/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/hardness-nfm22/hardness_operatoramount_amount10_file-64.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:06:59,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:06:59,316 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 21:06:59,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:06:59,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:06:59,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:06:59,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:06:59,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:06:59,345 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:06:59,348 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:06:59,349 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:06:59,349 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:06:59,349 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:06:59,350 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:06:59,350 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:06:59,350 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:06:59,350 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:06:59,351 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:06:59,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:06:59,352 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:06:59,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:06:59,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:06:59,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:06:59,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:06:59,353 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:06:59,353 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:06:59,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:06:59,353 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:06:59,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:06:59,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:06:59,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:06:59,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:06:59,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:06:59,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:06:59,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:06:59,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:06:59,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:06:59,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:06:59,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:06:59,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:06:59,355 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:06:59,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:06:59,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:06:59,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:06:59,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:06:59,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:06:59,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:06:59,595 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:06:59,596 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:06:59,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-64.i [2023-12-15 21:07:00,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:07:00,810 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:07:00,810 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-64.i [2023-12-15 21:07:00,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39ca60f55/998ed856970a4510aa71c24f6d978dc6/FLAGbdfc40c79 [2023-12-15 21:07:00,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39ca60f55/998ed856970a4510aa71c24f6d978dc6 [2023-12-15 21:07:00,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:07:00,830 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:07:00,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:07:00,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:07:00,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:07:00,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:07:00" (1/1) ... [2023-12-15 21:07:00,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3309d0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:00, skipping insertion in model container [2023-12-15 21:07:00,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:07:00" (1/1) ... [2023-12-15 21:07:00,855 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:07:00,961 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_operatoramount_amount10_file-64.i[915,928] [2023-12-15 21:07:00,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:07:00,991 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:07:00,999 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_operatoramount_amount10_file-64.i[915,928] [2023-12-15 21:07:01,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:07:01,015 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:07:01,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01 WrapperNode [2023-12-15 21:07:01,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:07:01,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:07:01,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:07:01,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:07:01,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,042 INFO L138 Inliner]: procedures = 26, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 69 [2023-12-15 21:07:01,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:07:01,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:07:01,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:07:01,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:07:01,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,059 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,068 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 21:07:01,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:07:01,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:07:01,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:07:01,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:07:01,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (1/1) ... [2023-12-15 21:07:01,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:07:01,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:07:01,164 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 21:07:01,169 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 21:07:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:07:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:07:01,183 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:07:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:07:01,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:07:01,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:07:01,234 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:07:01,236 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:07:01,391 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:07:01,411 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:07:01,411 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:07:01,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:07:01 BoogieIcfgContainer [2023-12-15 21:07:01,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:07:01,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:07:01,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:07:01,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:07:01,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:07:00" (1/3) ... [2023-12-15 21:07:01,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3516d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:07:01, skipping insertion in model container [2023-12-15 21:07:01,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:01" (2/3) ... [2023-12-15 21:07:01,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3516d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:07:01, skipping insertion in model container [2023-12-15 21:07:01,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:07:01" (3/3) ... [2023-12-15 21:07:01,417 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-64.i [2023-12-15 21:07:01,431 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:07:01,431 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:07:01,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:07:01,472 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;@78fccb39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:07:01,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:07:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-15 