: Without dead ends: 17 [2023-12-20 05:51:58,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 05:51:58,484 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:58,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-20 05:51:58,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-20 05:51:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-12-20 05:51:58,507 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 14 [2023-12-20 05:51:58,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:58,508 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-12-20 05:51:58,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-12-20 05:51:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-20 05:51:58,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:58,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:58,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 05:51:58,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:58,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:58,511 INFO L85 PathProgramCache]: Analyzing trace with hash -502109116, now seen corresponding path program 1 times [2023-12-20 05:51:58,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:58,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223755298] [2023-12-20 05:51:58,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:58,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 05:51:58,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:58,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223755298] [2023-12-20 05:51:58,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223755298] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:58,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566371701] [2023-12-20 05:51:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:58,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:58,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:58,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:51:58,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 05:51:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:58,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 05:51:58,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:51:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 05:51:58,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 05:51:58,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566371701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 05:51:58,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 05:51:58,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-20 05:51:58,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607290957] [2023-12-20 05:51:58,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 05:51:58,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 05:51:58,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 05:51:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 05:51:58,786 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:58,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:58,817 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2023-12-20 05:51:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 05:51:58,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-20 05:51:58,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:58,819 INFO L225 Difference]: With dead ends: 33 [2023-12-20 05:51:58,819 INFO L226 Difference]: Without dead ends: 21 [2023-12-20 05:51:58,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 05:51:58,821 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:58,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:58,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-20 05:51:58,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-20 05:51:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-12-20 05:51:58,830 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 15 [2023-12-20 05:51:58,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:58,830 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-12-20 05:51:58,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:58,831 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-20 05:51:58,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 05:51:58,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:58,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:58,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 05:51:59,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:59,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:59,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash -489823800, now seen corresponding path program 1 times [2023-12-20 05:51:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:59,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000564473] [2023-12-20 05:51:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 05:51:59,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:59,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000564473] [2023-12-20 05:51:59,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000564473] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:59,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080744167] [2023-12-20 05:51:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:59,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:59,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:59,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:51:59,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 05:51:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:59,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 05:51:59,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:51:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 05:51:59,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:51:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 05:51:59,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080744167] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:51:59,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:51:59,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-20 05:51:59,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872838588] [2023-12-20 05:51:59,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:51:59,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 05:51:59,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:59,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 05:51:59,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 05:51:59,240 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:59,262 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2023-12-20 05:51:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 05:51:59,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-20 05:51:59,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:59,263 INFO L225 Difference]: With dead ends: 42 [2023-12-20 05:51:59,263 INFO L226 Difference]: Without dead ends: 24 [2023-12-20 05:51:59,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 05:51:59,264 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:59,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:59,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-20 05:51:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-20 05:51:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-12-20 05:51:59,267 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 19 [2023-12-20 05:51:59,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:59,267 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-12-20 05:51:59,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,267 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-12-20 05:51:59,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 05:51:59,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:59,268 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:59,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 05:51:59,473 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,SelfDestructingSolverStorable2 [2023-12-20 05:51:59,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:59,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:59,474 INFO L85 PathProgramCache]: Analyzing trace with hash -141746327, now seen corresponding path program 2 times [2023-12-20 05:51:59,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:59,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540955419] [2023-12-20 05:51:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:59,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 05:51:59,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:59,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540955419] [2023-12-20 05:51:59,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540955419] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:59,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261799043] [2023-12-20 05:51:59,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 05:51:59,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:59,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:59,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:51:59,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 05:51:59,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 