/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_amount250_file-98.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 14:48:53,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 14:48:53,735 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 14:48:53,739 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 14:48:53,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 14:48:53,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 14:48:53,762 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 14:48:53,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 14:48:53,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 14:48:53,767 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 14:48:53,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 14:48:53,768 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 14:48:53,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 14:48:53,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 14:48:53,770 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 14:48:53,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 14:48:53,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 14:48:53,771 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 14:48:53,772 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 14:48:53,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 14:48:53,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 14:48:53,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 14:48:53,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 14:48:53,773 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 14:48:53,773 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 14:48:53,773 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 14:48:53,773 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 14:48:53,773 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 14:48:53,773 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 14:48:53,774 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 14:48:53,774 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 14:48:53,774 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 14:48:53,774 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 14:48:53,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 14:48:53,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:48:53,775 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 14:48:53,775 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 14:48:53,775 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 14:48:53,775 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 14:48:53,775 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 14:48:53,775 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 14:48:53,776 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 14:48:53,776 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 14:48:53,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 14:48:53,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 14:48:53,776 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 14:48:53,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 14:48:53,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 14:48:53,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 14:48:53,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 14:48:53,954 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 14:48:53,954 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 14:48:53,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-98.i [2023-12-16 14:48:55,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 14:48:55,189 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 14:48:55,189 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-98.i [2023-12-16 14:48:55,203 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f38421a2d/8789d3bca8ba44a0b99e6f275fb62d26/FLAGb96879a63 [2023-12-16 14:48:55,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f38421a2d/8789d3bca8ba44a0b99e6f275fb62d26 [2023-12-16 14:48:55,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 14:48:55,216 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 14:48:55,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 14:48:55,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 14:48:55,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 14:48:55,221 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0c812f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55, skipping insertion in model container [2023-12-16 14:48:55,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 14:48:55,354 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_amount250_file-98.i[916,929] [2023-12-16 14:48:55,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:48:55,479 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 14:48:55,489 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_amount250_file-98.i[916,929] [2023-12-16 14:48:55,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:48:55,549 INFO L206 MainTranslator]: Completed translation [2023-12-16 14:48:55,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55 WrapperNode [2023-12-16 14:48:55,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 14:48:55,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 14:48:55,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 14:48:55,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 14:48:55,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,576 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,611 INFO L138 Inliner]: procedures = 27, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 330 [2023-12-16 14:48:55,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 14:48:55,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 14:48:55,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 14:48:55,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 14:48:55,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,646 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 14:48:55,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,684 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 14:48:55,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 14:48:55,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 14:48:55,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 14:48:55,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (1/1) ... [2023-12-16 14:48:55,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:48:55,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 14:48:55,734 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 14:48:55,747 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 14:48:55,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 14:48:55,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 14:48:55,761 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 14:48:55,763 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 14:48:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 14:48:55,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 14:48:55,870 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 14:48:55,872 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 14:49:03,644 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 14:49:03,724 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 14:49:03,725 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 14:49:03,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:49:03 BoogieIcfgContainer [2023-12-16 14:49:03,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 14:49:03,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 14:49:03,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 14:49:03,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 14:49:03,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:48:55" (1/3) ... [2023-12-16 14:49:03,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75386746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:49:03, skipping insertion in model container [2023-12-16 14:49:03,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:48:55" (2/3) ... [2023-12-16 14:49:03,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75386746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:49:03, skipping insertion in model container [2023-12-16 14:49:03,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:49:03" (3/3) ... [2023-12-16 14:49:03,732 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-98.i [2023-12-16 14:49:03,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 14:49:03,745 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 14:49:03,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 14:49:03,797 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;@5ebb8ea2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 14:49:03,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 14:49:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 92 states have (on average 1.565217391304348) internal successors, (144), 93 states have internal predecessors, (144), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 14:49:03,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-16 14:49:03,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:49:03,833 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 14:49:03,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:49:03,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:49:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash 774146830, now seen corresponding path program 1 times [2023-12-16 14:49:03,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:49:03,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080724753] [2023-12-16 14:49:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:49:03,851 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 14:49:03,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:49:03,853 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 14:49:03,857 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 14:49:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:49:04,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 14:49:04,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:49:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 3364 trivial. 0 not checked. [2023-12-16 14:49:04,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:49:04,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:49:04,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080724753] [2023-12-16 14:49:04,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080724753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:49:04,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 14:49:04,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 14:49:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766178408] [2023-12-16 14:49:04,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:49:04,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 14:49:04,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:49:04,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 14:49:04,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 14:49:04,648 INFO L87 Difference]: Start difference. First operand has 138 states, 92 states have (on average 1.565217391304348) internal successors, (144), 93 states have internal predecessors, (144), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 14:49:08,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:49:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:49:08,905 INFO L93 Difference]: Finished difference Result 273 states and 501 transitions. [2023-12-16 14:49:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 14:49:08,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 277 [2023-12-16 14:49:08,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:49:08,988 INFO L225 Difference]: With dead ends: 273 [2023-12-16 14:49:08,988 INFO L226 Difference]: Without dead ends: 136 [2023-12-16 14:49:08,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 276 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 14:49:08,993 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-16 14:49:08,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-16 14:49:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-16 14:49:09,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-12-16 14:49:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 91 states have (on average 1.5274725274725274) internal successors, (139), 91 states have internal predecessors, (139), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 14:49:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 225 transitions. [2023-12-16 14:49:09,038 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 225 transitions. Word has length 277 [2023-12-16 14:49:09,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:49:09,038 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 225 transitions. [2023-12-16 14:49:09,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 14:49:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 225 transitions. [2023-12-16 14:49:09,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-16 14:49:09,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:49:09,042 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 14:49:09,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 14:49:09,249 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 14:49:09,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:49:09,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:49:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1825928204, now seen corresponding path program 1 times [2023-12-16 14:49:09,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:49:09,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414289900] [2023-12-16 14:49:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:49:09,251 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 14:49:09,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:49:09,252 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 14:49:09,265 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 14:49:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:49:09,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 14:49:09,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:49:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 516 proven. 117 refuted. 0 times theorem prover too weak. 2979 trivial. 0 not checked. [2023-12-16 14:49:14,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:49:15,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:49:15,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414289900] [2023-12-16 14:49:15,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414289900] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 14:49:15,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1376131776] [2023-12-16 14:49:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:49:15,554 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 14:49:15,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 14:49:15,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 14:49:15,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-16 14:49:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:49:17,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 14:49:17,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:49:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-12-16 14:49:22,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:49:22,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1376131776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:49:22,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 14:49:22,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-16 14:49:22,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684293548] [2023-12-16 14:49:22,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:49:22,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 14:49:22,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:49:22,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 14:49:22,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-16 14:49:22,622 INFO L87 Difference]: Start difference. First operand 136 states and 225 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-16 14:49:24,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:49:31,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:49:35,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:49:38,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:49:38,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:49:38,765 INFO L93 Difference]: Finished difference Result 406 states and 673 transitions. [2023-12-16 14:49:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 14:49:38,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 277 [2023-12-16 14:49:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:49:38,774 INFO L225 Difference]: With dead ends: 406 [2023-12-16 14:49:38,774 INFO L226 Difference]: Without dead ends: 271 [2023-12-16 14:49:38,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-16 14:49:38,777 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 91 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2023-12-16 14:49:38,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 469 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 2 Unknown, 0 Unchecked, 16.1s Time] [2023-12-16 14:49:38,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-16 14:49:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2023-12-16 14:49:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 180 states have (on average 1.5222222222222221) internal successors, (274), 180 states have internal predecessors, (274), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-16 14:49:38,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 446 transitions. [2023-12-16 14:49:38,805 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 446 transitions. Word has length 277 [2023-12-16 14:49:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:49:38,808 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 446 transitions. [2023-12-16 14:49:38,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-16 14:49:38,809 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 446 transitions. [2023-12-16 14:49:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-16 14:49:38,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:49:38,811 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 14:49:38,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-16 14:49:39,037 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 14:49:39,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 14:49:39,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:49:39,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:49:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash 607765390, now seen corresponding path program 1 times [2023-12-16 14:49:39,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:49:39,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929238090] [2023-12-16 14:49:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:49:39,218 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 14:49:39,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:49:39,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:49:39,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 14:49:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:49:39,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 14:49:39,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:49:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 516 proven. 117 refuted. 0 times theorem prover too weak. 2979 trivial. 0 not checked. [2023-12-16 14:49:44,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:49:45,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:49:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929238090] [2023-12-16 14:49:45,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929238090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 14:49:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1327727917] [2023-12-16 14:49:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:49:45,352 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 14:49:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 14:49:45,353 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 14:49:45,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-16 14:49:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:49:47,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 14:49:47,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:49:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 516 proven. 117 refuted. 0 times theorem prover too weak. 2979 trivial. 0 not checked. [2023-12-16 14:49:51,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:49:52,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1327727917] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 14:49:52,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 14:49:52,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-12-16 14:49:52,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929021866] [2023-12-16 14:49:52,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 14:49:52,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 14:49:52,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:49:52,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 14:49:52,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-16 14:49:52,262 INFO L87 Difference]: Start difference. First operand 269 states and 446 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 14:49:59,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:50:03,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:50:07,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-16 14:50:08,261 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 14:50:08,272 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 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 14:50:08,295 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 14:50:09,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-16 14:50:09,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 14:50:09,501 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 14:50:09,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 1057 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-12-16 14:50:09,517 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 443 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 99 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-16 14:50:09,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 393 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 363 Invalid, 3 Unknown, 0 Unchecked, 14.3s Time] [2023-12-16 14:50:09,518 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 14:50:09,519 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-16 14:50:09,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 14:50:09,523 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-16 14:50:09,525 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 14:50:09,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:50:09 BoogieIcfgContainer [2023-12-16 14:50:09,527 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 14:50:09,527 INFO L158 Benchmark]: Toolchain (without parser) took 74311.31ms. Allocated memory is still 234.9MB. Free memory was 182.5MB in the beginning and 138.8MB in the end (delta: 43.7MB). Peak memory consumption was 44.6MB. Max. memory is 8.0GB. [2023-12-16 14:50:09,527 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 175.1MB. Free memory is still 122.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 14:50:09,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.71ms. Allocated memory is still 234.9MB. Free memory was 182.0MB in the beginning and 157.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-16 14:50:09,528 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.77ms. Allocated memory is still 234.9MB. Free memory was 157.4MB in the beginning and 153.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 14:50:09,528 INFO L158 Benchmark]: Boogie Preprocessor took 79.19ms. Allocated memory is still 234.9MB. Free memory was 153.2MB in the beginning and 143.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 14:50:09,528 INFO L158 Benchmark]: RCFGBuilder took 8031.83ms. Allocated memory is still 234.9MB. Free memory was 143.7MB in the beginning and 196.2MB in the end (delta: -52.4MB). Peak memory consumption was 56.4MB. Max. memory is 8.0GB. [2023-12-16 14:50:09,528 INFO L158 Benchmark]: TraceAbstraction took 65799.45ms. Allocated memory is still 234.9MB. Free memory was 195.3MB in the beginning and 138.8MB in the end (delta: 56.6MB). Peak memory consumption was 56.3MB. Max. memory is 8.0GB. [2023-12-16 14:50:09,529 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 175.1MB. Free memory is still 122.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 332.71ms. Allocated memory is still 234.9MB. Free memory was 182.0MB in the beginning and 157.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.77ms. Allocated memory is still 234.9MB. Free memory was 157.4MB in the beginning and 153.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 79.19ms. Allocated memory is still 234.9MB. Free memory was 153.2MB in the beginning and 143.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 8031.83ms. Allocated memory is still 234.9MB. Free memory was 143.7MB in the beginning and 196.2MB in the end (delta: -52.4MB). Peak memory consumption was 56.4MB. Max. memory is 8.0GB. * TraceAbstraction took 65799.45ms. Allocated memory is still 234.9MB. Free memory was 195.3MB in the beginning and 138.8MB in the end (delta: 56.6MB). Peak memory consumption was 56.3MB. 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 executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 138 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.7s, OverallIterations: 3, TraceHistogramMax: 43, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 37.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 534 SdHoareTripleChecker+Valid, 34.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 534 mSDsluCounter, 1084 SdHoareTripleChecker+Invalid, 34.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 443 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 407 IncrementalHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 641 mSDtfsCounter, 407 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2157 GetRequests, 2130 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=269occurred in iteration=2, 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 21.4s InterpolantComputationTime, 1387 NumberOfCodeBlocks, 1387 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1382 ConstructedInterpolants, 0 QuantifiedInterpolants, 8211 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2354 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 17709/18060 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