./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.h_CRC.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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.h_CRC.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 217c4f5eefa3b0856788b7ca9679c9bd3ae2e76dd46c0382e56b3111181a98a9 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 06:20:22,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 06:20:22,582 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-14 06:20:22,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 06:20:22,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 06:20:22,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 06:20:22,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 06:20:22,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 06:20:22,640 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 06:20:22,641 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 06:20:22,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 06:20:22,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 06:20:22,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 06:20:22,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 06:20:22,645 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 06:20:22,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 06:20:22,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 06:20:22,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 06:20:22,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 06:20:22,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 06:20:22,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 06:20:22,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 06:20:22,651 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 06:20:22,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 06:20:22,651 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 06:20:22,651 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 06:20:22,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 06:20:22,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 06:20:22,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 06:20:22,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:20:22,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 06:20:22,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 06:20:22,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 06:20:22,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 06:20:22,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 06:20:22,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 06:20:22,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 06:20:22,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 06:20:22,657 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 06:20:22,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 217c4f5eefa3b0856788b7ca9679c9bd3ae2e76dd46c0382e56b3111181a98a9 [2024-10-14 06:20:22,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 06:20:22,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 06:20:22,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 06:20:22,973 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 06:20:22,974 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 06:20:22,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c [2024-10-14 06:20:24,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 06:20:25,117 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 06:20:25,118 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c [2024-10-14 06:20:25,133 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/722d1909e/5d499e0869c5435598e529db2e42c096/FLAG3dcf1e567 [2024-10-14 06:20:25,150 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/722d1909e/5d499e0869c5435598e529db2e42c096 [2024-10-14 06:20:25,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 06:20:25,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 06:20:25,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 06:20:25,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 06:20:25,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 06:20:25,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:20:25" (1/1) ... [2024-10-14 06:20:25,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d610da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:25, skipping insertion in model container [2024-10-14 06:20:25,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:20:25" (1/1) ... [2024-10-14 06:20:25,275 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 06:20:25,672 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.h_CRC.c[1245,1258] [2024-10-14 06:20:26,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:20:26,126 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 06:20:26,138 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.h_CRC.c[1245,1258] [2024-10-14 06:20:26,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:20:26,256 INFO L204 MainTranslator]: Completed translation [2024-10-14 06:20:26,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26 WrapperNode [2024-10-14 06:20:26,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 06:20:26,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 06:20:26,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 06:20:26,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 06:20:26,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:26,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:26,661 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2320 [2024-10-14 06:20:26,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 06:20:26,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 06:20:26,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 06:20:26,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 06:20:26,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:26,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:26,769 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:26,830 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-10-14 06:20:26,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:26,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:26,889 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:26,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:26,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:26,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:27,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 06:20:27,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 06:20:27,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 06:20:27,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 06:20:27,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (1/1) ... [2024-10-14 06:20:27,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:20:27,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 06:20:27,234 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) [2024-10-14 06:20:27,246 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 [2024-10-14 06:20:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 06:20:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 