05:51:59,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:51:59,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 05:51:59,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:51:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 05:51:59,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:51:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 05:51:59,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261799043] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:51:59,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:51:59,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-20 05:51:59,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302944088] [2023-12-20 05:51:59,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:51:59,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 05:51:59,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:59,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 05:51:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 05:51:59,666 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:59,725 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-12-20 05:51:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 05:51:59,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-20 05:51:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:59,727 INFO L225 Difference]: With dead ends: 51 [2023-12-20 05:51:59,727 INFO L226 Difference]: Without dead ends: 36 [2023-12-20 05:51:59,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 05:51:59,729 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:59,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:59,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-20 05:51:59,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-20 05:51:59,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-12-20 05:51:59,752 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 22 [2023-12-20 05:51:59,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:59,752 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-12-20 05:51:59,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-12-20 05:51:59,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 05:51:59,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:59,753 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:59,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 05:51:59,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:59,954 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:59,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:59,954 INFO L85 PathProgramCache]: Analyzing trace with hash -88441627, now seen corresponding path program 3 times [2023-12-20 05:51:59,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:59,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244966429] [2023-12-20 05:51:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:59,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:52:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 05:52:00,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:52:00,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244966429] [2023-12-20 05:52:00,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244966429] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:52:00,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069139754] [2023-12-20 05:52:00,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 05:52:00,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:00,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:52:00,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:52:00,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 05:52:00,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-20 05:52:00,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:52:00,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 05:52:00,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:52:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 05:52:00,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:52:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 05:52:00,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069139754] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:52:00,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:52:00,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-20 05:52:00,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668561563] [2023-12-20 05:52:00,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:52:00,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 05:52:00,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:52:00,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 05:52:00,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-20 05:52:00,302 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:52:00,324 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2023-12-20 05:52:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 05:52:00,325 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-20 05:52:00,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:52:00,325 INFO L225 Difference]: With dead ends: 72 [2023-12-20 05:52:00,325 INFO L226 Difference]: Without dead ends: 42 [2023-12-20 05:52:00,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-20 05:52:00,326 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:52:00,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:52:00,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-20 05:52:00,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-20 05:52:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.146341463414634) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2023-12-20 05:52:00,330 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 34 [2023-12-20 05:52:00,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:52:00,330 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2023-12-20 05:52:00,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2023-12-20 05:52:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 05:52:00,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:52:00,331 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:52:00,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 05:52:00,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:00,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:52:00,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:52:00,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2094555003, now seen corresponding path program 4 times [2023-12-20 05:52:00,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:52:00,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717919933] [2023-12-20 05:52:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:52:00,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:52:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:52:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 05:52:00,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:52:00,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717919933] [2023-12-20 05:52:00,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717919933] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:52:00,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661522357] [2023-12-20 05:52:00,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 05:52:00,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:00,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:52:00,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:52:00,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 05:52:00,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 05:52:00,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:52:00,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 05:52:00,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:52:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 05:52:00,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:52:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 05:52:01,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661522357] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:52:01,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:52:01,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-20 05:52:01,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806437141] [2023-12-20 05:52:01,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:52:01,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 05:52:01,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:52:01,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 05:52:01,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-20 05:52:01,036 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:52:01,076 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2023-12-20 05:52:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-20 05:52:01,077 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-20 05:52:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:52:01,077 INFO L225 Difference]: With dead ends: 84 [2023-12-20 05:52:01,077 INFO L226 Difference]: Without dead ends: 54 [2023-12-20 05:52:01,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-20 05:52:01,078 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:52:01,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:52:01,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-20 