/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/nla-digbench-scaling/ps4-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 04:48:53,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 04:48:53,279 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 04:48:53,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 04:48:53,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 04:48:53,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 04:48:53,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 04:48:53,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 04:48:53,318 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 04:48:53,318 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 04:48:53,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 04:48:53,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 04:48:53,319 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 04:48:53,319 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 04:48:53,320 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 04:48:53,320 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 04:48:53,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 04:48:53,320 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 04:48:53,321 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 04:48:53,321 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 04:48:53,321 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 04:48:53,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 04:48:53,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 04:48:53,324 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 04:48:53,330 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 04:48:53,330 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 04:48:53,330 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 04:48:53,330 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 04:48:53,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 04:48:53,330 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 04:48:53,331 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 04:48:53,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 04:48:53,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 04:48:53,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 04:48:53,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 04:48:53,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 04:48:53,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 04:48:53,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 04:48:53,332 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 04:48:53,332 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 04:48:53,332 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 04:48:53,332 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 04:48:53,332 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 04:48:53,332 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 04:48:53,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 04:48:53,333 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 04:48:53,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 04:48:53,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 04:48:53,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 04:48:53,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 04:48:53,496 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 04:48:53,498 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 04:48:53,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_valuebound1.c [2023-12-25 04:48:54,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 04:48:54,628 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 04:48:54,628 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_valuebound1.c [2023-12-25 04:48:54,633 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27b4ebd2/9cc35021ba7e44589962ce92f4219ef8/FLAGa13457c6b [2023-12-25 04:48:54,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27b4ebd2/9cc35021ba7e44589962ce92f4219ef8 [2023-12-25 04:48:54,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 04:48:54,645 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 04:48:54,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 04:48:54,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 04:48:54,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 04:48:54,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c59e63e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54, skipping insertion in model container [2023-12-25 04:48:54,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,664 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 04:48:54,761 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_valuebound1.c[458,471] [2023-12-25 04:48:54,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 04:48:54,779 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 04:48:54,787 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_valuebound1.c[458,471] [2023-12-25 04:48:54,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 04:48:54,800 INFO L206 MainTranslator]: Completed translation [2023-12-25 04:48:54,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54 WrapperNode [2023-12-25 04:48:54,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 04:48:54,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 04:48:54,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 04:48:54,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 04:48:54,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,837 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2023-12-25 04:48:54,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 04:48:54,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 04:48:54,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 04:48:54,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 04:48:54,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,846 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,853 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]. [2023-12-25 04:48:54,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,859 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 04:48:54,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 04:48:54,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 04:48:54,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 04:48:54,871 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (1/1) ... [2023-12-25 04:48:54,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 04:48:54,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 04:48:54,894 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) [2023-12-25 04:48:54,904 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 [2023-12-25 04:48:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 04:48:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 04:48:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 04:48:54,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 04:48:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-25 04:48:54,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-25 04:48:54,958 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 04:48:54,960 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 04:48:55,187 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 04:48:55,220 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 04:48:55,220 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 04:48:55,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 04:48:55 BoogieIcfgContainer [2023-12-25 04:48:55,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 04:48:55,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 