/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/loop-lit/mine2017-ex4.10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 23:03:41,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 23:03:41,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 23:03:41,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 23:03:41,201 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 23:03:41,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 23:03:41,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 23:03:41,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 23:03:41,223 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 23:03:41,226 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 23:03:41,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 23:03:41,227 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 23:03:41,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 23:03:41,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 23:03:41,228 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 23:03:41,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 23:03:41,229 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 23:03:41,229 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 23:03:41,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 23:03:41,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 23:03:41,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 23:03:41,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 23:03:41,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 23:03:41,231 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 23:03:41,231 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 23:03:41,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 23:03:41,231 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 23:03:41,231 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 23:03:41,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 23:03:41,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 23:03:41,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 23:03:41,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 23:03:41,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 23:03:41,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 23:03:41,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:03:41,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 23:03:41,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 23:03:41,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 23:03:41,233 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 23:03:41,233 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 23:03:41,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 23:03:41,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 23:03:41,234 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 23:03:41,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 23:03:41,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 23:03:41,234 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 23:03:41,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 23:03:41,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 23:03:41,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 23:03:41,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 23:03:41,431 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 23:03:41,431 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 23:03:41,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/mine2017-ex4.10.i [2023-12-24 23:03:42,446 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 23:03:42,592 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 23:03:42,592 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/mine2017-ex4.10.i [2023-12-24 23:03:42,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54605a795/f6dffc57f38e4d859bab7fb44e8d44aa/FLAG2f7ad2a03 [2023-12-24 23:03:42,610 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54605a795/f6dffc57f38e4d859bab7fb44e8d44aa [2023-12-24 23:03:42,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 23:03:42,612 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 23:03:42,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 23:03:42,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 23:03:42,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 23:03:42,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5b067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42, skipping insertion in model container [2023-12-24 23:03:42,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,633 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 23:03:42,741 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/mine2017-ex4.10.i[813,826] [2023-12-24 23:03:42,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:03:42,754 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 23:03:42,762 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/mine2017-ex4.10.i[813,826] [2023-12-24 23:03:42,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:03:42,773 INFO L206 MainTranslator]: Completed translation [2023-12-24 23:03:42,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42 WrapperNode [2023-12-24 23:03:42,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 23:03:42,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 23:03:42,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 23:03:42,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 23:03:42,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,784 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,793 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-12-24 23:03:42,793 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 23:03:42,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 23:03:42,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 23:03:42,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 23:03:42,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,809 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]. [2023-12-24 23:03:42,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 23:03:42,816 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 23:03:42,816 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 23:03:42,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 23:03:42,817 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (1/1) ... [2023-12-24 23:03:42,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:03:42,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 23:03:42,840 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) [2023-12-24 23:03:42,844 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 [2023-12-24 23:03:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 23:03:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 23:03:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 23:03:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 23:03:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-24 23:03:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-24 23:03:42,905 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 23:03:42,906 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 23:03:42,992 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 23:03:43,026 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 23:03:43,026 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 23:03:43,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:03:43 BoogieIcfgContainer [2023-12-24 23:03:43,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 23:03:43,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 23:03:43,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 23:03:43,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 23:03:43,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 11:03:42" (1/3) ... [2023-12-24 23:03:43,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9f3ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:03:43, skipping insertion in model container [2023-12-24 23:03:43,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:03:42" (2/3) ... [2023-12-24 23:03:43,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9f3ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:03:43, skipping insertion in model container [2023-12-24 23:03:43,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:03:43" (3/3) ... [2023-12-24 23:03:43,034 INFO L112 eAbstractionObserver]: Analyzing ICFG mine2017-ex4.10.i [2023-12-24 23:03:43,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 23:03:43,046 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 23:03:43,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 23:03:43,103 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;@1bd543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 23:03:43,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 23:03:43,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.5) internal successors, (12), 10 states have internal