./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 02da88a4f4d1ccaffb329e5ada42e451b6381aa731e6c7a9ccc4142d0ea1fbdc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 22:39:31,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 22:39:31,893 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-12 22:39:31,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 22:39:31,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 22:39:31,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 22:39:31,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 22:39:31,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 22:39:31,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 22:39:31,930 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 22:39:31,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 22:39:31,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 22:39:31,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 22:39:31,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 22:39:31,935 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 22:39:31,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 22:39:31,935 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 22:39:31,936 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 22:39:31,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 22:39:31,936 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 22:39:31,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 22:39:31,940 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 22:39:31,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 22:39:31,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 22:39:31,941 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 22:39:31,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 22:39:31,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 22:39:31,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 22:39:31,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 22:39:31,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 22:39:31,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 22:39:31,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 22:39:31,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 22:39:31,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 22:39:31,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 22:39:31,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 22:39:31,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 22:39:31,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 22:39:31,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 22:39:31,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02da88a4f4d1ccaffb329e5ada42e451b6381aa731e6c7a9ccc4142d0ea1fbdc [2024-10-12 22:39:32,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 22:39:32,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 22:39:32,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 22:39:32,223 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 22:39:32,223 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 22:39:32,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c [2024-10-12 22:39:33,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 22:39:33,854 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 22:39:33,854 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c [2024-10-12 22:39:33,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e769cb27c/3f43cb0e54334e1b8ea4424d54ea3435/FLAGc5a90ac52 [2024-10-12 22:39:33,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e769cb27c/3f43cb0e54334e1b8ea4424d54ea3435 [2024-10-12 22:39:33,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 22:39:33,879 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 22:39:33,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 22:39:33,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 22:39:33,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 22:39:33,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:39:33" (1/1) ... [2024-10-12 22:39:33,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e121374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:33, skipping insertion in model container [2024-10-12 22:39:33,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:39:33" (1/1) ... [2024-10-12 22:39:33,915 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 22:39:34,069 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c[1256,1269] [2024-10-12 22:39:34,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 22:39:34,116 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 22:39:34,130 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c[1256,1269] [2024-10-12 22:39:34,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 22:39:34,155 INFO L204 MainTranslator]: Completed translation [2024-10-12 22:39:34,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34 WrapperNode [2024-10-12 22:39:34,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 22:39:34,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 22:39:34,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 22:39:34,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 22:39:34,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,192 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-10-12 22:39:34,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 22:39:34,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 22:39:34,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 22:39:34,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 22:39:34,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,208 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,220 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]. [2024-10-12 22:39:34,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 22:39:34,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 22:39:34,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 22:39:34,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 22:39:34,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (1/1) ... [2024-10-12 22:39:34,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 22:39:34,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:39:34,275 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) [2024-10-12 22:39:34,278 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 [2024-10-12 22:39:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 22:39:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 22:39:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 22:39:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 22:39:34,403 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 22:39:34,408 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 22:39:34,638 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-10-12 22:39:34,639 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 22:39:34,673 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 22:39:34,674 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 22:39:34,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:39:34 BoogieIcfgContainer [2024-10-12 22:39:34,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 22:39:34,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 22:39:34,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 22:39:34,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 22:39:34,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:39:33" (1/3) ... [2024-10-12 22:39:34,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e1f32b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:39:34, skipping insertion in model container [2024-10-12 22:39:34,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:39:34" (2/3) ... [2024-10-12 22:39:34,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e1f32b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:39:34, skipping insertion in model container [2024-10-12 22:39:34,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:39:34" (3/3) ... [2024-10-12 22:39:34,689 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.count2.c [2024-10-12 22:39:34,708 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 22:39:34,708 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 22:39:34,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 22:39:34,788 INFO L333 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, 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;@7677c863, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 22:39:34,789 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 22:39:34,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:39:34,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-12 22:39:34,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:39:34,801 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 22:39:34,802 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:39:34,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:39:34,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1970922630, now seen corresponding path program 1 times [2024-10-12 22:39:34,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:39:34,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247672445] [2024-10-12 22:39:34,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:34,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:39:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:35,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:35,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:39:35,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247672445] [2024-10-12 22:39:35,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247672445] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:39:35,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:39:35,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 22:39:35,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940848712] [2024-10-12 22:39:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:39:35,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 22:39:35,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:39:35,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 22:39:35,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 22:39:35,518 