04:48:55,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 04:48:55,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 04:48:55,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 04:48:54" (1/3) ... [2023-12-25 04:48:55,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b1520f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 04:48:55, skipping insertion in model container [2023-12-25 04:48:55,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:48:54" (2/3) ... [2023-12-25 04:48:55,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b1520f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 04:48:55, skipping insertion in model container [2023-12-25 04:48:55,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 04:48:55" (3/3) ... [2023-12-25 04:48:55,228 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound1.c [2023-12-25 04:48:55,242 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 04:48:55,243 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 04:48:55,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 04:48:55,291 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;@7ca98922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 04:48:55,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 04:48:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 04:48:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-25 04:48:55,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:48:55,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:48:55,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:48:55,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:48:55,306 INFO L85 PathProgramCache]: Analyzing trace with hash -959206418, now seen corresponding path program 1 times [2023-12-25 04:48:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:48:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569528492] [2023-12-25 04:48:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:48:55,315 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 [2023-12-25 04:48:55,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:48:55,317 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) [2023-12-25 04:48:55,336 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 [2023-12-25 04:48:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:48:55,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 04:48:55,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:48:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:48:55,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 04:48:55,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:48:55,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569528492] [2023-12-25 04:48:55,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569528492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 04:48:55,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 04:48:55,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 04:48:55,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495523982] [2023-12-25 04:48:55,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:48:55,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 04:48:55,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:48:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 04:48:55,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 04:48:55,469 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:48:55,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:48:55,497 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2023-12-25 04:48:55,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 04:48:55,500 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-25 04:48:55,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:48:55,505 INFO L225 Difference]: With dead ends: 30 [2023-12-25 04:48:55,505 INFO L226 Difference]: Without dead ends: 14 [2023-12-25 04:48:55,507 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 [2023-12-25 04:48:55,510 INFO L413 NwaCegarLoop]: 16 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, 16 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 [2023-12-25 04:48:55,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 04:48:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-25 04:48:55,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-25 04:48:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:48:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-12-25 04:48:55,535 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2023-12-25 04:48:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:48:55,535 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-12-25 04:48:55,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:48:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-12-25 04:48:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-25 04:48:55,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:48:55,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:48:55,548 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 [2023-12-25 04:48:55,741 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 [2023-12-25 04:48:55,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:48:55,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:48:55,742 INFO L85 PathProgramCache]: Analyzing trace with hash 817588404, now seen corresponding path program 1 times [2023-12-25 04:48:55,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:48:55,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351892006] [2023-12-25 04:48:55,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:48:55,743 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 [2023-12-25 04:48:55,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:48:55,744 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) [2023-12-25 04:48:55,745 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 [2023-12-25 04:48:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:48:55,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 04:48:55,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:48:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:48:55,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 04:48:55,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:48:55,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351892006] [2023-12-25 04:48:55,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351892006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 04:48:55,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 04:48:55,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 04:48:55,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984264105] [2023-12-25 04:48:55,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:48:55,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 04:48:55,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:48:55,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 04:48:55,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 04:48:55,936 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:48:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:48:56,961 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2023-12-25 04:48:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 04:48:56,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-25 04:48:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:48:56,981 INFO L225 Difference]: With dead ends: 25 [2023-12-25 04:48:56,981 INFO L226 Difference]: Without dead ends: 21 [2023-12-25 04:48:56,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 04:48:56,982 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 