/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/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 09:57:37,288 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 09:57:37,370 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 09:57:37,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 09:57:37,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 09:57:37,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 09:57:37,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 09:57:37,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 09:57:37,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 09:57:37,413 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 09:57:37,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 09:57:37,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 09:57:37,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 09:57:37,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 09:57:37,416 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 09:57:37,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 09:57:37,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 09:57:37,417 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 09:57:37,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 09:57:37,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 09:57:37,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 09:57:37,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 09:57:37,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 09:57:37,418 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 09:57:37,418 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 09:57:37,418 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 09:57:37,419 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 09:57:37,419 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 09:57:37,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 09:57:37,419 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 09:57:37,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 09:57:37,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 09:57:37,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 09:57:37,421 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 09:57:37,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:57:37,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 09:57:37,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 09:57:37,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 09:57:37,421 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 09:57:37,421 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 09:57:37,422 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 09:57:37,422 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 09:57:37,422 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 09:57:37,422 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 09:57:37,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 09:57:37,423 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 09:57:37,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 09:57:37,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 09:57:37,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 09:57:37,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 09:57:37,620 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 09:57:37,620 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 09:57:37,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2023-12-16 09:57:38,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 09:57:38,964 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 09:57:38,965 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_security.c [2023-12-16 09:57:38,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb17bf22/c909dd6c014f4c4ca1c9a98ae496d016/FLAG41aed8b98 [2023-12-16 09:57:38,983 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb17bf22/c909dd6c014f4c4ca1c9a98ae496d016 [2023-12-16 09:57:38,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 09:57:38,985 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 09:57:38,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 09:57:38,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 09:57:38,992 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 09:57:38,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:57:38" (1/1) ... [2023-12-16 09:57:38,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2817ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:38, skipping insertion in model container [2023-12-16 09:57:38,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:57:38" (1/1) ... [2023-12-16 09:57:39,019 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 09:57:39,180 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_security.c[12744,12757] [2023-12-16 09:57:39,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:57:39,195 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 09:57:39,221 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_security.c[12744,12757] [2023-12-16 09:57:39,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:57:39,233 INFO L206 MainTranslator]: Completed translation [2023-12-16 09:57:39,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39 WrapperNode [2023-12-16 09:57:39,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 09:57:39,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 09:57:39,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 09:57:39,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 09:57:39,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,272 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 268 [2023-12-16 09:57:39,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 09:57:39,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 09:57:39,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 09:57:39,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 09:57:39,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,293 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 09:57:39,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,299 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,318 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,321 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 09:57:39,322 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 09:57:39,322 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 09:57:39,322 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 09:57:39,323 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (1/1) ... [2023-12-16 09:57:39,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:57:39,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 09:57:39,350 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 09:57:39,352 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 09:57:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 09:57:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 09:57:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 09:57:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 09:57:39,426 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 09:57:39,428 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 09:57:39,764 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 09:57:39,795 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 09:57:39,796 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-12-16 09:57:39,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:57:39 BoogieIcfgContainer [2023-12-16 09:57:39,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 09:57:39,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 09:57:39,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 09:57:39,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 09:57:39,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:57:38" (1/3) ... [2023-12-16 09:57:39,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791492b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:57:39, skipping insertion in model container [2023-12-16 09:57:39,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:57:39" (2/3) ... [2023-12-16 09:57:39,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791492b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:57:39, skipping insertion in model container [2023-12-16 09:57:39,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:57:39" (3/3) ... [2023-12-16 09:57:39,803 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2023-12-16 