06:20:27,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 06:20:27,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 06:20:27,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 06:20:27,646 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 06:20:27,648 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 06:20:30,754 INFO L? ?]: Removed 1447 outVars from TransFormulas that were not future-live. [2024-10-14 06:20:30,754 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 06:20:30,828 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 06:20:30,829 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 06:20:30,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:20:30 BoogieIcfgContainer [2024-10-14 06:20:30,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 06:20:30,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 06:20:30,831 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 06:20:30,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 06:20:30,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:20:25" (1/3) ... [2024-10-14 06:20:30,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63767d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:20:30, skipping insertion in model container [2024-10-14 06:20:30,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:26" (2/3) ... [2024-10-14 06:20:30,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63767d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:20:30, skipping insertion in model container [2024-10-14 06:20:30,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:20:30" (3/3) ... [2024-10-14 06:20:30,838 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_CRC.c [2024-10-14 06:20:30,855 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 06:20:30,855 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 06:20:30,930 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 06:20:30,937 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;@7463494c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 06:20:30,938 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 06:20:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 830 states, 828 states have (on average 1.565217391304348) internal successors, (1296), 829 states have internal predecessors, (1296), 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) [2024-10-14 06:20:30,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-14 06:20:30,954 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:20:30,955 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:20:30,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:20:30,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:20:30,961 INFO L85 PathProgramCache]: Analyzing trace with hash -954947348, now seen corresponding path program 1 times [2024-10-14 06:20:30,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:20:30,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176733476] [2024-10-14 06:20:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:20:30,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:20:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:20:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:20:31,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:20:31,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176733476] [2024-10-14 06:20:31,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176733476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:20:31,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:20:31,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:20:31,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325555570] [2024-10-14 06:20:31,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:20:31,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 06:20:31,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:20:31,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 06:20:31,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:20:31,530 INFO L87 Difference]: Start difference. First operand has 830 states, 828 states have (on average 1.565217391304348) internal successors, (1296), 829 states have internal predecessors, (1296), 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 5.0) internal successors, (20), 4 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) [2024-10-14 06:20:31,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:20:31,674 INFO L93 Difference]: Finished difference Result 1656 states and 2588 transitions. [2024-10-14 06:20:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:20:31,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) Word has length 20 [2024-10-14 06:20:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:20:31,700 INFO L225 Difference]: With dead ends: 1656 [2024-10-14 06:20:31,700 INFO L226 Difference]: Without dead ends: 831 [2024-10-14 06:20:31,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:20:31,713 INFO L432 NwaCegarLoop]: 1291 mSDtfsCounter, 0 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 06:20:31,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3868 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:20:31,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-10-14 06:20:31,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 831. [2024-10-14 06:20:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 1.5614457831325301) internal successors, (1296), 830 states have internal predecessors, (1296), 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) [2024-10-14 06:20:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1296 transitions. [2024-10-14 06:20:31,792 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1296 transitions. Word has length 20 [2024-10-14 06:20:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:20:31,793 INFO L471 AbstractCegarLoop]: Abstraction has 831 states and 1296 transitions. [2024-10-14 06:20:31,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2024-10-14 06:20:31,793 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1296 transitions. [2024-10-14 06:20:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 06:20:31,794 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:20:31,794 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:20:31,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 06:20:31,795 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:20:31,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:20:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash 463098541, now seen corresponding path program 1 times [2024-10-14 06:20:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:20:31,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001470412] [2024-10-14 06:20:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:20:31,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:20:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:20:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:20:31,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:20:31,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001470412] [2024-10-14 