05:52:01,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-20 05:52:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2023-12-20 05:52:01,082 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 40 [2023-12-20 05:52:01,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:52:01,082 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2023-12-20 05:52:01,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2023-12-20 05:52:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 05:52:01,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:52:01,083 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:52:01,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 05:52:01,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:01,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:52:01,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:52:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 411582405, now seen corresponding path program 5 times [2023-12-20 05:52:01,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:52:01,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467611169] [2023-12-20 05:52:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:52:01,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:52:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:52:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 05:52:01,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:52:01,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467611169] [2023-12-20 05:52:01,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467611169] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:52:01,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747180373] [2023-12-20 05:52:01,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 05:52:01,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:01,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:52:01,723 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:52:01,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 05:55:19,359 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-20 05:55:19,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:55:19,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 05:55:19,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:55:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 05:55:19,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:55:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 05:55:20,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747180373] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:55:20,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:55:20,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-12-20 05:55:20,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912994527] [2023-12-20 05:55:20,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:55:20,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-20 05:55:20,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:55:20,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-20 05:55:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 05:55:20,002 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:20,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:55:20,086 INFO L93 Difference]: Finished difference Result 108 states and 141 transitions. [2023-12-20 05:55:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-20 05:55:20,086 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 05:55:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:55:20,088 INFO L225 Difference]: With dead ends: 108 [2023-12-20 05:55:20,088 INFO L226 Difference]: Without dead ends: 78 [2023-12-20 05:55:20,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 05:55:20,090 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:55:20,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:55:20,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-20 05:55:20,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-20 05:55:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.077922077922078) internal successors, (83), 77 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:20,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2023-12-20 05:55:20,109 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 52 [2023-12-20 05:55:20,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:55:20,110 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2023-12-20 05:55:20,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:20,111 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2023-12-20 05:55:20,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 05:55:20,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:55:20,111 INFO L195 NwaCegarLoop]: trace histogram [46, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:55:20,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 05:55:20,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:55:20,312 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:55:20,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:55:20,313 INFO L85 PathProgramCache]: Analyzing trace with hash 553311813, now seen corresponding path program 6 times [2023-12-20 05:55:20,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:55:20,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078093352] [2023-12-20 05:55:20,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:55:20,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:55:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:55:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 05:55:21,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:55:21,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078093352] [2023-12-20 05:55:21,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078093352] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:55:21,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403559125] [2023-12-20 05:55:21,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 05:55:21,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:55:21,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:55:21,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:55:21,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 05:55:22,077 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-20 05:55:22,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:55:22,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 05:55:22,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:55:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 46 proven. 10 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2023-12-20 05:55:22,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:55:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1111 trivial. 0 not checked. [2023-12-20 05:55:22,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403559125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:55:22,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:55:22,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 8, 7] total 60 [2023-12-20 05:55:22,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421017427] [2023-12-20 05:55:22,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:55:22,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 05:55:22,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:55:22,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 05:55:22,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1290, Invalid=2250, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 05:55:22,340 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 60 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:22,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:55:22,701 INFO L93 Difference]: Finished difference Result 133 states and 167 transitions. [2023-12-20 05:55:22,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-20 05:55:22,701 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 05:55:22,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:55:22,702 INFO L225 Difference]: With dead ends: 133 [2023-12-20 05:55:22,702 INFO L226 Difference]: Without dead ends: 103 [2023-12-20 05:55:22,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1420, Invalid=3410, Unknown=0, NotChecked=0, Total=4830 [2023-12-20 05:55:22,703 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 59 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:55:22,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 93 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:55:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-20 05:55:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-12-20 05:55:22,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0588235294117647) internal successors, (108), 102 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2023-12-20 05:55:22,709 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 76 [2023-12-20 05:55:22,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:55:22,710 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2023-12-20 05:55:22,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2023-12-20 05:55:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 05:55:22,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:55:22,713 