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 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) [2024-10-12 22:39:35,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:39:35,607 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2024-10-12 22:39:35,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 22:39:35,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2024-10-12 22:39:35,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:39:35,637 INFO L225 Difference]: With dead ends: 27 [2024-10-12 22:39:35,638 INFO L226 Difference]: Without dead ends: 17 [2024-10-12 22:39:35,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 22:39:35,647 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:39:35,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:39:35,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-12 22:39:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-10-12 22:39:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:39:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-10-12 22:39:35,691 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 6 [2024-10-12 22:39:35,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:39:35,692 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-10-12 22:39:35,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 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) [2024-10-12 22:39:35,692 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-10-12 22:39:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-12 22:39:35,693 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:39:35,694 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:39:35,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 22:39:35,694 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:39:35,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:39:35,695 INFO L85 PathProgramCache]: Analyzing trace with hash 253736433, now seen corresponding path program 1 times [2024-10-12 22:39:35,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:39:35,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148049611] [2024-10-12 22:39:35,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:35,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:39:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:35,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:39:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148049611] [2024-10-12 22:39:35,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148049611] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:39:35,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050152200] [2024-10-12 22:39:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:35,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:35,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:39:36,001 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) [2024-10-12 22:39:36,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 22:39:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:36,088 WARN L253 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-12 22:39:36,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:39:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:36,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:39:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:36,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050152200] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:39:36,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 22:39:36,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 8] total 17 [2024-10-12 22:39:36,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827467305] [2024-10-12 22:39:36,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 22:39:36,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 22:39:36,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:39:36,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 22:39:36,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-10-12 22:39:36,597 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 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) [2024-10-12 22:39:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:39:36,776 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2024-10-12 22:39:36,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 22:39:36,777 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 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) Word has length 11 [2024-10-12 22:39:36,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:39:36,778 INFO L225 Difference]: With dead ends: 22 [2024-10-12 22:39:36,779 INFO L226 Difference]: Without dead ends: 20 [2024-10-12 22:39:36,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2024-10-12 22:39:36,782 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 49 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:39:36,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 16 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:39:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-12 22:39:36,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2024-10-12 22:39:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2024-10-12 22:39:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-10-12 22:39:36,791 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2024-10-12 22:39:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:39:36,792 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-10-12 22:39:36,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 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) [2024-10-12 22:39:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-10-12 22:39:36,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-12 22:39:36,793 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:39:36,794 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:39:36,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 22:39:36,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:36,995 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:39:36,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:39:36,996 INFO L85 PathProgramCache]: Analyzing trace with hash -670782200, now seen corresponding path program 1 times [2024-10-12 22:39:36,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:39:36,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730164558] [2024-10-12 22:39:36,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:36,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:39:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:37,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:39:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730164558] [2024-10-12 22:39:37,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730164558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:39:37,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:39:37,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 22:39:37,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930481803] [2024-10-12 22:39:37,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:39:37,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 22:39:37,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:39:37,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 22:39:37,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:39:37,148 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-10-12 22:39:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:39:37,249 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-10-12 22:39:37,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 22:39:37,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2024-10-12 22:39:37,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:39:37,251 INFO L225 Difference]: With dead ends: 35 [2024-10-12 22:39:37,251 INFO L226 Difference]: Without dead ends: 23 [2024-10-12 22:39:37,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:39:37,252 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:39:37,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:39:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-12 22:39:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-10-12 22:39:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2024-10-12 22:39:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-10-12 22:39:37,260 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2024-10-12 22:39:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:39:37,260 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-10-12 22:39:37,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-10-12 22:39:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-10-12 22:39:37,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-12 22:39:37,261 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:39:37,261 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:39:37,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 22:39:37,262 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:39:37,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:39:37,263 INFO L85 PathProgramCache]: Analyzing trace with hash 736681812, now seen corresponding path program 1 times [2024-10-12 22:39:37,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:39:37,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317156626] [2024-10-12 22:39:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:39:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:37,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:39:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317156626] [2024-10-12 22:39:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317156626] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:39:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524522033] [2024-10-12 22:39:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:37,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:37,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:39:37,594 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) [2024-10-12 22:39:37,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 22:39:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:37,648 WARN L253 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-12 