/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/array-examples/standard_copy2_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:45:19,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:45:19,568 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 06:45:19,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:45:19,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:45:19,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:45:19,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:45:19,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:45:19,600 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:45:19,602 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:45:19,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:45:19,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:45:19,603 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:45:19,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:45:19,604 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:45:19,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:45:19,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:45:19,605 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:45:19,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:45:19,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:45:19,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:45:19,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:45:19,606 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:45:19,606 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 06:45:19,606 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 06:45:19,606 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:45:19,606 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 06:45:19,607 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:45:19,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:45:19,607 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:45:19,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:45:19,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:45:19,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:45:19,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:45:19,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:45:19,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:45:19,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:45:19,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:45:19,608 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 06:45:19,608 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 06:45:19,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:45:19,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:45:19,616 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:45:19,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:45:19,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:45:19,616 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 06:45:19,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 06:45:19,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:45:19,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:45:19,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:45:19,816 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:45:19,817 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:45:19,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy2_ground-1.i [2023-12-16 06:45:20,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:45:20,969 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:45:20,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy2_ground-1.i [2023-12-16 06:45:20,975 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ce8227b/0b5d18ba141540198e5282ae9a515329/FLAGeb5ec5e05 [2023-12-16 06:45:20,987 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ce8227b/0b5d18ba141540198e5282ae9a515329 [2023-12-16 06:45:20,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:45:20,990 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:45:20,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:45:20,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:45:20,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:45:20,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:45:20" (1/1) ... [2023-12-16 06:45:20,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77654fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:20, skipping insertion in model container [2023-12-16 06:45:20,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:45:20" (1/1) ... [2023-12-16 06:45:21,013 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:45:21,125 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy2_ground-1.i[816,829] [2023-12-16 06:45:21,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:45:21,142 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:45:21,149 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy2_ground-1.i[816,829] [2023-12-16 06:45:21,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:45:21,169 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:45:21,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21 WrapperNode [2023-12-16 06:45:21,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:45:21,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:45:21,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:45:21,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:45:21,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,197 INFO L138 Inliner]: procedures = 18, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2023-12-16 06:45:21,198 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:45:21,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:45:21,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:45:21,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:45:21,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,208 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,215 INFO L175 MemorySlicer]: Split 10 memory accesses to 4 slices as follows [2, 3, 2, 3]. 30 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 2]. [2023-12-16 06:45:21,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,223 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:45:21,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:45:21,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:45:21,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:45:21,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (1/1) ... [2023-12-16 06:45:21,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:45:21,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:45:21,249 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 06:45:21,255 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 06:45:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:45:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 06:45:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 06:45:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 06:45:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 06:45:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 06:45:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 06:45:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 06:45:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 06:45:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-16 06:45:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:45:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:45:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 06:45:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 06:45:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 06:45:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 06:45:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-16 06:45:21,335 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:45:21,337 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:45:21,468 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:45:21,500 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:45:21,500 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-16 06:45:21,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:45:21 BoogieIcfgContainer [2023-12-16 06:45:21,500 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:45:21,502 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:45:21,502 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:45:21,504 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:45:21,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:45:20" (1/3) ... [2023-12-16 06:45:21,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179e1cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:45:21, skipping insertion in model container [2023-12-16 06:45:21,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:45:21" (2/3) ... [2023-12-16 06:45:21,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179e1cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:45:21, skipping insertion in model container [2023-12-16 06:45:21,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:45:21" (3/3) ... [2023-12-16 06:45:21,506 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy2_ground-1.i [2023-12-16 06:45:21,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:45:21,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:45:21,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:45:21,580 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;@350c676f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:45:21,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:45:21,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:21,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 06:45:21,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:21,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:21,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:21,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:21,595 