INFO L195 NwaCegarLoop]: trace histogram [47, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:55:22,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 05:55:22,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:55:22,925 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:55:22,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:55:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash 169379428, now seen corresponding path program 7 times [2023-12-20 05:55:22,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:55:22,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426665411] [2023-12-20 05:55:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:55:22,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:55:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:55:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-20 05:55:24,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:55:24,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426665411] [2023-12-20 05:55:24,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426665411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:55:24,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383301162] [2023-12-20 05:55:24,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 05:55:24,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:55:24,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:55:24,343 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:55:24,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 05:55:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:55:24,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-20 05:55:24,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:55:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-20 05:55:24,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:55:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-20 05:55:26,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383301162] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:55:26,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:55:26,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 98 [2023-12-20 05:55:26,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978586604] [2023-12-20 05:55:26,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:55:26,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-20 05:55:26,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:55:26,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-20 05:55:26,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-20 05:55:26,845 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 99 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 98 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:26,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:55:26,948 INFO L93 Difference]: Finished difference Result 206 states and 264 transitions. [2023-12-20 05:55:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-20 05:55:26,948 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 98 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 05:55:26,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:55:26,949 INFO L225 Difference]: With dead ends: 206 [2023-12-20 05:55:26,949 INFO L226 Difference]: Without dead ends: 152 [2023-12-20 05:55:26,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-20 05:55:26,952 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:55:26,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:55:26,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-20 05:55:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-12-20 05:55:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0397350993377483) internal successors, (157), 151 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 157 transitions. [2023-12-20 05:55:26,957 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 157 transitions. Word has length 101 [2023-12-20 05:55:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:55:26,957 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 157 transitions. [2023-12-20 05:55:26,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 98 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 157 transitions. [2023-12-20 05:55:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-20 05:55:26,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:55:26,959 INFO L195 NwaCegarLoop]: trace histogram [96, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:55:26,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 05:55:27,175 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,SelfDestructingSolverStorable8 [2023-12-20 05:55:27,176 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:55:27,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:55:27,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1763991269, now seen corresponding path program 8 times [2023-12-20 05:55:27,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:55:27,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510149592] [2023-12-20 05:55:27,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:55:27,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:55:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:55:31,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4876 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-20 05:55:31,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:55:31,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510149592] [2023-12-20 05:55:31,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510149592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:55:31,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414052670] [2023-12-20 05:55:31,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 05:55:31,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:55:31,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:55:31,727 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:55:31,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 05:55:32,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 05:55:32,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:55:32,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-20 05:55:32,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:55:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4876 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-20 05:55:32,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:55:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4876 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-20 05:55:40,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414052670] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:55:40,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:55:40,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98, 98] total 196 [2023-12-20 05:55:40,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47520995] [2023-12-20 05:55:40,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:55:40,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2023-12-20 05:55:40,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:55:40,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2023-12-20 05:55:40,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2023-12-20 05:55:40,063 INFO L87 Difference]: Start difference. First operand 152 states and 157 transitions. Second operand has 197 states, 197 states have (on average 1.0862944162436547) internal successors, (214), 196 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:55:40,386 INFO L93 Difference]: Finished difference Result 304 states and 411 transitions. [2023-12-20 05:55:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-20 05:55:40,387 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 197 states have (on average 1.0862944162436547) internal successors, (214), 196 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2023-12-20 05:55:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:55:40,388 INFO L225 Difference]: With dead ends: 304 [2023-12-20 05:55:40,388 INFO L226 Difference]: Without dead ends: 250 [2023-12-20 05:55:40,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2023-12-20 05:55:40,390 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:55:40,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:55:40,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-20 05:55:40,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2023-12-20 05:55:40,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.0240963855421688) internal successors, (255), 249 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 255 transitions. [2023-12-20 05:55:40,398 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 255 transitions. Word has length 150 [2023-12-20 05:55:40,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:55:40,398 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 255 transitions. [2023-12-20 05:55:40,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 197 states have (on average 1.0862944162436547) internal successors, (214), 196 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:55:40,399 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 255 transitions. [2023-12-20 05:55:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-20 05:55:40,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:55:40,400 INFO L195 NwaCegarLoop]: trace histogram [194, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:55:40,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 05:55:40,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 05:55:40,608 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:55:40,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:55:40,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1756615483, now seen corresponding path program 9 times [2023-12-20 05:55:40,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:55:40,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222063811] [2023-12-20 05:55:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:55:40,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:55:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:55:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 19135 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-20 05:55:56,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:55:56,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222063811] [2023-12-20 05:55:56,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222063811] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:55:56,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777643176] [2023-12-20 05:55:56,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 05:55:56,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:55:56,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:55:56,802 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) [2023-12-20 05:55:56,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 05:55:58,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-20 05:55:58,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:55:58,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 05:55:58,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:55:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 19135 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 19080 trivial. 0 not checked. [2023-12-20 05:55:59,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:55:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 19135 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 19080 trivial. 0 not checked. [2023-12-20 05:55:59,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777643176] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:55:59,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:55:59,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 13, 13] total 219 [2023-12-20 05:55:59,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459092963] [2023-12-20 05:55:59,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:55:59,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 219 states [2023-12-20 05:55:59,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:55:59,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2023-12-20 05:55:59,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19581, Invalid=28161, Unknown=0, NotChecked=0, Total=47742 [2023-12-20 05:55:59,834 INFO L87 Difference]: Start difference. First operand 250 states and 255 transitions. Second operand has 219 states, 219 states have (on average 1.1187214611872147) internal successors, (245), 219 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:56:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:56:00,342 INFO L93 Difference]: Finished difference Result 353 states and 411 transitions. [2023-12-20 05:56:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2023-12-20 05:56:00,342 INFO L78 Accepts]: Start accepts. Automaton has has 219 states, 219 states have (on average 1.1187214611872147) internal successors, (245), 219 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2023-12-20 05:56:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:56:00,343 INFO L225 Difference]: With dead ends: 353 [2023-12-20 05:56:00,343 INFO L226 Difference]: Without dead ends: 299 [2023-12-20 05:56:00,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4268 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=19581, Invalid=28161, Unknown=0, NotChecked=0, Total=47742 [2023-12-20 05:56:00,347 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 05:56:00,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 05:56:00,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-20 05:56:00,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-20 05:56:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.0201342281879195) internal successors, (304), 298 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:56:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 304 transitions. [2023-12-20 05:56:00,357 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 304 transitions. Word has length 248 [2023-12-20 05:56:00,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:56:00,357 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 304 transitions. [2023-12-20 05:56:00,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 219 states, 219 states have (on average 1.1187214611872147) internal successors, (245), 219 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:56:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 304 transitions. [2023-12-20 05:56:00,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-12-20 05:56:00,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:56:00,359 INFO L195 NwaCegarLoop]: trace histogram [195, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:56:00,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 05:56:00,572 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,SelfDestructingSolverStorable10 [2023-12-20 05:56:00,572 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:56:00,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:56:00,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1460780324, now seen corresponding path program 10 times [2023-12-20 05:56:00,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:56:00,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107670018] [2023-12-20 05:56:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:56:00,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:56:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:56:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 20122 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-20 05:56:17,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:56:17,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107670018] [2023-12-20 05:56:17,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107670018] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:56:17,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435437051] [2023-12-20 05:56:17,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 05:56:17,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:56:17,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:56:17,951 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) [2023-12-20 05:56:17,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 05:56:18,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 05:56:18,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:56:18,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 197 conjunts are in the unsatisfiable core [2023-12-20 05:56:18,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:56:18,778 INFO L134 CoverageAnalysis]: Checked inductivity of 20122 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-20 05:56:18,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:56:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 20122 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-20 05:56:51,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435437051] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:56:51,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:56:51,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197, 197] total 394 [2023-12-20 05:56:51,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142516462] [2023-12-20 05:56:51,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:56:51,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 395 states [2023-12-20 05:56:51,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:56:51,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 395 interpolants. [2023-12-20 05:56:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77815, Invalid=77815, Unknown=0, NotChecked=0, Total=155630 [2023-12-20 05:56:51,104 INFO L87 Difference]: Start difference. First operand 299 states and 304 transitions. Second operand has 395 states, 395 states have (on average 1.0430379746835443) internal successors, (412), 394 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:56:52,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:56:52,202 INFO L93 Difference]: Finished difference Result 598 states and 804 transitions. [2023-12-20 05:56:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 394 states. [2023-12-20 05:56:52,203 INFO L78 Accepts]: Start accepts. Automaton has has 395 states, 395 states have (on average 1.0430379746835443) internal successors, (412), 394 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 297 [2023-12-20 05:56:52,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:56:52,204 INFO L225 Difference]: With dead ends: 598 [2023-12-20 05:56:52,204 INFO L226 Difference]: Without dead ends: 496 [2023-12-20 05:56:52,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 42.6s TimeCoverageRelationStatistics Valid=77815, Invalid=77815, Unknown=0, NotChecked=0, Total=155630 [2023-12-20 05:56:52,210 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 05:56:52,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 05:56:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-12-20 05:56:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2023-12-20 05:56:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.0121212121212122) internal successors, (501), 495 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:56:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 501 transitions. [2023-12-20 05:56:52,223 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 501 transitions. Word has length 297 [2023-12-20 05:56:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:56:52,224 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 501 transitions. [2023-12-20 05:56:52,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 395 states, 395 states have (on average 1.0430379746835443) internal successors, (412), 394 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:56:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 501 transitions. [2023-12-20 05:56:52,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-20 05:56:52,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:56:52,229 INFO L195 NwaCegarLoop]: trace histogram [392, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:56:52,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 05:56:52,438 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,SelfDestructingSolverStorable11 [2023-12-20 05:56:52,438 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:56:52,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:56:52,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1970379749, now seen corresponding path program 11 times [2023-12-20 05:56:52,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:56:52,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688205070] [2023-12-20 05:56:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:56:52,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:56:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:58:05,832 INFO L134 CoverageAnalysis]: Checked inductivity of 78040 backedges. 0 proven. 77028 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-20 05:58:05,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:58:05,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688205070] [2023-12-20 05:58:05,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688205070] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:58:05,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314099114] [2023-12-20 05:58:05,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 05:58:05,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:58:05,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:58:05,834 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) [2023-12-20 05:58:05,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 06:06:18,403 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 06:06:18,404 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 06:06:19,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 06:06:19,606 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forcibly destroying the process [2023-12-20 06:06:19,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 06:06:19,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 06:06:19,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [394] total 394 [2023-12-20 06:06:19,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865659582] [2023-12-20 06:06:19,624 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 06:06:19,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 395 states [2023-12-20 06:06:19,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:06:19,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 137 [2023-12-20 06:06:19,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 395 interpolants. [2023-12-20 06:06:19,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77815, Invalid=77815, Unknown=0, NotChecked=0, Total=155630 [2023-12-20 06:06:19,644 INFO L87 Difference]: Start difference. First operand 496 states and 501 transitions. Second operand has 395 states, 395 states have (on average 1.0379746835443038) internal successors, (410), 394 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:06:19,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 06:06:19,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.0s TimeCoverageRelationStatistics Valid=77815, Invalid=77815, Unknown=0, NotChecked=0, Total=155630 [2023-12-20 06:06:19,653 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:06:19,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:06:19,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 06:06:19,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 06:06:19,655 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (496states) and FLOYD_HOARE automaton (currently 2 states, 395 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-20 06:06:19,658 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1, 1] [2023-12-20 06:06:19,660 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 06:06:19,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 06:06:19 BoogieIcfgContainer [2023-12-20 06:06:19,661 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 06:06:19,662 INFO L158 Benchmark]: Toolchain (without parser) took 861962.74ms. Allocated memory was 188.7MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 144.9MB in the beginning and 940.3MB in the end (delta: -795.4MB). Peak memory consumption was 552.4MB. Max. memory is 8.0GB. [2023-12-20 06:06:19,662 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 06:06:19,662 INFO L158 Benchmark]: CACSL2BoogieTranslator took 139.95ms. Allocated memory is still 188.7MB. Free memory was 144.9MB in the beginning and 133.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-20 06:06:19,662 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.59ms. Allocated memory is still 188.7MB. Free memory was 133.7MB in the beginning and 131.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 06:06:19,662 INFO L158 Benchmark]: Boogie Preprocessor took 53.38ms. Allocated memory is still 188.7MB. Free memory was 131.8MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 06:06:19,662 INFO L158 Benchmark]: RCFGBuilder took 269.73ms. Allocated memory is still 188.7MB. Free memory was 129.8MB in the beginning and 114.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-20 06:06:19,663 INFO L158 Benchmark]: TraceAbstraction took 861475.07ms. Allocated memory was 188.7MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 113.4MB in the beginning and 940.3MB in the end (delta: -826.9MB). Peak memory consumption was 521.0MB. Max. memory is 8.0GB. [2023-12-20 06:06:19,663 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 139.95ms. Allocated memory is still 188.7MB. Free memory was 144.9MB in the beginning and 133.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.59ms. Allocated memory is still 188.7MB. Free memory was 133.7MB in the beginning and 131.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.38ms. Allocated memory is still 188.7MB. Free memory was 131.8MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 269.73ms. Allocated memory is still 188.7MB. Free memory was 129.8MB in the beginning and 114.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 861475.07ms. Allocated memory was 188.7MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 113.4MB in the beginning and 940.3MB in the end (delta: -826.9MB). Peak memory consumption was 521.0MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (496states) and FLOYD_HOARE automaton (currently 2 states, 395 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 861.4s, OverallIterations: 13, TraceHistogramMax: 392, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 922 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 754 mSDsCounter, 369 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1641 IncrementalHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 369 mSolverCounterUnsat, 168 mSDtfsCounter, 1641 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3118 GetRequests, 1660 SyntacticMatches, 0 SemanticMatches, 1458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6294 ImplicationChecksByTransitivity, 113.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=496occurred in iteration=12, InterpolantAutomatonStates: 1069, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 200.6s SatisfiabilityAnalysisTime, 159.6s InterpolantComputationTime, 2616 NumberOfCodeBlocks, 2394 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 3621 ConstructedInterpolants, 0 QuantifiedInterpolants, 7269 SizeOfPredicates, 1 NumberOfNonLiveVariables, 6620 ConjunctsInSsa, 415 ConjunctsInUnsatCore, 34 InterpolantComputations, 2 PerfectInterpolantSequences, 46422/219219 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