/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver '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' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w64_d64_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 17:13:03,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 17:13:03,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 17:13:03,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 17:13:03,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 17:13:03,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 17:13:03,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 17:13:03,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 17:13:03,846 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 17:13:03,846 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 17:13:03,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 17:13:03,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 17:13:03,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 17:13:03,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 17:13:03,847 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 17:13:03,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 17:13:03,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 17:13:03,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 17:13:03,849 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 17:13:03,849 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 17:13:03,849 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 17:13:03,849 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 17:13:03,850 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 17:13:03,850 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 17:13:03,850 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 17:13:03,850 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 17:13:03,850 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 17:13:03,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 17:13:03,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 17:13:03,851 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 17:13:03,851 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 17:13:03,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 17:13:03,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 17:13:03,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 17:13:03,852 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 17:13:03,852 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 17:13:03,853 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 17:13:03,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 17:13:03,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 17:13:03,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 17:13:03,853 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 17:13:03,857 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 17:13:03,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-01 17:13:04,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 17:13:04,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 17:13:04,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 17:13:04,137 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 17:13:04,137 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 17:13:04,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w64_d64_e0.c [2024-11-01 17:13:05,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 17:13:05,707 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 17:13:05,708 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w64_d64_e0.c [2024-11-01 17:13:05,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07bacb81/31c8093259f94a0eb33e3a545902f37e/FLAG2b4180b1a [2024-11-01 17:13:05,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07bacb81/31c8093259f94a0eb33e3a545902f37e [2024-11-01 17:13:05,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 17:13:05,739 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 17:13:05,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 17:13:05,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 17:13:05,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 17:13:05,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 05:13:05" (1/1) ... [2024-11-01 17:13:05,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694d3abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:05, skipping insertion in model container [2024-11-01 17:13:05,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 05:13:05" (1/1) ... [2024-11-01 17:13:05,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 17:13:05,958 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w64_d64_e0.c[1280,1293] [2024-11-01 17:13:06,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 17:13:06,228 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 17:13:06,236 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w64_d64_e0.c[1280,1293] [2024-11-01 17:13:06,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 17:13:06,465 INFO L204 MainTranslator]: Completed translation [2024-11-01 17:13:06,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06 WrapperNode [2024-11-01 17:13:06,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 17:13:06,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 17:13:06,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 17:13:06,468 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 17:13:06,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,607 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2549 [2024-11-01 17:13:06,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 17:13:06,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 17:13:06,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 17:13:06,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 17:13:06,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,638 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,680 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]. [2024-11-01 17:13:06,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 17:13:06,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 17:13:06,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 17:13:06,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 17:13:06,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (1/1) ... [2024-11-01 17:13:06,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 17:13:06,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 17:13:06,799 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) [2024-11-01 17:13:06,802 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 [2024-11-01 17:13:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 17:13:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 17:13:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 17:13:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 17:13:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 17:13:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 17:13:07,215 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 17:13:07,217 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 17:13:08,887 INFO L? ?]: Removed 705 outVars from TransFormulas that were not future-live. [2024-11-01 17:13:08,888 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 17:13:08,897 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 17:13:08,897 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 17:13:08,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 05:13:08 BoogieIcfgContainer [2024-11-01 17:13:08,898 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 17:13:08,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 17:13:08,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 17:13:08,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 17:13:08,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 05:13:05" (1/3) ... [2024-11-01 17:13:08,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9d1f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 05:13:08, skipping insertion in model container [2024-11-01 17:13:08,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:13:06" (2/3) ... [2024-11-01 17:13:08,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9d1f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 05:13:08, skipping insertion in model container [2024-11-01 17:13:08,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 05:13:08" (3/3) ... [2024-11-01 17:13:08,906 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w64_d64_e0.c [2024-11-01 17:13:08,918 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 17:13:08,918 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 17:13:08,967 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 17:13:08,973 INFO L333 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, 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;@6348ee95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 17:13:08,973 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 17:13:08,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-01 17:13:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 17:13:08,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 17:13:08,983 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 17:13:08,983 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 17:13:08,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 17:13:08,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times [2024-11-01 17:13:08,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 17:13:08,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723471358] [2024-11-01 17:13:08,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 17:13:08,994 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 [2024-11-01 17:13:08,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-01 17:13:09,011 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) [2024-11-01 17:13:09,012 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 [2024-11-01 17:13:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 17:13:09,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 17:13:09,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 17:13:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-01 17:13:09,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 17:13:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-01 17:13:09,836 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 17:13:09,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723471358] [2024-11-01 17:13:09,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1723471358] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-01 17:13:09,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-01 17:13:09,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-01 17:13:09,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879844459] [2024-11-01 17:13:09,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-01 17:13:09,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 17:13:09,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 17:13:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 17:13:09,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 17:13:09,857 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-01 17:13:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 17:13:09,868 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-01 17:13:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 17:13:09,870 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-11-01 17:13:09,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 17:13:09,875 INFO L225 Difference]: With dead ends: 35 [2024-11-01 17:13:09,875 INFO L226 Difference]: Without dead ends: 17 [2024-11-01 17:13:09,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 17:13:09,880 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 17:13:09,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 17:13:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-01 17:13:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-01 17:13:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-01 17:13:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-01 17:13:09,903 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23 [2024-11-01 17:13:09,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 17:13:09,904 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-01 17:13:09,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-01 17:13:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-01 17:13:09,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 17:13:09,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 17:13:09,905 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 17:13:09,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-01 17:13:10,106 WARN L453 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 [2024-11-01 17:13:10,107 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 17:13:10,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 17:13:10,109 INFO L85 PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times [2024-11-01 17:13:10,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 17:13:10,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048260192] [2024-11-01 17:13:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 17:13:10,110 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 [2024-11-01 17:13:10,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-01 17:13:10,113 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) [2024-11-01 17:13:10,114 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 [2024-11-01 17:13:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 17:13:10,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-01 17:13:10,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 17:13:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-01 17:13:11,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 17:13:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-01 17:13:11,302 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 17:13:11,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048260192] [2024-11-01 17:13:11,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1048260192] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 17:13:11,302 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 17:13:11,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 17:13:11,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684916989] [2024-11-01 17:13:11,302 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 17:13:11,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 17:13:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 17:13:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 17:13:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 17:13:11,304 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-01 17:13:11,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 17:13:11,749 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-01 17:13:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 17:13:11,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 23 [2024-11-01 17:13:11,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 17:13:11,751 INFO L225 Difference]: With dead ends: 27 [2024-11-01 17:13:11,751 INFO L226 Difference]: Without dead ends: 25 [2024-11-01 17:13:11,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 17:13:11,752 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-01 17:13:11,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-01 17:13:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-01 17:13:11,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-01 17:13:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-01 17:13:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-01 17:13:11,763 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2024-11-01 17:13:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 17:13:11,767 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-01 17:13:11,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-01 17:13:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-01 17:13:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-01 17:13:11,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 17:13:11,768 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-01 17:13:11,787 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 [2024-11-01 17:13:11,969 WARN L453 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 [2024-11-01 17:13:11,970 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 17:13:11,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 17:13:11,970 INFO L85 PathProgramCache]: Analyzing trace with hash 416519459, now seen corresponding path program 1 times [2024-11-01 17:13:11,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 17:13:11,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812976249] [2024-11-01 17:13:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 17:13:11,971 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 [2024-11-01 17:13:11,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-01 17:13:11,972 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) [2024-11-01 17:13:11,973 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 [2024-11-01 17:13:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 17:13:17,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-01 17:13:17,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 17:13:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-01 17:13:18,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 17:14:04,944 WARN L286 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 360 DAG size of output: 362 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-01 17:14:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-01 17:14:05,162 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 17:14:05,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812976249] [2024-11-01 17:14:05,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1812976249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 17:14:05,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 17:14:05,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-01 17:14:05,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897393908] [2024-11-01 17:14:05,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 17:14:05,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-01 17:14:05,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 17:14:05,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-01 17:14:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-01 17:14:05,168 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-01 17:14:06,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 17:14:06,912 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-01 17:14:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-01 17:14:06,914 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) Word has length 44 [2024-11-01 17:14:06,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 17:14:06,914 INFO L225 Difference]: With dead ends: 36 [2024-11-01 17:14:06,915 INFO L226 Difference]: Without dead ends: 34 [2024-11-01 17:14:06,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-01 17:14:06,916 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-01 17:14:06,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 65 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-01 17:14:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-01 17:14:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-01 17:14:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-01 17:14:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-01 17:14:06,926 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 44 [2024-11-01 17:14:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 17:14:06,926 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-01 17:14:06,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-01 17:14:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-01 17:14:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-01 17:14:06,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 17:14:06,928 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-01 17:14:06,975 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 [2024-11-01 17:14:07,128 WARN L453 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 [2024-11-01 17:14:07,131 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 17:14:07,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 17:14:07,131 INFO L85 PathProgramCache]: Analyzing trace with hash 223728499, now seen corresponding path program 2 times [2024-11-01 17:14:07,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 17:14:07,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066211005] [2024-11-01 17:14:07,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 17:14:07,132 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 [2024-11-01 17:14:07,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-01 17:14:07,133 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) [2024-11-01 17:14:07,135 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 [2024-11-01 17:14:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 17:14:23,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-01 17:14:23,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 17:14:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 64 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-01 17:14:25,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 17:14:31,854 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse2 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_374~0#1|)) (.cse3 (forall ((|v_ULTIMATE.start_main_~var_397_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_393_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_397_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_393_arg_1~0#1_17|))))))))) .cse5)))))) (let ((.cse8 (or .cse2 .cse3)) (.cse9 (not .cse2)) (.cse10 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_351~0#1|))) (let ((.cse4 (and .cse8 (or .cse9 (forall ((|v_ULTIMATE.start_main_~var_357_arg_1~0#1_16| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_354_arg_1~0#1_16| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_368_arg_1~0#1_16| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_397_arg_0~0#1_18| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_397_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_368_arg_1~0#1_16|) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_357_arg_1~0#1_16|) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse10 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_354_arg_1~0#1_16|)))))))))))))))))))))))))))))))) (let ((.cse0 (let ((.cse7 (= |c_ULTIMATE.start_main_~state_370~0#1| (bvand |c_ULTIMATE.start_main_~mask_SORT_3~0#1| |c_ULTIMATE.start_main_~state_338~0#1|)))) (and (or (not .cse7) (and .cse8 (or .cse9 (forall ((|v_ULTIMATE.start_main_~var_357_arg_1~0#1_16| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_354_arg_1~0#1_16| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_368_arg_1~0#1_16| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_397_arg_0~0#1_18| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_397_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_368_arg_1~0#1_16|) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_357_arg_1~0#1_16|) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse10 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_354_arg_1~0#1_16|)))))))))))))))))))))))))) (_ bv0 8)))))) (or .cse7 .cse4)))) (.cse6 (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_13~0#1|) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_12~0#1|))))))))) (and (or (let ((.cse1 (= ((_ extract 7 0) (bvand .cse5 (_ bv254 32))) (_ bv0 8)))) (and (or .cse0 .cse1) (or (not .cse1) (and (or (forall ((|v_ULTIMATE.start_main_~var_341_arg_2~0#1_17| (_ BitVec 64))) (not (= (bvand |v_ULTIMATE.start_main_~var_341_arg_2~0#1_17| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|) |c_ULTIMATE.start_main_~state_370~0#1|))) .cse2 .cse3) (or (forall ((|v_ULTIMATE.start_main_~var_341_arg_2~0#1_17| (_ BitVec 64))) (= (bvand |v_ULTIMATE.start_main_~var_341_arg_2~0#1_17| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|) |c_ULTIMATE.start_main_~state_370~0#1|)) .cse4))))) .cse6) (or .cse0 (= (_ bv0 8) ((_ extract 7 0) (bvand .cse5 (_ bv255 32)))) (not .cse6)))))))) is different from false