INFO L85 PathProgramCache]: Analyzing trace with hash 521588054, now seen corresponding path program 1 times [2023-12-16 06:45:21,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:21,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895604093] [2023-12-16 06:45:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:45:21,604 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 06:45:21,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:21,606 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 06:45:21,646 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 06:45:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:45:21,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:45:21,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:45:21,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:45:21,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:21,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895604093] [2023-12-16 06:45:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895604093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:45:21,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:45:21,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:45:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145708116] [2023-12-16 06:45:21,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:45:21,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:45:21,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:45:21,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:45:21,744 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:21,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:21,800 INFO L93 Difference]: Finished difference Result 27 states and 43 transitions. [2023-12-16 06:45:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:45:21,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-16 06:45:21,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:21,808 INFO L225 Difference]: With dead ends: 27 [2023-12-16 06:45:21,808 INFO L226 Difference]: Without dead ends: 13 [2023-12-16 06:45:21,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 06:45:21,814 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:21,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:45:21,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-16 06:45:21,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-16 06:45:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-12-16 06:45:21,853 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 10 [2023-12-16 06:45:21,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:21,854 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-12-16 06:45:21,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:21,855 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2023-12-16 06:45:21,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-16 06:45:21,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:21,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:21,859 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 06:45:22,060 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 06:45:22,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:22,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:22,061 INFO L85 PathProgramCache]: Analyzing trace with hash -666862215, now seen corresponding path program 1 times [2023-12-16 06:45:22,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:22,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524563926] [2023-12-16 06:45:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:45:22,062 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 06:45:22,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:22,066 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 06:45:22,068 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 06:45:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:45:22,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:45:22,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:45:22,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:45:22,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:22,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524563926] [2023-12-16 06:45:22,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524563926] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:22,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:22,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-16 06:45:22,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186505306] [2023-12-16 06:45:22,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:22,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:45:22,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:22,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:45:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:45:22,163 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:22,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:22,230 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2023-12-16 06:45:22,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:45:22,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-16 06:45:22,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:22,232 INFO L225 Difference]: With dead ends: 26 [2023-12-16 06:45:22,232 INFO L226 Difference]: Without dead ends: 16 [2023-12-16 06:45:22,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:45:22,233 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:22,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:45:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-16 06:45:22,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-16 06:45:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-12-16 06:45:22,240 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2023-12-16 06:45:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:22,240 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-12-16 06:45:22,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-12-16 06:45:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 06:45:22,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:22,241 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:22,246 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 06:45:22,442 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 06:45:22,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:22,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash -200065514, now seen corresponding path program 2 times [2023-12-16 06:45:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:22,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401997072] [2023-12-16 06:45:22,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:45:22,446 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 06:45:22,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:22,447 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 06:45:22,450 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 06:45:22,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 06:45:22,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:22,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:45:22,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 06:45:22,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:45:22,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:22,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401997072] [2023-12-16 06:45:22,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401997072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:45:22,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:45:22,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:45:22,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63114396] [2023-12-16 06:45:22,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:45:22,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:45:22,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:22,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:45:22,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:45:22,501 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:22,536 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2023-12-16 06:45:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:45:22,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-16 06:45:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:22,537 INFO L225 Difference]: With dead ends: 26 [2023-12-16 06:45:22,537 INFO L226 Difference]: Without dead ends: 18 [2023-12-16 06:45:22,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 06:45:22,538 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:22,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:45:22,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-16 06:45:22,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-16 06:45:22,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-12-16 06:45:22,541 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 14 [2023-12-16 06:45:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:22,542 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-12-16 06:45:22,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-12-16 06:45:22,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 06:45:22,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:22,542 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:22,560 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 (4)] Ended with exit code 0 [2023-12-16 06:45:22,744 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 06:45:22,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:22,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1685724712, now seen corresponding path program 1 times [2023-12-16 06:45:22,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:22,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231659794] [2023-12-16 