/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-64bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.counter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 09:13:30,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 09:13:30,180 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-26 09:13:30,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 09:13:30,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 09:13:30,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 09:13:30,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 09:13:30,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 09:13:30,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 09:13:30,212 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 09:13:30,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 09:13:30,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 09:13:30,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 09:13:30,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 09:13:30,214 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 09:13:30,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 09:13:30,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 09:13:30,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 09:13:30,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 09:13:30,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 09:13:30,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 09:13:30,216 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 09:13:30,216 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 09:13:30,216 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 09:13:30,216 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 09:13:30,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 09:13:30,217 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 09:13:30,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 09:13:30,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 09:13:30,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 09:13:30,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 09:13:30,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 09:13:30,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 09:13:30,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 09:13:30,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 09:13:30,219 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 09:13:30,219 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 09:13:30,219 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 09:13:30,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 09:13:30,219 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 09:13:30,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 09:13:30,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 09:13:30,219 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 09:13:30,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 09:13:30,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 09:13:30,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 09:13:30,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 09:13:30,430 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 09:13:30,431 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 09:13:30,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.counter.c [2023-12-26 09:13:31,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 09:13:31,722 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 09:13:31,723 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.counter.c [2023-12-26 09:13:31,728 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aad0cfd7/fb769b26e0674ab2907cad26698b91f4/FLAGc4256f6e4 [2023-12-26 09:13:31,741 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aad0cfd7/fb769b26e0674ab2907cad26698b91f4 [2023-12-26 09:13:31,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 09:13:31,744 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 09:13:31,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 09:13:31,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 09:13:31,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 09:13:31,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:31,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a31d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31, skipping insertion in model container [2023-12-26 09:13:31,751 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:31,771 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 09:13:31,893 WARN L239 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.counter.c[1247,1260] [2023-12-26 09:13:31,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 09:13:31,925 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 09:13:31,933 WARN L239 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.counter.c[1247,1260] [2023-12-26 09:13:31,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 09:13:31,950 INFO L206 MainTranslator]: Completed translation [2023-12-26 09:13:31,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31 WrapperNode [2023-12-26 09:13:31,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 09:13:31,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 09:13:31,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 09:13:31,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 09:13:31,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:31,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:31,976 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-12-26 09:13:31,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 09:13:31,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 09:13:31,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 09:13:31,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 09:13:31,983 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:31,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:31,985 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:31,998 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]. [2023-12-26 09:13:31,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:31,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:32,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:32,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:32,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:32,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:32,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 09:13:32,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 09:13:32,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 09:13:32,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 09:13:32,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (1/1) ... [2023-12-26 09:13:32,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 09:13:32,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 09:13:32,066 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) [2023-12-26 09:13:32,091 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 [2023-12-26 09:13:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 09:13:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 09:13:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 09:13:32,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 09:13:32,196 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 09:13:32,197 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 09:13:32,363 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 09:13:32,381 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 09:13:32,382 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 09:13:32,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 09:13:32 BoogieIcfgContainer [2023-12-26 09:13:32,382 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 09:13:32,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 09:13:32,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 09:13:32,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 09:13:32,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 09:13:31" (1/3) ... [2023-12-26 09:13:32,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74377ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 09:13:32, skipping insertion in model container [2023-12-26 09:13:32,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 09:13:31" (2/3) ... [2023-12-26 09:13:32,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74377ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 09:13:32, skipping insertion in model container [2023-12-26 09:13:32,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 09:13:32" (3/3) ... [2023-12-26 09:13:32,390 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.counter.c [2023-12-26 09:13:32,402 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 09:13:32,403 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 09:13:32,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 09:13:32,442 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;@2abbf635, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 09:13:32,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 09:13:32,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2023-12-26 09:13:32,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-26 09:13:32,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 09:13:32,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-26 09:13:32,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 09:13:32,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 09:13:32,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-26 09:13:32,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 09:13:32,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272972841] [2023-12-26 09:13:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 09:13:32,462 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 [2023-12-26 09:13:32,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 09:13:32,498 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) [2023-12-26 09:13:32,530 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 [2023-12-26 09:13:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 09:13:32,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-26 09:13:32,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 09:13:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 09:13:32,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 09:13:32,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 09:13:32,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272972841] [2023-12-26 09:13:32,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272972841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 09:13:32,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 09:13:32,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-26 09:13:32,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330543334] [2023-12-26 09:13:32,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 09:13:32,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 09:13:32,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 09:13:32,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 09:13:32,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 09:13:32,743 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-12-26 09:13:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 09:13:32,790 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-26 09:13:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 09:13:32,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-26 09:13:32,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 09:13:32,797 INFO L225 Difference]: With dead ends: 16 [2023-12-26 09:13:32,797 INFO L226 Difference]: Without dead ends: 9 [2023-12-26 09:13:32,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-26 09:13:32,802 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-26 09:13:32,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-26 09:13:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-26 09:13:32,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-26 09:13:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 09:13:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-26 09:13:32,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-26 09:13:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 09:13:32,824 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-26 09:13:32,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-12-26 09:13:32,825 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-26 09:13:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-26 09:13:32,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 09:13:32,825 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-26 09:13:32,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-26 09:13:33,027 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 [2023-12-26 09:13:33,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 09:13:33,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 09:13:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-26 09:13:33,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 09:13:33,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923677191] [2023-12-26 09:13:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 09:13:33,030 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 [2023-12-26 09:13:33,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 09:13:33,031 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) [2023-12-26 09:13:33,052 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 [2023-12-26 09:13:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 09:13:33,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-26 09:13:33,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 09:13:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 09:13:33,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 09:13:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 09:13:33,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 09:13:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923677191] [2023-12-26 09:13:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923677191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 09:13:33,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 09:13:33,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-26 09:13:33,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532273990] [2023-12-26 09:13:33,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 09:13:33,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-26 09:13:33,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 09:13:33,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-26 09:13:33,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-26 09:13:33,824 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2023-12-26 09:13:34,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 09:13:34,015 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2023-12-26 09:13:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-26 09:13:34,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-26 09:13:34,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 09:13:34,016 INFO L225 Difference]: With dead ends: 17 [2023-12-26 09:13:34,016 INFO L226 Difference]: Without dead ends: 15 [2023-12-26 09:13:34,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-12-26 09:13:34,017 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-26 09:13:34,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-26 09:13:34,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-26 09:13:34,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-26 09:13:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 09:13:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-26 09:13:34,021 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2023-12-26 09:13:34,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 09:13:34,021 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-26 09:13:34,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2023-12-26 09:13:34,021 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-26 09:13:34,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-26 09:13:34,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 09:13:34,022 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-12-26 09:13:34,039 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 [2023-12-26 09:13:34,224 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 [2023-12-26 09:13:34,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 09:13:34,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 09:13:34,225 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 2 times [2023-12-26 09:13:34,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 09:13:34,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194115443] [2023-12-26 09:13:34,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 09:13:34,226 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 [2023-12-26 09:13:34,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 09:13:34,227 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) [2023-12-26 09:13:34,249 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 [2023-12-26 09:13:34,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 09:13:34,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 09:13:34,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-26 09:13:34,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 09:13:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 09:13:34,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 09:13:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 09:13:46,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 09:13:46,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194115443] [2023-12-26 09:13:46,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194115443] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 09:13:46,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 09:13:46,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-26 09:13:46,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596052836] [2023-12-26 09:13:46,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 09:13:46,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-26 09:13:46,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 09:13:46,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-26 09:13:46,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=88, Unknown=1, NotChecked=0, Total=132 [2023-12-26 09:13:46,645 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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) [2023-12-26 09:13:55,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 09:13:55,074 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-12-26 09:13:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-26 09:13:55,074 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-26 09:13:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 09:13:55,075 INFO L225 Difference]: With dead ends: 29 [2023-12-26 09:13:55,075 INFO L226 Difference]: Without dead ends: 27 [2023-12-26 09:13:55,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=167, Invalid=294, Unknown=1, NotChecked=0, Total=462 [2023-12-26 09:13:55,078 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-26 09:13:55,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 17 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-26 09:13:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-26 09:13:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2023-12-26 09:13:55,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 09:13:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2023-12-26 09:13:55,089 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 13 [2023-12-26 09:13:55,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 09:13:55,089 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2023-12-26 09:13:55,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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) [2023-12-26 09:13:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2023-12-26 09:13:55,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-26 09:13:55,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 09:13:55,091 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1] [2023-12-26 09:13:55,096 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 [2023-12-26 09:13:55,297 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 [2023-12-26 09:13:55,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 09:13:55,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 09:13:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash 284396189, now seen corresponding path program 3 times [2023-12-26 09:13:55,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 09:13:55,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728164486] [2023-12-26 09:13:55,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-26 09:13:55,298 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 [2023-12-26 09:13:55,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 09:13:55,302 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) [2023-12-26 09:13:55,304 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 [2023-12-26 09:13:55,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-26 09:13:55,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 09:13:55,360 WARN L260 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-26 09:13:55,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 09:13:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-26 09:13:55,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 09:14:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-26 09:14:01,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 09:14:01,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728164486] [2023-12-26 09:14:01,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728164486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 09:14:01,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 09:14:01,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-26 09:14:01,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986547219] [2023-12-26 09:14:01,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 09:14:01,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-26 09:14:01,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 09:14:01,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-26 09:14:01,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-26 09:14:01,040 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 09:14:01,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 09:14:01,107 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2023-12-26 09:14:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 09:14:01,109 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-26 09:14:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 09:14:01,109 INFO L225 Difference]: With dead ends: 26 [2023-12-26 09:14:01,109 INFO L226 Difference]: Without dead ends: 0 [2023-12-26 09:14:01,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-26 09:14:01,110 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-26 09:14:01,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-26 09:14:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-26 09:14:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-26 09:14:01,111 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) [2023-12-26 09:14:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-26 09:14:01,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2023-12-26 09:14:01,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 09:14:01,111 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-26 09:14:01,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 09:14:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-26 09:14:01,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-26 09:14:01,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-26 09:14:01,116 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 [2023-12-26 09:14:01,315 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 [2023-12-26 09:14:01,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-26 09:14:01,556 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-26 09:14:01,556 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-12-26 09:14:01,557 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-12-26 09:14:01,557 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-12-26 09:14:01,557 INFO L895 garLoopResultBuilder]: At program point L44-2(lines 44 81) the Hoare annotation is: (and (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~var_5~0#1|) (not (= ((_ zero_extend 24) |ULTIMATE.start_main_~state_6~0#1|) (_ bv0 32))) (= |ULTIMATE.start_main_~var_8~0#1| (_ bv0 8)) (= (_ bv15 8) |ULTIMATE.start_main_~mask_SORT_4~0#1|) (= (_ bv15 8) |ULTIMATE.start_main_~var_18~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~var_12~0#1|) (exists ((|ULTIMATE.start_main_~var_21_arg_1~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvand (_ bv15 32) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_21_arg_1~0#1|))))) |ULTIMATE.start_main_~state_6~0#1|))) [2023-12-26 09:14:01,557 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-26 09:14:01,557 INFO L899 garLoopResultBuilder]: For program point L44-3(lines 44 81) no Hoare annotation was computed. [2023-12-26 09:14:01,557 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-12-26 09:14:01,559 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-12-26 09:14:01,561 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-26 09:14:01,569 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_21_arg_1~0#1 : bv8 :: ~bvand~32(15bv32, ~zero_extend~32~8(~zero_extend~32~8(ULTIMATE.start_main_~var_21_arg_1~0#1)[7:0]))[7:0] == ~state_6~0) could not be translated [2023-12-26 09:14:01,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.12 09:14:01 BoogieIcfgContainer [2023-12-26 09:14:01,569 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-26 09:14:01,570 INFO L158 Benchmark]: Toolchain (without parser) took 29825.49ms. Allocated memory was 288.4MB in the beginning and 599.8MB in the end (delta: 311.4MB). Free memory was 237.6MB in the beginning and 224.1MB in the end (delta: 13.5MB). Peak memory consumption was 325.3MB. Max. memory is 8.0GB. [2023-12-26 09:14:01,570 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 205.5MB. Free memory is still 157.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 09:14:01,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.23ms. Allocated memory is still 288.4MB. Free memory was 237.6MB in the beginning and 225.5MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-26 09:14:01,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.44ms. Allocated memory is still 288.4MB. Free memory was 225.5MB in the beginning and 224.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-26 09:14:01,570 INFO L158 Benchmark]: Boogie Preprocessor took 39.01ms. Allocated memory is still 288.4MB. Free memory was 223.6MB in the beginning and 221.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-26 09:14:01,571 INFO L158 Benchmark]: RCFGBuilder took 365.88ms. Allocated memory is still 288.4MB. Free memory was 221.9MB in the beginning and 207.8MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-26 09:14:01,571 INFO L158 Benchmark]: TraceAbstraction took 29185.36ms. Allocated memory was 288.4MB in the beginning and 599.8MB in the end (delta: 311.4MB). Free memory was 207.2MB in the beginning and 224.1MB in the end (delta: -16.9MB). Peak memory consumption was 294.9MB. Max. memory is 8.0GB. [2023-12-26 09:14:01,572 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 205.5MB. Free memory is still 157.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.23ms. Allocated memory is still 288.4MB. Free memory was 237.6MB in the beginning and 225.5MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.44ms. Allocated memory is still 288.4MB. Free memory was 225.5MB in the beginning and 224.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.01ms. Allocated memory is still 288.4MB. Free memory was 223.6MB in the beginning and 221.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 365.88ms. Allocated memory is still 288.4MB. Free memory was 221.9MB in the beginning and 207.8MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 29185.36ms. Allocated memory was 288.4MB in the beginning and 599.8MB in the end (delta: 311.4MB). Free memory was 207.2MB in the beginning and 224.1MB in the end (delta: -16.9MB). Peak memory consumption was 294.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_21_arg_1~0#1 : bv8 :: ~bvand~32(15bv32, ~zero_extend~32~8(~zero_extend~32~8(ULTIMATE.start_main_~var_21_arg_1~0#1)[7:0]))[7:0] == ~state_6~0) could not be translated * 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: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.1s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 6 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 16.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 9 NumberOfFragments, 34 HoareAnnotationTreeSize, 1 FormulaSimplifications, 2782 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 1 FormulaSimplificationsInter, 2244 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 49 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 87 ConstructedInterpolants, 40 QuantifiedInterpolants, 46165 SizeOfPredicates, 155 NumberOfNonLiveVariables, 318 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 96/188 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: 44]: Loop Invariant Derived loop invariant: (((((((1 == mask_SORT_1) && (1 == var_5)) && !((state_6 == 0))) && (var_8 == 0)) && (15 == mask_SORT_4)) && (15 == var_18)) && (1 == var_12)) RESULT: Ultimate proved your program to be correct! [2023-12-26 09:14:01,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...