22:39:37,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:39:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:37,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:39:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:38,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524522033] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:39:38,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 22:39:38,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 21 [2024-10-12 22:39:38,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524542166] [2024-10-12 22:39:38,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 22:39:38,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-12 22:39:38,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:39:38,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 22:39:38,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-10-12 22:39:38,412 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:39:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:39:38,615 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2024-10-12 22:39:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 22:39:38,616 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-12 22:39:38,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:39:38,616 INFO L225 Difference]: With dead ends: 39 [2024-10-12 22:39:38,617 INFO L226 Difference]: Without dead ends: 27 [2024-10-12 22:39:38,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2024-10-12 22:39:38,618 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 22:39:38,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 42 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 22:39:38,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-12 22:39:38,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-10-12 22:39:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2024-10-12 22:39:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-10-12 22:39:38,626 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2024-10-12 22:39:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:39:38,627 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-10-12 22:39:38,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:39:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-10-12 22:39:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-12 22:39:38,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:39:38,628 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:39:38,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 22:39:38,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-12 22:39:38,829 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:39:38,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:39:38,829 INFO L85 PathProgramCache]: Analyzing trace with hash -753425054, now seen corresponding path program 1 times [2024-10-12 22:39:38,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:39:38,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017958752] [2024-10-12 22:39:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:38,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:39:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:39,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:39:39,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017958752] [2024-10-12 22:39:39,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017958752] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:39:39,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603183066] [2024-10-12 22:39:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:39,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:39,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:39:39,132 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) [2024-10-12 22:39:39,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 22:39:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:39,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-12 22:39:39,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:39:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:39,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:39:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:39,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603183066] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:39:39,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 22:39:39,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-10-12 22:39:39,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640269767] [2024-10-12 22:39:39,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 22:39:39,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 22:39:39,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:39:39,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 22:39:39,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-10-12 22:39:39,722 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 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) [2024-10-12 22:39:39,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:39:39,903 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2024-10-12 22:39:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 22:39:39,904 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 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 [2024-10-12 22:39:39,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:39:39,905 INFO L225 Difference]: With dead ends: 50 [2024-10-12 22:39:39,905 INFO L226 Difference]: Without dead ends: 38 [2024-10-12 22:39:39,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-10-12 22:39:39,907 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:39:39,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 41 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:39:39,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-10-12 22:39:39,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-10-12 22:39:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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) [2024-10-12 22:39:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-10-12 22:39:39,918 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 19 [2024-10-12 22:39:39,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:39:39,918 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-10-12 22:39:39,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 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) [2024-10-12 22:39:39,918 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-10-12 22:39:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-12 22:39:39,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:39:39,919 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-12 22:39:39,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 22:39:40,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:40,120 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:39:40,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:39:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1825246662, now seen corresponding path program 2 times [2024-10-12 22:39:40,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:39:40,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638427944] [2024-10-12 22:39:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:40,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:39:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:40,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:39:40,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638427944] [2024-10-12 22:39:40,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638427944] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:39:40,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108220028] [2024-10-12 22:39:40,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 22:39:40,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:40,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:39:40,626 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) [2024-10-12 22:39:40,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 22:39:40,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 22:39:40,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 22:39:40,712 WARN L253 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-10-12 22:39:40,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:39:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:41,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:39:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:44,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108220028] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:39:44,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 22:39:44,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 16] total 32 [2024-10-12 22:39:44,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463161780] [2024-10-12 22:39:44,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 22:39:44,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-12 22:39:44,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:39:44,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-12 22:39:44,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=910, Unknown=0, NotChecked=0, Total=1056 [2024-10-12 22:39:44,147 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:39:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:39:44,934 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-10-12 22:39:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 22:39:44,935 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-12 22:39:44,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:39:44,935 INFO L225 Difference]: With dead ends: 43 [2024-10-12 22:39:44,935 INFO L226 Difference]: Without dead ends: 41 [2024-10-12 22:39:44,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 22:39:44,938 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 22:39:44,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 22:39:44,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-12 22:39:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2024-10-12 22:39:44,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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) [2024-10-12 