06:45:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:45:22,746 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 06:45:22,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:22,747 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 06:45:22,761 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 06:45:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:45:22,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:45:22,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:45:22,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:45:22,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:22,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231659794] [2023-12-16 06:45:22,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231659794] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:22,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:22,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 06:45:22,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018352540] [2023-12-16 06:45:22,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:22,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 06:45:22,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:22,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 06:45:22,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:45:22,962 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:23,191 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-12-16 06:45:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 06:45:23,192 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-16 06:45:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:23,192 INFO L225 Difference]: With dead ends: 36 [2023-12-16 06:45:23,192 INFO L226 Difference]: Without dead ends: 24 [2023-12-16 06:45:23,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:45:23,193 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:23,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:45:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-16 06:45:23,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-16 06:45:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-12-16 06:45:23,197 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2023-12-16 06:45:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:23,197 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-12-16 06:45:23,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,197 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-12-16 06:45:23,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 06:45:23,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:23,198 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:23,204 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 06:45:23,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:45:23,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:23,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash -179107000, now seen corresponding path program 2 times [2023-12-16 06:45:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:23,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555051209] [2023-12-16 06:45:23,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:45:23,406 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 06:45:23,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:23,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:45:23,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 06:45:23,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:45:23,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:23,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:45:23,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-16 06:45:23,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-16 06:45:23,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:23,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555051209] [2023-12-16 06:45:23,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555051209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:23,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:23,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 06:45:23,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424535826] [2023-12-16 06:45:23,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:23,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:45:23,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:23,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:45:23,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:45:23,553 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:23,637 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-12-16 06:45:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:45:23,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-16 06:45:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:23,640 INFO L225 Difference]: With dead ends: 39 [2023-12-16 06:45:23,640 INFO L226 Difference]: Without dead ends: 30 [2023-12-16 06:45:23,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:45:23,641 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:23,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:45:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-16 06:45:23,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-16 06:45:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-12-16 06:45:23,645 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2023-12-16 06:45:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:23,645 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-12-16 06:45:23,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-12-16 06:45:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 06:45:23,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:23,646 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:23,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 06:45:23,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:45:23,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:23,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1123286858, now seen corresponding path program 3 times [2023-12-16 06:45:23,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:23,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17031580] [2023-12-16 06:45:23,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:45:23,853 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 06:45:23,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:23,854 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:45:23,857 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 (7)] Waiting until timeout for monitored process [2023-12-16 06:45:23,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 06:45:23,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:23,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:45:23,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-16 06:45:24,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-16 06:45:24,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:24,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17031580] [2023-12-16 06:45:24,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17031580] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:24,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:24,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 06:45:24,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287645559] [2023-12-16 06:45:24,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:24,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 06:45:24,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:24,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 06:45:24,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:45:24,079 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:24,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:24,358 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2023-12-16 06:45:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 06:45:24,359 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-16 06:45:24,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:24,360 INFO L225 Difference]: With dead ends: 54 [2023-12-16 06:45:24,360 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 06:45:24,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:45:24,361 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:24,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:45:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 06:45:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-16 06:45:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2023-12-16 06:45:24,366 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 28 [2023-12-16 06:45:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:24,366 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2023-12-16 06:45:24,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:24,366 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2023-12-16 06:45:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 06:45:24,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:24,367 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:24,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 06:45:24,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:45:24,573 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:24,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:24,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1694892810, now seen corresponding path program 4 times [2023-12-16 06:45:24,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:24,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342088191] [2023-12-16 06:45:24,574 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 06:45:24,574 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 06:45:24,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:24,575 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:45:24,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 06:45:24,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 06:45:24,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:24,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 06:45:24,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-16 06:45:24,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-16 06:45:25,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:25,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342088191] [2023-12-16 06:45:25,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342088191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:25,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:25,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-16 06:45:25,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245058103] [2023-12-16 06:45:25,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:25,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 06:45:25,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 06:45:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 06:45:25,109 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:26,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:26,092 INFO L93 Difference]: Finished difference Result 84 states and 101 transitions. [2023-12-16 06:45:26,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 06:45:26,093 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-16 06:45:26,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:26,093 INFO L225 Difference]: With dead ends: 84 [2023-12-16 06:45:26,093 INFO L226 Difference]: Without dead ends: 54 [2023-12-16 06:45:26,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 06:45:26,094 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:26,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:45:26,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-16 06:45:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-16 06:45:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2023-12-16 06:45:26,100 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 40 [2023-12-16 06:45:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:26,100 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2023-12-16 06:45:26,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:26,100 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2023-12-16 06:45:26,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 06:45:26,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:26,101 INFO L195 NwaCegarLoop]: trace histogram [22, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:26,120 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 (8)] Forceful destruction successful, exit code 0 [2023-12-16 06:45:26,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:45:26,323 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:26,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash 108707638, now seen corresponding path program 5 times [2023-12-16 06:45:26,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:26,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3988863] [2023-12-16 06:45:26,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 06:45:26,324 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 06:45:26,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:26,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:45:26,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 06:45:26,962 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-16 06:45:26,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:26,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 06:45:26,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-16 06:45:27,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-16 06:45:28,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:28,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3988863] [2023-12-16 06:45:28,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3988863] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:28,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:28,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-16 06:45:28,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823769216] [2023-12-16 06:45:28,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:28,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 06:45:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:28,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 06:45:28,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 06:45:28,400 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:34,333 INFO L93 Difference]: Finished difference Result 108 states and 137 transitions. [2023-12-16 06:45:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-16 06:45:34,333 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 06:45:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:34,334 INFO L225 Difference]: With dead ends: 108 [2023-12-16 06:45:34,334 INFO L226 Difference]: Without dead ends: 78 [2023-12-16 06:45:34,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 06:45:34,338 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:34,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 226 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 06:45:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-16 06:45:34,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-16 06:45:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.051948051948052) internal successors, (81), 77 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2023-12-16 06:45:34,353 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 52 [2023-12-16 06:45:34,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:34,353 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2023-12-16 06:45:34,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2023-12-16 06:45:34,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 06:45:34,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:34,354 INFO L195 NwaCegarLoop]: trace histogram [46, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:34,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 06:45:34,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:45:34,567 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:34,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:34,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1348983882, now seen corresponding path program 6 times [2023-12-16 06:45:34,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:34,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632407935] [2023-12-16 06:45:34,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 06:45:34,568 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 06:45:34,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:34,569 INFO L229 MonitoredProcess]: Starting monitored process 10 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 06:45:34,571 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 (10)] Waiting until timeout for monitored process [2023-12-16 06:45:35,138 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-16 06:45:35,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:35,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 06:45:35,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2023-12-16 06:45:35,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2023-12-16 06:45:35,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:35,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632407935] [2023-12-16 06:45:35,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632407935] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:35,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:35,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-16 06:45:35,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755830370] [2023-12-16 06:45:35,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:35,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 06:45:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 06:45:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 06:45:35,503 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:36,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:36,630 INFO L93 Difference]: Finished difference Result 120 states and 148 transitions. [2023-12-16 06:45:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 06:45:36,630 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-16 06:45:36,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:36,631 INFO L225 Difference]: With dead ends: 120 [2023-12-16 06:45:36,631 INFO L226 Difference]: Without dead ends: 102 [2023-12-16 06:45:36,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 06:45:36,632 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:36,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 06:45:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-16 06:45:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-16 06:45:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 101 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2023-12-16 06:45:36,639 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 76 [2023-12-16 06:45:36,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:36,639 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2023-12-16 06:45:36,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:36,639 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2023-12-16 06:45:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 06:45:36,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:36,641 INFO L195 NwaCegarLoop]: trace histogram [46, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:36,653 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 (10)] Forceful destruction successful, exit code 0 [2023-12-16 06:45:36,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 