/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loops/terminator_02-2_abstracted.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:58:43,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:58:43,241 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:58:43,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:58:43,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:58:43,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:58:43,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:58:43,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:58:43,264 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:58:43,264 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:58:43,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:58:43,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:58:43,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:58:43,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:58:43,265 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:58:43,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:58:43,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:58:43,268 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:58:43,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:58:43,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:58:43,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:58:43,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:58:43,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:58:43,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:58:43,270 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:58:43,270 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:58:43,270 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:58:43,270 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:58:43,271 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:58:43,271 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:58:43,271 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:58:43,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:58:43,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:58:43,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:58:43,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:58:43,272 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:58:43,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:58:43,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:58:43,273 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:58:43,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:58:43,273 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:58:43,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:58:43,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:58:43,273 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:58:43,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:58:43,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:58:43,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:58:43,476 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:58:43,478 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:58:43,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2_abstracted.c [2023-12-15 21:58:44,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:58:44,613 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:58:44,614 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2_abstracted.c [2023-12-15 21:58:44,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8fc304de/e236940493734e079025bbcfd11777ed/FLAG582872c56 [2023-12-15 21:58:44,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8fc304de/e236940493734e079025bbcfd11777ed [2023-12-15 21:58:44,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:58:44,635 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:58:44,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:58:44,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:58:44,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:58:44,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3377c14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44, skipping insertion in model container [2023-12-15 21:58:44,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,657 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:58:44,796 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2_abstracted.c[832,845] [2023-12-15 21:58:44,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:58:44,814 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:58:44,822 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2_abstracted.c[832,845] [2023-12-15 21:58:44,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:58:44,834 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:58:44,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44 WrapperNode [2023-12-15 21:58:44,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:58:44,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:58:44,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:58:44,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:58:44,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,844 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,871 INFO L138 Inliner]: procedures = 21, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-12-15 21:58:44,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:58:44,872 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:58:44,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:58:44,872 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:58:44,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,905 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]. [2023-12-15 21:58:44,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,909 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:58:44,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:58:44,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:58:44,911 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:58:44,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (1/1) ... [2023-12-15 21:58:44,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:58:44,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:58:44,934 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) [2023-12-15 21:58:44,957 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 [2023-12-15 21:58:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:58:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:58:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:58:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:58:45,004 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:58:45,006 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:58:45,106 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:58:45,123 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:58:45,124 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 21:58:45,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:58:45 BoogieIcfgContainer [2023-12-15 21:58:45,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:58:45,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:58:45,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:58:45,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:58:45,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:58:44" (1/3) ... [2023-12-15 21:58:45,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8b829f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:58:45, skipping insertion in model container [2023-12-15 21:58:45,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:44" (2/3) ... [2023-12-15 21:58:45,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8b829f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:58:45, skipping insertion in model container [2023-12-15 21:58:45,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:58:45" (3/3) ... [2023-12-15 21:58:45,131 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_02-2_abstracted.c [2023-12-15 21:58:45,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:58:45,143 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:58:45,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:58:45,181 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;@5fa7a76d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:58:45,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:58:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 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) [2023-12-15 21:58:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-15 21:58:45,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:45,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:58:45,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:45,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash -832306124, now seen corresponding path program 1 times [2023-12-15 21:58:45,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:45,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376766635] [2023-12-15 21:58:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:45,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:45,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376766635] [2023-12-15 21:58:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376766635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:58:45,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:58:45,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:58:45,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061715143] [2023-12-15 21:58:45,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:58:45,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:58:45,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:58:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:58:45,397 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 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 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:45,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:45,448 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2023-12-15 21:58:45,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:58:45,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-15 21:58:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:45,454 INFO L225 Difference]: With dead ends: 29 [2023-12-15 21:58:45,454 INFO L226 Difference]: Without dead ends: 16 [2023-12-15 21:58:45,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:58:45,458 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:45,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:58:45,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-15 21:58:45,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-15 21:58:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:45,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-15 21:58:45,477 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 12 [2023-12-15 21:58:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:45,477 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-15 21:58:45,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:45,477 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-15 21:58:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-15 21:58:45,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:45,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:58:45,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 21:58:45,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:45,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash -774988240, now seen corresponding path program 1 times [2023-12-15 21:58:45,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:45,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325026775] [2023-12-15 21:58:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:45,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:45,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:45,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325026775] [2023-12-15 