22:39:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-10-12 22:39:44,945 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 20 [2024-10-12 22:39:44,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:39:44,945 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-10-12 22:39:44,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:39:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-10-12 22:39:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-12 22:39:44,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:39:44,947 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:39:44,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 22:39:45,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:45,148 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:39:45,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:39:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2137799809, now seen corresponding path program 1 times [2024-10-12 22:39:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:39:45,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177862857] [2024-10-12 22:39:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:45,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:39:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 22:39:45,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:39:45,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177862857] [2024-10-12 22:39:45,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177862857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:39:45,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422466735] [2024-10-12 22:39:45,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:45,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:45,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:39:45,321 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) [2024-10-12 22:39:45,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 22:39:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:45,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 22:39:45,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:39:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 22:39:45,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:39:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 22:39:45,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422466735] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:39:45,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 22:39:45,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-10-12 22:39:45,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74056463] [2024-10-12 22:39:45,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 22:39:45,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 22:39:45,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:39:45,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 22:39:45,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-10-12 22:39:45,696 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 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) [2024-10-12 22:39:45,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:39:45,812 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2024-10-12 22:39:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 22:39:45,812 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 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 31 [2024-10-12 22:39:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:39:45,813 INFO L225 Difference]: With dead ends: 64 [2024-10-12 22:39:45,813 INFO L226 Difference]: Without dead ends: 52 [2024-10-12 22:39:45,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-10-12 22:39:45,815 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:39:45,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:39:45,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-10-12 22:39:45,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-10-12 22:39:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 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) [2024-10-12 22:39:45,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-10-12 22:39:45,824 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 31 [2024-10-12 22:39:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:39:45,825 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-10-12 22:39:45,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 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) [2024-10-12 22:39:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-10-12 22:39:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-12 22:39:45,826 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:39:45,826 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-12 22:39:45,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 22:39:46,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:46,028 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:39:46,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:39:46,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1791191107, now seen corresponding path program 1 times [2024-10-12 22:39:46,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:39:46,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613660386] [2024-10-12 22:39:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:46,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:39:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 22:39:46,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:39:46,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613660386] [2024-10-12 22:39:46,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613660386] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:39:46,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541966044] [2024-10-12 22:39:46,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:46,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:46,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:39:46,239 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) [2024-10-12 22:39:46,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 22:39:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:46,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-12 22:39:46,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:39:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 22:39:46,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:39:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 22:39:47,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541966044] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:39:47,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 22:39:47,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 11] total 22 [2024-10-12 22:39:47,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942415095] [2024-10-12 22:39:47,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 22:39:47,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-12 22:39:47,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:39:47,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-12 22:39:47,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2024-10-12 22:39:47,129 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 states have internal predecessors, (67), 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) [2024-10-12 22:39:47,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:39:47,278 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-10-12 22:39:47,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 22:39:47,279 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 states have internal predecessors, (67), 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 32 [2024-10-12 22:39:47,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:39:47,279 INFO L225 Difference]: With dead ends: 65 [2024-10-12 22:39:47,279 INFO L226 Difference]: Without dead ends: 43 [2024-10-12 22:39:47,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2024-10-12 22:39:47,281 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 23 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:39:47,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:39:47,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-12 22:39:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-10-12 22:39:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 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) [2024-10-12 22:39:47,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-10-12 22:39:47,286 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 32 [2024-10-12 22:39:47,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:39:47,286 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-10-12 22:39:47,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 states have internal predecessors, (67), 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) [2024-10-12 22:39:47,286 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-10-12 22:39:47,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-12 22:39:47,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:39:47,287 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-12 22:39:47,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 22:39:47,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:47,488 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:39:47,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:39:47,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1576286558, now seen corresponding path program 2 times [2024-10-12 22:39:47,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:39:47,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81854823] [2024-10-12 22:39:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:47,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:39:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:48,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:39:48,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81854823] [2024-10-12 22:39:48,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81854823] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:39:48,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627319293] [2024-10-12 22:39:48,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 22:39:48,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:48,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:39:48,124 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) [2024-10-12 22:39:48,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 22:39:48,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 22:39:48,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 22:39:48,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-10-12 22:39:48,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:39:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:49,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:39:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:51,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627319293] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:39:51,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 22:39:51,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 19] total 45 [2024-10-12 22:39:51,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412485543] [2024-10-12 22:39:51,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 22:39:51,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-12 22:39:51,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:39:51,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-12 22:39:51,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1786, Unknown=0, NotChecked=0, Total=2070 [2024-10-12 22:39:51,774 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 states have internal predecessors, (93), 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) [2024-10-12 22:39:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:39:52,738 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2024-10-12 22:39:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 22:39:52,738 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 states have internal predecessors, (93), 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 33 [2024-10-12 22:39:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:39:52,739 INFO L225 Difference]: With dead ends: 79 [2024-10-12 22:39:52,739 INFO L226 Difference]: Without dead ends: 64 [2024-10-12 22:39:52,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=395, Invalid=2467, Unknown=0, NotChecked=0, Total=2862 [2024-10-12 22:39:52,740 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 22:39:52,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 40 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 22:39:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-12 22:39:52,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2024-10-12 22:39:52,750 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) [2024-10-12 22:39:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2024-10-12 22:39:52,750 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 33 [2024-10-12 22:39:52,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:39:52,751 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2024-10-12 22:39:52,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 states have internal predecessors, (93), 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) [2024-10-12 22:39:52,751 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2024-10-12 22:39:52,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 22:39:52,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:39:52,752 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-10-12 22:39:52,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 22:39:52,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:52,953 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:39:52,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:39:52,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1564149510, now seen corresponding path program 3 times [2024-10-12 22:39:52,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:39:52,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555607568] [2024-10-12 22:39:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:52,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:39:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:39:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:39:53,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:39:53,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555607568] [2024-10-12 22:39:53,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555607568] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:39:53,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913378547] [2024-10-12 22:39:53,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 22:39:53,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:39:53,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:39:53,794 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) [2024-10-12 22:39:53,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 22:39:53,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 22:39:53,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 22:39:53,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-12 22:39:53,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:39:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 22:39:54,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:39:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 22:39:55,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913378547] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:39:55,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 22:39:55,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2024-10-12 22:39:55,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241127370] [2024-10-12 22:39:55,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 22:39:55,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-12 22:39:55,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:39:55,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-12 22:39:55,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 22:39:55,746 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 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) [2024-10-12 22:39:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:39:56,351 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2024-10-12 22:39:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-12 22:39:56,351 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 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 [2024-10-12 22:39:56,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:39:56,352 INFO L225 Difference]: With dead ends: 59 [2024-10-12 22:39:56,352 INFO L226 Difference]: Without dead ends: 57 [2024-10-12 22:39:56,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=423, Invalid=2127, Unknown=0, NotChecked=0, Total=2550 [2024-10-12 22:39:56,353 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 24 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 22:39:56,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 22:39:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-12 22:39:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-12 22:39:56,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 56 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:39:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2024-10-12 22:39:56,364 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 34 [2024-10-12 22:39:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:39:56,365 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2024-10-12 22:39:56,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 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) [2024-10-12 22:39:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2024-10-12 22:39:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 22:39:56,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:39:56,366 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2024-10-12 22:39:56,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 22:39:56,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 22:39:56,571 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:39:56,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:39:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash 772837704, now seen corresponding path program 3 times [2024-10-12 22:39:56,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:39:56,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826484196] [2024-10-12 22:39:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:39:56,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:39:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 22:39:56,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 22:39:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 22:39:56,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 22:39:56,791 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-12 22:39:56,792 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 22:39:56,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 22:39:56,798 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1] [2024-10-12 22:39:56,835 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 22:39:56,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:39:56 BoogieIcfgContainer [2024-10-12 22:39:56,838 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 22:39:56,838 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 22:39:56,838 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 22:39:56,838 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 22:39:56,839 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:39:34" (3/4) ... [2024-10-12 22:39:56,841 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 22:39:56,842 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 22:39:56,842 INFO L158 Benchmark]: Toolchain (without parser) took 22963.50ms. Allocated memory was 178.3MB in the beginning and 289.4MB in the end (delta: 111.1MB). Free memory was 121.2MB in the beginning and 204.1MB in the end (delta: -82.9MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2024-10-12 22:39:56,842 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 141.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 22:39:56,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.34ms. Allocated memory is still 178.3MB. Free memory was 121.2MB in the beginning and 109.