06:45:36,849 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:36,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash 478211126, now seen corresponding path program 7 times [2023-12-16 06:45:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:36,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457760195] [2023-12-16 06:45:36,850 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 06:45:36,850 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 06:45:36,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:36,851 INFO L229 MonitoredProcess]: Starting monitored process 11 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 06:45:36,854 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 (11)] Waiting until timeout for monitored process [2023-12-16 06:45:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:45:37,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 06:45:37,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-12-16 06:45:38,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-12-16 06:45:42,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:42,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457760195] [2023-12-16 06:45:42,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457760195] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:42,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:42,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-16 06:45:42,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159480914] [2023-12-16 06:45:42,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:42,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-16 06:45:42,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:42,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-16 06:45:42,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-16 06:45:42,672 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand has 96 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 95 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:46:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:46:30,135 INFO L93 Difference]: Finished difference Result 204 states and 257 transitions. [2023-12-16 06:46:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-16 06:46:30,135 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 95 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-16 06:46:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:46:30,136 INFO L225 Difference]: With dead ends: 204 [2023-12-16 06:46:30,136 INFO L226 Difference]: Without dead ends: 150 [2023-12-16 06:46:30,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-16 06:46:30,140 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:46:30,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 433 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-16 06:46:30,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-16 06:46:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-12-16 06:46:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0268456375838926) internal successors, (153), 149 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:46:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2023-12-16 06:46:30,150 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 100 [2023-12-16 06:46:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:46:30,150 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2023-12-16 06:46:30,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 95 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:46:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2023-12-16 06:46:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 06:46:30,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:46:30,152 INFO L195 NwaCegarLoop]: trace histogram [94, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:46:30,166 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 (11)] Ended with exit code 0 [2023-12-16 06:46:30,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 06:46:30,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:46:30,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:46:30,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1126157002, now seen corresponding path program 8 times [2023-12-16 06:46:30,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:46:30,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312730164] [2023-12-16 06:46:30,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:46:30,363 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 06:46:30,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:46:30,364 INFO L229 MonitoredProcess]: Starting monitored process 12 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 06:46:30,368 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 (12)] Waiting until timeout for monitored process [2023-12-16 06:46:31,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:46:31,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:46:31,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-16 06:46:31,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:46:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-12-16 06:46:34,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 06:46:36,986 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:46:36,996 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 (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:46:37,001 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 (12)] Forceful destruction successful, exit code 0 [2023-12-16 06:46:37,020 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 06:46:37,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 06:46:37,187 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 149 with TraceHistMax 94,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 121 known predicates. [2023-12-16 06:46:37,190 INFO L445 BasicCegarLoop]: Path program histogram: [8, 2, 1] [2023-12-16 06:46:37,193 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:46:37,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:46:37 BoogieIcfgContainer [2023-12-16 06:46:37,194 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:46:37,195 INFO L158 Benchmark]: Toolchain (without parser) took 76204.70ms. Allocated memory is still 295.7MB. Free memory was 244.7MB in the beginning and 194.1MB in the end (delta: 50.6MB). Peak memory consumption was 52.2MB. Max. memory is 8.0GB. [2023-12-16 06:46:37,195 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 215.0MB. Free memory is still 164.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:46:37,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.20ms. Allocated memory is still 295.7MB. Free memory was 244.3MB in the beginning and 233.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 06:46:37,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.90ms. Allocated memory is still 295.7MB. Free memory was 233.1MB in the beginning and 231.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:46:37,195 INFO L158 Benchmark]: Boogie Preprocessor took 27.36ms. Allocated memory is still 295.7MB. Free memory was 231.4MB in the beginning and 229.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:46:37,195 INFO L158 Benchmark]: RCFGBuilder took 274.38ms. Allocated memory is still 295.7MB. Free memory was 229.0MB in the beginning and 213.9MB in the end (delta: 15.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 06:46:37,196 INFO L158 Benchmark]: TraceAbstraction took 75692.55ms. Allocated memory is still 295.7MB. Free memory was 213.2MB in the beginning and 194.1MB in the end (delta: 19.1MB). Peak memory consumption was 20.7MB. Max. memory is 8.0GB. [2023-12-16 06:46:37,196 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 215.0MB. Free memory is still 164.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 177.20ms. Allocated memory is still 295.7MB. Free memory was 244.3MB in the beginning and 233.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.90ms. Allocated memory is still 295.7MB. Free memory was 233.1MB in the beginning and 231.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.36ms. Allocated memory is still 295.7MB. Free memory was 231.4MB in the beginning and 229.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 274.38ms. Allocated memory is still 295.7MB. Free memory was 229.0MB in the beginning and 213.9MB in the end (delta: 15.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 75692.55ms. Allocated memory is still 295.7MB. Free memory was 213.2MB in the beginning and 194.1MB in the end (delta: 19.1MB). Peak memory consumption was 20.7MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was analyzing trace of length 149 with TraceHistMax 94,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 121 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 75.6s, OverallIterations: 11, TraceHistogramMax: 94, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 56.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 1065 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 964 mSDsCounter, 207 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3957 IncrementalHoareTripleChecker+Invalid, 4164 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 207 mSolverCounterUnsat, 101 mSDtfsCounter, 3957 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 809 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 57.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=10, InterpolantAutomatonStates: 234, 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 369 NumberOfCodeBlocks, 333 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 696 ConstructedInterpolants, 0 QuantifiedInterpolants, 1320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1956 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 3980/6912 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