09:57:39,820 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 09:57:39,821 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 09:57:39,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 09:57:39,874 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b15b6a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 09:57:39,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 09:57:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.9594594594594594) internal successors, (145), 75 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:39,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 09:57:39,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:57:39,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:57:39,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:57:39,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:57:39,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2012634000, now seen corresponding path program 1 times [2023-12-16 09:57:39,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:57:39,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319732380] [2023-12-16 09:57:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:57:39,905 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 09:57:39,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:57:39,908 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 09:57:39,910 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 09:57:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:57:39,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 09:57:39,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:57:39,984 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 09:57:39,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:57:39,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:57:39,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319732380] [2023-12-16 09:57:39,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319732380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:57:39,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:57:39,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:57:39,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060877195] [2023-12-16 09:57:39,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:57:39,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 09:57:39,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:57:40,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 09:57:40,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 09:57:40,027 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.9594594594594594) internal successors, (145), 75 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:40,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:57:40,054 INFO L93 Difference]: Finished difference Result 151 states and 289 transitions. [2023-12-16 09:57:40,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 09:57:40,056 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-16 09:57:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:57:40,064 INFO L225 Difference]: With dead ends: 151 [2023-12-16 09:57:40,064 INFO L226 Difference]: Without dead ends: 73 [2023-12-16 09:57:40,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 09:57:40,069 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:57:40,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:57:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-16 09:57:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-12-16 09:57:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5) internal successors, (108), 72 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2023-12-16 09:57:40,100 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 8 [2023-12-16 09:57:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:57:40,100 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2023-12-16 09:57:40,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2023-12-16 09:57:40,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 09:57:40,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:57:40,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:57:40,107 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 (2)] Forceful destruction successful, exit code 0 [2023-12-16 09:57:40,304 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 09:57:40,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:57:40,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:57:40,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1500363544, now seen corresponding path program 1 times [2023-12-16 09:57:40,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:57:40,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156240268] [2023-12-16 09:57:40,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:57:40,307 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 09:57:40,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:57:40,308 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 09:57:40,344 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 09:57:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:57:40,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:57:40,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:57:40,369 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 09:57:40,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:57:40,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:57:40,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156240268] [2023-12-16 09:57:40,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156240268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:57:40,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:57:40,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:57:40,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814475391] [2023-12-16 09:57:40,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:57:40,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:57:40,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:57:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:57:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:57:40,373 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:40,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:57:40,424 INFO L93 Difference]: Finished difference Result 148 states and 219 transitions. [2023-12-16 09:57:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:57:40,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 09:57:40,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:57:40,426 INFO L225 Difference]: With dead ends: 148 [2023-12-16 09:57:40,426 INFO L226 Difference]: Without dead ends: 76 [2023-12-16 09:57:40,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 09:57:40,428 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:57:40,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 187 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:57:40,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-16 09:57:40,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-16 09:57:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.48) internal successors, (111), 75 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 111 transitions. [2023-12-16 09:57:40,438 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 111 transitions. Word has length 9 [2023-12-16 09:57:40,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:57:40,438 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 111 transitions. [2023-12-16 09:57:40,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:40,438 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 111 transitions. [2023-12-16 09:57:40,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 09:57:40,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:57:40,439 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:57:40,443 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 09:57:40,641 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 09:57:40,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:57:40,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:57:40,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1719213453, now seen corresponding path program 1 times [2023-12-16 09:57:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:57:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325085371] [2023-12-16 09:57:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:57:40,644 