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 22:39:56,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.27ms. Allocated memory is still 178.3MB. Free memory was 109.0MB in the beginning and 106.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 22:39:56,843 INFO L158 Benchmark]: Boogie Preprocessor took 42.61ms. Allocated memory is still 178.3MB. Free memory was 106.6MB in the beginning and 104.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 22:39:56,843 INFO L158 Benchmark]: RCFGBuilder took 437.48ms. Allocated memory is still 178.3MB. Free memory was 104.8MB in the beginning and 90.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-12 22:39:56,844 INFO L158 Benchmark]: TraceAbstraction took 22159.33ms. Allocated memory was 178.3MB in the beginning and 289.4MB in the end (delta: 111.1MB). Free memory was 89.8MB in the beginning and 205.2MB in the end (delta: -115.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 22:39:56,844 INFO L158 Benchmark]: Witness Printer took 3.70ms. Allocated memory is still 289.4MB. Free memory was 205.2MB in the beginning and 204.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 22:39:56,845 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 141.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.34ms. Allocated memory is still 178.3MB. Free memory was 121.2MB in the beginning and 109.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.27ms. Allocated memory is still 178.3MB. Free memory was 109.0MB in the beginning and 106.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.61ms. Allocated memory is still 178.3MB. Free memory was 106.6MB in the beginning and 104.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 437.48ms. Allocated memory is still 178.3MB. Free memory was 104.8MB in the beginning and 90.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 22159.33ms. Allocated memory was 178.3MB in the beginning and 289.4MB in the end (delta: 111.1MB). Free memory was 89.8MB in the beginning and 205.2MB in the end (delta: -115.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.70ms. Allocated memory is still 289.4MB. Free memory was 205.2MB in the beginning and 204.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 - UnprovableResult [Line: 22]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 55. Possible FailurePath: [L27] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 3); [L28] const SORT_1 msb_SORT_1 = (SORT_1)1 << (3 - 1); [L30] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 1); [L31] const SORT_9 msb_SORT_9 = (SORT_9)1 << (1 - 1); [L33] const SORT_1 var_2 = 0; [L34] const SORT_1 var_5 = 1; [L35] const SORT_1 var_8 = mask_SORT_1; [L38] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=7, var_2=0, var_5=1, var_8=7] [L38] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L40] SORT_1 init_4_arg_1 = var_2; [L41] state_3 = init_4_arg_1 VAL [mask_SORT_1=7, state_3=0, var_5=1, var_8=7] [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=1, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=2, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=3, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=4, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=5, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=6, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=7, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND TRUE !(cond) [L22] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.0s, OverallIterations: 11, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 184 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 184 mSDsluCounter, 289 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 251 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1755 IncrementalHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 38 mSDtfsCounter, 1755 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 509 GetRequests, 255 SyntacticMatches, 6 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2467 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=10, InterpolantAutomatonStates: 127, 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, 10 MinimizatonAttempts, 27 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 458 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 571 ConstructedInterpolants, 17 QuantifiedInterpolants, 11726 SizeOfPredicates, 25 NumberOfNonLiveVariables, 953 ConjunctsInSsa, 386 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 308/626 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: unable to determine feasibility of some traces [2024-10-12 22:39:56,881 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 02da88a4f4d1ccaffb329e5ada42e451b6381aa731e6c7a9ccc4142d0ea1fbdc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 22:39:59,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 22:39:59,090 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-10-12 22:39:59,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 22:39:59,095 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 22:39:59,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 22:39:59,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 22:39:59,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 22:39:59,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 22:39:59,133 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 22:39:59,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 22:39:59,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 22:39:59,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 22:39:59,135 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 22:39:59,136 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 22:39:59,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 22:39:59,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 22:39:59,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 22:39:59,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 22:39:59,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 22:39:59,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 22:39:59,142 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-12 22:39:59,142 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-12 22:39:59,142 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 22:39:59,142 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-12 22:39:59,143 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 22:39:59,143 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 22:39:59,144 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 22:39:59,144 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 22:39:59,144 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 22:39:59,144 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 22:39:59,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 22:39:59,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 22:39:59,145 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 22:39:59,145 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 22:39:59,146 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-12 22:39:59,146 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-12 22:39:59,146 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 22:39:59,146 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 22:39:59,147 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 22:39:59,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 22:39:59,148 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-12 22:39:59,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02da88a4f4d1ccaffb329e5ada42e451b6381aa731e6c7a9ccc4142d0ea1fbdc [2024-10-12 22:39:59,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 22:39:59,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 22:39:59,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 22:39:59,515 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 22:39:59,515 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 22:39:59,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c [2024-10-12 22:40:01,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 22:40:01,245 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 22:40:01,246 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c [2024-10-12 22:40:01,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d1d334b/f7da1098d3a84da981a41b47addd64c2/FLAG59f92f8f2 [2024-10-12 22:40:01,265 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d1d334b/f7da1098d3a84da981a41b47addd64c2 [2024-10-12 22:40:01,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 22:40:01,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 22:40:01,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 22:40:01,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 22:40:01,276 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 22:40:01,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1299257f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01, skipping insertion in model container [2024-10-12 22:40:01,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,299 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 22:40:01,475 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c[1256,1269] [2024-10-12 22:40:01,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 22:40:01,523 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 22:40:01,534 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c[1256,1269] [2024-10-12 22:40:01,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 22:40:01,565 INFO L204 MainTranslator]: Completed translation [2024-10-12 22:40:01,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01 WrapperNode [2024-10-12 22:40:01,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 22:40:01,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 22:40:01,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 22:40:01,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 22:40:01,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,593 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,611 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2024-10-12 22:40:01,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 