21:58:45,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325026775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:58:45,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:58:45,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:58:45,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492856867] [2023-12-15 21:58:45,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:58:45,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:58:45,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:45,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:58:45,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:58:45,714 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:45,778 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2023-12-15 21:58:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:58:45,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-15 21:58:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:45,779 INFO L225 Difference]: With dead ends: 32 [2023-12-15 21:58:45,779 INFO L226 Difference]: Without dead ends: 21 [2023-12-15 21:58:45,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:58:45,780 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:45,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 31 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:58:45,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-15 21:58:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2023-12-15 21:58:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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) [2023-12-15 21:58:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-12-15 21:58:45,783 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2023-12-15 21:58:45,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:45,783 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-12-15 21:58:45,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:45,783 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-12-15 21:58:45,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-15 21:58:45,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:45,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:58:45,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 21:58:45,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:45,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2053083586, now seen corresponding path program 1 times [2023-12-15 21:58:45,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:45,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207653164] [2023-12-15 21:58:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:45,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:45,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207653164] [2023-12-15 21:58:45,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207653164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:58:45,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:58:45,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:58:45,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358341656] [2023-12-15 21:58:45,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:58:45,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:58:45,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:45,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:58:45,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:58:45,892 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:45,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:45,927 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2023-12-15 21:58:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:58:45,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-15 21:58:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:45,928 INFO L225 Difference]: With dead ends: 21 [2023-12-15 21:58:45,928 INFO L226 Difference]: Without dead ends: 16 [2023-12-15 21:58:45,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:58:45,929 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:45,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 31 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:58:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-15 21:58:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2023-12-15 21:58:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2023-12-15 21:58:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-12-15 21:58:45,932 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2023-12-15 21:58:45,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:45,932 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-12-15 21:58:45,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-12-15 21:58:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-15 21:58:45,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:45,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:58:45,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 21:58:45,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:45,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash 828725943, now seen corresponding path program 1 times [2023-12-15 21:58:45,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:45,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441000011] [2023-12-15 21:58:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:45,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:45,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:45,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441000011] [2023-12-15 21:58:45,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441000011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:58:45,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:58:45,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:58:45,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310615936] [2023-12-15 21:58:45,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:58:45,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:58:45,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:45,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:58:45,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:58:45,963 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:45,980 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2023-12-15 21:58:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:58:45,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-15 21:58:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:45,980 INFO L225 Difference]: With dead ends: 16 [2023-12-15 21:58:45,980 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 21:58:45,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:58:45,982 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:45,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:58:45,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 21:58:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 21:58:45,983 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) [2023-12-15 21:58:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 21:58:45,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2023-12-15 21:58:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:45,983 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 21:58:45,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 21:58:45,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 21:58:45,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:58:45,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 21:58:45,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 21:58:45,989 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 28 47) no Hoare annotation was computed. [2023-12-15 21:58:45,989 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2023-12-15 21:58:45,989 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-12-15 21:58:45,989 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2023-12-15 21:58:45,989 INFO L899 garLoopResultBuilder]: For program point L20-2(lines 19 24) no Hoare annotation was computed. [2023-12-15 21:58:45,989 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2023-12-15 21:58:45,989 INFO L899 garLoopResultBuilder]: For program point L41-3(line 41) no Hoare annotation was computed. [2023-12-15 21:58:45,990 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2023-12-15 21:58:45,990 INFO L899 garLoopResultBuilder]: For program point L41-5(line 41) no Hoare annotation was computed. [2023-12-15 21:58:45,990 INFO L899 garLoopResultBuilder]: For program point L37-2(line 37) no Hoare annotation was computed. [2023-12-15 21:58:45,990 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2023-12-15 21:58:45,990 INFO L899 garLoopResultBuilder]: For program point L37-4(lines 37 40) no Hoare annotation was computed. [2023-12-15 21:58:45,990 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-15 21:58:45,990 INFO L899 garLoopResultBuilder]: For program point L37-6(lines 29 47) no Hoare annotation was computed. [2023-12-15 21:58:45,990 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-12-15 21:58:45,990 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-15 21:58:45,990 INFO L899 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2023-12-15 21:58:45,990 INFO L899 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2023-12-15 21:58:45,994 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-15 21:58:45,995 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:58:46,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:58:46 BoogieIcfgContainer [2023-12-15 21:58:46,000 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:58:46,001 INFO L158 Benchmark]: Toolchain (without parser) took 1365.25ms. Allocated memory is still 283.1MB. Free memory was 230.9MB in the beginning and 195.7MB in the end (delta: 35.2MB). Peak memory consumption was 36.9MB. Max. memory is 8.0GB. [2023-12-15 21:58:46,001 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 212.9MB. Free memory is still 162.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:58:46,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.53ms. Allocated memory is still 283.1MB. Free memory was 230.9MB in the beginning and 220.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 21:58:46,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.07ms. Allocated memory is still 283.1MB. Free memory was 219.7MB in the beginning and 218.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-15 21:58:46,002 INFO L158 Benchmark]: Boogie Preprocessor took 38.85ms. Allocated memory is still 283.1MB. Free memory was 218.2MB in the beginning and 216.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 21:58:46,002 INFO L158 Benchmark]: RCFGBuilder took 213.36ms. Allocated memory is still 283.1MB. Free memory was 216.2MB in the beginning and 204.4MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 21:58:46,002 INFO L158 Benchmark]: TraceAbstraction took 874.08ms. Allocated memory is still 283.1MB. Free memory was 203.6MB in the beginning and 195.7MB in the end (delta: 8.0MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2023-12-15 21:58:46,003 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 212.9MB. Free memory is still 162.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.53ms. Allocated memory is still 283.1MB. Free memory was 230.9MB in the beginning and 220.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.07ms. Allocated memory is still 283.1MB. Free memory was 219.7MB in the beginning and 218.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.85ms. Allocated memory is still 283.1MB. Free memory was 218.2MB in the beginning and 216.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 213.36ms. Allocated memory is still 283.1MB. Free memory was 216.2MB in the beginning and 204.4MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 874.08ms. Allocated memory is still 283.1MB. Free memory was 203.6MB in the beginning and 195.7MB in the end (delta: 8.0MB). Peak memory consumption was 9.7MB. 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: 21]: 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 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 54 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-15 21:58:46,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...