/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.mul1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:38:55,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:38:55,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 19:38:55,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:38:55,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:38:55,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:38:55,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:38:55,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:38:55,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:38:55,250 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:38:55,250 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:38:55,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:38:55,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:38:55,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:38:55,253 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:38:55,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:38:55,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:38:55,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:38:55,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:38:55,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:38:55,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:38:55,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:38:55,254 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:38:55,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:38:55,255 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:38:55,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:38:55,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:38:55,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:38:55,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:38:55,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:38:55,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:38:55,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:38:55,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:38:55,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:38:55,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:38:55,258 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:38:55,258 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:38:55,258 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:38:55,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:38:55,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:38:55,259 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:38:55,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:38:55,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:38:55,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:38:55,541 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:38:55,541 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:38:55,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.mul1.c [2023-12-16 19:38:56,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:38:57,046 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:38:57,047 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.mul1.c [2023-12-16 19:38:57,063 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05c654b8/9199b20d5b42466da7b3cd2ceebefd58/FLAG365409511 [2023-12-16 19:38:57,079 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05c654b8/9199b20d5b42466da7b3cd2ceebefd58 [2023-12-16 19:38:57,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:38:57,083 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:38:57,086 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:38:57,086 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:38:57,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:38:57,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af6cb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57, skipping insertion in model container [2023-12-16 19:38:57,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,127 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:38:57,277 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.mul1.c[1244,1257] [2023-12-16 19:38:57,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:38:57,348 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:38:57,358 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.mul1.c[1244,1257] [2023-12-16 19:38:57,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:38:57,399 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:38:57,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57 WrapperNode [2023-12-16 19:38:57,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:38:57,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:38:57,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:38:57,401 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:38:57,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,472 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 381 [2023-12-16 19:38:57,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:38:57,474 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:38:57,474 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:38:57,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:38:57,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,511 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2023-12-16 19:38:57,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:38:57,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:38:57,552 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:38:57,552 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:38:57,553 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (1/1) ... [2023-12-16 19:38:57,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:38:57,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:38:57,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 19:38:57,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 19:38:57,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:38:57,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:38:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 19:38:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:38:57,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:38:57,733 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:38:57,735 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:38:58,225 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:38:58,247 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:38:58,248 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:38:58,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:38:58 BoogieIcfgContainer [2023-12-16 19:38:58,248 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:38:58,250 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:38:58,250 