/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/lcm2_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:08:20,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:08:20,904 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 17:08:20,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:08:20,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:08:20,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:08:20,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:08:20,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:08:20,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:08:20,934 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:08:20,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:08:20,935 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:08:20,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:08:20,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:08:20,936 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:08:20,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:08:20,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:08:20,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:08:20,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:08:20,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:08:20,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:08:20,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:08:20,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:08:20,941 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:08:20,941 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:08:20,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:08:20,941 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:08:20,941 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:08:20,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:08:20,942 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:08:20,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:08:20,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:08:20,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:08:20,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:08:20,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:08:20,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:08:20,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:08:20,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:08:20,943 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:08:20,943 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:08:20,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:08:20,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:08:20,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:08:20,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:08:20,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:08:20,944 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:08:20,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:08:21,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:08:21,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:08:21,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:08:21,120 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:08:21,120 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:08:21,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound20.c [2023-12-16 17:08:22,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:08:22,216 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:08:22,217 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound20.c [2023-12-16 17:08:22,221 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950f86598/a7a40558095d49d898d02c87a4d859ca/FLAG90735dfd6 [2023-12-16 17:08:22,641 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950f86598/a7a40558095d49d898d02c87a4d859ca [2023-12-16 17:08:22,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:08:22,646 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:08:22,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:08:22,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:08:22,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:08:22,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fec3026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22, skipping insertion in model container [2023-12-16 17:08:22,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,673 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:08:22,808 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/lcm2_valuebound20.c[537,550] [2023-12-16 17:08:22,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:08:22,844 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:08:22,853 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/lcm2_valuebound20.c[537,550] [2023-12-16 17:08:22,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:08:22,868 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:08:22,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22 WrapperNode [2023-12-16 17:08:22,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:08:22,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:08:22,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:08:22,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:08:22,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,892 INFO L138 Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2023-12-16 17:08:22,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:08:22,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:08:22,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:08:22,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:08:22,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,902 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,912 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2023-12-16 17:08:22,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,923 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:08:22,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:08:22,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:08:22,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:08:22,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (1/1) ... [2023-12-16 17:08:22,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:08:22,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:08:22,952 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 17:08:22,955 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 17:08:22,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:08:22,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:08:22,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 17:08:22,978 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 17:08:22,978 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 17:08:22,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:08:22,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:08:22,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 17:08:22,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 17:08:23,022 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:08:23,024 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:08:23,170 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:08:23,187 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:08:23,187 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 17:08:23,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:08:23 BoogieIcfgContainer [2023-12-16 17:08:23,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:08:23,189 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:08:23,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:08:23,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:08:23,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:08:22" (1/3) ... [2023-12-16 17:08:23,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f18c002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:08:23, skipping insertion in model container [2023-12-16 17:08:23,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:08:22" (2/3) ... [2023-12-16 17:08:23,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f18c002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:08:23, skipping insertion in model container [2023-12-16 17:08:23,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:08:23" (3/3) ... [2023-12-16 17:08:23,194 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound20.c [2023-12-16 17:08:23,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:08:23,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:08:23,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:08:23,245 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;@7027f1b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:08:23,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:08:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:08:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 17:08:23,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:08:23,253 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:08:23,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:08:23,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:08:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash -928420541, now seen corresponding path program 1 times [2023-12-16 17:08:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:08:23,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902510481] [2023-12-16 17:08:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:08:23,265 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 17:08:23,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:08:23,267 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 17:08:23,273 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 17:08:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:08:23,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 17:08:23,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:08:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 17:08:23,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:08:23,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:08:23,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902510481] [2023-12-16 17:08:23,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902510481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:08:23,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:08:23,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 17:08:23,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969750752] [2023-12-16 17:08:23,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:08:23,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 