/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 20:31:47,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 20:31:47,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 20:31:47,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 20:31:47,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 20:31:47,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 20:31:47,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 20:31:47,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 20:31:47,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 20:31:47,561 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 20:31:47,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 20:31:47,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 20:31:47,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 20:31:47,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 20:31:47,566 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 20:31:47,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 20:31:47,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 20:31:47,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 20:31:47,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 20:31:47,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 20:31:47,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 20:31:47,571 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 20:31:47,571 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 20:31:47,571 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 20:31:47,571 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 20:31:47,572 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 20:31:47,572 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 20:31:47,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 20:31:47,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 20:31:47,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 20:31:47,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 20:31:47,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 20:31:47,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 20:31:47,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 20:31:47,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 20:31:47,575 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 20:31:47,576 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 20:31:47,576 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 20:31:47,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 20:31:47,577 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 20:31:47,577 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 20:31:47,577 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 20:31:47,577 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-01 20:31:47,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 20:31:47,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 20:31:47,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 20:31:47,899 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 20:31:47,899 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 20:31:47,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-01 20:31:49,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 20:31:49,698 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 20:31:49,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-01 20:31:49,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1c41a2e3/8217a65201874f44be19965a21339310/FLAG9d1ea892f [2024-11-01 20:31:50,005 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1c41a2e3/8217a65201874f44be19965a21339310 [2024-11-01 20:31:50,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 20:31:50,008 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 20:31:50,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 20:31:50,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 20:31:50,013 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 20:31:50,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2962950d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50, skipping insertion in model container [2024-11-01 20:31:50,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,065 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 20:31:50,271 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c[1270,1283] [2024-11-01 20:31:50,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 20:31:50,531 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 20:31:50,544 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c[1270,1283] [2024-11-01 20:31:50,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 20:31:50,670 INFO L204 MainTranslator]: Completed translation [2024-11-01 20:31:50,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50 WrapperNode [2024-11-01 20:31:50,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 20:31:50,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 20:31:50,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 20:31:50,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 20:31:50,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,802 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 953 [2024-11-01 20:31:50,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 20:31:50,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 20:31:50,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 20:31:50,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 20:31:50,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,824 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,891 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 4, 4]. [2024-11-01 20:31:50,895 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,896 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,930 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,945 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 20:31:50,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 20:31:50,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 20:31:50,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 20:31:50,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (1/1) ... [2024-11-01 20:31:50,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 20:31:50,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 20:31:50,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-01 20:31:50,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-01 20:31:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 20:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-01 20:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-01 20:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-01 20:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 20:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-01 20:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-01 20:31:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 20:31:51,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 20:31:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-01 20:31:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 20:31:51,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 20:31:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-01 20:31:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-01 20:31:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-01 20:31:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-01 20:31:51,249 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 20:31:51,251 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 20:31:52,023 INFO L? ?]: Removed 675 outVars from TransFormulas that were not future-live. [2024-11-01 20:31:52,024 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 20:31:52,036 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 20:31:52,037 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-01 20:31:52,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:31:52 BoogieIcfgContainer [2024-11-01 20:31:52,038 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 20:31:52,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 20:31:52,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 20:31:52,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 20:31:52,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 08:31:50" (1/3) ... [2024-11-01 20:31:52,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b748ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:31:52, skipping insertion in model container [2024-11-01 20:31:52,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:50" (2/3) ... [2024-11-01 20:31:52,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b748ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:31:52, skipping insertion in model container [2024-11-01 20:31:52,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:31:52" (3/3) ... [2024-11-01 20:31:52,049 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-01 20:31:52,066 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 20:31:52,066 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 20:31:52,130 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 20:31:52,137 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1238ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 20:31:52,138 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 20:31:52,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-01 20:31:52,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:52,150 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:52,150 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:52,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:52,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1919498836, now seen corresponding path program 1 times [2024-11-01 20:31:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:52,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523185322] [2024-11-01 20:31:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:52,167 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:52,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:52,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:52,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-01 20:31:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:52,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 20:31:52,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-01 20:31:52,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-01 20:31:52,655 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:52,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523185322] [2024-11-01 20:31:52,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [523185322] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:52,655 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:52,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-01 20:31:52,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143914079] [2024-11-01 20:31:52,662 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:52,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 20:31:52,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 20:31:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 20:31:52,700 INFO L87 Difference]: Start difference. First operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-01 20:31:52,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:52,722 INFO L93 Difference]: Finished difference Result 77 states and 117 transitions. [2024-11-01 20:31:52,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 20:31:52,724 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2024-11-01 20:31:52,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:52,730 INFO L225 Difference]: With dead ends: 77 [2024-11-01 20:31:52,730 INFO L226 Difference]: Without dead ends: 39 [2024-11-01 20:31:52,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 20:31:52,735 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:52,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:52,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-01 20:31:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-01 20:31:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-01 20:31:52,767 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 39 [2024-11-01 20:31:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:52,767 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-01 20:31:52,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-01 20:31:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-01 20:31:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-01 20:31:52,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:52,769 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:52,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:52,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:52,971 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:52,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:52,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1633554172, now seen corresponding path program 1 times [2024-11-01 20:31:52,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:52,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368151728] [2024-11-01 20:31:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:52,972 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:52,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:52,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:52,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-01 20:31:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:53,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:53,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:53,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:53,408 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:53,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368151728] [2024-11-01 20:31:53,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1368151728] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:53,409 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:53,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:53,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80014286] [2024-11-01 20:31:53,409 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:53,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:53,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:53,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:53,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:53,414 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:53,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:53,448 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2024-11-01 20:31:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:53,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 39 [2024-11-01 20:31:53,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:53,450 INFO L225 Difference]: With dead ends: 77 [2024-11-01 20:31:53,450 INFO L226 Difference]: Without dead ends: 42 [2024-11-01 20:31:53,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:53,452 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:53,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 135 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:53,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-01 20:31:53,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-01 20:31:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2024-11-01 20:31:53,464 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 39 [2024-11-01 20:31:53,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:53,465 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2024-11-01 20:31:53,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:53,466 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2024-11-01 20:31:53,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-01 20:31:53,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:53,469 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:53,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-01 20:31:53,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:53,671 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:53,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:53,671 INFO L85 PathProgramCache]: Analyzing trace with hash -682782464, now seen corresponding path program 1 times [2024-11-01 20:31:53,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:53,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022366329] [2024-11-01 20:31:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:53,672 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:53,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:53,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:53,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-01 20:31:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:54,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:31:54,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:54,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:54,129 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:54,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022366329] [2024-11-01 20:31:54,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2022366329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:54,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:54,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:31:54,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544876580] [2024-11-01 20:31:54,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:54,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:31:54,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:54,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:31:54,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:54,131 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:54,229 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2024-11-01 20:31:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 20:31:54,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 43 [2024-11-01 20:31:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:54,234 INFO L225 Difference]: With dead ends: 85 [2024-11-01 20:31:54,234 INFO L226 Difference]: Without dead ends: 50 [2024-11-01 20:31:54,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-01 20:31:54,235 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:54,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 223 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 20:31:54,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-01 20:31:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-01 20:31:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-01 20:31:54,246 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 43 [2024-11-01 20:31:54,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:54,246 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-01 20:31:54,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:54,246 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-01 20:31:54,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-01 20:31:54,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:54,248 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:54,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:54,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:54,453 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:54,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:54,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1659549432, now seen corresponding path program 2 times [2024-11-01 20:31:54,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:54,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216132405] [2024-11-01 20:31:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:54,454 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:54,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:54,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:54,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-01 20:31:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:54,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-01 20:31:54,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:54,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:55,045 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:55,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216132405] [2024-11-01 20:31:55,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [216132405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:55,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:55,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-01 20:31:55,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028484700] [2024-11-01 20:31:55,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:55,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-01 20:31:55,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:55,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-01 20:31:55,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-01 20:31:55,050 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:55,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:55,199 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2024-11-01 20:31:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 20:31:55,201 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 51 [2024-11-01 20:31:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:55,201 INFO L225 Difference]: With dead ends: 89 [2024-11-01 20:31:55,202 INFO L226 Difference]: Without dead ends: 54 [2024-11-01 20:31:55,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-01 20:31:55,204 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:55,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 355 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 20:31:55,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-01 20:31:55,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-01 20:31:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-11-01 20:31:55,214 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2024-11-01 20:31:55,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:55,216 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-11-01 20:31:55,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:55,216 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-11-01 20:31:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-01 20:31:55,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:55,217 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:55,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-01 20:31:55,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:55,418 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:55,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:55,419 INFO L85 PathProgramCache]: Analyzing trace with hash 488258804, now seen corresponding path program 3 times [2024-11-01 20:31:55,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:55,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112028225] [2024-11-01 20:31:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:55,419 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:55,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:55,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:55,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-01 20:31:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:55,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:55,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:55,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:55,782 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:55,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112028225] [2024-11-01 20:31:55,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1112028225] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:55,782 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:55,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:55,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830388000] [2024-11-01 20:31:55,782 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:55,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:55,784 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:55,809 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2024-11-01 20:31:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:55,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 55 [2024-11-01 20:31:55,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:55,813 INFO L225 Difference]: With dead ends: 89 [2024-11-01 20:31:55,813 INFO L226 Difference]: Without dead ends: 57 [2024-11-01 20:31:55,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:55,814 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:55,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 90 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:55,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-01 20:31:55,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-01 20:31:55,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-01 20:31:55,825 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 55 [2024-11-01 20:31:55,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:55,825 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-01 20:31:55,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-01 20:31:55,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-01 20:31:55,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:55,827 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:55,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:56,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:56,028 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:56,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:56,028 INFO L85 PathProgramCache]: Analyzing trace with hash -526560144, now seen corresponding path program 1 times [2024-11-01 20:31:56,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:56,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224169624] [2024-11-01 20:31:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:56,029 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:56,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:56,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:56,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-01 20:31:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:56,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:31:56,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:56,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:56,441 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:56,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224169624] [2024-11-01 20:31:56,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1224169624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:56,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:56,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:31:56,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762951743] [2024-11-01 20:31:56,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:56,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:31:56,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:56,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:31:56,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:56,444 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:56,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:56,522 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2024-11-01 20:31:56,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 20:31:56,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 59 [2024-11-01 20:31:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:56,527 INFO L225 Difference]: With dead ends: 97 [2024-11-01 20:31:56,527 INFO L226 Difference]: Without dead ends: 65 [2024-11-01 20:31:56,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-01 20:31:56,528 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:56,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 176 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:56,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-01 20:31:56,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-01 20:31:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 58 states have internal predecessors, (65), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2024-11-01 20:31:56,535 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 59 [2024-11-01 20:31:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:56,535 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2024-11-01 20:31:56,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:56,535 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2024-11-01 20:31:56,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-01 20:31:56,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:56,536 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:56,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-01 20:31:56,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:56,737 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:56,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:56,738 INFO L85 PathProgramCache]: Analyzing trace with hash -47044248, now seen corresponding path program 2 times [2024-11-01 20:31:56,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:56,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691961696] [2024-11-01 20:31:56,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:56,738 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:56,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:56,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-01 20:31:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:57,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-01 20:31:57,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:57,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:57,305 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:57,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691961696] [2024-11-01 20:31:57,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1691961696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:57,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:57,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-01 20:31:57,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835410] [2024-11-01 20:31:57,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:57,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-01 20:31:57,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:57,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-01 20:31:57,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-01 20:31:57,307 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:57,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:57,431 INFO L93 Difference]: Finished difference Result 101 states and 121 transitions. [2024-11-01 20:31:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 20:31:57,433 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 67 [2024-11-01 20:31:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:57,434 INFO L225 Difference]: With dead ends: 101 [2024-11-01 20:31:57,434 INFO L226 Difference]: Without dead ends: 69 [2024-11-01 20:31:57,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-01 20:31:57,435 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:57,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 434 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 20:31:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-01 20:31:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-01 20:31:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 62 states have internal predecessors, (69), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2024-11-01 20:31:57,441 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 67 [2024-11-01 20:31:57,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:57,441 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2024-11-01 20:31:57,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2024-11-01 20:31:57,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-01 20:31:57,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:57,443 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:57,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:57,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:57,644 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:57,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:57,645 INFO L85 PathProgramCache]: Analyzing trace with hash -515774748, now seen corresponding path program 3 times [2024-11-01 20:31:57,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:57,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051970691] [2024-11-01 20:31:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:57,645 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:57,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:57,647 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:57,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-01 20:31:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:57,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-01 20:31:58,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:58,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-01 20:31:58,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2024-11-01 20:31:58,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:31:58,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2024-11-01 20:31:58,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:31:58,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2024-11-01 20:31:59,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:31:59,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2024-11-01 20:31:59,348 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:31:59,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 88 [2024-11-01 20:31:59,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:31:59,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 103 [2024-11-01 20:32:00,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:00,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 118 [2024-11-01 20:32:00,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-01 20:32:01,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2024-11-01 20:32:01,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:01,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2024-11-01 20:32:02,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:02,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2024-11-01 20:32:02,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:02,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2024-11-01 20:32:03,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:03,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 88 [2024-11-01 20:32:03,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:03,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 103 [2024-11-01 20:32:04,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:04,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 118 [2024-11-01 20:32:47,658 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-01 20:32:47,659 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:47,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051970691] [2024-11-01 20:32:47,660 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-01 20:32:47,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-01 20:32:47,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-01 20:32:47,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:47,861 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:947) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:553) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:290) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 44 more [2024-11-01 20:32:47,865 INFO L158 Benchmark]: Toolchain (without parser) took 57856.97ms. Allocated memory was 201.3MB in the beginning and 394.3MB in the end (delta: 192.9MB). Free memory was 164.7MB in the beginning and 182.8MB in the end (delta: -18.1MB). Peak memory consumption was 175.4MB. Max. memory is 8.0GB. [2024-11-01 20:32:47,865 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 178.2MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-01 20:32:47,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 664.12ms. Allocated memory is still 201.3MB. Free memory was 164.7MB in the beginning and 127.9MB in the end (delta: 36.8MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2024-11-01 20:32:47,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 129.04ms. Allocated memory is still 201.3MB. Free memory was 127.9MB in the beginning and 120.2MB in the end (delta: 7.7MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2024-11-01 20:32:47,867 INFO L158 Benchmark]: Boogie Preprocessor took 154.27ms. Allocated memory is still 201.3MB. Free memory was 120.2MB in the beginning and 169.5MB in the end (delta: -49.3MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. [2024-11-01 20:32:47,868 INFO L158 Benchmark]: RCFGBuilder took 1080.08ms. Allocated memory was 201.3MB in the beginning and 261.1MB in the end (delta: 59.8MB). Free memory was 168.9MB in the beginning and 203.5MB in the end (delta: -34.6MB). Peak memory consumption was 82.9MB. Max. memory is 8.0GB. [2024-11-01 20:32:47,869 INFO L158 Benchmark]: TraceAbstraction took 55822.86ms. Allocated memory was 261.1MB in the beginning and 394.3MB in the end (delta: 133.2MB). Free memory was 202.5MB in the beginning and 182.8MB in the end (delta: 19.6MB). Peak memory consumption was 152.8MB. Max. memory is 8.0GB. [2024-11-01 20:32:47,872 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 178.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 664.12ms. Allocated memory is still 201.3MB. Free memory was 164.7MB in the beginning and 127.9MB in the end (delta: 36.8MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 129.04ms. Allocated memory is still 201.3MB. Free memory was 127.9MB in the beginning and 120.2MB in the end (delta: 7.7MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 154.27ms. Allocated memory is still 201.3MB. Free memory was 120.2MB in the beginning and 169.5MB in the end (delta: -49.3MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. * RCFGBuilder took 1080.08ms. Allocated memory was 201.3MB in the beginning and 261.1MB in the end (delta: 59.8MB). Free memory was 168.9MB in the beginning and 203.5MB in the end (delta: -34.6MB). Peak memory consumption was 82.9MB. Max. memory is 8.0GB. * TraceAbstraction took 55822.86ms. Allocated memory was 261.1MB in the beginning and 394.3MB in the end (delta: 133.2MB). Free memory was 202.5MB in the beginning and 182.8MB in the end (delta: 19.6MB). Peak memory consumption was 152.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...