06:20:31,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001470412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:20:31,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:20:31,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:20:31,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970862350] [2024-10-14 06:20:31,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:20:31,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 06:20:31,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:20:31,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 06:20:31,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:20:31,951 INFO L87 Difference]: Start difference. First operand 831 states and 1296 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-10-14 06:20:32,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:20:32,001 INFO L93 Difference]: Finished difference Result 1659 states and 2588 transitions. [2024-10-14 06:20:32,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:20:32,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) Word has length 21 [2024-10-14 06:20:32,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:20:32,006 INFO L225 Difference]: With dead ends: 1659 [2024-10-14 06:20:32,006 INFO L226 Difference]: Without dead ends: 833 [2024-10-14 06:20:32,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:20:32,012 INFO L432 NwaCegarLoop]: 1291 mSDtfsCounter, 0 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 06:20:32,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3865 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:20:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2024-10-14 06:20:32,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2024-10-14 06:20:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 1.5600961538461537) internal successors, (1298), 832 states have internal predecessors, (1298), 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) [2024-10-14 06:20:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1298 transitions. [2024-10-14 06:20:32,110 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1298 transitions. Word has length 21 [2024-10-14 06:20:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:20:32,110 INFO L471 AbstractCegarLoop]: Abstraction has 833 states and 1298 transitions. [2024-10-14 06:20:32,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-10-14 06:20:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1298 transitions. [2024-10-14 06:20:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-14 06:20:32,112 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:20:32,112 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:20:32,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 06:20:32,113 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:20:32,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:20:32,114 INFO L85 PathProgramCache]: Analyzing trace with hash 373187045, now seen corresponding path program 1 times [2024-10-14 06:20:32,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:20:32,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348032204] [2024-10-14 06:20:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:20:32,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:20:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:20:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:20:32,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:20:32,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348032204] [2024-10-14 06:20:32,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348032204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:20:32,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:20:32,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:20:32,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722032734] [2024-10-14 06:20:32,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:20:32,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 06:20:32,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:20:32,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 06:20:32,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:20:32,509 INFO L87 Difference]: Start difference. First operand 833 states and 1298 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:20:32,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:20:32,826 INFO L93 Difference]: Finished difference Result 2481 states and 3870 transitions. [2024-10-14 06:20:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 06:20:32,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-14 06:20:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:20:32,835 INFO L225 Difference]: With dead ends: 2481 [2024-10-14 06:20:32,836 INFO L226 Difference]: Without dead ends: 1653 [2024-10-14 06:20:32,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-14 06:20:32,839 INFO L432 NwaCegarLoop]: 1259 mSDtfsCounter, 3839 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3839 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 06:20:32,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3839 Valid, 3775 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 06:20:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2024-10-14 06:20:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 831. [2024-10-14 06:20:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 1.5590361445783132) internal successors, (1294), 830 states have internal predecessors, (1294), 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) [2024-10-14 06:20:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1294 transitions. [2024-10-14 06:20:32,873 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1294 transitions. Word has length 22 [2024-10-14 06:20:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:20:32,874 INFO L471 AbstractCegarLoop]: Abstraction has 831 states and 1294 transitions. [2024-10-14 06:20:32,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:20:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1294 transitions. [2024-10-14 06:20:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 06:20:32,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:20:32,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:20:32,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 06:20:32,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:20:32,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:20:32,877 INFO L85 PathProgramCache]: Analyzing trace with hash 248441712, now seen corresponding path program 1 times [2024-10-14 06:20:32,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:20:32,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945890668] [2024-10-14 06:20:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:20:32,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:20:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 06:20:32,926 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 06:20:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 06:20:33,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 06:20:33,024 