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 09:57:40,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:57:40,645 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 09:57:40,647 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 09:57:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:57:40,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:57:40,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:57:40,695 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 09:57:40,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:57:40,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:57:40,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325085371] [2023-12-16 09:57:40,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325085371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:57:40,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:57:40,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 09:57:40,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132785001] [2023-12-16 09:57:40,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:57:40,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:57:40,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:57:40,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:57:40,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:57:40,698 INFO L87 Difference]: Start difference. First operand 76 states and 111 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:40,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:57:40,736 INFO L93 Difference]: Finished difference Result 156 states and 228 transitions. [2023-12-16 09:57:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:57:40,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-16 09:57:40,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:57:40,738 INFO L225 Difference]: With dead ends: 156 [2023-12-16 09:57:40,738 INFO L226 Difference]: Without dead ends: 82 [2023-12-16 09:57:40,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 09:57:40,740 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 21 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:57:40,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 171 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:57:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-16 09:57:40,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2023-12-16 09:57:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 79 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2023-12-16 09:57:40,747 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 14 [2023-12-16 09:57:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:57:40,747 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2023-12-16 09:57:40,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2023-12-16 09:57:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-16 09:57:40,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:57:40,749 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:57:40,768 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 09:57:40,951 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 09:57:40,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:57:40,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:57:40,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1245574467, now seen corresponding path program 1 times [2023-12-16 09:57:40,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:57:40,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693737395] [2023-12-16 09:57:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:57:40,953 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 09:57:40,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:57:40,954 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 09:57:40,960 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 09:57:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:57:40,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:57:40,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:57:41,005 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 09:57:41,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:57:41,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:57:41,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693737395] [2023-12-16 09:57:41,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693737395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:57:41,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:57:41,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 09:57:41,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389800321] [2023-12-16 09:57:41,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:57:41,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:57:41,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:57:41,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:57:41,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:57:41,008 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:57:41,054 INFO L93 Difference]: Finished difference Result 106 states and 146 transitions. [2023-12-16 09:57:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:57:41,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-16 09:57:41,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:57:41,056 INFO L225 Difference]: With dead ends: 106 [2023-12-16 09:57:41,056 INFO L226 Difference]: Without dead ends: 98 [2023-12-16 09:57:41,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 09:57:41,058 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 16 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:57:41,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 179 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:57:41,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-16 09:57:41,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2023-12-16 09:57:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 88 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 126 transitions. [2023-12-16 09:57:41,066 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 126 transitions. Word has length 17 [2023-12-16 09:57:41,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:57:41,066 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 126 transitions. [2023-12-16 09:57:41,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,066 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 126 transitions. [2023-12-16 09:57:41,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 09:57:41,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:57:41,067 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:57:41,076 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 09:57:41,269 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 09:57:41,270 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:57:41,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:57:41,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1486950486, now seen corresponding path program 1 times [2023-12-16 09:57:41,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:57:41,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582934973] [2023-12-16 09:57:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:57:41,271 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 09:57:41,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:57:41,272 INFO L229 MonitoredProcess]: Starting monitored process 6 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 09:57:41,276 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 (6)] Waiting until timeout for monitored process [2023-12-16 09:57:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:57:41,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:57:41,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:57:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 09:57:41,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:57:41,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:57:41,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582934973] [2023-12-16 09:57:41,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582934973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:57:41,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:57:41,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 09:57:41,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062640897] [2023-12-16 