/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-57.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 23:07:44,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 23:07:44,880 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 23:07:44,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 23:07:44,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 23:07:44,904 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 23:07:44,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 23:07:44,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 23:07:44,906 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 23:07:44,908 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 23:07:44,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 23:07:44,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 23:07:44,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 23:07:44,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 23:07:44,910 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 23:07:44,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 23:07:44,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 23:07:44,911 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 23:07:44,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 23:07:44,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 23:07:44,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 23:07:44,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 23:07:44,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 23:07:44,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 23:07:44,912 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 23:07:44,912 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 23:07:44,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 23:07:44,913 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 23:07:44,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 23:07:44,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 23:07:44,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 23:07:44,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 23:07:44,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 23:07:44,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 23:07:44,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 23:07:44,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 23:07:44,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 23:07:44,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 23:07:44,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 23:07:44,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 23:07:44,916 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 23:07:44,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 23:07:44,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 23:07:44,916 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 23:07:45,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 23:07:45,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 23:07:45,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 23:07:45,109 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 23:07:45,109 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 23:07:45,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-57.i [2023-12-20 23:07:46,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 23:07:46,190 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 23:07:46,190 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-57.i [2023-12-20 23:07:46,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05b8d1e9/40a2a7828b334eed8c2006f704282021/FLAG46e10e5c1 [2023-12-20 23:07:46,204 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05b8d1e9/40a2a7828b334eed8c2006f704282021 [2023-12-20 23:07:46,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 23:07:46,207 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 23:07:46,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 23:07:46,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 23:07:46,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 23:07:46,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0e949e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46, skipping insertion in model container [2023-12-20 23:07:46,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,228 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 23:07:46,321 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-57.i[915,928] [2023-12-20 23:07:46,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 23:07:46,357 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 23:07:46,365 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-57.i[915,928] [2023-12-20 23:07:46,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 23:07:46,386 INFO L206 MainTranslator]: Completed translation [2023-12-20 23:07:46,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46 WrapperNode [2023-12-20 23:07:46,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 23:07:46,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 23:07:46,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 23:07:46,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 23:07:46,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,415 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 106 [2023-12-20 23:07:46,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 23:07:46,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 23:07:46,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 23:07:46,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 23:07:46,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,445 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 23:07:46,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 23:07:46,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 23:07:46,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 23:07:46,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 23:07:46,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (1/1) ... [2023-12-20 23:07:46,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 23:07:46,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:07:46,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 23:07:46,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 23:07:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 23:07:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 23:07:46,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 23:07:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 23:07:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 23:07:46,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 23:07:46,599 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 23:07:46,602 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 23:07:46,794 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 23:07:46,812 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 23:07:46,812 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 23:07:46,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:07:46 BoogieIcfgContainer [2023-12-20 23:07:46,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 23:07:46,814 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 23:07:46,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 23:07:46,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 23:07:46,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:07:46" (1/3) ... [2023-12-20 23:07:46,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124af1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:07:46, skipping insertion in model container [2023-12-20 23:07:46,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:07:46" (2/3) ... [2023-12-20 23:07:46,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124af1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:07:46, skipping insertion in model container [2023-12-20 23:07:46,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:07:46" (3/3) ... [2023-12-20 23:07:46,818 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-57.i [2023-12-20 23:07:46,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 23:07:46,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 23:07:46,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 23:07:46,874 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;@1503f80c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 23:07:46,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 23:07:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 29 states have internal predecessors, (41), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-20 23:07:46,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 23:07:46,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:07:46,885 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:07:46,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:07:46,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:07:46,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1333159370, now seen corresponding path program 1 times [2023-12-20 23:07:46,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:07:46,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798816753] [2023-12-20 23:07:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:07:46,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:07:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 