04:48:56,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 04:48:56,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-25 04:48:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-25 04:48:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 04:48:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-12-25 04:48:56,988 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2023-12-25 04:48:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:48:56,988 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-12-25 04:48:56,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:48:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-12-25 04:48:56,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-25 04:48:56,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:48:56,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:48:56,998 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 [2023-12-25 04:48:57,194 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 [2023-12-25 04:48:57,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:48:57,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:48:57,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1282095925, now seen corresponding path program 1 times [2023-12-25 04:48:57,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:48:57,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755190741] [2023-12-25 04:48:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:48:57,196 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 [2023-12-25 04:48:57,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:48:57,197 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) [2023-12-25 04:48:57,200 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 [2023-12-25 04:48:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:48:57,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 04:48:57,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:48:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 04:48:57,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:49:09,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 04:49:09,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:49:09,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755190741] [2023-12-25 04:49:09,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755190741] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 04:49:09,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 04:49:09,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-25 04:49:09,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622402027] [2023-12-25 04:49:09,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:49:09,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 04:49:09,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:49:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 04:49:09,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-25 04:49:09,027 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 04:49:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:49:12,175 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-12-25 04:49:12,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 04:49:12,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-25 04:49:12,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:49:12,194 INFO L225 Difference]: With dead ends: 27 [2023-12-25 04:49:12,194 INFO L226 Difference]: Without dead ends: 22 [2023-12-25 04:49:12,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-25 04:49:12,195 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-25 04:49:12,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 36 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-25 04:49:12,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-25 04:49:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-25 04:49:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 04:49:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2023-12-25 04:49:12,202 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2023-12-25 04:49:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:49:12,202 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2023-12-25 04:49:12,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 04:49:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2023-12-25 04:49:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-25 04:49:12,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:49:12,203 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:49:12,219 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 (4)] Forceful destruction successful, exit code 0 [2023-12-25 04:49:12,413 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 [2023-12-25 04:49:12,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:49:12,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:49:12,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1278385288, now seen corresponding path program 1 times [2023-12-25 04:49:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:49:12,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48583667] [2023-12-25 04:49:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:49:12,415 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 [2023-12-25 04:49:12,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:49:12,416 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) [2023-12-25 04:49:12,418 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 [2023-12-25 04:49:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:49:12,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 04:49:12,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:49:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 04:49:13,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:49:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 04:49:22,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:49:22,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48583667] [2023-12-25 04:49:22,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48583667] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 04:49:22,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:49:22,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-25 04:49:22,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585436220] [2023-12-25 04:49:22,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:49:22,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 04:49:22,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:49:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 04:49:22,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-25 04:49:22,773 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 04:49:25,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:49:25,188 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2023-12-25 04:49:25,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 04:49:25,188 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2023-12-25 04:49:25,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:49:25,188 INFO L225 Difference]: With dead ends: 32 [2023-12-25 04:49:25,188 INFO L226 Difference]: Without dead ends: 0 [2023-12-25 04:49:25,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-12-25 04:49:25,189 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 04:49:25,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 64 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 04:49:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-25 04:49:25,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-25 04:49:25,190 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) [2023-12-25 