predecessors, (12), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 23:03:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-24 23:03:43,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:03:43,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-24 23:03:43,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:03:43,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:03:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2134519289, now seen corresponding path program 1 times [2023-12-24 23:03:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:03:43,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984330495] [2023-12-24 23:03:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:03:43,133 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 [2023-12-24 23:03:43,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:03:43,149 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) [2023-12-24 23:03:43,163 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 [2023-12-24 23:03:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:03:43,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 23:03:43,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:03:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:03:43,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:03:43,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:03:43,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984330495] [2023-12-24 23:03:43,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984330495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:03:43,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:03:43,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 23:03:43,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232399033] [2023-12-24 23:03:43,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:03:43,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 23:03:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:03:43,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 23:03:43,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 23:03:43,252 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.5) internal successors, (12), 10 states have internal predecessors, (12), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-24 23:03:43,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:03:43,282 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2023-12-24 23:03:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 23:03:43,284 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 6 [2023-12-24 23:03:43,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:03:43,289 INFO L225 Difference]: With dead ends: 29 [2023-12-24 23:03:43,290 INFO L226 Difference]: Without dead ends: 13 [2023-12-24 23:03:43,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 23:03:43,296 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 [2023-12-24 23:03:43,298 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] [2023-12-24 23:03:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-24 23:03:43,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-24 23:03:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 9 states have internal predecessors, (9), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-24 23:03:43,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-12-24 23:03:43,325 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 6 [2023-12-24 23:03:43,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:03:43,325 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-12-24 23:03:43,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-24 23:03:43,325 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2023-12-24 23:03:43,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-24 23:03:43,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:03:43,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-24 23:03:43,332 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 [2023-12-24 23:03:43,529 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 [2023-12-24 23:03:43,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:03:43,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:03:43,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2128054642, now seen corresponding path program 1 times [2023-12-24 23:03:43,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:03:43,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388539996] [2023-12-24 23:03:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:03:43,531 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 [2023-12-24 23:03:43,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:03:43,536 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) [2023-12-24 23:03:43,537 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 [2023-12-24 23:03:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:03:43,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 23:03:43,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:03:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:03:43,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:03:43,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:03:43,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388539996] [2023-12-24 23:03:43,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388539996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:03:43,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:03:43,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 23:03:43,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935876594] [2023-12-24 23:03:43,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:03:43,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:03:43,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:03:43,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:03:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:03:43,585 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-24 23:03:43,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:03:43,596 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2023-12-24 23:03:43,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:03:43,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 6 [2023-12-24 23:03:43,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:03:43,597 INFO L225 Difference]: With dead ends: 24 [2023-12-24 23:03:43,597 INFO L226 Difference]: Without dead ends: 16 [2023-12-24 23:03:43,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:03:43,598 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:03:43,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 25 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:03:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-24 23:03:43,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2023-12-24 23:03:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-24 23:03:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-12-24 23:03:43,605 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2023-12-24 23:03:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:03:43,605 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-12-24 23:03:43,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-24 23:03:43,606 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-12-24 23:03:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-24 23:03:43,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:03:43,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-24 23:03:43,610 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 [2023-12-24 23:03:43,808 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 [2023-12-24 23:03:43,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:03:43,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:03:43,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2129782520, now seen corresponding path program 1 times [2023-12-24 23:03:43,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:03:43,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788253756] [2023-12-24 23:03:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:03:43,810 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 [2023-12-24 23:03:43,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:03:43,811 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) [2023-12-24 23:03:43,845 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 [2023-12-24 23:03:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:03:43,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:03:43,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:03:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:03:43,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:03:43,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:03:43,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788253756] [2023-12-24 23:03:43,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788253756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:03:43,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:03:43,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 23:03:43,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507774164] [2023-12-24 23:03:43,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:03:43,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 23:03:43,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:03:43,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 23:03:43,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 23:03:43,918 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-12-24 23:03:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:03:43,950 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2023-12-24 23:03:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 23:03:43,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2023-12-24 23:03:43,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:03:43,951 INFO L225 Difference]: With dead ends: 22 [2023-12-24 23:03:43,951 INFO L226 Difference]: Without dead ends: 20 [2023-12-24 23:03:43,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:03:43,952 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:03:43,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:03:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-24 23:03:43,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2023-12-24 23:03:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-24 23:03:43,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-12-24 23:03:43,956 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 6 [2023-12-24 23:03:43,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:03:43,957 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-12-24 23:03:43,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-12-24 23:03:43,957 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-12-24 23:03:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-24 23:03:43,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:03:43,957 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:03:43,977 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 [2023-12-24 23:03:44,180 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 [2023-12-24 23:03:44,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:03:44,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:03:44,185 INFO L85 PathProgramCache]: Analyzing trace with hash 747809974, now seen corresponding path program 1 times [2023-12-24 23:03:44,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:03:44,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136253533] [2023-12-24 23:03:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:03:44,185 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 [2023-12-24 23:03:44,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:03:44,189 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) [2023-12-24 23:03:44,190 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 [2023-12-24 23:03:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:03:44,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 23:03:44,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:03:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:03:44,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:03:44,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:03:44,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136253533] [2023-12-24 23:03:44,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136253533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:03:44,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:03:44,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 23:03:44,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453484608] [2023-12-24 23:03:44,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:03:44,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 23:03:44,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:03:44,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 23:03:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:03:44,293 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-24 23:03:44,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:03:44,370 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2023-12-24 23:03:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 23:03:44,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-24 23:03:44,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:03:44,373 INFO L225 Difference]: With dead ends: 36 [2023-12-24 23:03:44,373 INFO L226 Difference]: Without dead ends: 28 [2023-12-24 23:03:44,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 23:03:44,374 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:03:44,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:03:44,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-24 23:03:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-12-24 23:03:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-24 23:03:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-12-24 23:03:44,379 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 12 [2023-12-24 23:03:44,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:03:44,380 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-12-24 23:03:44,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-24 23:03:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-12-24 23:03:44,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-24 23:03:44,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:03:44,380 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-24 23:03:44,385 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 [2023-12-24 23:03:44,584 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 [2023-12-24 23:03:44,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:03:44,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:03:44,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1533884496, now seen corresponding path program 1 times [2023-12-24 23:03:44,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:03:44,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919757290] [2023-12-24 23:03:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:03:44,586 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 [2023-12-24 23:03:44,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:03:44,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:03:44,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 23:03:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:03:44,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 23:03:44,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:03:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 23:03:44,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:03:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 23:03:44,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:03:44,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919757290] [2023-12-24 23:03:44,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919757290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:03:44,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:03:44,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-24 23:03:44,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699388366] [2023-12-24 23:03:44,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:03:44,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:03:44,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:03:44,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:03:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:03:44,817 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-24 23:03:44,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:03:44,970 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2023-12-24 23:03:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 23:03:44,971 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2023-12-24 23:03:44,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:03:44,971 INFO L225 Difference]: With dead ends: 50 [2023-12-24 23:03:44,972 INFO L226 Difference]: Without dead ends: 41 [2023-12-24 23:03:44,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-24 23:03:44,972 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:03:44,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 70 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:03:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-24 23:03:44,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-24 23:03:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-24 23:03:44,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2023-12-24 23:03:44,979 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 24 [2023-12-24 23:03:44,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:03:44,979 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2023-12-24 23:03:44,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-24 23:03:44,980 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2023-12-24 23:03:44,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-24 23:03:44,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:03:44,980 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1] [2023-12-24 23:03:44,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 23:03:45,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:03:45,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:03:45,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:03:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1255944858, now seen corresponding path program 2 times [2023-12-24 23:03:45,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:03:45,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142720514] [2023-12-24 23:03:45,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:03:45,184 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 [2023-12-24 23:03:45,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:03:45,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:03:45,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 23:03:45,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:03:45,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:03:45,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:03:45,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:03:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-24 23:03:45,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:03:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-24 23:03:45,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:03:45,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142720514] [2023-12-24 23:03:45,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142720514] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:03:45,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:03:45,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-24 23:03:45,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739934575] [2023-12-24 23:03:45,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:03:45,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 23:03:45,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:03:45,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 23:03:45,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-24 23:03:45,412 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 12 states have internal predecessors, (24), 8 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-24 23:03:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:03:45,558 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-12-24 23:03:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 23:03:45,558 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 12 states have internal predecessors, (24), 8 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 42 [2023-12-24 23:03:45,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:03:45,559 INFO L225 Difference]: With dead ends: 51 [2023-12-24 23:03:45,559 INFO L226 Difference]: Without dead ends: 47 [2023-12-24 23:03:45,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-12-24 23:03:45,560 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:03:45,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 69 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:03:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-24 23:03:45,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-12-24 23:03:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-24 23:03:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2023-12-24 23:03:45,568 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 42 [2023-12-24 23:03:45,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:03:45,568 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2023-12-24 23:03:45,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 12 states have internal predecessors, (24), 8 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-24 23:03:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2023-12-24 23:03:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-24 23:03:45,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:03:45,570 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2023-12-24 23:03:45,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 23:03:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:03:45,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:03:45,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:03:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1004100564, now seen corresponding path program 1 times [2023-12-24 23:03:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:03:45,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852112456] [2023-12-24 23:03:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:03:45,773 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 [2023-12-24 23:03:45,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:03:45,778 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:03:45,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 23:03:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:03:45,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:03:45,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:03:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 20 proven. 45 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 23:03:45,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:03:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 20 proven. 45 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 23:03:46,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:03:46,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852112456] [2023-12-24 23:03:46,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852112456] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:03:46,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:03:46,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-24 23:03:46,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36255306] [2023-12-24 23:03:46,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:03:46,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 23:03:46,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:03:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 23:03:46,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-12-24 23:03:46,039 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 13 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2023-12-24 23:03:46,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:03:46,267 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2023-12-24 23:03:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 23:03:46,268 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 13 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) Word has length 66 [2023-12-24 23:03:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:03:46,269 INFO L225 Difference]: With dead ends: 80 [2023-12-24 23:03:46,269 INFO L226 Difference]: Without dead ends: 75 [2023-12-24 23:03:46,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-12-24 23:03:46,270 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:03:46,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 166 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:03:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-24 23:03:46,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-24 23:03:46,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 25 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 23:03:46,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2023-12-24 23:03:46,280 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 66 [2023-12-24 23:03:46,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:03:46,280 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2023-12-24 23:03:46,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 13 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2023-12-24 23:03:46,281 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2023-12-24 23:03:46,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 23:03:46,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:03:46,282 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2023-12-24 23:03:46,284 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 (8)] Ended with exit code 0 [2023-12-24 23:03:46,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:03:46,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:03:46,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:03:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1597532458, now seen corresponding path program 2 times [2023-12-24 23:03:46,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:03:46,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946437021] [2023-12-24 23:03:46,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:03:46,485 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 [2023-12-24 23:03:46,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:03:46,486 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 23:03:46,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 23:03:46,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-24 23:03:46,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:03:46,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:03:46,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:03:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2023-12-24 23:03:46,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:03:46,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:03:46,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946437021] [2023-12-24 23:03:46,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946437021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:03:46,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:03:46,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 23:03:46,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439038401] [2023-12-24 23:03:46,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:03:46,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 23:03:46,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:03:46,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 23:03:46,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 23:03:46,593 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-24 23:03:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:03:46,619 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2023-12-24 23:03:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 23:03:46,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 150 [2023-12-24 23:03:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:03:46,620 INFO L225 Difference]: With dead ends: 75 [2023-12-24 23:03:46,620 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 23:03:46,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:03:46,630 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:03:46,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:03:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 23:03:46,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 23:03:46,631 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) [2023-12-24 23:03:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 23:03:46,631 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2023-12-24 23:03:46,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:03:46,632 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 23:03:46,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-24 23:03:46,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 23:03:46,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 23:03:46,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 23:03:46,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 23:03:46,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 23:03:46,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 23:03:47,010 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-24 23:03:47,010 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-12-24 23:03:47,011 INFO L895 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: (bvsle |ULTIMATE.start_main_~v~0#1| (_ bv52 32)) [2023-12-24 23:03:47,011 INFO L895 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (and (bvsle |ULTIMATE.start_main_~v~0#1| (_ bv52 32)) (bvsle (_ bv1 32) |ULTIMATE.start_main_~v~0#1|)) [2023-12-24 23:03:47,011 INFO L895 garLoopResultBuilder]: At program point L19-1(lines 16 20) the Hoare annotation is: (and (bvsle |ULTIMATE.start_main_~v~0#1| (_ bv52 32)) (bvsle (_ bv1 32) |ULTIMATE.start_main_~v~0#1|)) [2023-12-24 23:03:47,011 INFO L895 garLoopResultBuilder]: At program point L17(line 17) the Hoare annotation is: (and (bvsle |ULTIMATE.start_main_~v~0#1| (_ bv52 32)) (bvsle (_ bv1 32) |ULTIMATE.start_main_~v~0#1|) (bvsle (bvadd |ULTIMATE.start_main_~v~0#1| (_ bv2 32)) (_ bv52 32))) [2023-12-24 23:03:47,011 INFO L899 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2023-12-24 23:03:47,013 INFO L895 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (not (bvsle |ULTIMATE.start_main_~v~0#1| (_ bv50 32))) (bvsle |ULTIMATE.start_main_~v~0#1| (_ bv52 32))) [2023-12-24 23:03:47,013 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-24 23:03:47,013 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-12-24 23:03:47,013 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-12-24 23:03:47,013 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2023-12-24 23:03:47,013 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2023-12-24 23:03:47,014 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true [2023-12-24 23:03:47,014 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-12-24 23:03:47,016 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-12-24 23:03:47,018 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 23:03:47,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 11:03:47 BoogieIcfgContainer [2023-12-24 23:03:47,026 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 23:03:47,027 INFO L158 Benchmark]: Toolchain (without parser) took 4414.48ms. Allocated memory is still 242.2MB. Free memory was 189.9MB in the beginning and 132.4MB in the end (delta: 57.5MB). Peak memory consumption was 59.1MB. Max. memory is 8.0GB. [2023-12-24 23:03:47,027 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 201.3MB. Free memory was 170.7MB in the beginning and 170.7MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 23:03:47,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.38ms. Allocated memory is still 242.2MB. Free memory was 189.9MB in the beginning and 178.8MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 23:03:47,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.94ms. Allocated memory is still 242.2MB. Free memory was 178.8MB in the beginning and 177.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 23:03:47,028 INFO L158 Benchmark]: Boogie Preprocessor took 22.12ms. Allocated memory is still 242.2MB. Free memory was 177.3MB in the beginning and 175.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 23:03:47,028 INFO L158 Benchmark]: RCFGBuilder took 210.50ms. Allocated memory is still 242.2MB. Free memory was 175.8MB in the beginning and 165.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-24 23:03:47,028 INFO L158 Benchmark]: TraceAbstraction took 3998.26ms. Allocated memory is still 242.2MB. Free memory was 164.7MB in the beginning and 132.4MB in the end (delta: 32.3MB). Peak memory consumption was 33.9MB. Max. memory is 8.0GB. [2023-12-24 23:03:47,030 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 201.3MB. Free memory was 170.7MB in the beginning and 170.7MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.38ms. Allocated memory is still 242.2MB. Free memory was 189.9MB in the beginning and 178.8MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.94ms. Allocated memory is still 242.2MB. Free memory was 178.8MB in the beginning and 177.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.12ms. Allocated memory is still 242.2MB. Free memory was 177.3MB in the beginning and 175.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 210.50ms. Allocated memory is still 242.2MB. Free memory was 175.8MB in the beginning and 165.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 3998.26ms. Allocated memory is still 242.2MB. Free memory was 164.7MB in the beginning and 132.4MB in the end (delta: 32.3MB). Peak memory consumption was 33.9MB. 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: 13]: 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, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 8, TraceHistogramMax: 25, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 461 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 350 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 498 IncrementalHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 111 mSDtfsCounter, 498 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 447 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=7, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 42 PreInvPairs, 81 NumberOfFragments, 38 HoareAnnotationTreeSize, 42 FormulaSimplifications, 119 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FormulaSimplificationsInter, 435 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 312 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 433 ConstructedInterpolants, 0 QuantifiedInterpolants, 728 SizeOfPredicates, 5 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 2010/2144 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: 16]: Loop Invariant Derived loop invariant: ((v <= 52) && (1 <= v)) RESULT: Ultimate proved your program to be correct! [2023-12-24 23:03:47,068 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...