17:08:23,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:08:23,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 17:08:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 17:08:23,379 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 17:08:23,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:08:23,414 INFO L93 Difference]: Finished difference Result 50 states and 79 transitions. [2023-12-16 17:08:23,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 17:08:23,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2023-12-16 17:08:23,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:08:23,420 INFO L225 Difference]: With dead ends: 50 [2023-12-16 17:08:23,420 INFO L226 Difference]: Without dead ends: 24 [2023-12-16 17:08:23,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 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 17:08:23,425 INFO L413 NwaCegarLoop]: 31 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, 31 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 17:08:23,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:08:23,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-16 17:08:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-16 17:08:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 17:08:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-16 17:08:23,451 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 38 [2023-12-16 17:08:23,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:08:23,451 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-16 17:08:23,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 17:08:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-16 17:08:23,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 17:08:23,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:08:23,453 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:08:23,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 17:08:23,661 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 17:08:23,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:08:23,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:08:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1756515979, now seen corresponding path program 1 times [2023-12-16 17:08:23,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:08:23,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212759917] [2023-12-16 17:08:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:08:23,663 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 17:08:23,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:08:23,664 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 17:08:23,696 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 17:08:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:08:23,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 17:08:23,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:08:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 17:08:24,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:08:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 17:08:24,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:08:24,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212759917] [2023-12-16 17:08:24,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212759917] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:08:24,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 17:08:24,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-16 17:08:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933187949] [2023-12-16 17:08:24,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:08:24,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:08:24,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:08:24,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:08:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:08:24,997 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 17:08:29,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 17:08:33,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 17:08:33,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:08:33,735 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-12-16 17:08:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:08:33,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2023-12-16 17:08:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:08:33,743 INFO L225 Difference]: With dead ends: 35 [2023-12-16 17:08:33,744 INFO L226 Difference]: Without dead ends: 32 [2023-12-16 17:08:33,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:08:33,745 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-16 17:08:33,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 88 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2023-12-16 17:08:33,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-16 17:08:33,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-12-16 17:08:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:08:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-12-16 17:08:33,752 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 38 [2023-12-16 17:08:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:08:33,753 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-12-16 17:08:33,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 17:08:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-12-16 17:08:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 17:08:33,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:08:33,755 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:08:33,762 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 (3)] Ended with exit code 0 [2023-12-16 17:08:33,958 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 17:08:33,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:08:33,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:08:33,959 INFO L85 PathProgramCache]: Analyzing trace with hash 792120606, now seen corresponding path program 1 times [2023-12-16 17:08:33,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:08:33,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874822887] [2023-12-16 17:08:33,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:08:33,959 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 17:08:33,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:08:34,053 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 17:08:34,075 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 17:08:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:08:34,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 17:08:34,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:08:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 17:08:35,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:08:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 17:08:38,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:08:38,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874822887] [2023-12-16 17:08:38,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874822887] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:08:38,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:08:38,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 19 [2023-12-16 17:08:38,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519428728] [2023-12-16 17:08:38,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:08:38,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:08:38,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:08:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:08:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:08:38,597 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 15 states have internal predecessors, (29), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-16 17:08:45,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 17:08:49,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 17:08:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:08:50,334 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2023-12-16 17:08:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 17:08:50,339 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 15 states have internal predecessors, (29), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) Word has length 46 [2023-12-16 17:08:50,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:08:50,341 INFO L225 Difference]: With dead ends: 47 [2023-12-16 17:08:50,341 INFO L226 Difference]: Without dead ends: 43 [2023-12-16 17:08:50,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-12-16 17:08:50,342 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:08:50,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 180 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 289 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2023-12-16 17:08:50,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-16 17:08:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2023-12-16 17:08:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 17:08:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2023-12-16 17:08:50,352 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 46 [2023-12-16 17:08:50,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:08:50,352 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2023-12-16 17:08:50,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 15 states have internal predecessors, (29), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-16 17:08:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2023-12-16 17:08:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 17:08:50,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:08:50,353 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:08:50,363 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 [2023-12-16 17:08:50,561 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 17:08:50,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:08:50,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:08:50,562 INFO L85 PathProgramCache]: Analyzing trace with hash -892449491, now seen corresponding path program 1 times [2023-12-16 17:08:50,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:08:50,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4670197] [2023-12-16 17:08:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:08:50,562 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 17:08:50,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:08:50,582 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 