/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-54.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 14:37:36,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 14:37:36,928 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 14:37:36,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 14:37:36,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 14:37:36,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 14:37:36,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 14:37:36,950 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 14:37:36,950 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 14:37:36,951 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 14:37:36,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 14:37:36,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 14:37:36,952 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 14:37:36,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 14:37:36,952 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 14:37:36,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 14:37:36,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 14:37:36,953 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 14:37:36,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 14:37:36,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 14:37:36,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 14:37:36,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 14:37:36,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 14:37:36,955 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 14:37:36,959 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 14:37:36,959 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 14:37:36,959 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 14:37:36,960 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 14:37:36,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 14:37:36,960 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 14:37:36,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 14:37:36,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 14:37:36,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 14:37:36,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 14:37:36,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:37:36,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 14:37:36,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 14:37:36,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 14:37:36,962 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 14:37:36,962 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 14:37:36,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 14:37:36,966 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 14:37:36,966 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 14:37:36,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 14:37:36,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 14:37:36,966 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 14:37:36,966 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 14:37:37,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 14:37:37,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 14:37:37,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 14:37:37,196 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 14:37:37,196 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 14:37:37,198 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-54.i [2023-12-16 14:37:38,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 14:37:38,620 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 14:37:38,621 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-54.i [2023-12-16 14:37:38,628 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d0f1ff9/f13671366aa44b8d9dcc14178090074e/FLAGb0c26f725 [2023-12-16 14:37:38,639 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d0f1ff9/f13671366aa44b8d9dcc14178090074e [2023-12-16 14:37:38,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 14:37:38,641 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 14:37:38,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 14:37:38,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 14:37:38,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 14:37:38,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f67a75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38, skipping insertion in model container [2023-12-16 14:37:38,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 14:37:38,779 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-54.i[915,928] [2023-12-16 14:37:38,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:37:38,813 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 14:37:38,822 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-54.i[915,928] [2023-12-16 14:37:38,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:37:38,846 INFO L206 MainTranslator]: Completed translation [2023-12-16 14:37:38,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38 WrapperNode [2023-12-16 14:37:38,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 14:37:38,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 14:37:38,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 14:37:38,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 14:37:38,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,862 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,879 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 72 [2023-12-16 14:37:38,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 14:37:38,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 14:37:38,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 14:37:38,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 14:37:38,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,907 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]. [2023-12-16 14:37:38,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 14:37:38,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 14:37:38,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 14:37:38,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 14:37:38,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (1/1) ... [2023-12-16 14:37:38,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:37:38,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 14:37:38,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 14:37:39,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 14:37:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 14:37:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 14:37:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 14:37:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 14:37:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 14:37:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 14:37:39,089 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 14:37:39,093 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 14:37:43,631 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 14:37:43,663 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 14:37:43,663 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 14:37:43,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:43 BoogieIcfgContainer [2023-12-16 14:37:43,663 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 14:37:43,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 14:37:43,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 14:37:43,668 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 14:37:43,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:37:38" (1/3) ... [2023-12-16 14:37:43,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c3dcd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:37:43, skipping insertion in model container [2023-12-16 14:37:43,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:38" (2/3) ... [2023-12-16 14:37:43,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c3dcd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:37:43, skipping insertion in model container [2023-12-16 14:37:43,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:43" (3/3) ... [2023-12-16 14:37:43,670 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-54.i [2023-12-16 14:37:43,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 14:37:43,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 14:37:43,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 14:37:43,724 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;@54738b33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 14:37:43,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 14:37:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 14:37:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 14:37:43,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:37:43,735 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 14:37:43,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:37:43,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:37:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -750925560, now seen corresponding path program 1 times [2023-12-16 14:37:43,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:37:43,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904888010] [2023-12-16 14:37:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:37:43,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:37:43,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:37:43,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:37:43,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 14:37:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:37:44,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 14:37:44,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:37:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-16 14:37:44,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:37:44,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:37:44,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904888010] [2023-12-16 14:37:44,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904888010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:37:44,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 14:37:44,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 14:37:44,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373605393] [2023-12-16 14:37:44,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:37:44,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 14:37:44,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:37:44,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 14:37:44,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 14:37:44,181 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 14:37:45,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:37:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:37:45,567 INFO L93 Difference]: Finished difference Result 53 states and 86 transitions. [2023-12-16 14:37:45,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 14:37:45,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-12-16 14:37:45,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:37:45,611 