22:40:01,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 22:40:01,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 22:40:01,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 22:40:01,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,637 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]. [2024-10-12 22:40:01,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,656 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 22:40:01,657 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 22:40:01,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 22:40:01,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 22:40:01,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (1/1) ... [2024-10-12 22:40:01,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 22:40:01,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:40:01,692 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) [2024-10-12 22:40:01,699 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 [2024-10-12 22:40:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 22:40:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-12 22:40:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 22:40:01,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 22:40:01,817 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 22:40:01,819 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 22:40:01,968 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-10-12 22:40:01,972 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 22:40:02,013 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 22:40:02,013 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 22:40:02,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:40:02 BoogieIcfgContainer [2024-10-12 22:40:02,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 22:40:02,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 22:40:02,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 22:40:02,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 22:40:02,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:40:01" (1/3) ... [2024-10-12 22:40:02,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4c5922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:40:02, skipping insertion in model container [2024-10-12 22:40:02,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:40:01" (2/3) ... [2024-10-12 22:40:02,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4c5922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:40:02, skipping insertion in model container [2024-10-12 22:40:02,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:40:02" (3/3) ... [2024-10-12 22:40:02,027 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.count2.c [2024-10-12 22:40:02,044 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 22:40:02,044 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 22:40:02,096 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 22:40:02,103 INFO L333 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, 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;@3c049176, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 22:40:02,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 22:40:02,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2024-10-12 22:40:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-12 22:40:02,113 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:40:02,113 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-12 22:40:02,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:40:02,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:40:02,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1614770, now seen corresponding path program 1 times [2024-10-12 22:40:02,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 22:40:02,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368934464] [2024-10-12 22:40:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:40:02,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 22:40:02,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 22:40:02,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-12 22:40:02,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-12 22:40:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:40:02,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 22:40:02,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:40:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:40:02,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 22:40:02,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-12 22:40:02,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368934464] [2024-10-12 22:40:02,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368934464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:40:02,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:40:02,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 22:40:02,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45626335] [2024-10-12 22:40:02,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:40:02,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:40:02,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-12 22:40:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:40:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:40:02,396 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-10-12 22:40:02,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:40:02,469 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2024-10-12 22:40:02,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:40:02,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-10-12 22:40:02,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:40:02,479 INFO L225 Difference]: With dead ends: 15 [2024-10-12 22:40:02,480 INFO L226 Difference]: Without dead ends: 9 [2024-10-12 22:40:02,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:40:02,490 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:40:02,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:40:02,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-10-12 22:40:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2024-10-12 22:40:02,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2024-10-12 22:40:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-10-12 22:40:02,520 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2024-10-12 22:40:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:40:02,521 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-10-12 22:40:02,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-10-12 22:40:02,521 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-10-12 22:40:02,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-12 22:40:02,521 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:40:02,521 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-12 22:40:02,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-12 22:40:02,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 22:40:02,725 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:40:02,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:40:02,726 INFO L85 PathProgramCache]: Analyzing trace with hash 865745430, now seen corresponding path program 1 times [2024-10-12 22:40:02,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 22:40:02,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67216275] [2024-10-12 22:40:02,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:40:02,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 22:40:02,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 22:40:02,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-12 22:40:02,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-12 22:40:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:40:02,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 22:40:02,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:40:02,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:40:02,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:40:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:40:03,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-12 22:40:03,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67216275] [2024-10-12 22:40:03,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67216275] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:40:03,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 22:40:03,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-12 22:40:03,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094539809] [2024-10-12 22:40:03,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 22:40:03,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 22:40:03,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-12 22:40:03,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 22:40:03,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 22:40:03,006 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2024-10-12 22:40:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:40:03,117 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-10-12 22:40:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 22:40:03,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 7 [2024-10-12 22:40:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:40:03,119 INFO L225 Difference]: With dead ends: 17 [2024-10-12 22:40:03,119 INFO L226 Difference]: Without dead ends: 15 [2024-10-12 22:40:03,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-10-12 22:40:03,121 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:40:03,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:40:03,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-12 22:40:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-10-12 22:40:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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) [2024-10-12 22:40:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2024-10-12 22:40:03,130 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2024-10-12 22:40:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:40:03,131 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2024-10-12 22:40:03,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2024-10-12 