17:08:50,624 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 17:08:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:08:50,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 17:08:50,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:08:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 17:08:52,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:08:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-16 17:08:56,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:08:56,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4670197] [2023-12-16 17:08:56,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4670197] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:08:56,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:08:56,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2023-12-16 17:08:56,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783157219] [2023-12-16 17:08:56,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:08:56,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 17:08:56,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:08:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 17:08:56,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2023-12-16 17:08:56,904 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 22 states, 20 states have (on average 1.85) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-16 17:09:04,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 17:09:08,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 17:09:12,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 17:09:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:09:12,397 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2023-12-16 17:09:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 17:09:12,400 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) Word has length 54 [2023-12-16 17:09:12,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:09:12,400 INFO L225 Difference]: With dead ends: 57 [2023-12-16 17:09:12,401 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 17:09:12,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2023-12-16 17:09:12,402 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:09:12,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 173 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 309 Invalid, 3 Unknown, 0 Unchecked, 14.1s Time] [2023-12-16 17:09:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 17:09:12,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 17:09:12,402 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 17:09:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 17:09:12,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2023-12-16 17:09:12,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:09:12,403 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 17:09:12,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-16 17:09:12,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 17:09:12,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 17:09:12,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:09:12,412 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 17:09:12,605 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 17:09:12,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 17:09:15,810 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 17:09:15,811 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~b~0#1| (_ bv20 32)) (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv20 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32))) [2023-12-16 17:09:15,811 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~b~0#1| (_ bv20 32)) (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv20 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32))) [2023-12-16 17:09:15,811 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (bvule |ULTIMATE.start_main_~a~0#1| (_ bv20 32)) [2023-12-16 17:09:15,811 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~b~0#1| (_ bv20 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv20 32))) [2023-12-16 17:09:15,811 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-12-16 17:09:15,811 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-12-16 17:09:15,811 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2023-12-16 17:09:15,811 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 17:09:15,812 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~b~0#1| (_ bv20 32)) (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv20 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~u~0#1|)) (bvmul (bvmul |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (_ bv2 32)))) [2023-12-16 17:09:15,812 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 37 50) no Hoare annotation was computed. [2023-12-16 17:09:15,812 INFO L899 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2023-12-16 17:09:15,812 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~b~0#1| (_ bv20 32)) (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv20 32))) [2023-12-16 17:09:15,812 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 49) no Hoare annotation was computed. [2023-12-16 17:09:15,812 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 37 50) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~b~0#1| (_ bv20 32)) (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv20 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~u~0#1|)) (bvmul (bvmul |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (_ bv2 32)))) [2023-12-16 17:09:15,812 INFO L895 garLoopResultBuilder]: At program point L37-2(lines 37 50) the Hoare annotation is: (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~u~0#1|)) (bvmul (bvmul |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (_ bv2 32))) [2023-12-16 17:09:15,812 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-12-16 17:09:15,812 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-12-16 17:09:15,812 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2023-12-16 17:09:15,812 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-12-16 17:09:15,812 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-12-16 17:09:15,812 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-12-16 17:09:15,813 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-12-16 17:09:15,813 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-12-16 17:09:15,813 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-12-16 17:09:15,813 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-12-16 17:09:15,815 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-16 17:09:15,817 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:09:15,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:09:15 BoogieIcfgContainer [2023-12-16 17:09:15,832 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:09:15,832 INFO L158 Benchmark]: Toolchain (without parser) took 53186.84ms. Allocated memory is still 350.2MB. Free memory was 312.8MB in the beginning and 228.9MB in the end (delta: 83.9MB). Peak memory consumption was 84.4MB. Max. memory is 8.0GB. [2023-12-16 17:09:15,833 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 186.6MB. Free memory is still 140.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:09:15,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.03ms. Allocated memory is still 350.2MB. Free memory was 312.8MB in the beginning and 301.1MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:09:15,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.51ms. Allocated memory is still 350.2MB. Free memory was 301.1MB in the beginning and 299.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:09:15,850 INFO L158 Benchmark]: Boogie Preprocessor took 31.75ms. Allocated memory is still 350.2MB. Free memory was 299.7MB in the beginning and 297.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:09:15,850 INFO L158 Benchmark]: RCFGBuilder took 262.28ms. Allocated memory is still 350.2MB. Free memory was 297.6MB in the beginning and 284.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 17:09:15,850 INFO L158 Benchmark]: TraceAbstraction took 52643.11ms. Allocated memory is still 350.2MB. Free memory was 283.4MB in the beginning and 228.9MB in the end (delta: 54.5MB). Peak memory consumption was 55.1MB. Max. memory is 8.0GB. [2023-12-16 17:09:15,851 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 186.6MB. Free memory is still 140.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.03ms. Allocated memory is still 350.2MB. Free memory was 312.8MB in the beginning and 301.1MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.51ms. Allocated memory is still 350.2MB. Free memory was 301.1MB in the beginning and 299.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.75ms. Allocated memory is still 350.2MB. Free memory was 299.7MB in the beginning and 297.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 262.28ms. Allocated memory is still 350.2MB. Free memory was 297.6MB in the beginning and 284.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 52643.11ms. Allocated memory is still 350.2MB. Free memory was 283.4MB in the beginning and 228.9MB in the end (delta: 54.5MB). Peak memory consumption was 55.1MB. 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: 14]: 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 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.6s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 33.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 472 SdHoareTripleChecker+Invalid, 32.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 385 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 633 IncrementalHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 87 mSDtfsCounter, 633 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=3, InterpolantAutomatonStates: 44, 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 32 PreInvPairs, 50 NumberOfFragments, 114 HoareAnnotationTreeSize, 32 FormulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FormulaSimplificationsInter, 423 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 1349 SizeOfPredicates, 18 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 373/460 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: 37]: Loop Invariant Derived loop invariant: (((((b <= 20) && (a >= 1)) && (a <= 20)) && (b >= 1)) && ((((y * v) + (x * u)) % 4294967296) == ((b * a) * 2))) RESULT: Ultimate proved your program to be correct! [2023-12-16 17:09:15,882 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...