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 06:20:33,025 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 06:20:33,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 06:20:33,030 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-14 06:20:33,076 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 06:20:33,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:20:33 BoogieIcfgContainer [2024-10-14 06:20:33,080 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 06:20:33,080 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 06:20:33,081 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 06:20:33,081 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 06:20:33,081 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:20:30" (3/4) ... [2024-10-14 06:20:33,083 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-14 06:20:33,084 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 06:20:33,085 INFO L158 Benchmark]: Toolchain (without parser) took 7930.01ms. Allocated memory was 169.9MB in the beginning and 503.3MB in the end (delta: 333.4MB). Free memory was 139.1MB in the beginning and 292.8MB in the end (delta: -153.7MB). Peak memory consumption was 180.1MB. Max. memory is 16.1GB. [2024-10-14 06:20:33,085 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 06:20:33,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1101.95ms. Allocated memory is still 169.9MB. Free memory was 138.9MB in the beginning and 104.1MB in the end (delta: 34.9MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2024-10-14 06:20:33,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 403.80ms. Allocated memory is still 169.9MB. Free memory was 103.3MB in the beginning and 98.4MB in the end (delta: 4.9MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2024-10-14 06:20:33,086 INFO L158 Benchmark]: Boogie Preprocessor took 350.01ms. Allocated memory is still 169.9MB. Free memory was 98.4MB in the beginning and 72.7MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-14 06:20:33,086 INFO L158 Benchmark]: RCFGBuilder took 3815.33ms. Allocated memory was 169.9MB in the beginning and 337.6MB in the end (delta: 167.8MB). Free memory was 72.7MB in the beginning and 196.1MB in the end (delta: -123.4MB). Peak memory consumption was 122.4MB. Max. memory is 16.1GB. [2024-10-14 06:20:33,087 INFO L158 Benchmark]: TraceAbstraction took 2248.55ms. Allocated memory was 337.6MB in the beginning and 503.3MB in the end (delta: 165.7MB). Free memory was 196.1MB in the beginning and 293.9MB in the end (delta: -97.8MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2024-10-14 06:20:33,087 INFO L158 Benchmark]: Witness Printer took 3.68ms. Allocated memory is still 503.3MB. Free memory is still 292.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 06:20:33,089 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1101.95ms. Allocated memory is still 169.9MB. Free memory was 138.9MB in the beginning and 104.1MB in the end (delta: 34.9MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 403.80ms. Allocated memory is still 169.9MB. Free memory was 103.3MB in the beginning and 98.4MB in the end (delta: 4.9MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 350.01ms. Allocated memory is still 169.9MB. Free memory was 98.4MB in the beginning and 72.7MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * RCFGBuilder took 3815.33ms. Allocated memory was 169.9MB in the beginning and 337.6MB in the end (delta: 167.8MB). Free memory was 72.7MB in the beginning and 196.1MB in the end (delta: -123.4MB). Peak memory consumption was 122.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2248.55ms. Allocated memory was 337.6MB in the beginning and 503.3MB in the end (delta: 165.7MB). Free memory was 196.1MB in the beginning and 293.9MB in the end (delta: -97.8MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. * Witness Printer took 3.68ms. Allocated memory is still 503.3MB. Free memory is still 292.8MB. There was no memory consumed. 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: 21]: 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 159. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 8); [L30] const SORT_5 msb_SORT_5 = (SORT_5)1 << (8 - 1); [L32] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 32); [L33] const SORT_9 msb_SORT_9 = (SORT_9)1 << (32 - 1); [L35] const SORT_161 mask_SORT_161 = (SORT_161)-1 >> (sizeof(SORT_161) * 8 - 2); [L36] const SORT_161 msb_SORT_161 = (SORT_161)1 << (2 - 1); [L38] const SORT_163 mask_SORT_163 = (SORT_163)-1 >> (sizeof(SORT_163) * 8 - 3); [L39] const SORT_163 msb_SORT_163 = (SORT_163)1 << (3 - 1); [L41] const SORT_165 mask_SORT_165 = (SORT_165)-1 >> (sizeof(SORT_165) * 8 - 4); [L42] const SORT_165 msb_SORT_165 = (SORT_165)1 << (4 - 1); [L44] const SORT_167 mask_SORT_167 = (SORT_167)-1 >> (sizeof(SORT_167) * 8 - 5); [L45] const SORT_167 msb_SORT_167 = (SORT_167)1 << (5 - 1); [L47] const SORT_169 mask_SORT_169 = (SORT_169)-1 >> (sizeof(SORT_169) * 8 - 6); [L48] const SORT_169 msb_SORT_169 = (SORT_169)1 << (6 - 1); [L50] const SORT_171 mask_SORT_171 = (SORT_171)-1 >> (sizeof(SORT_171) * 8 - 7); [L51] const SORT_171 msb_SORT_171 = (SORT_171)1 << (7 - 1); [L53] const SORT_174 mask_SORT_174 = (SORT_174)-1 >> (sizeof(SORT_174) * 8 - 9); [L54] const SORT_174 msb_SORT_174 = (SORT_174)1 << (9 - 1); [L56] const SORT_176 mask_SORT_176 = (SORT_176)-1 >> (sizeof(SORT_176) * 8 - 10); [L57] const SORT_176 msb_SORT_176 = (SORT_176)1 << (10 - 1); [L59] const SORT_178 mask_SORT_178 = (SORT_178)-1 >> (sizeof(SORT_178) * 8 - 11); [L60] const SORT_178 msb_SORT_178 = (SORT_178)1 << (11 - 1); [L62] const SORT_180 mask_SORT_180 = (SORT_180)-1 >> (sizeof(SORT_180) * 8 - 12); [L63] const SORT_180 msb_SORT_180 = (SORT_180)1 << (12 - 1); [L65] const SORT_182 mask_SORT_182 = (SORT_182)-1 >> (sizeof(SORT_182) * 8 - 13); [L66] const SORT_182 msb_SORT_182 = (SORT_182)1 << (13 - 1); [L68] const SORT_184 mask_SORT_184 = (SORT_184)-1 >> (sizeof(SORT_184) * 8 - 14); [L69] const SORT_184 msb_SORT_184 = (SORT_184)1 << (14 - 1); [L71] const SORT_186 mask_SORT_186 = (SORT_186)-1 >> (sizeof(SORT_186) * 8 - 15); [L72] const SORT_186 msb_SORT_186 = (SORT_186)1 << (15 - 1); [L74] const SORT_188 mask_SORT_188 = (SORT_188)-1 >> (sizeof(SORT_188) * 8 - 16); [L75] const SORT_188 msb_SORT_188 = (SORT_188)1 << (16 - 1); [L77] const SORT_190 mask_SORT_190 = (SORT_190)-1 >> (sizeof(SORT_190) * 8 - 17); [L78] const SORT_190 msb_SORT_190 = (SORT_190)1 << (17 - 1); [L80] const SORT_192 mask_SORT_192 = (SORT_192)-1 >> (sizeof(SORT_192) * 8 - 18); [L81] const SORT_192 msb_SORT_192 = (SORT_192)1 << (18 - 1); [L83] const SORT_194 mask_SORT_194 = (SORT_194)-1 >> (sizeof(SORT_194) * 8 - 19); [L84] const SORT_194 msb_SORT_194 = (SORT_194)1 << (19 - 1); [L86] const SORT_196 mask_SORT_196 = (SORT_196)-1 >> (sizeof(SORT_196) * 8 - 20); [L87] const SORT_196 msb_SORT_196 = (SORT_196)1 << (20 - 1); [L89] const SORT_198 mask_SORT_198 = (SORT_198)-1 >> (sizeof(SORT_198) * 8 - 21); [L90] const SORT_198 msb_SORT_198 = (SORT_198)1 << (21 - 1); [L92] const SORT_200 mask_SORT_200 = (SORT_200)-1 >> (sizeof(SORT_200) * 8 - 22); [L93] const SORT_200 msb_SORT_200 = (SORT_200)1 << (22 - 1); [L95] const SORT_202 mask_SORT_202 = (SORT_202)-1 >> (sizeof(SORT_202) * 8 - 23); [L96] const SORT_202 msb_SORT_202 = (SORT_202)1 << (23 - 1); [L98] const SORT_204 mask_SORT_204 = (SORT_204)-1 >> (sizeof(SORT_204) * 8 - 24); [L99] const SORT_204 msb_SORT_204 = (SORT_204)1 << (24 - 1); [L101] const SORT_206 mask_SORT_206 = (SORT_206)-1 >> (sizeof(SORT_206) * 8 - 25); [L102] const SORT_206 msb_SORT_206 = (SORT_206)1 << (25 - 1); [L104] const SORT_208 mask_SORT_208 = (SORT_208)-1 >> (sizeof(SORT_208) * 8 - 26); [L105] const SORT_208 msb_SORT_208 = (SORT_208)1 << (26 - 1); [L107] const SORT_210 mask_SORT_210 = (SORT_210)-1 >> (sizeof(SORT_210) * 8 - 27); [L108] const SORT_210 msb_SORT_210 = (SORT_210)1 << (27 - 1); [L110] const SORT_212 mask_SORT_212 = (SORT_212)-1 >> (sizeof(SORT_212) * 8 - 28); [L111] const SORT_212 msb_SORT_212 = (SORT_212)1 << (28 - 1); [L113] const SORT_214 mask_SORT_214 = (SORT_214)-1 >> (sizeof(SORT_214) * 8 - 29); [L114] const SORT_214 msb_SORT_214 = (SORT_214)1 << (29 - 1); [L116] const SORT_216 mask_SORT_216 = (SORT_216)-1 >> (sizeof(SORT_216) * 8 - 30); [L117] const SORT_216 msb_SORT_216 = (SORT_216)1 << (30 - 1); [L119] const SORT_218 mask_SORT_218 = (SORT_218)-1 >> (sizeof(SORT_218) * 8 - 31); [L120] const SORT_218 msb_SORT_218 = (SORT_218)1 << (31 - 1); [L122] const SORT_9 var_10 = 4294967295; [L123] const SORT_9 var_13 = 2863311530; [L124] const SORT_1 var_17 = 1; [L126] SORT_1 input_2; [L127] SORT_1 input_3; [L128] SORT_1 input_4; [L129] SORT_5 input_6; [L130] SORT_1 input_7; [L131] SORT_1 input_8; [L133] EXPR __VERIFIER_nondet_uint() & mask_SORT_9 VAL [mask_SORT_161=3, mask_SORT_163=7, mask_SORT_165=15, mask_SORT_167=31, mask_SORT_169=63, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_182=8191, mask_SORT_184=16383, mask_SORT_186=32767, mask_SORT_188=65535, mask_SORT_190=131071, mask_SORT_192=262143, mask_SORT_194=524287, mask_SORT_196=1048575, mask_SORT_198=2097151, mask_SORT_1=1, mask_SORT_200=4194303, mask_SORT_202=8388607, mask_SORT_204=16777215, mask_SORT_206=33554431, mask_SORT_208=67108863, mask_SORT_210=134217727, mask_SORT_212=268435455, mask_SORT_214=536870911, mask_SORT_216=1073741823, mask_SORT_218=2147483647, mask_SORT_5=255, mask_SORT_9=-1, var_10=4294967295, var_13=2863311530, var_17=1] [L133] SORT_9 state_11 = __VERIFIER_nondet_uint() & mask_SORT_9; [L135] SORT_9 init_12_arg_1 = var_10; [L136] state_11 = init_12_arg_1 VAL [mask_SORT_161=3, mask_SORT_163=7, mask_SORT_165=15, mask_SORT_167=31, mask_SORT_169=63, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_182=8191, mask_SORT_184=16383, mask_SORT_186=32767, mask_SORT_188=65535, mask_SORT_190=131071, mask_SORT_192=262143, mask_SORT_194=524287, mask_SORT_196=1048575, mask_SORT_198=2097151, mask_SORT_1=1, mask_SORT_200=4194303, mask_SORT_202=8388607, mask_SORT_204=16777215, mask_SORT_206=33554431, mask_SORT_208=67108863, mask_SORT_210=134217727, mask_SORT_212=268435455, mask_SORT_214=536870911, mask_SORT_216=1073741823, mask_SORT_218=2147483647, mask_SORT_5=255, mask_SORT_9=-1, state_11=4294967295, var_10=4294967295, var_13=2863311530, var_17=1] [L139] input_2 = __VERIFIER_nondet_uchar() [L140] input_3 = __VERIFIER_nondet_uchar() [L141] EXPR input_3 & mask_SORT_1 VAL [mask_SORT_161=3, mask_SORT_163=7, mask_SORT_165=15, mask_SORT_167=31, mask_SORT_169=63, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_182=8191, mask_SORT_184=16383, mask_SORT_186=32767, mask_SORT_188=65535, mask_SORT_190=131071, mask_SORT_192=262143, mask_SORT_194=524287, mask_SORT_196=1048575, mask_SORT_198=2097151, mask_SORT_1=1, mask_SORT_200=4194303, mask_SORT_202=8388607, mask_SORT_204=16777215, mask_SORT_206=33554431, mask_SORT_208=67108863, mask_SORT_210=134217727, mask_SORT_212=268435455, mask_SORT_214=536870911, mask_SORT_216=1073741823, mask_SORT_218=2147483647, mask_SORT_5=255, mask_SORT_9=-1, state_11=4294967295, var_10=4294967295, var_13=2863311530, var_17=1] [L141] input_3 = input_3 & mask_SORT_1 [L142] input_4 = __VERIFIER_nondet_uchar() [L143] EXPR input_4 & mask_SORT_1 VAL [input_3=0, mask_SORT_161=3, mask_SORT_163=7, mask_SORT_165=15, mask_SORT_167=31, mask_SORT_169=63, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_182=8191, mask_SORT_184=16383, mask_SORT_186=32767, mask_SORT_188=65535, mask_SORT_190=131071, mask_SORT_192=262143, mask_SORT_194=524287, mask_SORT_196=1048575, mask_SORT_198=2097151, mask_SORT_1=1, mask_SORT_200=4194303, mask_SORT_202=8388607, mask_SORT_204=16777215, mask_SORT_206=33554431, mask_SORT_208=67108863, mask_SORT_210=134217727, mask_SORT_212=268435455, mask_SORT_214=536870911, mask_SORT_216=1073741823, mask_SORT_218=2147483647, mask_SORT_5=255, mask_SORT_9=-1, state_11=4294967295, var_10=4294967295, var_13=2863311530, var_17=1] [L143] input_4 = input_4 & mask_SORT_1 [L144] input_6 = __VERIFIER_nondet_uchar() [L145] EXPR input_6 & mask_SORT_5 VAL [input_3=0, input_4=0, mask_SORT_161=3, mask_SORT_163=7, mask_SORT_165=15, mask_SORT_167=31, mask_SORT_169=63, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_182=8191, mask_SORT_184=16383, mask_SORT_186=32767, mask_SORT_188=65535, mask_SORT_190=131071, mask_SORT_192=262143, mask_SORT_194=524287, mask_SORT_196=1048575, mask_SORT_198=2097151, mask_SORT_1=1, mask_SORT_200=4194303, mask_SORT_202=8388607, mask_SORT_204=16777215, mask_SORT_206=33554431, mask_SORT_208=67108863, mask_SORT_210=134217727, mask_SORT_212=268435455, mask_SORT_214=536870911, mask_SORT_216=1073741823, mask_SORT_218=2147483647, mask_SORT_5=255, mask_SORT_9=-1, state_11=4294967295, var_10=4294967295, var_13=2863311530, var_17=1] [L145] input_6 = input_6 & mask_SORT_5 [L146] input_7 = __VERIFIER_nondet_uchar() [L147] EXPR input_7 & mask_SORT_1 VAL [input_3=0, input_4=0, input_6=0, mask_SORT_161=3, mask_SORT_163=7, mask_SORT_165=15, mask_SORT_167=31, mask_SORT_169=63, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_182=8191, mask_SORT_184=16383, mask_SORT_186=32767, mask_SORT_188=65535, mask_SORT_190=131071, mask_SORT_192=262143, mask_SORT_194=524287, mask_SORT_196=1048575, mask_SORT_198=2097151, mask_SORT_1=1, mask_SORT_200=4194303, mask_SORT_202=8388607, mask_SORT_204=16777215, mask_SORT_206=33554431, mask_SORT_208=67108863, mask_SORT_210=134217727, mask_SORT_212=268435455, mask_SORT_214=536870911, mask_SORT_216=1073741823, mask_SORT_218=2147483647, mask_SORT_5=255, mask_SORT_9=-1, state_11=4294967295, var_10=4294967295, var_13=2863311530, var_17=1] [L147] input_7 = input_7 & mask_SORT_1 [L148] input_8 = __VERIFIER_nondet_uchar() [L149] EXPR input_8 & mask_SORT_1 VAL [input_3=0, input_4=0, input_6=0, input_7=0, mask_SORT_161=3, mask_SORT_163=7, mask_SORT_165=15, mask_SORT_167=31, mask_SORT_169=63, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_182=8191, mask_SORT_184=16383, mask_SORT_186=32767, mask_SORT_188=65535, mask_SORT_190=131071, mask_SORT_192=262143, mask_SORT_194=524287, mask_SORT_196=1048575, mask_SORT_198=2097151, mask_SORT_1=1, mask_SORT_200=4194303, mask_SORT_202=8388607, mask_SORT_204=16777215, mask_SORT_206=33554431, mask_SORT_208=67108863, mask_SORT_210=134217727, mask_SORT_212=268435455, mask_SORT_214=536870911, mask_SORT_216=1073741823, mask_SORT_218=2147483647, mask_SORT_5=255, mask_SORT_9=-1, state_11=4294967295, var_10=4294967295, var_13=2863311530, var_17=1] [L149] input_8 = input_8 & mask_SORT_1 [L152] SORT_9 var_14_arg_0 = state_11; [L153] SORT_9 var_14_arg_1 = var_13; [L154] SORT_1 var_14 = var_14_arg_0 != var_14_arg_1; [L155] SORT_1 var_18_arg_0 = var_14; [L156] SORT_1 var_18 = ~var_18_arg_0; [L157] SORT_1 var_19_arg_0 = var_17; [L158] SORT_1 var_19_arg_1 = var_18; VAL [input_3=0, input_4=0, input_6=0, input_7=0, input_8=0, mask_SORT_161=3, mask_SORT_163=7, mask_SORT_165=15, mask_SORT_167=31, mask_SORT_169=63, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_182=8191, mask_SORT_184=16383, mask_SORT_186=32767, mask_SORT_188=65535, mask_SORT_190=131071, mask_SORT_192=262143, mask_SORT_194=524287, mask_SORT_196=1048575, mask_SORT_198=2097151, mask_SORT_1=1, mask_SORT_200=4194303, mask_SORT_202=8388607, mask_SORT_204=16777215, mask_SORT_206=33554431, mask_SORT_208=67108863, mask_SORT_210=134217727, mask_SORT_212=268435455, mask_SORT_214=536870911, mask_SORT_216=1073741823, mask_SORT_218=2147483647, mask_SORT_5=255, mask_SORT_9=-1, state_11=4294967295, var_10=4294967295, var_13=2863311530, var_17=1, var_19_arg_0=1, var_19_arg_1=-2] [L159] EXPR var_19_arg_0 & var_19_arg_1 VAL [input_3=0, input_4=0, input_6=0, input_7=0, input_8=0, mask_SORT_161=3, mask_SORT_163=7, mask_SORT_165=15, mask_SORT_167=31, mask_SORT_169=63, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_182=8191, mask_SORT_184=16383, mask_SORT_186=32767, mask_SORT_188=65535, mask_SORT_190=131071, mask_SORT_192=262143, mask_SORT_194=524287, mask_SORT_196=1048575, mask_SORT_198=2097151, mask_SORT_1=1, mask_SORT_200=4194303, mask_SORT_202=8388607, mask_SORT_204=16777215, mask_SORT_206=33554431, mask_SORT_208=67108863, mask_SORT_210=134217727, mask_SORT_212=268435455, mask_SORT_214=536870911, mask_SORT_216=1073741823, mask_SORT_218=2147483647, mask_SORT_5=255, mask_SORT_9=-1, state_11=4294967295, var_10=4294967295, var_13=2863311530, var_17=1] [L159] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L160] EXPR var_19 & mask_SORT_1 VAL [input_3=0, input_4=0, input_6=0, input_7=0, input_8=0, mask_SORT_161=3, mask_SORT_163=7, mask_SORT_165=15, mask_SORT_167=31, mask_SORT_169=63, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_182=8191, mask_SORT_184=16383, mask_SORT_186=32767, mask_SORT_188=65535, mask_SORT_190=131071, mask_SORT_192=262143, mask_SORT_194=524287, mask_SORT_196=1048575, mask_SORT_198=2097151, mask_SORT_1=1, mask_SORT_200=4194303, mask_SORT_202=8388607, mask_SORT_204=16777215, mask_SORT_206=33554431, mask_SORT_208=67108863, mask_SORT_210=134217727, mask_SORT_212=268435455, mask_SORT_214=536870911, mask_SORT_216=1073741823, mask_SORT_218=2147483647, mask_SORT_5=255, mask_SORT_9=-1, state_11=4294967295, var_10=4294967295, var_13=2863311530, var_17=1] [L160] var_19 = var_19 & mask_SORT_1 [L161] SORT_1 bad_20_arg_0 = var_19; [L162] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 830 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3839 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3839 mSDsluCounter, 11508 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7667 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 126 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 3841 mSDtfsCounter, 126 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=833occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 822 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 [2024-10-14 06:20:33,140 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.h_CRC.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 217c4f5eefa3b0856788b7ca9679c9bd3ae2e76dd46c0382e56b3111181a98a9 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 06:20:36,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 06:20:36,158 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-10-14 06:20:36,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 06:20:36,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 06:20:36,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 06:20:36,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 06:20:36,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 06:20:36,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 06:20:36,230 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 06:20:36,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 06:20:36,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 06:20:36,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 06:20:36,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 06:20:36,232 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 06:20:36,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 06:20:36,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 06:20:36,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 06:20:36,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 06:20:36,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 06:20:36,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 06:20:36,236 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 06:20:36,236 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 06:20:36,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 06:20:36,237 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 06:20:36,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 06:20:36,237 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 06:20:36,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 06:20:36,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 06:20:36,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 06:20:36,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 06:20:36,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:20:36,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 06:20:36,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 06:20:36,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 06:20:36,242 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 06:20:36,243 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 06:20:36,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 06:20:36,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 06:20:36,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 06:20:36,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 06:20:36,245 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 06:20:36,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 217c4f5eefa3b0856788b7ca9679c9bd3ae2e76dd46c0382e56b3111181a98a9 [2024-10-14 06:20:36,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 06:20:36,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 06:20:36,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 06:20:36,674 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 06:20:36,677 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 06:20:36,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c [2024-10-14 06:20:38,749 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 06:20:39,025 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 06:20:39,030 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c [2024-10-14 06:20:39,060 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dfad9476/4b1646b18a1e41e4a876fb59eb32050c/FLAG9c6bb2e7d [2024-10-14 06:20:39,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dfad9476/4b1646b18a1e41e4a876fb59eb32050c [2024-10-14 06:20:39,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 06:20:39,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 06:20:39,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 06:20:39,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 06:20:39,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 06:20:39,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699f6c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39, skipping insertion in model container [2024-10-14 06:20:39,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,186 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 06:20:39,381 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.h_CRC.c[1245,1258] [2024-10-14 06:20:39,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:20:39,575 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 06:20:39,586 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.h_CRC.c[1245,1258] [2024-10-14 06:20:39,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:20:39,741 INFO L204 MainTranslator]: Completed translation [2024-10-14 06:20:39,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39 WrapperNode [2024-10-14 06:20:39,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 06:20:39,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 06:20:39,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 06:20:39,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 06:20:39,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,838 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 674 [2024-10-14 06:20:39,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 06:20:39,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 06:20:39,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 06:20:39,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 06:20:39,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,874 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,922 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-10-14 06:20:39,922 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,922 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 06:20:39,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 06:20:39,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 06:20:39,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 06:20:39,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (1/1) ... [2024-10-14 06:20:39,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:20:40,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 06:20:40,024 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) [2024-10-14 06:20:40,032 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 [2024-10-14 06:20:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 06:20:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 06:20:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 06:20:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 06:20:40,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 06:20:40,326 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 06:20:40,328 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 06:20:41,305 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2024-10-14 06:20:41,307 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 06:20:41,386 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 06:20:41,387 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 06:20:41,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:20:41 BoogieIcfgContainer [2024-10-14 06:20:41,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 06:20:41,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 06:20:41,391 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 06:20:41,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 06:20:41,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:20:39" (1/3) ... [2024-10-14 06:20:41,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db8ef9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:20:41, skipping insertion in model container [2024-10-14 06:20:41,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:20:39" (2/3) ... [2024-10-14 06:20:41,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db8ef9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:20:41, skipping insertion in model container [2024-10-14 06:20:41,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:20:41" (3/3) ... [2024-10-14 06:20:41,399 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_CRC.c [2024-10-14 06:20:41,418 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 06:20:41,418 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 06:20:41,478 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 06:20:41,491 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;@29fcdad3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 06:20:41,491 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 06:20:41,496 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) [2024-10-14 06:20:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-14 06:20:41,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:20:41,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-14 06:20:41,505 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:20:41,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:20:41,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1614770, now seen corresponding path program 1 times [2024-10-14 06:20:41,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 06:20:41,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904495195] [2024-10-14 06:20:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:20:41,528 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 [2024-10-14 06:20:41,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 06:20:41,536 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) [2024-10-14 06:20:41,548 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 [2024-10-14 06:20:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:20:41,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 06:20:41,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 06:20:41,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:20:41,964 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 06:20:41,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 06:20:41,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904495195] [2024-10-14 06:20:41,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904495195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:20:41,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:20:41,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 06:20:41,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760255470] [2024-10-14 