INFO L225 Difference]: With dead ends: 53 [2023-12-16 14:37:45,611 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 14:37:45,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 14:37:45,617 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 14:37:45,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 14:37:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 14:37:45,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-16 14:37:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 14:37:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2023-12-16 14:37:45,649 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 52 [2023-12-16 14:37:45,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:37:45,649 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-12-16 14:37:45,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 14:37:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-12-16 14:37:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 14:37:45,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:37:45,651 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 14:37:45,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 14:37:45,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:37:45,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:37:45,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:37:45,859 INFO L85 PathProgramCache]: Analyzing trace with hash 735457348, now seen corresponding path program 1 times [2023-12-16 14:37:45,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:37:45,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783383849] [2023-12-16 14:37:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:37:45,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:37:45,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:37:45,861 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:37:45,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 14:37:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:37:46,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 14:37:46,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:37:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 14:37:46,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:37:46,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:37:46,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783383849] [2023-12-16 14:37:46,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783383849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:37:46,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 14:37:46,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 14:37:46,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968148718] [2023-12-16 14:37:46,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:37:46,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 14:37:46,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:37:46,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 14:37:46,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 14:37:46,173 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 14:37:47,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:37:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:37:47,910 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2023-12-16 14:37:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 14:37:47,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 52 [2023-12-16 14:37:47,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:37:47,950 INFO L225 Difference]: With dead ends: 51 [2023-12-16 14:37:47,950 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 14:37:47,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 14:37:47,951 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 14:37:47,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 57 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 14:37:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 14:37:47,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-16 14:37:47,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 14:37:47,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2023-12-16 14:37:47,958 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 52 [2023-12-16 14:37:47,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:37:47,959 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2023-12-16 14:37:47,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 14:37:47,959 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2023-12-16 14:37:47,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 14:37:47,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:37:47,961 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 14:37:47,974 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 [2023-12-16 14:37:48,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:37:48,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:37:48,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:37:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash 737304390, now seen corresponding path program 1 times [2023-12-16 14:37:48,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:37:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742335727] [2023-12-16 14:37:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:37:48,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:37:48,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:37:48,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:37:48,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 14:37:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:37:48,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 14:37:48,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:38:23,340 WARN L293 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-16 14:38:32,570 WARN L293 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-16 14:38:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 14:38:51,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:38:51,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:38:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742335727] [2023-12-16 14:38:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742335727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:38:51,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 14:38:51,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 14:38:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121378206] [2023-12-16 14:38:51,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:38:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 14:38:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:38:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 14:38:51,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 14:38:51,804 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 14:38:53,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-16 14:38:53,935 WARN L340 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)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 14:38:53,935 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 14:38:54,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 14:38:54,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 14:38:54,422 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 14:38:54,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 14:38:54,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 14:38:54,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 14:38:54,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:38:54,627 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (26states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (8 states constructed, input type IntersectNwa). [2023-12-16 14:38:54,630 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-16 14:38:54,632 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 14:38:54,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:38:54 BoogieIcfgContainer [2023-12-16 14:38:54,634 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 14:38:54,635 INFO L158 Benchmark]: Toolchain (without parser) took 75993.00ms. Allocated memory was 185.6MB in the beginning and 229.6MB in the end (delta: 44.0MB). Free memory was 139.3MB in the beginning and 181.1MB in the end (delta: -41.8MB). Peak memory consumption was 2.4MB. Max. memory is 8.0GB. [2023-12-16 14:38:54,635 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 185.6MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 14:38:54,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.70ms. Allocated memory is still 185.6MB. Free memory was 139.3MB in the beginning and 127.0MB in the end (delta: 12.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 14:38:54,635 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.89ms. Allocated memory is still 185.6MB. Free memory was 127.0MB in the beginning and 125.0MB in the end (delta: 2.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 14:38:54,636 INFO L158 Benchmark]: Boogie Preprocessor took 42.18ms. Allocated memory is still 185.6MB. Free memory was 125.0MB in the beginning and 122.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 14:38:54,636 INFO L158 Benchmark]: RCFGBuilder took 4731.46ms. Allocated memory is still 185.6MB. Free memory was 122.9MB in the beginning and 107.5MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 14:38:54,636 INFO L158 Benchmark]: TraceAbstraction took 70969.01ms. Allocated memory was 185.6MB in the beginning and 229.6MB in the end (delta: 44.0MB). Free memory was 106.8MB in the beginning and 181.1MB in the end (delta: -74.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 14:38:54,638 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 185.6MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.70ms. Allocated memory is still 185.6MB. Free memory was 139.3MB in the beginning and 127.0MB in the end (delta: 12.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.89ms. Allocated memory is still 185.6MB. Free memory was 127.0MB in the beginning and 125.0MB in the end (delta: 2.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.18ms. Allocated memory is still 185.6MB. Free memory was 125.0MB in the beginning and 122.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 4731.46ms. Allocated memory is still 185.6MB. Free memory was 122.9MB in the beginning and 107.5MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 70969.01ms. Allocated memory was 185.6MB in the beginning and 229.6MB in the end (delta: 44.0MB). Free memory was 106.8MB in the beginning and 181.1MB in the end (delta: -74.2MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (26states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (8 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.9s, OverallIterations: 3, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 105 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 68 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 63.5s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 14 NumberOfNonLiveVariables, 281 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 336/336 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown