/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:17:15,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:17:15,746 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 19:17:15,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:17:15,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:17:15,781 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:17:15,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:17:15,782 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:17:15,782 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:17:15,782 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:17:15,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:17:15,783 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:17:15,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:17:15,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:17:15,784 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:17:15,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:17:15,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:17:15,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:17:15,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:17:15,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:17:15,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:17:15,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:17:15,785 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:17:15,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:17:15,786 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:17:15,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:17:15,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:17:15,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:17:15,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:17:15,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:17:15,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:17:15,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:17:15,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:17:15,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:17:15,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:17:15,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:17:15,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:17:15,788 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:17:15,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:17:15,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:17:15,788 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:17:16,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:17:16,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:17:16,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:17:16,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:17:16,117 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:17:16,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c [2023-12-16 19:17:17,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:17:17,541 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:17:17,541 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c [2023-12-16 19:17:17,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37db1b983/7b8ec2553f194134869f56261bb069ff/FLAGb1ecea3ab [2023-12-16 19:17:17,579 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37db1b983/7b8ec2553f194134869f56261bb069ff [2023-12-16 19:17:17,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:17:17,583 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:17:17,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:17:17,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:17:17,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:17:17,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:17:17" (1/1) ... [2023-12-16 19:17:17,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5c5761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:17, skipping insertion in model container [2023-12-16 19:17:17,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:17:17" (1/1) ... [2023-12-16 19:17:17,696 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:17:17,934 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c[1176,1189] [2023-12-16 19:17:18,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:17:18,564 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:17:18,574 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c[1176,1189] [2023-12-16 19:17:18,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:17:18,966 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:17:18,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18 WrapperNode [2023-12-16 19:17:18,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:17:18,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:17:18,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:17:18,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:17:18,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:19,101 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:20,603 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20031 [2023-12-16 19:17:20,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:17:20,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:17:20,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:17:20,604 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:17:20,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:20,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:21,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:21,713 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 19:17:21,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:21,713 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:22,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:22,593 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:22,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:22,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:23,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:17:23,065 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:17:23,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:17:23,066 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:17:23,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (1/1) ... [2023-12-16 19:17:23,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:17:23,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:17:23,115 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) [2023-12-16 19:17:23,168 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 [2023-12-16 19:17:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:17:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:17:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:17:23,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:17:23,957 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:17:23,959 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:17:31,681 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:17:32,043 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:17:32,044 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:17:32,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:17:32 BoogieIcfgContainer [2023-12-16 19:17:32,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:17:32,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:17:32,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:17:32,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:17:32,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:17:17" (1/3) ... [2023-12-16 19:17:32,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a5c4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:17:32, skipping insertion in model container [2023-12-16 19:17:32,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:17:18" (2/3) ... [2023-12-16 19:17:32,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a5c4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:17:32, skipping insertion in model container [2023-12-16 19:17:32,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:17:32" (3/3) ... [2023-12-16 19:17:32,050 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.5.prop1-func-interl.c [2023-12-16 19:17:32,061 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:17:32,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:17:32,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:17:32,133 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;@60f757bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:17:32,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:17:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 4298 states, 4296 states have (on average 1.6685288640595903) internal successors, (7168), 4297 states have internal predecessors, (7168), 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) [2023-12-16 19:17:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-16 19:17:32,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:32,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:17:32,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:32,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1516949086, now seen corresponding path program 1 times [2023-12-16 19:17:32,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:32,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063048236] [2023-12-16 19:17:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:32,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:17:32,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:32,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063048236] [2023-12-16 19:17:32,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063048236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:17:32,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:17:32,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:17:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033103182] [2023-12-16 19:17:32,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:32,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:17:32,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:32,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:17:32,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:17:32,958 INFO L87 Difference]: Start difference. First operand has 4298 states, 4296 states have (on average 1.6685288640595903) internal successors, (7168), 4297 states have internal predecessors, (7168), 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 4 states, 4 states have (on average 53.5) internal successors, (214), 4 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) [2023-12-16 19:17:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:33,117 INFO L93 Difference]: Finished difference Result 8433 states and 14067 transitions. [2023-12-16 19:17:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:17:33,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 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 214 [2023-12-16 19:17:33,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:33,142 INFO L225 Difference]: With dead ends: 8433 [2023-12-16 19:17:33,142 INFO L226 Difference]: Without dead ends: 4298 [2023-12-16 19:17:33,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:17:33,152 INFO L413 NwaCegarLoop]: 7161 mSDtfsCounter, 1 mSDsluCounter, 14317 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21478 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:33,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21478 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:17:33,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4298 states. [2023-12-16 19:17:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4298 to 4298. [2023-12-16 19:17:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 1.667675122178264) internal successors, (7166), 4297 states have internal predecessors, (7166), 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) [2023-12-16 19:17:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 7166 transitions. [2023-12-16 19:17:33,246 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 7166 transitions. Word has length 214 [2023-12-16 19:17:33,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:33,247 INFO L495 AbstractCegarLoop]: Abstraction has 4298 states and 7166 transitions. [2023-12-16 19:17:33,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 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) [2023-12-16 19:17:33,247 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 7166 transitions. [2023-12-16 19:17:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-12-16 19:17:33,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:33,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:17:33,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:17:33,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:33,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:33,250 INFO L85 PathProgramCache]: Analyzing trace with hash 220944798, now seen corresponding path program 1 times [2023-12-16 19:17:33,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:33,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843649727] [2023-12-16 19:17:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:33,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:17:33,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:33,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843649727] [2023-12-16 19:17:33,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843649727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:17:33,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:17:33,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:17:33,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298629158] [2023-12-16 19:17:33,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:33,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:17:33,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:33,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:17:33,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:17:33,629 INFO L87 Difference]: Start difference. First operand 4298 states and 7166 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2023-12-16 19:17:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:33,759 INFO L93 Difference]: Finished difference Result 8436 states and 14065 transitions. [2023-12-16 19:17:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:17:33,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 215 [2023-12-16 19:17:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:33,772 INFO L225 Difference]: With dead ends: 8436 [2023-12-16 19:17:33,772 INFO L226 Difference]: Without dead ends: 4301 [2023-12-16 19:17:33,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:17:33,778 INFO L413 NwaCegarLoop]: 7161 mSDtfsCounter, 1 mSDsluCounter, 14315 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21476 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:33,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21476 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:17:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2023-12-16 19:17:33,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 4300. [2023-12-16 19:17:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 1.6673645033728774) internal successors, (7168), 4299 states have internal predecessors, (7168), 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) [2023-12-16 19:17:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 7168 transitions. [2023-12-16 19:17:33,847 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 7168 transitions. Word has length 215 [2023-12-16 19:17:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:33,848 INFO L495 AbstractCegarLoop]: Abstraction has 4300 states and 7168 transitions. [2023-12-16 19:17:33,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2023-12-16 19:17:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 7168 transitions. [2023-12-16 19:17:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-16 19:17:33,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:33,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:17:33,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:17:33,851 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:33,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:33,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1951077060, now seen corresponding path program 1 times [2023-12-16 19:17:33,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:33,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40036764] [2023-12-16 19:17:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:33,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:17:34,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:34,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40036764] [2023-12-16 19:17:34,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40036764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:17:34,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:17:34,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:17:34,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724078357] [2023-12-16 19:17:34,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:34,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:17:34,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:34,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:17:34,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:17:34,294 INFO L87 Difference]: Start difference. First operand 4300 states and 7168 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 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) [2023-12-16 19:17:34,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:34,570 INFO L93 Difference]: Finished difference Result 12711 states and 21192 transitions. [2023-12-16 19:17:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:17:34,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 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 216 [2023-12-16 19:17:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:34,596 INFO L225 Difference]: With dead ends: 12711 [2023-12-16 19:17:34,596 INFO L226 Difference]: Without dead ends: 8574 [2023-12-16 19:17:34,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:17:34,607 INFO L413 NwaCegarLoop]: 7398 mSDtfsCounter, 27852 mSDsluCounter, 14313 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27852 SdHoareTripleChecker+Valid, 21711 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:34,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27852 Valid, 21711 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:17:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8574 states. [2023-12-16 19:17:34,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8574 to 4449. [2023-12-16 19:17:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4449 states, 4448 states have (on average 1.6670413669064748) internal successors, (7415), 4448 states have internal predecessors, (7415), 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) [2023-12-16 19:17:34,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4449 states to 4449 states and 7415 transitions. [2023-12-16 19:17:34,722 INFO L78 Accepts]: Start accepts. Automaton has 4449 states and 7415 transitions. Word has length 216 [2023-12-16 19:17:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:34,723 INFO L495 AbstractCegarLoop]: Abstraction has 4449 states and 7415 transitions. [2023-12-16 19:17:34,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 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) [2023-12-16 19:17:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4449 states and 7415 transitions. [2023-12-16 19:17:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2934 [2023-12-16 19:17:34,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:34,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:17:34,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:17:34,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:34,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:34,877 INFO L85 PathProgramCache]: Analyzing trace with hash -251405756, now seen corresponding path program 1 times [2023-12-16 19:17:34,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:34,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260853670] [2023-12-16 19:17:34,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:34,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:35,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:17:35,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467600774] [2023-12-16 19:17:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:35,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:35,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:17:35,165 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) [2023-12-16 19:17:35,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 19:17:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:39,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 15728 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 19:17:39,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:17:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:17:39,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:17:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-16 19:17:39,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:39,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260853670] [2023-12-16 19:17:39,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:17:39,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467600774] [2023-12-16 19:17:39,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467600774] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 19:17:39,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:17:39,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-16 19:17:40,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854274183] [2023-12-16 19:17:40,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:40,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:17:40,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:40,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:17:40,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:17:40,005 INFO L87 Difference]: Start difference. First operand 4449 states and 7415 transitions. Second operand has 6 states, 6 states have (on average 472.6666666666667) internal successors, (2836), 6 states have internal predecessors, (2836), 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) [2023-12-16 19:17:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:49,365 INFO L93 Difference]: Finished difference Result 20525 states and 34069 transitions. [2023-12-16 19:17:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:17:49,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 472.6666666666667) internal successors, (2836), 6 states have internal predecessors, (2836), 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 2933 [2023-12-16 19:17:49,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:49,437 INFO L225 Difference]: With dead ends: 20525 [2023-12-16 19:17:49,437 INFO L226 Difference]: Without dead ends: 12708 [2023-12-16 19:17:49,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5865 GetRequests, 5854 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-16 19:17:49,451 INFO L413 NwaCegarLoop]: 10675 mSDtfsCounter, 30348 mSDsluCounter, 25975 mSDsCounter, 0 mSdLazyCounter, 13384 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30348 SdHoareTripleChecker+Valid, 36650 SdHoareTripleChecker+Invalid, 13840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 13384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:49,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30348 Valid, 36650 Invalid, 13840 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [456 Valid, 13384 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-12-16 19:17:49,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12708 states. [2023-12-16 19:17:49,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12708 to 4449. [2023-12-16 19:17:49,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4449 states, 4448 states have (on average 1.6670413669064748) internal successors, (7415), 4448 states have internal predecessors, (7415), 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) [2023-12-16 19:17:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4449 states to 4449 states and 7415 transitions. [2023-12-16 19:17:49,557 INFO L78 Accepts]: Start accepts. Automaton has 4449 states and 7415 transitions. Word has length 2933 [2023-12-16 19:17:49,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:49,561 INFO L495 AbstractCegarLoop]: Abstraction has 4449 states and 7415 transitions. [2023-12-16 19:17:49,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 472.6666666666667) internal successors, (2836), 6 states have internal predecessors, (2836), 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) [2023-12-16 19:17:49,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4449 states and 7415 transitions. [2023-12-16 19:17:49,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2935 [2023-12-16 19:17:49,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:49,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:17:49,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 19:17:49,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:49,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:49,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:49,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1898703108, now seen corresponding path program 1 times [2023-12-16 19:17:49,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:49,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618436155] [2023-12-16 19:17:49,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:49,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:50,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:17:50,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357621108] [2023-12-16 19:17:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:50,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:50,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:17:50,142 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) [2023-12-16 19:17:50,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 19:17:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:54,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 15731 conjuncts, 100 conjunts are in the unsatisfiable core [2023-12-16 19:17:54,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:17:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:17:58,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:18:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:18:12,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:18:12,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618436155] [2023-12-16 19:18:12,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:18:12,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357621108] [2023-12-16 19:18:12,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357621108] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 19:18:12,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:18:12,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [39] total 73 [2023-12-16 19:18:12,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224106905] [2023-12-16 19:18:12,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:18:12,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-16 19:18:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:18:12,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-16 19:18:12,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=5017, Unknown=0, NotChecked=0, Total=5256 [2023-12-16 19:18:12,249 INFO L87 Difference]: Start difference. First operand 4449 states and 7415 transitions. Second operand has 37 states, 37 states have (on average 79.29729729729729) internal successors, (2934), 37 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 19:18:18,382 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 [2023-12-16 19:18:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 19:18:18,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5866 GetRequests, 5795 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=239, Invalid=5017, Unknown=0, NotChecked=0, Total=5256 [2023-12-16 19:18:18,387 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 0 mSDsluCounter, 21080 mSDsCounter, 0 mSdLazyCounter, 12615 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22070 SdHoareTripleChecker+Invalid, 12615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:18:18,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22070 Invalid, 12615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 12615 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-16 19:18:18,388 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:18:18,394 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:18:18,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 19:18:18,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:18:18,613 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (4449states) and FLOYD_HOARE automaton (currently 2 states, 37 states before enhancement),while ReachableStatesComputation was computing reachable states (596 states constructed, input type IntersectNwa). [2023-12-16 19:18:18,616 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-16 19:18:18,618 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:18:18,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:18:18 BoogieIcfgContainer [2023-12-16 19:18:18,619 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:18:18,632 INFO L158 Benchmark]: Toolchain (without parser) took 61049.43ms. Allocated memory was 238.0MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 177.0MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-16 19:18:18,633 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:18:18,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1382.73ms. Allocated memory is still 238.0MB. Free memory was 176.6MB in the beginning and 108.3MB in the end (delta: 68.3MB). Peak memory consumption was 123.7MB. Max. memory is 8.0GB. [2023-12-16 19:18:18,633 INFO L158 Benchmark]: Boogie Procedure Inliner took 1635.26ms. Allocated memory was 238.0MB in the beginning and 1.0GB in the end (delta: 768.6MB). Free memory was 108.3MB in the beginning and 643.1MB in the end (delta: -534.8MB). Peak memory consumption was 237.0MB. Max. memory is 8.0GB. [2023-12-16 19:18:18,633 INFO L158 Benchmark]: Boogie Preprocessor took 2460.34ms. Allocated memory was 1.0GB in the beginning and 2.4GB in the end (delta: 1.4GB). Free memory was 643.1MB in the beginning and 1.9GB in the end (delta: -1.3GB). Peak memory consumption was 121.6MB. Max. memory is 8.0GB. [2023-12-16 19:18:18,633 INFO L158 Benchmark]: RCFGBuilder took 8978.91ms. Allocated memory was 2.4GB in the beginning and 3.5GB in the end (delta: 1.1GB). Free memory was 1.9GB in the beginning and 3.0GB in the end (delta: -1.0GB). Peak memory consumption was 502.8MB. Max. memory is 8.0GB. [2023-12-16 19:18:18,634 INFO L158 Benchmark]: TraceAbstraction took 46574.00ms. Allocated memory is still 3.5GB. Free memory was 3.0GB in the beginning and 2.0GB in the end (delta: 922.6MB). Peak memory consumption was 923.1MB. Max. memory is 8.0GB. [2023-12-16 19:18:18,635 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 178.3MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1382.73ms. Allocated memory is still 238.0MB. Free memory was 176.6MB in the beginning and 108.3MB in the end (delta: 68.3MB). Peak memory consumption was 123.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 1635.26ms. Allocated memory was 238.0MB in the beginning and 1.0GB in the end (delta: 768.6MB). Free memory was 108.3MB in the beginning and 643.1MB in the end (delta: -534.8MB). Peak memory consumption was 237.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 2460.34ms. Allocated memory was 1.0GB in the beginning and 2.4GB in the end (delta: 1.4GB). Free memory was 643.1MB in the beginning and 1.9GB in the end (delta: -1.3GB). Peak memory consumption was 121.6MB. Max. memory is 8.0GB. * RCFGBuilder took 8978.91ms. Allocated memory was 2.4GB in the beginning and 3.5GB in the end (delta: 1.1GB). Free memory was 1.9GB in the beginning and 3.0GB in the end (delta: -1.0GB). Peak memory consumption was 502.8MB. Max. memory is 8.0GB. * TraceAbstraction took 46574.00ms. Allocated memory is still 3.5GB. Free memory was 3.0GB in the beginning and 2.0GB in the end (delta: 922.6MB). Peak memory consumption was 923.1MB. 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: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (4449states) and FLOYD_HOARE automaton (currently 2 states, 37 states before enhancement),while ReachableStatesComputation was computing reachable states (596 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4298 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.5s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58202 SdHoareTripleChecker+Valid, 15.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58202 mSDsluCounter, 123385 SdHoareTripleChecker+Invalid, 12.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90000 mSDsCounter, 457 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26047 IncrementalHoareTripleChecker+Invalid, 26504 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 457 mSolverCounterUnsat, 33385 mSDtfsCounter, 26047 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11748 GetRequests, 11656 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4449occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 12385 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.9s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 20.4s InterpolantComputationTime, 6512 NumberOfCodeBlocks, 6512 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 12372 ConstructedInterpolants, 0 QuantifiedInterpolants, 64096 SizeOfPredicates, 42 NumberOfNonLiveVariables, 31459 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 216/416 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