21:07:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-15 21:07:01,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:07:01,481 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2023-12-15 21:07:01,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:07:01,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:07:01,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1111118368, now seen corresponding path program 1 times [2023-12-15 21:07:01,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:07:01,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657777674] [2023-12-15 21:07:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:07:01,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:07:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:07:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:01,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 21:07:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 21:07:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 21:07:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:01,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 21:07:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:01,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 21:07:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 21:07:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 21:07:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-15 21:07:01,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:07:01,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657777674] [2023-12-15 21:07:01,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657777674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:07:01,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:07:01,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:07:01,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080561215] [2023-12-15 21:07:01,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:07:01,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:07:01,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:07:01,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:07:01,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:07:01,766 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 21:07:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:07:01,797 INFO L93 Difference]: Finished difference Result 51 states and 84 transitions. [2023-12-15 21:07:01,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:07:01,800 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2023-12-15 21:07:01,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:07:01,804 INFO L225 Difference]: With dead ends: 51 [2023-12-15 21:07:01,804 INFO L226 Difference]: Without dead ends: 25 [2023-12-15 21:07:01,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:07:01,808 INFO L413 NwaCegarLoop]: 31 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, 31 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 [2023-12-15 21:07:01,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:07:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-15 21:07:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-15 21:07:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-15 21:07:01,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-12-15 21:07:01,839 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 50 [2023-12-15 21:07:01,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:07:01,840 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-12-15 21:07:01,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 21:07:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-12-15 21:07:01,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-15 21:07:01,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:07:01,843 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2023-12-15 21:07:01,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 21:07:01,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:07:01,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:07:01,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1495285216, now seen corresponding path program 1 times [2023-12-15 21:07:01,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:07:01,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844184565] [2023-12-15 21:07:01,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:07:01,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:07:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:07:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 21:07:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 21:07:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 21:07:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 21:07:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 21:07:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 21:07:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 21:07:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,153 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-15 21:07:02,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:07:02,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844184565] [2023-12-15 21:07:02,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844184565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:07:02,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:07:02,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:07:02,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334848208] [2023-12-15 21:07:02,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:07:02,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:07:02,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:07:02,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:07:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:07:02,161 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 21:07:02,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:07:02,208 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2023-12-15 21:07:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:07:02,209 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), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 50 [2023-12-15 21:07:02,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:07:02,210 INFO L225 Difference]: With dead ends: 44 [2023-12-15 21:07:02,210 INFO L226 Difference]: Without dead ends: 42 [2023-12-15 21:07:02,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 21:07:02,211 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 22 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:07:02,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 120 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:07:02,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-15 21:07:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-12-15 21:07:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 21:07:02,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2023-12-15 21:07:02,219 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 50 [2023-12-15 21:07:02,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:07:02,220 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2023-12-15 21:07:02,220 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), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 21:07:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2023-12-15 21:07:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 21:07:02,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:07:02,221 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2023-12-15 21:07:02,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 21:07:02,222 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:07:02,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:07:02,222 INFO L85 PathProgramCache]: Analyzing trace with hash -899753172, now seen corresponding path program 1 times [2023-12-15 21:07:02,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:07:02,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132073900] [2023-12-15 21:07:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:07:02,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:07:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:07:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 21:07:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 21:07:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 21:07:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 21:07:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 21:07:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 21:07:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 21:07:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-15 21:07:02,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:07:02,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132073900] [2023-12-15 21:07:02,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132073900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:07:02,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:07:02,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:07:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951962021] [2023-12-15 21:07:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:07:02,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:07:02,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:07:02,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:07:02,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:07:02,459 INFO L87 Difference]: Start difference. First operand 41 states and 55 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 21:07:02,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:07:02,579 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2023-12-15 21:07:02,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:07:02,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 51 [2023-12-15 21:07:02,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:07:02,581 INFO L225 Difference]: With dead ends: 43 [2023-12-15 21:07:02,581 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 21:07:02,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:07:02,586 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:07:02,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 104 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:07:02,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 21:07:02,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 21:07:02,590 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 21:07:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 21:07:02,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2023-12-15 21:07:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:07:02,590 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 21:07:02,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 21:07:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 21:07:02,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 21:07:02,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:07:02,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 21:07:02,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 21:07:02,611 INFO L899 garLoopResultBuilder]: For program point L52(lines 40 53) no Hoare annotation was computed. [2023-12-15 21:07:02,611 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-15 21:07:02,611 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-15 21:07:02,611 INFO L902 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: true [2023-12-15 21:07:02,611 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-15 21:07:02,611 INFO L902 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: true [2023-12-15 21:07:02,611 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 38) no Hoare annotation was computed. [2023-12-15 21:07:02,611 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-15 21:07:02,612 INFO L899 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2023-12-15 21:07:02,613 INFO L902 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: true [2023-12-15 21:07:02,613 INFO L902 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: true [2023-12-15 21:07:02,613 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 35) no Hoare annotation was computed. [2023-12-15 21:07:02,613 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-15 21:07:02,614 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 39) no Hoare annotation was computed. [2023-12-15 21:07:02,614 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-12-15 21:07:02,614 INFO L902 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: true [2023-12-15 21:07:02,614 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-15 21:07:02,614 INFO L902 garLoopResultBuilder]: At program point L42-1(line 42) the Hoare annotation is: true [2023-12-15 21:07:02,614 INFO L902 garLoopResultBuilder]: At program point L63-2(lines 63 69) the Hoare annotation is: true [2023-12-15 21:07:02,614 INFO L899 garLoopResultBuilder]: For program point L63-3(lines 63 69) no Hoare annotation was computed. [2023-12-15 21:07:02,614 INFO L902 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: true [2023-12-15 21:07:02,614 INFO L902 garLoopResultBuilder]: At program point L51-1(line 51) the Hoare annotation is: true [2023-12-15 21:07:02,614 INFO L899 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2023-12-15 21:07:02,615 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-12-15 21:07:02,615 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-15 21:07:02,615 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-12-15 21:07:02,615 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-12-15 21:07:02,620 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-15 21:07:02,622 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:07:02,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:07:02 BoogieIcfgContainer [2023-12-15 21:07:02,631 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:07:02,632 INFO L158 Benchmark]: Toolchain (without parser) took 1802.27ms. Allocated memory is still 347.1MB. Free memory was 304.4MB in the beginning and 173.3MB in the end (delta: 131.1MB). Peak memory consumption was 131.1MB. Max. memory is 8.0GB. [2023-12-15 21:07:02,632 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 210.8MB. Free memory is still 159.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:07:02,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.51ms. Allocated memory is still 347.1MB. Free memory was 304.4MB in the beginning and 293.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 21:07:02,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.02ms. Allocated memory is still 347.1MB. Free memory was 293.4MB in the beginning and 291.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-15 21:07:02,633 INFO L158 Benchmark]: Boogie Preprocessor took 34.41ms. Allocated memory is still 347.1MB. Free memory was 291.8MB in the beginning and 289.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 21:07:02,633 INFO L158 Benchmark]: RCFGBuilder took 333.72ms. Allocated memory is still 347.1MB. Free memory was 289.7MB in the beginning and 277.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 21:07:02,633 INFO L158 Benchmark]: TraceAbstraction took 1218.39ms. Allocated memory is still 347.1MB. Free memory was 276.1MB in the beginning and 173.3MB in the end (delta: 102.8MB). Peak memory consumption was 102.8MB. Max. memory is 8.0GB. [2023-12-15 21:07:02,634 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 210.8MB. Free memory is still 159.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.51ms. Allocated memory is still 347.1MB. Free memory was 304.4MB in the beginning and 293.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.02ms. Allocated memory is still 347.1MB. Free memory was 293.4MB in the beginning and 291.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.41ms. Allocated memory is still 347.1MB. Free memory was 291.8MB in the beginning and 289.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 333.72ms. Allocated memory is still 347.1MB. Free memory was 289.7MB in the beginning and 277.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1218.39ms. Allocated memory is still 347.1MB. Free memory was 276.1MB in the beginning and 173.3MB in the end (delta: 102.8MB). Peak memory consumption was 102.8MB. 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 255 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 150 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 105 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=2, InterpolantAutomatonStates: 15, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 31 PreInvPairs, 48 NumberOfFragments, 10 HoareAnnotationTreeSize, 31 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 336/336 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: 63]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-15 21:07:02,648 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...