22:40:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2024-10-12 22:40:03,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-12 22:40:03,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:40:03,132 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2024-10-12 22:40:03,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-12 22:40:03,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 22:40:03,335 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:40:03,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:40:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1748931734, now seen corresponding path program 2 times [2024-10-12 22:40:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 22:40:03,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530537067] [2024-10-12 22:40:03,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 22:40:03,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 22:40:03,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 22:40:03,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-12 22:40:03,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-12 22:40:03,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 22:40:03,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 22:40:03,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 22:40:03,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:40:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:40:03,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:40:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:40:03,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-12 22:40:03,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530537067] [2024-10-12 22:40:03,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530537067] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:40:03,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 22:40:03,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-12 22:40:03,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688462860] [2024-10-12 22:40:03,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 22:40:03,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 22:40:03,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-12 22:40:03,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 22:40:03,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-12 22:40:03,731 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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) [2024-10-12 22:40:04,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:40:04,054 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-10-12 22:40:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 22:40:04,056 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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 13 [2024-10-12 22:40:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:40:04,057 INFO L225 Difference]: With dead ends: 29 [2024-10-12 22:40:04,057 INFO L226 Difference]: Without dead ends: 27 [2024-10-12 22:40:04,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2024-10-12 22:40:04,059 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:40:04,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 19 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:40:04,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-12 22:40:04,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-10-12 22:40:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 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) [2024-10-12 22:40:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2024-10-12 22:40:04,070 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 13 [2024-10-12 22:40:04,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:40:04,071 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2024-10-12 22:40:04,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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) [2024-10-12 22:40:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2024-10-12 22:40:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 22:40:04,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:40:04,072 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1] [2024-10-12 22:40:04,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-12 22:40:04,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 22:40:04,273 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:40:04,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:40:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1505384042, now seen corresponding path program 3 times [2024-10-12 22:40:04,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 22:40:04,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243317722] [2024-10-12 22:40:04,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 22:40:04,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 22:40:04,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 22:40:04,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-12 22:40:04,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-12 22:40:04,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-10-12 22:40:04,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2024-10-12 22:40:04,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 22:40:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 22:40:04,429 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-10-12 22:40:04,438 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-12 22:40:04,440 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 22:40:04,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-12 22:40:04,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 22:40:04,645 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-12 22:40:04,667 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 22:40:04,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:40:04 BoogieIcfgContainer [2024-10-12 22:40:04,669 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 22:40:04,670 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 22:40:04,670 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 22:40:04,670 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 22:40:04,671 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:40:02" (3/4) ... [2024-10-12 22:40:04,672 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-12 22:40:04,728 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 22:40:04,728 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 22:40:04,728 INFO L158 Benchmark]: Toolchain (without parser) took 3460.05ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 37.3MB in the beginning and 56.7MB in the end (delta: -19.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 22:40:04,729 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 22:40:04,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.16ms. Allocated memory is still 69.2MB. Free memory was 37.0MB in the beginning and 24.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 22:40:04,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.06ms. Allocated memory is still 69.2MB. Free memory was 24.4MB in the beginning and 48.6MB in the end (delta: -24.2MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2024-10-12 22:40:04,729 INFO L158 Benchmark]: Boogie Preprocessor took 42.74ms. Allocated memory is still 69.2MB. Free memory was 48.6MB in the beginning and 47.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 22:40:04,730 INFO L158 Benchmark]: RCFGBuilder took 357.08ms. Allocated memory is still 69.2MB. Free memory was 47.0MB in the beginning and 34.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 22:40:04,730 INFO L158 Benchmark]: TraceAbstraction took 2651.78ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 34.1MB in the beginning and 60.4MB in the end (delta: -26.3MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2024-10-12 22:40:04,730 INFO L158 Benchmark]: Witness Printer took 57.99ms. Allocated memory is still 83.9MB. Free memory was 60.4MB in the beginning and 56.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 22:40:04,732 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.16ms. Allocated memory is still 69.2MB. Free memory was 37.0MB in the beginning and 24.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.06ms. Allocated memory is still 69.2MB. Free memory was 24.4MB in the beginning and 48.6MB in the end (delta: -24.2MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.74ms. Allocated memory is still 69.2MB. Free memory was 48.6MB in the beginning and 47.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 357.08ms. Allocated memory is still 69.2MB. Free memory was 47.0MB in the beginning and 34.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2651.78ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 34.1MB in the beginning and 60.4MB in the end (delta: -26.3MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * Witness Printer took 57.99ms. Allocated memory is still 83.9MB. Free memory was 60.4MB in the beginning and 56.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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 - CounterExampleResult [Line: 22]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L27] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 3); [L28] const SORT_1 msb_SORT_1 = (SORT_1)1 << (3 - 1); [L30] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 1); [L31] const SORT_9 msb_SORT_9 = (SORT_9)1 << (1 - 1); [L33] const SORT_1 var_2 = 0; [L34] const SORT_1 var_5 = 1; [L35] const SORT_1 var_8 = mask_SORT_1; [L38] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L40] SORT_1 init_4_arg_1 = var_2; [L41] state_3 = init_4_arg_1 VAL [mask_SORT_1=7, state_3=0, var_5=1, var_8=7] [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND TRUE !(cond) [L22] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 131 IncrementalHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 6 mSDtfsCounter, 131 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 493 SizeOfPredicates, 11 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/34 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 proved your program to be incorrect! [2024-10-12 22:40:04,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE