/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 08:52:14,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 08:52:14,240 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-26 08:52:14,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 08:52:14,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 08:52:14,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 08:52:14,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 08:52:14,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 08:52:14,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 08:52:14,271 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 08:52:14,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 08:52:14,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 08:52:14,272 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 08:52:14,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 08:52:14,273 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 08:52:14,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 08:52:14,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 08:52:14,273 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 08:52:14,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 08:52:14,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 08:52:14,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 08:52:14,275 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 08:52:14,275 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 08:52:14,275 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 08:52:14,275 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 08:52:14,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 08:52:14,276 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 08:52:14,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 08:52:14,276 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 08:52:14,276 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 08:52:14,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 08:52:14,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 08:52:14,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 08:52:14,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 08:52:14,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 08:52:14,278 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 08:52:14,278 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 08:52:14,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 08:52:14,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 08:52:14,278 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 08:52:14,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 08:52:14,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 08:52:14,279 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 08:52:14,279 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 08:52:14,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 08:52:14,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 08:52:14,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 08:52:14,502 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 08:52:14,502 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 08:52:14,503 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c [2023-12-26 08:52:15,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 08:52:15,796 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 08:52:15,796 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c [2023-12-26 08:52:15,813 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/230896220/7173c432749f4cdb84f74689ccd50928/FLAG3f966cb9a [2023-12-26 08:52:15,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/230896220/7173c432749f4cdb84f74689ccd50928 [2023-12-26 08:52:15,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 08:52:15,830 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 08:52:15,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 08:52:15,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 08:52:15,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 08:52:15,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 08:52:15" (1/1) ... [2023-12-26 08:52:15,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cefc978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:15, skipping insertion in model container [2023-12-26 08:52:15,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 08:52:15" (1/1) ... [2023-12-26 08:52:15,890 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 08:52:16,006 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c[1335,1348] [2023-12-26 08:52:16,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 08:52:16,280 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 08:52:16,289 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c[1335,1348] [2023-12-26 08:52:16,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 08:52:16,365 INFO L206 MainTranslator]: Completed translation [2023-12-26 08:52:16,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16 WrapperNode [2023-12-26 08:52:16,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 08:52:16,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 08:52:16,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 08:52:16,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 08:52:16,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,477 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1461 [2023-12-26 08:52:16,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 08:52:16,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 08:52:16,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 08:52:16,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 08:52:16,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,493 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,528 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-26 08:52:16,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,528 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 08:52:16,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 08:52:16,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 08:52:16,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 08:52:16,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (1/1) ... [2023-12-26 08:52:16,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 08:52:16,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 08:52:16,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-26 08:52:16,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-26 08:52:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 08:52:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 08:52:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-26 08:52:16,687 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-26 08:52:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 08:52:16,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 08:52:16,910 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 08:52:16,912 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 08:52:18,216 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 08:52:18,287 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 08:52:18,287 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 08:52:18,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 08:52:18 BoogieIcfgContainer [2023-12-26 08:52:18,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 08:52:18,289 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 08:52:18,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 08:52:18,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 08:52:18,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 08:52:15" (1/3) ... [2023-12-26 08:52:18,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b82e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 08:52:18, skipping insertion in model container [2023-12-26 08:52:18,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:52:16" (2/3) ... [2023-12-26 08:52:18,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b82e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 08:52:18, skipping insertion in model container [2023-12-26 08:52:18,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 08:52:18" (3/3) ... [2023-12-26 08:52:18,294 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c [2023-12-26 08:52:18,306 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 08:52:18,306 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 08:52:18,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 08:52:18,346 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3722e23d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 08:52:18,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 08:52:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-26 08:52:18,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-26 08:52:18,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 08:52:18,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-26 08:52:18,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 08:52:18,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 08:52:18,365 INFO L85 PathProgramCache]: Analyzing trace with hash -311484247, now seen corresponding path program 1 times [2023-12-26 08:52:18,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 08:52:18,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514534075] [2023-12-26 08:52:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 08:52:18,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 08:52:18,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 08:52:18,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 08:52:18,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-26 08:52:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 08:52:18,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-26 08:52:18,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:52:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-26 08:52:18,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 08:52:18,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 08:52:18,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514534075] [2023-12-26 08:52:18,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514534075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 08:52:18,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 08:52:18,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-26 08:52:18,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908819714] [2023-12-26 08:52:18,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 08:52:18,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-26 08:52:18,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 08:52:19,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-26 08:52:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-26 08:52:19,018 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-26 08:52:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 08:52:19,077 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2023-12-26 08:52:19,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-26 08:52:19,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2023-12-26 08:52:19,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 08:52:19,090 INFO L225 Difference]: With dead ends: 33 [2023-12-26 08:52:19,091 INFO L226 Difference]: Without dead ends: 16 [2023-12-26 08:52:19,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-26 08:52:19,095 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-26 08:52:19,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-26 08:52:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-26 08:52:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-26 08:52:19,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-26 08:52:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-12-26 08:52:19,122 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 22 [2023-12-26 08:52:19,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 08:52:19,122 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-12-26 08:52:19,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-26 08:52:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-12-26 08:52:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-26 08:52:19,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 08:52:19,124 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-26 08:52:19,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-26 08:52:19,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 08:52:19,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 08:52:19,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 08:52:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1990205213, now seen corresponding path program 1 times [2023-12-26 08:52:19,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 08:52:19,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118344944] [2023-12-26 08:52:19,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 08:52:19,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 08:52:19,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 08:52:19,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 08:52:19,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-26 08:52:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 08:52:19,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-26 08:52:19,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:52:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-26 08:52:20,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 08:52:20,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 08:52:20,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118344944] [2023-12-26 08:52:20,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118344944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 08:52:20,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 08:52:20,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-26 08:52:20,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695065801] [2023-12-26 08:52:20,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 08:52:20,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 08:52:20,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 08:52:20,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 08:52:20,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 08:52:20,028 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-26 08:52:20,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 08:52:20,434 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2023-12-26 08:52:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 08:52:20,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-12-26 08:52:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 08:52:20,435 INFO L225 Difference]: With dead ends: 27 [2023-12-26 08:52:20,435 INFO L226 Difference]: Without dead ends: 25 [2023-12-26 08:52:20,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-26 08:52:20,436 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-26 08:52:20,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 33 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-26 08:52:20,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-26 08:52:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-12-26 08:52:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-26 08:52:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-12-26 08:52:20,442 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 22 [2023-12-26 08:52:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 08:52:20,443 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-12-26 08:52:20,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-26 08:52:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-12-26 08:52:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-26 08:52:20,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 08:52:20,444 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-26 08:52:20,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-26 08:52:20,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 08:52:20,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 08:52:20,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 08:52:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1333456143, now seen corresponding path program 1 times [2023-12-26 08:52:20,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 08:52:20,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168443110] [2023-12-26 08:52:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 08:52:20,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 08:52:20,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 08:52:20,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 08:52:20,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-26 08:52:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 08:52:25,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-26 08:52:25,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:52:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-26 08:52:26,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 08:52:26,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 08:52:26,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168443110] [2023-12-26 08:52:26,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168443110] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 08:52:26,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [184079370] [2023-12-26 08:52:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 08:52:26,348 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 08:52:26,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 08:52:26,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 08:52:26,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-26 08:52:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 08:52:28,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-26 08:52:28,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:52:28,573 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-26 08:52:28,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 08:52:28,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [184079370] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 08:52:28,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 08:52:28,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-26 08:52:28,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633889936] [2023-12-26 08:52:28,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 08:52:28,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-26 08:52:28,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 08:52:28,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-26 08:52:28,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-26 08:52:28,704 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-26 08:52:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 08:52:30,214 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2023-12-26 08:52:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-26 08:52:30,215 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) Word has length 43 [2023-12-26 08:52:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 08:52:30,215 INFO L225 Difference]: With dead ends: 36 [2023-12-26 08:52:30,215 INFO L226 Difference]: Without dead ends: 34 [2023-12-26 08:52:30,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-12-26 08:52:30,217 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-26 08:52:30,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 83 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-26 08:52:30,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-26 08:52:30,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2023-12-26 08:52:30,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-26 08:52:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-26 08:52:30,222 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 43 [2023-12-26 08:52:30,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 08:52:30,223 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-26 08:52:30,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-26 08:52:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-26 08:52:30,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-26 08:52:30,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 08:52:30,224 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-12-26 08:52:30,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-26 08:52:30,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-26 08:52:30,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-26 08:52:30,649 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 08:52:30,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 08:52:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1547916707, now seen corresponding path program 2 times [2023-12-26 08:52:30,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 08:52:30,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494318125] [2023-12-26 08:52:30,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 08:52:30,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 08:52:30,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 08:52:30,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 08:52:30,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-26 08:52:43,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 08:52:43,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 08:52:43,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 173 conjunts are in the unsatisfiable core [2023-12-26 08:52:43,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:52:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 64 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-26 08:52:47,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 08:52:48,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 08:52:48,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494318125] [2023-12-26 08:52:48,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494318125] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 08:52:48,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1804619350] [2023-12-26 08:52:48,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 08:52:48,005 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 08:52:48,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 08:52:48,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 08:52:48,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-26 08:52:52,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 08:52:52,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 08:52:52,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 161 conjunts are in the unsatisfiable core [2023-12-26 08:52:52,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:52:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 55 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-26 08:52:56,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 08:52:56,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1804619350] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 08:52:56,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 08:52:56,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 21 [2023-12-26 08:52:56,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305241409] [2023-12-26 08:52:56,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 08:52:56,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-26 08:52:56,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 08:52:56,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-26 08:52:56,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-12-26 08:52:56,941 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 21 states, 16 states have (on average 2.625) internal successors, (42), 21 states have internal predecessors, (42), 11 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-26 08:53:01,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 08:53:05,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 08:53:13,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 08:53:17,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 08:53:18,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 08:53:18,092 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2023-12-26 08:53:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-26 08:53:18,107 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 21 states have internal predecessors, (42), 11 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) Word has length 64 [2023-12-26 08:53:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 08:53:18,108 INFO L225 Difference]: With dead ends: 45 [2023-12-26 08:53:18,108 INFO L226 Difference]: Without dead ends: 43 [2023-12-26 08:53:18,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2023-12-26 08:53:18,109 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2023-12-26 08:53:18,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 163 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 320 Invalid, 4 Unknown, 0 Unchecked, 20.3s Time] [2023-12-26 08:53:18,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-26 08:53:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-12-26 08:53:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-26 08:53:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2023-12-26 08:53:18,135 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 64 [2023-12-26 08:53:18,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 08:53:18,136 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2023-12-26 08:53:18,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 21 states have internal predecessors, (42), 11 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-26 08:53:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2023-12-26 08:53:18,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-26 08:53:18,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 08:53:18,143 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2023-12-26 08:53:18,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-26 08:53:18,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-26 08:53:18,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 08:53:18,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 08:53:18,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 08:53:18,548 INFO L85 PathProgramCache]: Analyzing trace with hash 375264817, now seen corresponding path program 3 times [2023-12-26 08:53:18,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 08:53:18,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012387756] [2023-12-26 08:53:18,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-26 08:53:18,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 08:53:18,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 08:53:18,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 08:53:18,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-26 08:53:51,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-26 08:53:51,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 08:53:51,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 3880 conjuncts, 393 conjunts are in the unsatisfiable core [2023-12-26 08:53:51,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:55:11,913 WARN L293 SmtUtils]: Spent 10.29s on a formula simplification that was a NOOP. DAG size: 1137 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 08:55:45,368 WARN L293 SmtUtils]: Spent 11.21s on a formula simplification that was a NOOP. DAG size: 1155 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 08:56:19,558 WARN L293 SmtUtils]: Spent 11.13s on a formula simplification that was a NOOP. DAG size: 1148 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 08:58:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 33 proven. 98 refuted. 1 times theorem prover too weak. 183 trivial. 0 not checked. [2023-12-26 08:58:26,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 08:58:38,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 08:58:38,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012387756] [2023-12-26 08:58:38,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012387756] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 08:58:38,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [49298527] [2023-12-26 08:58:38,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-26 08:58:38,858 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 08:58:38,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 08:58:38,860 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 08:58:38,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-26 08:58:54,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-26 08:58:54,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 08:58:55,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 3880 conjuncts, 444 conjunts are in the unsatisfiable core [2023-12-26 08:58:55,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 09:02:14,786 WARN L293 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 987 DAG size of output: 987 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 09:02:31,162 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") [2023-12-26 09:02:31,163 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-26 09:02:31,179 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 [2023-12-26 09:02:31,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-26 09:02:31,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-26 09:02:31,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 09:02:31,564 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.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) ... 45 more [2023-12-26 09:02:31,568 INFO L158 Benchmark]: Toolchain (without parser) took 615738.11ms. Allocated memory was 260.0MB in the beginning and 916.5MB in the end (delta: 656.4MB). Free memory was 205.1MB in the beginning and 541.0MB in the end (delta: -335.9MB). Peak memory consumption was 578.9MB. Max. memory is 8.0GB. [2023-12-26 09:02:31,568 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 216.0MB. Free memory is still 166.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 09:02:31,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.21ms. Allocated memory is still 260.0MB. Free memory was 205.0MB in the beginning and 201.6MB in the end (delta: 3.4MB). Peak memory consumption was 30.6MB. Max. memory is 8.0GB. [2023-12-26 09:02:31,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 110.86ms. Allocated memory is still 260.0MB. Free memory was 201.6MB in the beginning and 190.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-26 09:02:31,569 INFO L158 Benchmark]: Boogie Preprocessor took 114.27ms. Allocated memory is still 260.0MB. Free memory was 190.6MB in the beginning and 178.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-26 09:02:31,569 INFO L158 Benchmark]: RCFGBuilder took 1694.97ms. Allocated memory was 260.0MB in the beginning and 367.0MB in the end (delta: 107.0MB). Free memory was 178.4MB in the beginning and 276.5MB in the end (delta: -98.0MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. [2023-12-26 09:02:31,569 INFO L158 Benchmark]: TraceAbstraction took 613278.27ms. Allocated memory was 367.0MB in the beginning and 916.5MB in the end (delta: 549.5MB). Free memory was 276.0MB in the beginning and 541.0MB in the end (delta: -265.0MB). Peak memory consumption was 542.4MB. Max. memory is 8.0GB. [2023-12-26 09:02:31,570 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 216.0MB. Free memory is still 166.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 534.21ms. Allocated memory is still 260.0MB. Free memory was 205.0MB in the beginning and 201.6MB in the end (delta: 3.4MB). Peak memory consumption was 30.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 110.86ms. Allocated memory is still 260.0MB. Free memory was 201.6MB in the beginning and 190.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 114.27ms. Allocated memory is still 260.0MB. Free memory was 190.6MB in the beginning and 178.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1694.97ms. Allocated memory was 260.0MB in the beginning and 367.0MB in the end (delta: 107.0MB). Free memory was 178.4MB in the beginning and 276.5MB in the end (delta: -98.0MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. * TraceAbstraction took 613278.27ms. Allocated memory was 367.0MB in the beginning and 916.5MB in the end (delta: 549.5MB). Free memory was 276.0MB in the beginning and 541.0MB in the end (delta: -265.0MB). Peak memory consumption was 542.4MB. 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...