/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-regression/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:14:52,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:14:52,561 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:14:52,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:14:52,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:14:52,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:14:52,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:14:52,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:14:52,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:14:52,591 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:14:52,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:14:52,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:14:52,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:14:52,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:14:52,594 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:14:52,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:14:52,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:14:52,594 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:14:52,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:14:52,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:14:52,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:14:52,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:14:52,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:14:52,595 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:14:52,595 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:14:52,596 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:14:52,596 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:14:52,596 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:14:52,596 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:14:52,596 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:14:52,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:14:52,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:14:52,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:14:52,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:14:52,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:14:52,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:14:52,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:14:52,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:14:52,597 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:14:52,598 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:14:52,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:14:52,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:14:52,598 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:14:52,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:14:52,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:14:52,598 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:14:52,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:14:52,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:14:52,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:14:52,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:14:52,791 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:14:52,791 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:14:52,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2023-12-16 16:14:53,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:14:54,057 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:14:54,057 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i [2023-12-16 16:14:54,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c8549bb8/cf6566f5a64d431885db1fb29c9dffee/FLAG0cf6cf266 [2023-12-16 16:14:54,075 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c8549bb8/cf6566f5a64d431885db1fb29c9dffee [2023-12-16 16:14:54,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:14:54,078 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:14:54,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:14:54,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:14:54,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:14:54,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72808a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54, skipping insertion in model container [2023-12-16 16:14:54,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,107 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:14:54,323 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i[22285,22298] [2023-12-16 16:14:54,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:14:54,346 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-16 16:14:54,350 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:14:54,363 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i[22285,22298] [2023-12-16 16:14:54,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:14:54,366 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:14:54,407 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i[22285,22298] [2023-12-16 16:14:54,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:14:54,433 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:14:54,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54 WrapperNode [2023-12-16 16:14:54,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:14:54,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:14:54,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:14:54,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:14:54,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,468 INFO L138 Inliner]: procedures = 122, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 36 [2023-12-16 16:14:54,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:14:54,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:14:54,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:14:54,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:14:54,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,482 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,515 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]. [2023-12-16 16:14:54,515 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,515 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,519 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,521 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:14:54,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:14:54,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:14:54,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:14:54,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (1/1) ... [2023-12-16 16:14:54,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:14:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:14:54,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 16:14:54,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 16:14:54,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-16 16:14:54,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:14:54,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 16:14:54,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:14:54,661 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2023-12-16 16:14:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2023-12-16 16:14:54,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:14:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:14:54,737 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:14:54,738 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:14:54,835 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:14:54,870 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:14:54,874 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 16:14:54,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:14:54 BoogieIcfgContainer [2023-12-16 16:14:54,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:14:54,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:14:54,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:14:54,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:14:54,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:14:54" (1/3) ... [2023-12-16 16:14:54,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410db02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:14:54, skipping insertion in model container [2023-12-16 16:14:54,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:14:54" (2/3) ... [2023-12-16 16:14:54,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410db02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:14:54, skipping insertion in model container [2023-12-16 16:14:54,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:14:54" (3/3) ... [2023-12-16 16:14:54,880 INFO L112 eAbstractionObserver]: Analyzing ICFG alt_test.i [2023-12-16 16:14:54,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:14:54,892 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:14:54,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:14:54,930 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;@677483e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:14:54,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:14:54,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 16:14:54,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 16:14:54,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:14:54,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:14:54,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:14:54,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:14:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash -339788470, now seen corresponding path program 1 times [2023-12-16 16:14:54,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:14:54,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314270018] [2023-12-16 16:14:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:14:54,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:14:54,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:14:54,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:14:54,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 16:14:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:14:55,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:14:55,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:14:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:14:55,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:14:55,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:14:55,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314270018] [2023-12-16 16:14:55,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314270018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:14:55,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:14:55,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 16:14:55,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909163966] [2023-12-16 16:14:55,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:14:55,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:14:55,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:14:55,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:14:55,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:14:55,160 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:14:55,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:14:55,186 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2023-12-16 16:14:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:14:55,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-16 16:14:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:14:55,192 INFO L225 Difference]: With dead ends: 30 [2023-12-16 16:14:55,192 INFO L226 Difference]: Without dead ends: 18 [2023-12-16 16:14:55,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:14:55,196 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:14:55,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:14:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-16 16:14:55,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-12-16 16:14:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 16:14:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-12-16 16:14:55,218 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2023-12-16 16:14:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:14:55,218 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-12-16 16:14:55,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:14:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-12-16 16:14:55,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 16:14:55,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:14:55,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:14:55,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 16:14:55,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:14:55,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:14:55,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:14:55,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1435218892, now seen corresponding path program 1 times [2023-12-16 16:14:55,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:14:55,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551555372] [2023-12-16 16:14:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:14:55,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:14:55,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:14:55,427 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:14:55,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 16:14:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:14:55,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 16:14:55,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:14:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:14:55,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:14:55,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:14:55,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551555372] [2023-12-16 16:14:55,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551555372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:14:55,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:14:55,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:14:55,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783313700] [2023-12-16 16:14:55,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:14:55,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:14:55,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:14:55,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:14:55,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:14:55,484 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:14:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:14:55,496 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2023-12-16 16:14:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:14:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-16 16:14:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:14:55,497 INFO L225 Difference]: With dead ends: 25 [2023-12-16 16:14:55,497 INFO L226 Difference]: Without dead ends: 15 [2023-12-16 16:14:55,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:14:55,498 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:14:55,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:14:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-16 16:14:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-16 16:14:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:14:55,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-12-16 16:14:55,504 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2023-12-16 16:14:55,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:14:55,504 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-12-16 16:14:55,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:14:55,505 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-12-16 16:14:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 16:14:55,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:14:55,506 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:14:55,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 16:14:55,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:14:55,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:14:55,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:14:55,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1439110821, now seen corresponding path program 1 times [2023-12-16 16:14:55,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:14:55,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15786114] [2023-12-16 16:14:55,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:14:55,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:14:55,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:14:55,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:14:55,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 16:14:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:14:55,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:14:55,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:14:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:14:55,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:14:55,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:14:55,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15786114] [2023-12-16 16:14:55,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15786114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:14:55,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:14:55,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 16:14:55,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190541514] [2023-12-16 16:14:55,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:14:55,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:14:55,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:14:55,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:14:55,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:14:55,848 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:14:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:14:55,894 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-12-16 16:14:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:14:55,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-12-16 16:14:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:14:55,895 INFO L225 Difference]: With dead ends: 25 [2023-12-16 16:14:55,895 INFO L226 Difference]: Without dead ends: 15 [2023-12-16 16:14:55,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:14:55,897 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:14:55,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:14:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-16 16:14:55,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-16 16:14:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:14:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-12-16 16:14:55,900 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2023-12-16 16:14:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:14:55,900 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-12-16 16:14:55,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:14:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-12-16 16:14:55,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 16:14:55,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:14:55,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:14:55,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 16:14:56,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:14:56,104 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:14:56,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:14:56,105 INFO L85 PathProgramCache]: Analyzing trace with hash 418407634, now seen corresponding path program 1 times [2023-12-16 16:14:56,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:14:56,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913472858] [2023-12-16 16:14:56,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:14:56,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:14:56,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:14:56,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:14:56,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 16:14:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 16:14:56,210 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-16 16:14:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 16:14:56,244 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-12-16 16:14:56,244 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-16 16:14:56,245 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location l_freeErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:14:56,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 16:14:56,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:14:56,452 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-16 16:14:56,455 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:14:56,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:14:56 BoogieIcfgContainer [2023-12-16 16:14:56,476 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:14:56,477 INFO L158 Benchmark]: Toolchain (without parser) took 2398.56ms. Allocated memory is still 252.7MB. Free memory was 202.2MB in the beginning and 191.7MB in the end (delta: 10.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 16:14:56,477 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory was 133.3MB in the beginning and 133.2MB in the end (delta: 76.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:14:56,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.40ms. Allocated memory is still 252.7MB. Free memory was 202.2MB in the beginning and 180.7MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-16 16:14:56,477 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.28ms. Allocated memory is still 252.7MB. Free memory was 180.7MB in the beginning and 179.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:14:56,478 INFO L158 Benchmark]: Boogie Preprocessor took 56.09ms. Allocated memory is still 252.7MB. Free memory was 179.1MB in the beginning and 177.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:14:56,478 INFO L158 Benchmark]: RCFGBuilder took 349.90ms. Allocated memory is still 252.7MB. Free memory was 177.0MB in the beginning and 163.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 16:14:56,478 INFO L158 Benchmark]: TraceAbstraction took 1600.00ms. Allocated memory is still 252.7MB. Free memory was 162.9MB in the beginning and 191.7MB in the end (delta: -28.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:14:56,479 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory was 133.3MB in the beginning and 133.2MB in the end (delta: 76.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 355.40ms. Allocated memory is still 252.7MB. Free memory was 202.2MB in the beginning and 180.7MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.28ms. Allocated memory is still 252.7MB. Free memory was 180.7MB in the beginning and 179.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.09ms. Allocated memory is still 252.7MB. Free memory was 179.1MB in the beginning and 177.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 349.90ms. Allocated memory is still 252.7MB. Free memory was 177.0MB in the beginning and 163.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1600.00ms. Allocated memory is still 252.7MB. Free memory was 162.9MB in the beginning and 191.7MB in the end (delta: -28.8MB). There was no memory consumed. 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 - CounterExampleResult [Line: 516]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L518] int globalState = 0; [L523] CALL, EXPR l_malloc(sizeof(int)) [L529] void *retVal = malloc(size); [L530] COND TRUE retVal != ((void *)0) [L531] globalState=1 VAL [\old(size)=4, globalState=1, retVal={6:0}, size=4] [L532] return retVal; [L523] RET, EXPR l_malloc(sizeof(int)) [L523] int *a = (int*) l_malloc(sizeof(int)); [L524] CALL l_free(a) VAL [\old(globalState)=1, globalState=1] [L535] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=1, globalState=1, ptr={6:0}, ptr={6:0}] [L535] (globalState == 1) ? (0) : __blast_assert () VAL [\old(globalState)=1, globalState=1, ptr={6:0}, ptr={6:0}] [L536] globalState = 0 [L524] RET l_free(a) VAL [\old(argc)=5, a={6:0}, argc=5, argv={9:8}, globalState=0] [L525] CALL l_free(a) VAL [\old(globalState)=0, globalState=0] [L535] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=0, globalState=0, ptr={6:0}, ptr={6:0}] [L535] (globalState == 1) ? (0) : __blast_assert () [L535] CALL __blast_assert () [L516] reach_error() VAL [\old(globalState)=0, globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 26 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=1, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 3 NumberOfNonLiveVariables, 149 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-16 16:14:56,497 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...