06:20:41,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:20:41,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 06:20:41,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 06:20:41,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 06:20:41,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:20:42,001 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) [2024-10-14 06:20:42,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:20:42,102 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2024-10-14 06:20:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:20:42,105 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 [2024-10-14 06:20:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:20:42,112 INFO L225 Difference]: With dead ends: 15 [2024-10-14 06:20:42,112 INFO L226 Difference]: Without dead ends: 9 [2024-10-14 06:20:42,115 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 [2024-10-14 06:20:42,121 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:20:42,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:20:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-10-14 06:20:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2024-10-14 06:20:42,150 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) [2024-10-14 06:20:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-10-14 06:20:42,152 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2024-10-14 06:20:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:20:42,153 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-10-14 06:20:42,153 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) [2024-10-14 06:20:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-10-14 06:20:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 06:20:42,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:20:42,154 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-14 06:20:42,159 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 (2)] Ended with exit code 0 [2024-10-14 06:20:42,355 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 [2024-10-14 06:20:42,357 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:20:42,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:20:42,357 INFO L85 PathProgramCache]: Analyzing trace with hash 865745430, now seen corresponding path program 1 times [2024-10-14 06:20:42,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 06:20:42,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407648461] [2024-10-14 06:20:42,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:20:42,359 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 [2024-10-14 06:20:42,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 06:20:42,362 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) [2024-10-14 06:20:42,363 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 [2024-10-14 06:20:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:20:42,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-14 06:20:42,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 06:20:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:20:44,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 06:20:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:20:47,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 06:20:47,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407648461] [2024-10-14 06:20:47,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407648461] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 06:20:47,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 06:20:47,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-14 06:20:47,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521645089] [2024-10-14 06:20:47,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 06:20:47,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 06:20:47,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 06:20:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 06:20:47,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 06:20:47,867 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) [2024-10-14 06:20:55,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-10-14 06:21:06,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-10-14 06:21:10,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-10-14 06:21:11,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:21:11,566 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-10-14 06:21:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 06:21:11,567 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 [2024-10-14 06:21:11,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:21:11,568 INFO L225 Difference]: With dead ends: 17 [2024-10-14 06:21:11,568 INFO L226 Difference]: Without dead ends: 15 [2024-10-14 06:21:11,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=48, Invalid=83, Unknown=1, NotChecked=0, Total=132 [2024-10-14 06:21:11,571 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2024-10-14 06:21:11,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2024-10-14 06:21:11,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-14 06:21:11,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-10-14 06:21:11,598 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) [2024-10-14 06:21:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2024-10-14 06:21:11,599 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2024-10-14 06:21:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:21:11,600 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2024-10-14 06:21:11,600 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) [2024-10-14 06:21:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2024-10-14 06:21:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-14 06:21:11,600 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:21:11,600 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2024-10-14 06:21:11,607 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 [2024-10-14 06:21:11,801 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 [2024-10-14 06:21:11,802 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:21:11,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:21:11,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1748931734, now seen corresponding path program 2 times [2024-10-14 06:21:11,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 06:21:11,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449482125] [2024-10-14 06:21:11,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 06:21:11,804 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 [2024-10-14 06:21:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 06:21:11,810 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) [2024-10-14 06:21:11,811 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 [2024-10-14 06:21:12,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 06:21:12,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 06:21:12,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-10-14 06:21:12,243 INFO L278 TraceCheckSpWp]: Computing forward predicates...