23:07:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 23:07:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 23:07:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 23:07:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 23:07:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 23:07:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 23:07:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 23:07:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 23:07:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 23:07:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-20 23:07:47,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:07:47,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798816753] [2023-12-20 23:07:47,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798816753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:07:47,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:07:47,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 23:07:47,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641710454] [2023-12-20 23:07:47,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:07:47,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 23:07:47,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:07:47,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 23:07:47,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 23:07:47,138 INFO L87 Difference]: Start difference. First operand has 41 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 29 states have internal predecessors, (41), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-20 23:07:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:07:47,173 INFO L93 Difference]: Finished difference Result 78 states and 128 transitions. [2023-12-20 23:07:47,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 23:07:47,176 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 68 [2023-12-20 23:07:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:07:47,181 INFO L225 Difference]: With dead ends: 78 [2023-12-20 23:07:47,182 INFO L226 Difference]: Without dead ends: 38 [2023-12-20 23:07:47,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 23:07:47,187 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 23:07:47,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 23:07:47,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-20 23:07:47,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-20 23:07:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-20 23:07:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2023-12-20 23:07:47,228 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 68 [2023-12-20 23:07:47,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:07:47,229 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2023-12-20 23:07:47,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-20 23:07:47,229 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2023-12-20 23:07:47,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 23:07:47,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:07:47,233 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:07:47,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 23:07:47,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:07:47,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:07:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1005735024, now seen corresponding path program 1 times [2023-12-20 23:07:47,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:07:47,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282898651] [2023-12-20 23:07:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:07:47,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:07:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 23:07:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 23:07:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 23:07:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 23:07:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 23:07:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 23:07:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 23:07:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 23:07:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 23:07:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 23:07:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-20 23:07:47,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:07:47,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282898651] [2023-12-20 23:07:47,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282898651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:07:47,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:07:47,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 23:07:47,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332509388] [2023-12-20 23:07:47,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:07:47,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 23:07:47,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:07:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 23:07:47,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 23:07:47,482 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-20 23:07:47,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:07:47,536 INFO L93 Difference]: Finished difference Result 101 states and 141 transitions. [2023-12-20 23:07:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 23:07:47,537 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), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 68 [2023-12-20 23:07:47,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:07:47,538 INFO L225 Difference]: With dead ends: 101 [2023-12-20 23:07:47,538 INFO L226 Difference]: Without dead ends: 64 [2023-12-20 23:07:47,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 23:07:47,540 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 47 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 23:07:47,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 195 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 23:07:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-20 23:07:47,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2023-12-20 23:07:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-20 23:07:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2023-12-20 23:07:47,546 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 68 [2023-12-20 23:07:47,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:07:47,547 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2023-12-20 23:07:47,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-20 23:07:47,547 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2023-12-20 23:07:47,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 23:07:47,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:07:47,548 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:07:47,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 23:07:47,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:07:47,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:07:47,549 INFO L85 PathProgramCache]: Analyzing trace with hash -171424267, now seen corresponding path program 1 times [2023-12-20 23:07:47,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:07:47,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841505145] [2023-12-20 23:07:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:07:47,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:07:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 23:07:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 23:07:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 23:07:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 23:07:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 23:07:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 23:07:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 23:07:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 23:07:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 23:07:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 23:07:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:07:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-20 23:07:47,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:07:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841505145] [2023-12-20 23:07:47,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841505145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:07:47,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:07:47,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 23:07:47,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607575135] [2023-12-20 23:07:47,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:07:47,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 23:07:47,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:07:47,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 23:07:47,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 23:07:47,781 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-20 23:07:47,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:07:47,873 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2023-12-20 23:07:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 23:07:47,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 70 [2023-12-20 23:07:47,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:07:47,874 INFO L225 Difference]: With dead ends: 42 [2023-12-20 23:07:47,874 INFO L226 Difference]: Without dead ends: 0 [2023-12-20 23:07:47,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-20 23:07:47,875 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 28 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 23:07:47,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 174 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 23:07:47,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-20 23:07:47,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-20 23:07:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 23:07:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-20 23:07:47,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2023-12-20 23:07:47,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:07:47,877 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-20 23:07:47,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-20 23:07:47,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-20 23:07:47,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-20 23:07:47,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 23:07:47,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 23:07:47,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-20 23:07:47,900 INFO L899 garLoopResultBuilder]: For program point L35-2(lines 35 37) no Hoare annotation was computed. [2023-12-20 23:07:47,900 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-20 23:07:47,900 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-20 23:07:47,900 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-20 23:07:47,900 INFO L899 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2023-12-20 23:07:47,900 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 52) no Hoare annotation was computed. [2023-12-20 23:07:47,900 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 40 52) no Hoare annotation was computed. [2023-12-20 23:07:47,901 INFO L895 garLoopResultBuilder]: At program point L69(line 69) the Hoare annotation is: (= ~var_1_11~0 ~var_1_10~0) [2023-12-20 23:07:47,901 INFO L895 garLoopResultBuilder]: At program point L69-1(line 69) the Hoare annotation is: (= ~var_1_11~0 ~var_1_10~0) [2023-12-20 23:07:47,901 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-20 23:07:47,901 INFO L899 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2023-12-20 23:07:47,901 INFO L899 garLoopResultBuilder]: For program point L86-1(line 86) no Hoare annotation was computed. [2023-12-20 23:07:47,901 INFO L899 garLoopResultBuilder]: For program point L86-3(line 86) no Hoare annotation was computed. [2023-12-20 23:07:47,901 INFO L899 garLoopResultBuilder]: For program point L86-5(line 86) no Hoare annotation was computed. [2023-12-20 23:07:47,901 INFO L902 garLoopResultBuilder]: At program point L78(line 78) the Hoare annotation is: true [2023-12-20 23:07:47,901 INFO L899 garLoopResultBuilder]: For program point L78-1(line 78) no Hoare annotation was computed. [2023-12-20 23:07:47,901 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2023-12-20 23:07:47,902 INFO L899 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2023-12-20 23:07:47,902 INFO L895 garLoopResultBuilder]: At program point L66(line 66) the Hoare annotation is: (= ~var_1_11~0 ~var_1_10~0) [2023-12-20 23:07:47,902 INFO L895 garLoopResultBuilder]: At program point L66-1(line 66) the Hoare annotation is: (= ~var_1_11~0 ~var_1_10~0) [2023-12-20 23:07:47,902 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-20 23:07:47,903 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 62) no Hoare annotation was computed. [2023-12-20 23:07:47,903 INFO L902 garLoopResultBuilder]: At program point L75(line 75) the Hoare annotation is: true [2023-12-20 23:07:47,903 INFO L902 garLoopResultBuilder]: At program point L75-1(line 75) the Hoare annotation is: true [2023-12-20 23:07:47,903 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2023-12-20 23:07:47,903 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-20 23:07:47,904 INFO L899 garLoopResultBuilder]: For program point L67(line 67) no Hoare annotation was computed. [2023-12-20 23:07:47,904 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 63) no Hoare annotation was computed. [2023-12-20 23:07:47,904 INFO L895 garLoopResultBuilder]: At program point L92-2(lines 92 98) the Hoare annotation is: (= ~var_1_11~0 ~var_1_10~0) [2023-12-20 23:07:47,904 INFO L899 garLoopResultBuilder]: For program point L92-3(lines 92 98) no Hoare annotation was computed. [2023-12-20 23:07:47,904 INFO L899 garLoopResultBuilder]: For program point L55(lines 55 59) no Hoare annotation was computed. [2023-12-20 23:07:47,907 INFO L902 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: true [2023-12-20 23:07:47,907 INFO L899 garLoopResultBuilder]: For program point L80-1(lines 64 81) no Hoare annotation was computed. [2023-12-20 23:07:47,907 INFO L899 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2023-12-20 23:07:47,907 INFO L895 garLoopResultBuilder]: At program point L72(line 72) the Hoare annotation is: (= ~var_1_11~0 ~var_1_10~0) [2023-12-20 23:07:47,907 INFO L895 garLoopResultBuilder]: At program point L72-1(line 72) the Hoare annotation is: (= ~var_1_11~0 ~var_1_10~0) [2023-12-20 23:07:47,908 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 37) no Hoare annotation was computed. [2023-12-20 23:07:47,908 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-12-20 23:07:47,908 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-20 23:07:47,908 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-12-20 23:07:47,908 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-12-20 23:07:47,910 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-20 23:07:47,911 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 23:07:47,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 11:07:47 BoogieIcfgContainer [2023-12-20 23:07:47,921 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 23:07:47,922 INFO L158 Benchmark]: Toolchain (without parser) took 1715.19ms. Allocated memory was 224.4MB in the beginning and 304.1MB in the end (delta: 79.7MB). Free memory was 185.0MB in the beginning and 196.1MB in the end (delta: -11.0MB). Peak memory consumption was 69.5MB. Max. memory is 8.0GB. [2023-12-20 23:07:47,922 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 224.4MB. Free memory is still 177.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 23:07:47,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.70ms. Allocated memory is still 224.4MB. Free memory was 184.9MB in the beginning and 172.5MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 23:07:47,922 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.18ms. Allocated memory is still 224.4MB. Free memory was 172.5MB in the beginning and 170.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 23:07:47,923 INFO L158 Benchmark]: Boogie Preprocessor took 47.12ms. Allocated memory is still 224.4MB. Free memory was 170.4MB in the beginning and 168.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 23:07:47,923 INFO L158 Benchmark]: RCFGBuilder took 348.92ms. Allocated memory is still 224.4MB. Free memory was 168.3MB in the beginning and 154.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-20 23:07:47,923 INFO L158 Benchmark]: TraceAbstraction took 1107.26ms. Allocated memory was 224.4MB in the beginning and 304.1MB in the end (delta: 79.7MB). Free memory was 153.0MB in the beginning and 196.1MB in the end (delta: -43.1MB). Peak memory consumption was 37.0MB. Max. memory is 8.0GB. [2023-12-20 23:07:47,925 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 224.4MB. Free memory is still 177.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.70ms. Allocated memory is still 224.4MB. Free memory was 184.9MB in the beginning and 172.5MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.18ms. Allocated memory is still 224.4MB. Free memory was 172.5MB in the beginning and 170.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.12ms. Allocated memory is still 224.4MB. Free memory was 170.4MB in the beginning and 168.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 348.92ms. Allocated memory is still 224.4MB. Free memory was 168.3MB in the beginning and 154.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1107.26ms. Allocated memory was 224.4MB in the beginning and 304.1MB in the end (delta: 79.7MB). Free memory was 153.0MB in the beginning and 196.1MB in the end (delta: -43.1MB). Peak memory consumption was 37.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 418 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 248 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 170 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 26 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 41 PreInvPairs, 52 NumberOfFragments, 26 HoareAnnotationTreeSize, 41 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 203 ConstructedInterpolants, 0 QuantifiedInterpolants, 221 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 540/540 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 92]: Loop Invariant Derived loop invariant: (var_1_11 == var_1_10) RESULT: Ultimate proved your program to be correct! [2023-12-20 23:07:47,947 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...