04:49:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-25 04:49:25,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2023-12-25 04:49:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:49:25,191 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-25 04:49:25,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 04:49:25,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-25 04:49:25,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-25 04:49:25,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 04:49:25,205 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 [2023-12-25 04:49:25,393 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 [2023-12-25 04:49:25,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-25 04:49:28,309 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-25 04:49:28,310 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 16) |ULTIMATE.start_main_~k~0#1|))) (let ((.cse1 (bvsle .cse2 (_ bv1 32)))) (or (let ((.cse0 ((_ sign_extend 32) .cse2))) (and (bvslt (_ bv0 64) .cse0) (= (bvmul |ULTIMATE.start_main_~x~0#1| (_ bv4 64)) (_ bv4 64)) .cse1 (= |ULTIMATE.start_main_~y~0#1| (_ bv1 64)) (not (bvslt |ULTIMATE.start_main_~c~0#1| .cse0)))) (and .cse1 (bvsge .cse2 (_ bv0 32)) (= (_ bv0 64) |ULTIMATE.start_main_~x~0#1|) (= (_ bv0 64) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~c~0#1| (_ bv0 64)))))) [2023-12-25 04:49:28,310 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (let ((.cse1 ((_ sign_extend 16) |ULTIMATE.start_main_~k~0#1|))) (let ((.cse0 ((_ sign_extend 32) .cse1))) (and (bvslt (_ bv0 64) .cse0) (= (bvmul |ULTIMATE.start_main_~x~0#1| (_ bv4 64)) (_ bv4 64)) (bvsle .cse1 (_ bv1 32)) (= |ULTIMATE.start_main_~y~0#1| (_ bv1 64)) (not (bvslt |ULTIMATE.start_main_~c~0#1| .cse0))))) (and (= (_ bv0 64) |ULTIMATE.start_main_~x~0#1|) (= (_ bv0 64) |ULTIMATE.start_main_~y~0#1|))) [2023-12-25 04:49:28,310 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-25 04:49:28,310 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-12-25 04:49:28,310 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2023-12-25 04:49:28,310 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 16) |ULTIMATE.start_main_~k~0#1|))) (let ((.cse1 (bvsle .cse2 (_ bv1 32)))) (or (let ((.cse0 ((_ sign_extend 32) .cse2))) (and (bvslt (_ bv0 64) .cse0) (= (bvmul |ULTIMATE.start_main_~x~0#1| (_ bv4 64)) (_ bv4 64)) .cse1 (= |ULTIMATE.start_main_~y~0#1| (_ bv1 64)) (not (bvslt |ULTIMATE.start_main_~c~0#1| .cse0)))) (and .cse1 (bvsge .cse2 (_ bv0 32)) (= (_ bv0 64) |ULTIMATE.start_main_~x~0#1|) (= (_ bv0 64) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~c~0#1| (_ bv0 64)))))) [2023-12-25 04:49:28,310 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2023-12-25 04:49:28,310 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-12-25 04:49:28,311 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (= (let ((.cse0 (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (bvadd (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv2 64))))) (bvneg .cse0) (bvmul |ULTIMATE.start_main_~x~0#1| (_ bv4 64)) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (bvmul |ULTIMATE.start_main_~y~0#1| .cse0))))) (_ bv0 64)) [2023-12-25 04:49:28,311 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-12-25 04:49:28,311 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-12-25 04:49:28,311 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-12-25 04:49:28,311 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-12-25 04:49:28,311 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-12-25 04:49:28,311 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-12-25 04:49:28,313 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-25 04:49:28,314 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 04:49:28,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 04:49:28 BoogieIcfgContainer [2023-12-25 04:49:28,321 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 04:49:28,322 INFO L158 Benchmark]: Toolchain (without parser) took 33676.96ms. Allocated memory was 222.3MB in the beginning and 307.2MB in the end (delta: 84.9MB). Free memory was 157.4MB in the beginning and 197.1MB in the end (delta: -39.7MB). Peak memory consumption was 45.9MB. Max. memory is 8.0GB. [2023-12-25 04:49:28,322 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 222.3MB. Free memory is still 173.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 04:49:28,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.41ms. Allocated memory is still 222.3MB. Free memory was 157.1MB in the beginning and 145.7MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 04:49:28,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.08ms. Allocated memory was 222.3MB in the beginning and 307.2MB in the end (delta: 84.9MB). Free memory was 145.5MB in the beginning and 275.5MB in the end (delta: -129.9MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2023-12-25 04:49:28,323 INFO L158 Benchmark]: Boogie Preprocessor took 31.90ms. Allocated memory is still 307.2MB. Free memory was 275.5MB in the beginning and 273.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 04:49:28,323 INFO L158 Benchmark]: RCFGBuilder took 350.37ms. Allocated memory is still 307.2MB. Free memory was 273.6MB in the beginning and 261.6MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 04:49:28,323 INFO L158 Benchmark]: TraceAbstraction took 33099.29ms. Allocated memory is still 307.2MB. Free memory was 261.1MB in the beginning and 197.1MB in the end (delta: 64.0MB). Peak memory consumption was 63.5MB. Max. memory is 8.0GB. [2023-12-25 04:49:28,326 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 222.3MB. Free memory is still 173.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 155.41ms. Allocated memory is still 222.3MB. Free memory was 157.1MB in the beginning and 145.7MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.08ms. Allocated memory was 222.3MB in the beginning and 307.2MB in the end (delta: 84.9MB). Free memory was 145.5MB in the beginning and 275.5MB in the end (delta: -129.9MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.90ms. Allocated memory is still 307.2MB. Free memory was 275.5MB in the beginning and 273.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 350.37ms. Allocated memory is still 307.2MB. Free memory was 273.6MB in the beginning and 261.6MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 33099.29ms. Allocated memory is still 307.2MB. Free memory was 261.1MB in the beginning and 197.1MB in the end (delta: 64.0MB). Peak memory consumption was 63.5MB. 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: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 33.0s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 154 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 48 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=3, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 15 PreInvPairs, 23 NumberOfFragments, 145 HoareAnnotationTreeSize, 15 FormulaSimplifications, 120 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FormulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 2.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 542 SizeOfPredicates, 5 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 22/30 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: 27]: Loop Invariant Derived loop invariant: ((((((0 < k) && ((x * 4) == 4)) && (k <= 1)) && (y == 1)) && !((c < k))) || (((((k <= 1) && (k >= 0)) && (0 == x)) && (0 == y)) && (c == 0))) RESULT: Ultimate proved your program to be correct! [2023-12-25 04:49:28,367 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...