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:38:58,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:38:58,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:38:57" (1/3) ... [2023-12-16 19:38:58,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b45e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:38:58, skipping insertion in model container [2023-12-16 19:38:58,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:57" (2/3) ... [2023-12-16 19:38:58,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b45e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:38:58, skipping insertion in model container [2023-12-16 19:38:58,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:38:58" (3/3) ... [2023-12-16 19:38:58,261 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul1.c [2023-12-16 19:38:58,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:38:58,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:38:58,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:38:58,334 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@38be63a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:38:58,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:38:58,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 69 states have (on average 1.6666666666666667) internal successors, (115), 70 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:58,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-16 19:38:58,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:58,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:58,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:58,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:58,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1891864105, now seen corresponding path program 1 times [2023-12-16 19:38:58,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:58,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776765111] [2023-12-16 19:38:58,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:58,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:58,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:58,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776765111] [2023-12-16 19:38:58,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776765111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:58,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:58,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:38:58,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225503009] [2023-12-16 19:38:58,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:58,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:38:58,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:58,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:38:58,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:38:58,999 INFO L87 Difference]: Start difference. First operand has 71 states, 69 states have (on average 1.6666666666666667) internal successors, (115), 70 states have internal predecessors, (115), 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 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:59,057 INFO L93 Difference]: Finished difference Result 117 states and 191 transitions. [2023-12-16 19:38:59,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:38:59,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-16 19:38:59,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:59,066 INFO L225 Difference]: With dead ends: 117 [2023-12-16 19:38:59,066 INFO L226 Difference]: Without dead ends: 71 [2023-12-16 19:38:59,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:38:59,071 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 1 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:59,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 319 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:38:59,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-16 19:38:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-12-16 19:38:59,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.6142857142857143) internal successors, (113), 70 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 113 transitions. [2023-12-16 19:38:59,115 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 113 transitions. Word has length 30 [2023-12-16 19:38:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:59,115 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 113 transitions. [2023-12-16 19:38:59,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 113 transitions. [2023-12-16 19:38:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 19:38:59,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:59,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:59,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:38:59,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:59,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:59,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1483479993, now seen corresponding path program 1 times [2023-12-16 19:38:59,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:59,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227800738] [2023-12-16 19:38:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:59,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:59,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:59,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227800738] [2023-12-16 19:38:59,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227800738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:59,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:59,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:38:59,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284255053] [2023-12-16 19:38:59,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:59,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:38:59,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:59,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:38:59,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:38:59,274 INFO L87 Difference]: Start difference. First operand 71 states and 113 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:59,318 INFO L93 Difference]: Finished difference Result 120 states and 189 transitions. [2023-12-16 19:38:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:38:59,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-16 19:38:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:59,321 INFO L225 Difference]: With dead ends: 120 [2023-12-16 19:38:59,321 INFO L226 Difference]: Without dead ends: 74 [2023-12-16 19:38:59,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:38:59,322 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 1 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:59,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 317 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:38:59,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-16 19:38:59,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2023-12-16 19:38:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5972222222222223) internal successors, (115), 72 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:59,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 115 transitions. [2023-12-16 19:38:59,335 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 115 transitions. Word has length 31 [2023-12-16 19:38:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:59,335 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 115 transitions. [2023-12-16 19:38:59,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:59,336 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 115 transitions. [2023-12-16 19:38:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-16 19:38:59,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:59,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:59,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:38:59,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:59,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:59,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1467192783, now seen corresponding path program 1 times [2023-12-16 19:38:59,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:59,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449427957] [2023-12-16 19:38:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:59,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:59,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:59,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449427957] [2023-12-16 19:38:59,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449427957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:59,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:59,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:38:59,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170374453] [2023-12-16 19:38:59,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:59,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:38:59,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:59,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:38:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:38:59,600 INFO L87 Difference]: Start difference. First operand 73 states and 115 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:59,644 INFO L93 Difference]: Finished difference Result 129 states and 203 transitions. [2023-12-16 19:38:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:38:59,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-16 19:38:59,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:59,647 INFO L225 Difference]: With dead ends: 129 [2023-12-16 19:38:59,647 INFO L226 Difference]: Without dead ends: 81 [2023-12-16 19:38:59,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:38:59,652 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 153 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:59,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 226 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:38:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-16 19:38:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2023-12-16 19:38:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.5857142857142856) internal successors, (111), 70 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2023-12-16 19:38:59,671 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 32 [2023-12-16 19:38:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:59,671 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2023-12-16 19:38:59,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:59,671 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2023-12-16 19:38:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-16 19:38:59,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:59,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:59,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:38:59,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:59,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash 307814579, now seen corresponding path program 1 times [2023-12-16 19:38:59,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:59,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951839898] [2023-12-16 19:38:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:59,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 19:38:59,703 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-16 19:38:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 19:38:59,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-16 19:38:59,748 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-16 19:38:59,749 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:38:59,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:38:59,753 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-16 19:38:59,756 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:38:59,804 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-16 19:38:59,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:38:59 BoogieIcfgContainer [2023-12-16 19:38:59,818 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:38:59,818 INFO L158 Benchmark]: Toolchain (without parser) took 2734.94ms. Allocated memory is still 251.7MB. Free memory was 204.0MB in the beginning and 170.3MB in the end (delta: 33.8MB). Peak memory consumption was 34.1MB. Max. memory is 8.0GB. [2023-12-16 19:38:59,818 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory is still 150.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:38:59,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.11ms. Allocated memory is still 251.7MB. Free memory was 203.8MB in the beginning and 188.7MB in the end (delta: 15.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 19:38:59,820 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.26ms. Allocated memory is still 251.7MB. Free memory was 188.7MB in the beginning and 183.5MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 19:38:59,820 INFO L158 Benchmark]: Boogie Preprocessor took 67.31ms. Allocated memory is still 251.7MB. Free memory was 183.5MB in the beginning and 179.7MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 19:38:59,820 INFO L158 Benchmark]: RCFGBuilder took 697.14ms. Allocated memory is still 251.7MB. Free memory was 179.7MB in the beginning and 219.1MB in the end (delta: -39.4MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-16 19:38:59,821 INFO L158 Benchmark]: TraceAbstraction took 1567.50ms. Allocated memory is still 251.7MB. Free memory was 218.1MB in the beginning and 170.3MB in the end (delta: 47.8MB). Peak memory consumption was 48.3MB. Max. memory is 8.0GB. [2023-12-16 19:38:59,824 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory is still 150.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 314.11ms. Allocated memory is still 251.7MB. Free memory was 203.8MB in the beginning and 188.7MB in the end (delta: 15.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 72.26ms. Allocated memory is still 251.7MB. Free memory was 188.7MB in the beginning and 183.5MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.31ms. Allocated memory is still 251.7MB. Free memory was 183.5MB in the beginning and 179.7MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 697.14ms. Allocated memory is still 251.7MB. Free memory was 179.7MB in the beginning and 219.1MB in the end (delta: -39.4MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1567.50ms. Allocated memory is still 251.7MB. Free memory was 218.1MB in the beginning and 170.3MB in the end (delta: 47.8MB). Peak memory consumption was 48.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 91. 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 - 32); [L30] const SORT_5 msb_SORT_5 = (SORT_5)1 << (32 - 1); [L32] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 64); [L33] const SORT_9 msb_SORT_9 = (SORT_9)1 << (64 - 1); [L35] const SORT_9 var_10 = 0; [L36] const SORT_1 var_18 = 1; [L37] const SORT_5 var_22 = 0; [L39] SORT_1 input_2; [L40] SORT_1 input_3; [L41] SORT_1 input_4; [L42] SORT_5 input_6; [L43] SORT_5 input_7; [L44] SORT_1 input_8; [L46] EXPR __VERIFIER_nondet_ulong() & mask_SORT_9 VAL [mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, var_10=0, var_18=1, var_22=0] [L46] SORT_9 state_11 = __VERIFIER_nondet_ulong() & mask_SORT_9; [L47] EXPR __VERIFIER_nondet_ulong() & mask_SORT_9 VAL [mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, var_10=0, var_18=1, var_22=0] [L47] SORT_9 state_13 = __VERIFIER_nondet_ulong() & mask_SORT_9; [L48] EXPR __VERIFIER_nondet_uint() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, var_10=0, var_18=1, var_22=0] [L48] SORT_5 state_23 = __VERIFIER_nondet_uint() & mask_SORT_5; [L49] EXPR __VERIFIER_nondet_uint() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, var_10=0, var_18=1, var_22=0] [L49] SORT_5 state_25 = __VERIFIER_nondet_uint() & mask_SORT_5; [L50] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, var_10=0, var_18=1, var_22=0] [L50] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L51] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, state_27=0, var_10=0, var_18=1, var_22=0] [L51] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] EXPR __VERIFIER_nondet_uint() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, state_27=0, state_29=0, var_10=0, var_18=1, var_22=0] [L52] SORT_5 state_31 = __VERIFIER_nondet_uint() & mask_SORT_5; [L53] EXPR __VERIFIER_nondet_uint() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, var_10=0, var_18=1, var_22=0] [L53] SORT_5 state_33 = __VERIFIER_nondet_uint() & mask_SORT_5; [L55] SORT_9 init_12_arg_1 = var_10; [L56] state_11 = init_12_arg_1 [L57] SORT_9 init_14_arg_1 = var_10; [L58] state_13 = init_14_arg_1 [L59] SORT_5 init_24_arg_1 = var_22; [L60] state_23 = init_24_arg_1 [L61] SORT_5 init_26_arg_1 = var_22; [L62] state_25 = init_26_arg_1 [L63] SORT_1 init_28_arg_1 = var_18; [L64] state_27 = init_28_arg_1 [L65] SORT_1 init_30_arg_1 = var_18; [L66] state_29 = init_30_arg_1 [L67] SORT_5 init_32_arg_1 = var_22; [L68] state_31 = init_32_arg_1 [L69] SORT_5 init_34_arg_1 = var_22; [L70] state_33 = init_34_arg_1 VAL [init_12_arg_1=0, init_14_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=1, init_30_arg_1=1, init_32_arg_1=0, init_34_arg_1=0, mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L73] input_2 = __VERIFIER_nondet_uchar() [L74] input_3 = __VERIFIER_nondet_uchar() [L75] EXPR input_3 & mask_SORT_1 VAL [init_12_arg_1=0, init_14_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=1, init_30_arg_1=1, init_32_arg_1=0, init_34_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L75] input_3 = input_3 & mask_SORT_1 [L76] input_4 = __VERIFIER_nondet_uchar() [L77] EXPR input_4 & mask_SORT_1 VAL [init_12_arg_1=0, init_14_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=1, init_30_arg_1=1, init_32_arg_1=0, init_34_arg_1=0, input_3=0, input_4=0, mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L77] input_4 = input_4 & mask_SORT_1 [L78] input_6 = __VERIFIER_nondet_uint() [L79] input_7 = __VERIFIER_nondet_uint() [L80] input_8 = __VERIFIER_nondet_uchar() [L81] EXPR input_8 & mask_SORT_1 VAL [init_12_arg_1=0, init_14_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=1, init_30_arg_1=1, init_32_arg_1=0, init_34_arg_1=0, input_3=0, input_4=0, input_8=0, mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L81] input_8 = input_8 & mask_SORT_1 [L84] SORT_9 var_15_arg_0 = state_11; [L85] SORT_9 var_15_arg_1 = state_13; [L86] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L87] SORT_1 var_19_arg_0 = var_15; [L88] SORT_1 var_19 = ~var_19_arg_0; [L89] SORT_1 var_20_arg_0 = var_18; [L90] SORT_1 var_20_arg_1 = var_19; VAL [init_12_arg_1=0, init_14_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=1, init_30_arg_1=1, init_32_arg_1=0, init_34_arg_1=0, input_3=0, input_4=0, input_8=0, mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_15=1, var_15_arg_0=0, var_15_arg_1=0, var_18=1, var_19=254, var_19_arg_0=1, var_20_arg_0=1, var_20_arg_1=254, var_22=0] [L91] EXPR var_20_arg_0 & var_20_arg_1 VAL [init_12_arg_1=0, init_14_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=1, init_30_arg_1=1, init_32_arg_1=0, init_34_arg_1=0, input_3=0, input_4=0, input_8=0, mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_15=1, var_15_arg_0=0, var_15_arg_1=0, var_18=1, var_19=254, var_19_arg_0=1, var_20_arg_0=1, var_20_arg_1=254, var_22=0] [L91] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L92] EXPR var_20 & mask_SORT_1 VAL [init_12_arg_1=0, init_14_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=1, init_30_arg_1=1, init_32_arg_1=0, init_34_arg_1=0, input_3=0, input_4=0, input_8=0, mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_15=1, var_15_arg_0=0, var_15_arg_1=0, var_18=1, var_19=254, var_19_arg_0=1, var_20=1, var_20_arg_0=1, var_20_arg_1=254, var_22=0] [L92] var_20 = var_20 & mask_SORT_1 [L93] SORT_1 bad_21_arg_0 = var_20; [L94] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 155 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 155 mSDsluCounter, 862 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 528 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 334 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 179 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 [2023-12-16 19:38:59,841 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...