09:57:41,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:57:41,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:57:41,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:57:41,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:57:41,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:57:41,320 INFO L87 Difference]: Start difference. First operand 89 states and 126 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:57:41,355 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2023-12-16 09:57:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:57:41,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-16 09:57:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:57:41,356 INFO L225 Difference]: With dead ends: 183 [2023-12-16 09:57:41,356 INFO L226 Difference]: Without dead ends: 96 [2023-12-16 09:57:41,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 09:57:41,358 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 28 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:57:41,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 167 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:57:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-16 09:57:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2023-12-16 09:57:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 93 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 131 transitions. [2023-12-16 09:57:41,364 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 131 transitions. Word has length 21 [2023-12-16 09:57:41,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:57:41,365 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 131 transitions. [2023-12-16 09:57:41,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,365 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 131 transitions. [2023-12-16 09:57:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 09:57:41,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:57:41,366 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:57:41,380 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 (6)] Forceful destruction successful, exit code 0 [2023-12-16 09:57:41,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 09:57:41,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:57:41,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:57:41,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1317860685, now seen corresponding path program 1 times [2023-12-16 09:57:41,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:57:41,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720323556] [2023-12-16 09:57:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:57:41,572 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 09:57:41,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:57:41,573 INFO L229 MonitoredProcess]: Starting monitored process 7 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 09:57:41,575 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 (7)] Waiting until timeout for monitored process [2023-12-16 09:57:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:57:41,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:57:41,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:57:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 09:57:41,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:57:41,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:57:41,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720323556] [2023-12-16 09:57:41,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720323556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:57:41,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:57:41,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 09:57:41,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453974509] [2023-12-16 09:57:41,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:57:41,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:57:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:57:41,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:57:41,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:57:41,615 INFO L87 Difference]: Start difference. First operand 94 states and 131 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:57:41,649 INFO L93 Difference]: Finished difference Result 163 states and 228 transitions. [2023-12-16 09:57:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:57:41,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-16 09:57:41,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:57:41,653 INFO L225 Difference]: With dead ends: 163 [2023-12-16 09:57:41,653 INFO L226 Difference]: Without dead ends: 71 [2023-12-16 09:57:41,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 09:57:41,654 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 29 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:57:41,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 123 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:57:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-16 09:57:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2023-12-16 09:57:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 68 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2023-12-16 09:57:41,659 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 22 [2023-12-16 09:57:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:57:41,659 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2023-12-16 09:57:41,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2023-12-16 09:57:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 09:57:41,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:57:41,660 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:57:41,680 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 (7)] Forceful destruction successful, exit code 0 [2023-12-16 09:57:41,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 09:57:41,861 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:57:41,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:57:41,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1295085716, now seen corresponding path program 1 times [2023-12-16 09:57:41,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:57:41,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677500688] [2023-12-16 09:57:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:57:41,872 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 09:57:41,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:57:41,873 INFO L229 MonitoredProcess]: Starting monitored process 8 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 09:57:41,879 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 (8)] Waiting until timeout for monitored process [2023-12-16 09:57:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:57:41,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:57:41,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:57:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 09:57:41,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:57:41,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:57:41,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677500688] [2023-12-16 09:57:41,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677500688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:57:41,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:57:41,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 09:57:41,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796815021] [2023-12-16 09:57:41,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:57:41,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:57:41,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:57:41,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:57:41,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:57:41,924 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:57:41,952 INFO L93 Difference]: Finished difference Result 119 states and 162 transitions. [2023-12-16 09:57:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:57:41,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-16 09:57:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:57:41,954 INFO L225 Difference]: With dead ends: 119 [2023-12-16 09:57:41,954 INFO L226 Difference]: Without dead ends: 68 [2023-12-16 09:57:41,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 09:57:41,955 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 15 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:57:41,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:57:41,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-16 09:57:41,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2023-12-16 09:57:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 65 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2023-12-16 09:57:41,960 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 25 [2023-12-16 09:57:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:57:41,960 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2023-12-16 09:57:41,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2023-12-16 09:57:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 09:57:41,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:57:41,961 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:57:41,967 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 (8)] Forceful destruction successful, exit code 0 [2023-12-16 09:57:42,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 09:57:42,164 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:57:42,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:57:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1640138143, now seen corresponding path program 1 times [2023-12-16 09:57:42,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:57:42,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957324574] [2023-12-16 09:57:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:57:42,165 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 09:57:42,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:57:42,166 INFO L229 MonitoredProcess]: Starting monitored process 9 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 09:57:42,167 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 (9)] Waiting until timeout for monitored process [2023-12-16 09:57:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:57:42,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:57:42,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:57:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 09:57:42,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:57:42,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:57:42,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957324574] [2023-12-16 09:57:42,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957324574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:57:42,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:57:42,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 09:57:42,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592883507] [2023-12-16 09:57:42,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:57:42,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:57:42,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:57:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:57:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:57:42,235 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:57:42,259 INFO L93 Difference]: Finished difference Result 108 states and 140 transitions. [2023-12-16 09:57:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:57:42,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-16 09:57:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:57:42,260 INFO L225 Difference]: With dead ends: 108 [2023-12-16 09:57:42,260 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 09:57:42,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 09:57:42,265 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:57:42,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 101 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:57:42,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 09:57:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 09:57:42,266 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) [2023-12-16 09:57:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 09:57:42,266 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2023-12-16 09:57:42,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:57:42,266 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 09:57:42,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:57:42,266 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 09:57:42,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 09:57:42,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 09:57:42,275 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 09:57:42,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 09:57:42,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 09:57:42,486 INFO L899 garLoopResultBuilder]: For program point L250(lines 250 265) no Hoare annotation was computed. [2023-12-16 09:57:42,486 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 133) no Hoare annotation was computed. [2023-12-16 09:57:42,486 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 63) no Hoare annotation was computed. [2023-12-16 09:57:42,486 INFO L899 garLoopResultBuilder]: For program point L366(lines 366 381) no Hoare annotation was computed. [2023-12-16 09:57:42,486 INFO L899 garLoopResultBuilder]: For program point L234(lines 234 249) no Hoare annotation was computed. [2023-12-16 09:57:42,486 INFO L899 garLoopResultBuilder]: For program point L168(lines 168 179) no Hoare annotation was computed. [2023-12-16 09:57:42,486 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 117) no Hoare annotation was computed. [2023-12-16 09:57:42,486 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2023-12-16 09:57:42,486 INFO L899 garLoopResultBuilder]: For program point L350(lines 350 365) no Hoare annotation was computed. [2023-12-16 09:57:42,486 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 233) no Hoare annotation was computed. [2023-12-16 09:57:42,486 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 284) no Hoare annotation was computed. [2023-12-16 09:57:42,487 INFO L899 garLoopResultBuilder]: For program point L152(lines 152 163) no Hoare annotation was computed. [2023-12-16 09:57:42,487 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 349) no Hoare annotation was computed. [2023-12-16 09:57:42,487 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 279) no Hoare annotation was computed. [2023-12-16 09:57:42,487 INFO L899 garLoopResultBuilder]: For program point L202(lines 202 217) no Hoare annotation was computed. [2023-12-16 09:57:42,487 INFO L899 garLoopResultBuilder]: For program point L136(lines 136 147) no Hoare annotation was computed. [2023-12-16 09:57:42,487 INFO L899 garLoopResultBuilder]: For program point L318(lines 318 333) no Hoare annotation was computed. [2023-12-16 09:57:42,487 INFO L899 garLoopResultBuilder]: For program point L285(lines 285 384) no Hoare annotation was computed. [2023-12-16 09:57:42,487 INFO L899 garLoopResultBuilder]: For program point L252(lines 252 263) no Hoare annotation was computed. [2023-12-16 09:57:42,487 INFO L899 garLoopResultBuilder]: For program point L186(lines 186 201) no Hoare annotation was computed. [2023-12-16 09:57:42,487 INFO L899 garLoopResultBuilder]: For program point L120(lines 120 131) no Hoare annotation was computed. [2023-12-16 09:57:42,487 INFO L899 garLoopResultBuilder]: For program point L368(lines 368 379) no Hoare annotation was computed. [2023-12-16 09:57:42,488 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 317) no Hoare annotation was computed. [2023-12-16 09:57:42,488 INFO L899 garLoopResultBuilder]: For program point L368-2(lines 24 387) no Hoare annotation was computed. [2023-12-16 09:57:42,488 INFO L899 garLoopResultBuilder]: For program point L236(lines 236 247) no Hoare annotation was computed. [2023-12-16 09:57:42,488 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2023-12-16 09:57:42,488 INFO L899 garLoopResultBuilder]: For program point L352(lines 352 363) no Hoare annotation was computed. [2023-12-16 09:57:42,488 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 301) no Hoare annotation was computed. [2023-12-16 09:57:42,488 INFO L899 garLoopResultBuilder]: For program point L220(lines 220 231) no Hoare annotation was computed. [2023-12-16 09:57:42,488 INFO L899 garLoopResultBuilder]: For program point L88(lines 88 90) no Hoare annotation was computed. [2023-12-16 09:57:42,488 INFO L899 garLoopResultBuilder]: For program point L336(lines 336 347) no Hoare annotation was computed. [2023-12-16 09:57:42,488 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 215) no Hoare annotation was computed. [2023-12-16 09:57:42,489 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 74) no Hoare annotation was computed. [2023-12-16 09:57:42,489 INFO L899 garLoopResultBuilder]: For program point L320(lines 320 331) no Hoare annotation was computed. [2023-12-16 09:57:42,489 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 199) no Hoare annotation was computed. [2023-12-16 09:57:42,489 INFO L899 garLoopResultBuilder]: For program point L56(lines 56 58) no Hoare annotation was computed. [2023-12-16 09:57:42,489 INFO L899 garLoopResultBuilder]: For program point L304(lines 304 315) no Hoare annotation was computed. [2023-12-16 09:57:42,489 INFO L899 garLoopResultBuilder]: For program point L172(lines 172 174) no Hoare annotation was computed. [2023-12-16 09:57:42,489 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 299) no Hoare annotation was computed. [2023-12-16 09:57:42,489 INFO L899 garLoopResultBuilder]: For program point L156(lines 156 158) no Hoare annotation was computed. [2023-12-16 09:57:42,489 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 387) the Hoare annotation is: (and (= (_ bv0 32) |ULTIMATE.start_main_~this_state~0#1|) (= |ULTIMATE.start_main_~q~0#1| (_ bv0 32))) [2023-12-16 09:57:42,490 INFO L899 garLoopResultBuilder]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2023-12-16 09:57:42,490 INFO L899 garLoopResultBuilder]: For program point L272(lines 272 274) no Hoare annotation was computed. [2023-12-16 09:57:42,490 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 142) no Hoare annotation was computed. [2023-12-16 09:57:42,490 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 09:57:42,490 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 258) no Hoare annotation was computed. [2023-12-16 09:57:42,490 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2023-12-16 09:57:42,490 INFO L899 garLoopResultBuilder]: For program point L372(lines 372 374) no Hoare annotation was computed. [2023-12-16 09:57:42,490 INFO L899 garLoopResultBuilder]: For program point L240(lines 240 242) no Hoare annotation was computed. [2023-12-16 09:57:42,490 INFO L899 garLoopResultBuilder]: For program point L108(lines 108 110) no Hoare annotation was computed. [2023-12-16 09:57:42,490 INFO L899 garLoopResultBuilder]: For program point L356(lines 356 358) no Hoare annotation was computed. [2023-12-16 09:57:42,490 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 226) no Hoare annotation was computed. [2023-12-16 09:57:42,491 INFO L899 garLoopResultBuilder]: For program point L340(lines 340 342) no Hoare annotation was computed. [2023-12-16 09:57:42,491 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 210) no Hoare annotation was computed. [2023-12-16 09:57:42,491 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 326) no Hoare annotation was computed. [2023-12-16 09:57:42,491 INFO L899 garLoopResultBuilder]: For program point L192(lines 192 194) no Hoare annotation was computed. [2023-12-16 09:57:42,491 INFO L899 garLoopResultBuilder]: For program point L308(lines 308 310) no Hoare annotation was computed. [2023-12-16 09:57:42,491 INFO L899 garLoopResultBuilder]: For program point L292(lines 292 294) no Hoare annotation was computed. [2023-12-16 09:57:42,491 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 48) no Hoare annotation was computed. [2023-12-16 09:57:42,491 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 09:57:42,491 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 45) no Hoare annotation was computed. [2023-12-16 09:57:42,491 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 392) no Hoare annotation was computed. [2023-12-16 09:57:42,491 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2023-12-16 09:57:42,492 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2023-12-16 09:57:42,492 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 97) no Hoare annotation was computed. [2023-12-16 09:57:42,492 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 100) no Hoare annotation was computed. [2023-12-16 09:57:42,492 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 81) no Hoare annotation was computed. [2023-12-16 09:57:42,492 INFO L899 garLoopResultBuilder]: For program point L50(lines 50 65) no Hoare annotation was computed. [2023-12-16 09:57:42,492 INFO L899 garLoopResultBuilder]: For program point L166(lines 166 181) no Hoare annotation was computed. [2023-12-16 09:57:42,492 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 15 392) no Hoare annotation was computed. [2023-12-16 09:57:42,492 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 165) no Hoare annotation was computed. [2023-12-16 09:57:42,492 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 95) no Hoare annotation was computed. [2023-12-16 09:57:42,492 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 281) no Hoare annotation was computed. [2023-12-16 09:57:42,493 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 149) no Hoare annotation was computed. [2023-12-16 09:57:42,493 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 184) no Hoare annotation was computed. [2023-12-16 09:57:42,493 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 79) no Hoare annotation was computed. [2023-12-16 09:57:42,495 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:57:42,497 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 09:57:42,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 09:57:42 BoogieIcfgContainer [2023-12-16 09:57:42,504 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 09:57:42,504 INFO L158 Benchmark]: Toolchain (without parser) took 3518.94ms. Allocated memory is still 297.8MB. Free memory was 256.0MB in the beginning and 232.4MB in the end (delta: 23.6MB). Peak memory consumption was 24.7MB. Max. memory is 8.0GB. [2023-12-16 09:57:42,504 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 09:57:42,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.04ms. Allocated memory is still 297.8MB. Free memory was 255.5MB in the beginning and 242.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 09:57:42,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.50ms. Allocated memory is still 297.8MB. Free memory was 242.4MB in the beginning and 240.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 09:57:42,505 INFO L158 Benchmark]: Boogie Preprocessor took 48.02ms. Allocated memory is still 297.8MB. Free memory was 240.3MB in the beginning and 238.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 09:57:42,505 INFO L158 Benchmark]: RCFGBuilder took 474.53ms. Allocated memory is still 297.8MB. Free memory was 237.7MB in the beginning and 215.6MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-16 09:57:42,505 INFO L158 Benchmark]: TraceAbstraction took 2705.41ms. Allocated memory is still 297.8MB. Free memory was 215.1MB in the beginning and 232.4MB in the end (delta: -17.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 09:57:42,506 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.04ms. Allocated memory is still 297.8MB. Free memory was 255.5MB in the beginning and 242.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.50ms. Allocated memory is still 297.8MB. Free memory was 242.4MB in the beginning and 240.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.02ms. Allocated memory is still 297.8MB. Free memory was 240.3MB in the beginning and 238.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 474.53ms. Allocated memory is still 297.8MB. Free memory was 237.7MB in the beginning and 215.6MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2705.41ms. Allocated memory is still 297.8MB. Free memory was 215.1MB in the beginning and 232.4MB in the end (delta: -17.3MB). 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 - PositiveResult [Line: 391]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 1158 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 390 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 162 IncrementalHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 768 mSDtfsCounter, 162 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 305 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 34/34 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: 24]: Loop Invariant Derived loop invariant: ((0 == this_state) && (q == 0)) RESULT: Ultimate proved your program to be correct! [2023-12-16 09:57:42,518 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...