/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.arbitrated_top_n4_w8_d32_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 03:19:43,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 03:19:43,808 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 03:19:43,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 03:19:43,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 03:19:43,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 03:19:43,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 03:19:43,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 03:19:43,824 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 03:19:43,825 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 03:19:43,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 03:19:43,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 03:19:43,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 03:19:43,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 03:19:43,826 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 03:19:43,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 03:19:43,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 03:19:43,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 03:19:43,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 03:19:43,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 03:19:43,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 03:19:43,828 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 03:19:43,828 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 03:19:43,828 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 03:19:43,829 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 03:19:43,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 03:19:43,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 03:19:43,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 03:19:43,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 03:19:43,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 03:19:43,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 03:19:43,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 03:19:43,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 03:19:43,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 03:19:43,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 03:19:43,831 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 03:19:43,831 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 03:19:43,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 03:19:43,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 03:19:43,831 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 03:19:43,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 03:19:43,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 03:19:43,832 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 03:19:43,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 03:19:43,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 03:19:43,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 03:19:43,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 03:19:43,972 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 03:19:43,972 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 03:19:43,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w8_d32_e0.c [2023-12-26 03:19:44,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 03:19:45,149 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 03:19:45,150 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w8_d32_e0.c [2023-12-26 03:19:45,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3dc53f49/626398ab9f734aaa9b338c43b2727e14/FLAGbe5444d54 [2023-12-26 03:19:45,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3dc53f49/626398ab9f734aaa9b338c43b2727e14 [2023-12-26 03:19:45,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 03:19:45,185 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 03:19:45,186 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 03:19:45,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 03:19:45,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 03:19:45,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:19:45" (1/1) ... [2023-12-26 03:19:45,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec6bb36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:45, skipping insertion in model container [2023-12-26 03:19:45,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:19:45" (1/1) ... [2023-12-26 03:19:45,270 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 03:19:45,432 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.arbitrated_top_n4_w8_d32_e0.c[1270,1283] [2023-12-26 03:19:45,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 03:19:45,822 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 03:19:45,829 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.arbitrated_top_n4_w8_d32_e0.c[1270,1283] [2023-12-26 03:19:46,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 03:19:46,038 INFO L206 MainTranslator]: Completed translation [2023-12-26 03:19:46,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46 WrapperNode [2023-12-26 03:19:46,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 03:19:46,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 03:19:46,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 03:19:46,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 03:19:46,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,250 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4926 [2023-12-26 03:19:46,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 03:19:46,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 03:19:46,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 03:19:46,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 03:19:46,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,334 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 03:19:46,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 03:19:46,479 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 03:19:46,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 03:19:46,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 03:19:46,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (1/1) ... [2023-12-26 03:19:46,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 03:19:46,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 03:19:46,513 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 03:19:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 03:19:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 03:19:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-26 03:19:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-26 03:19:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 03:19:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 03:19:46,536 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 03:19:47,148 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 03:19:47,151 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 03:19:51,044 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 03:19:51,241 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 03:19:51,241 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 03:19:51,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:19:51 BoogieIcfgContainer [2023-12-26 03:19:51,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 03:19:51,244 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 03:19:51,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 03:19:51,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 03:19:51,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 03:19:45" (1/3) ... [2023-12-26 03:19:51,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8df5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:19:51, skipping insertion in model container [2023-12-26 03:19:51,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:19:46" (2/3) ... [2023-12-26 03:19:51,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8df5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:19:51, skipping insertion in model container [2023-12-26 03:19:51,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:19:51" (3/3) ... [2023-12-26 03:19:51,249 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n4_w8_d32_e0.c [2023-12-26 03:19:51,260 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 03:19:51,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 03:19:51,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 03:19:51,294 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;@7a392d55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 03:19:51,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 03:19:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-26 03:19:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-26 03:19:51,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:19:51,303 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-26 03:19:51,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:19:51,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:19:51,307 INFO L85 PathProgramCache]: Analyzing trace with hash 465018047, now seen corresponding path program 1 times [2023-12-26 03:19:51,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:19:51,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363563380] [2023-12-26 03:19:51,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:19:51,319 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 03:19:51,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:19:51,321 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 03:19:51,333 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 03:19:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:19:52,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-26 03:19:52,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:19:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-26 03:19:52,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 03:19:52,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:19:52,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363563380] [2023-12-26 03:19:52,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363563380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 03:19:52,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 03:19:52,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-26 03:19:52,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377478159] [2023-12-26 03:19:52,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 03:19:52,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-26 03:19:52,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:19:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-26 03:19:52,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-26 03:19:52,473 INFO L87 Difference]: Start difference. First operand has 38 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-26 03:19:52,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 03:19:52,509 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2023-12-26 03:19:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-26 03:19:52,516 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2023-12-26 03:19:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 03:19:52,520 INFO L225 Difference]: With dead ends: 73 [2023-12-26 03:19:52,521 INFO L226 Difference]: Without dead ends: 36 [2023-12-26 03:19:52,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 81 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 03:19:52,525 INFO L413 NwaCegarLoop]: 47 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, 47 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 03:19:52,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-26 03:19:52,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-26 03:19:52,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-26 03:19:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-26 03:19:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2023-12-26 03:19:52,554 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 82 [2023-12-26 03:19:52,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 03:19:52,555 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2023-12-26 03:19:52,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-26 03:19:52,555 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2023-12-26 03:19:52,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-26 03:19:52,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:19:52,557 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-26 03:19:52,571 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 03:19:52,769 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 03:19:52,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:19:52,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:19:52,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1729667557, now seen corresponding path program 1 times [2023-12-26 03:19:52,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:19:52,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571892539] [2023-12-26 03:19:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:19:52,773 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 03:19:52,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:19:52,774 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 03:19:52,778 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 03:19:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:19:55,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-26 03:19:55,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:19:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-26 03:19:55,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 03:19:55,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:19:55,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571892539] [2023-12-26 03:19:55,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571892539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 03:19:55,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 03:19:55,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-26 03:19:55,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436977105] [2023-12-26 03:19:55,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 03:19:55,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 03:19:55,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:19:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 03:19:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 03:19:55,885 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-26 03:19:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 03:19:56,486 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2023-12-26 03:19:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 03:19:56,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 82 [2023-12-26 03:19:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 03:19:56,488 INFO L225 Difference]: With dead ends: 67 [2023-12-26 03:19:56,488 INFO L226 Difference]: Without dead ends: 65 [2023-12-26 03:19:56,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 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 03:19:56,489 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-26 03:19:56,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 93 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-26 03:19:56,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-26 03:19:56,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2023-12-26 03:19:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-26 03:19:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2023-12-26 03:19:56,499 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 82 [2023-12-26 03:19:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 03:19:56,501 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2023-12-26 03:19:56,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-26 03:19:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2023-12-26 03:19:56,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-26 03:19:56,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:19:56,505 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-26 03:19:56,520 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 03:19:56,716 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 03:19:56,716 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:19:56,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:19:56,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1215904089, now seen corresponding path program 1 times [2023-12-26 03:19:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:19:56,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144429479] [2023-12-26 03:19:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:19:56,721 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 03:19:56,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:19:56,722 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 03:19:56,723 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 03:20:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:20:25,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 5808 conjuncts, 247 conjunts are in the unsatisfiable core [2023-12-26 03:20:25,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:20:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 177 proven. 115 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2023-12-26 03:20:30,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:20:50,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:20:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144429479] [2023-12-26 03:20:50,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144429479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:20:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2139637014] [2023-12-26 03:20:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:20:50,091 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 03:20:50,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 03:20:50,092 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 03:20:50,093 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 03:20:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:20:54,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 5808 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-26 03:20:54,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:20:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-12-26 03:20:54,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:20:55,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2139637014] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:20:55,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 03:20:55,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 19 [2023-12-26 03:20:55,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365303725] [2023-12-26 03:20:55,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 03:20:55,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-26 03:20:55,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:20:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-26 03:20:55,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=412, Unknown=3, NotChecked=0, Total=462 [2023-12-26 03:20:55,069 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 19 states, 14 states have (on average 5.0) internal successors, (70), 17 states have internal predecessors, (70), 12 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 9 states have call predecessors, (52), 12 states have call successors, (52) [2023-12-26 03:20:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 03:20:59,121 INFO L93 Difference]: Finished difference Result 96 states and 134 transitions. [2023-12-26 03:20:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-26 03:20:59,121 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 5.0) internal successors, (70), 17 states have internal predecessors, (70), 12 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 9 states have call predecessors, (52), 12 states have call successors, (52) Word has length 163 [2023-12-26 03:20:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 03:20:59,123 INFO L225 Difference]: With dead ends: 96 [2023-12-26 03:20:59,123 INFO L226 Difference]: Without dead ends: 94 [2023-12-26 03:20:59,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=187, Invalid=1000, Unknown=3, NotChecked=0, Total=1190 [2023-12-26 03:20:59,124 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 89 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-26 03:20:59,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 393 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-26 03:20:59,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-26 03:20:59,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2023-12-26 03:20:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-26 03:20:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 131 transitions. [2023-12-26 03:20:59,175 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 131 transitions. Word has length 163 [2023-12-26 03:20:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 03:20:59,176 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 131 transitions. [2023-12-26 03:20:59,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 5.0) internal successors, (70), 17 states have internal predecessors, (70), 12 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 9 states have call predecessors, (52), 12 states have call successors, (52) [2023-12-26 03:20:59,176 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 131 transitions. [2023-12-26 03:20:59,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-26 03:20:59,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:20:59,182 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-12-26 03:20:59,217 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 03:20:59,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-26 03:20:59,583 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 03:20:59,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:20:59,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:20:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash 555063397, now seen corresponding path program 2 times [2023-12-26 03:20:59,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:20:59,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059879767] [2023-12-26 03:20:59,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 03:20:59,589 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 03:20:59,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:20:59,593 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 03:20:59,596 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 03:22:12,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 03:22:12,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 03:22:12,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 9875 conjuncts, 217 conjunts are in the unsatisfiable core [2023-12-26 03:22:12,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:22:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 315 proven. 280 refuted. 0 times theorem prover too weak. 2454 trivial. 0 not checked. [2023-12-26 03:22:20,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:22:20,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:22:20,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059879767] [2023-12-26 03:22:20,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059879767] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:22:20,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [908807039] [2023-12-26 03:22:20,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 03:22:20,648 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 03:22:20,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 03:22:20,650 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 03:22:20,651 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 03:22:27,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 03:22:27,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 03:22:27,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 9875 conjuncts, 204 conjunts are in the unsatisfiable core [2023-12-26 03:22:27,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:24:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 264 proven. 241 refuted. 0 times theorem prover too weak. 2544 trivial. 0 not checked. [2023-12-26 03:24:04,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:24:05,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [908807039] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:24:05,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 03:24:05,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 31 [2023-12-26 03:24:05,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246311569] [2023-12-26 03:24:05,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 03:24:05,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-26 03:24:05,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:24:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-26 03:24:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=911, Unknown=20, NotChecked=0, Total=1056 [2023-12-26 03:24:05,133 INFO L87 Difference]: Start difference. First operand 93 states and 131 transitions. Second operand has 31 states, 23 states have (on average 3.739130434782609) internal successors, (86), 29 states have internal predecessors, (86), 19 states have call successors, (65), 1 states have call predecessors, (65), 2 states have return successors, (65), 13 states have call predecessors, (65), 19 states have call successors, (65) [2023-12-26 03:24:10,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:24:14,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:24:19,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:24:23,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:24:27,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:24:31,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:24:35,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:24:43,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:24:47,615 WARN L539 Checker$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 03:24:51,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.81s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:25:08,973 WARN L539 Checker$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 03:25:27,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:25:31,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:25:36,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:25:40,375 WARN L539 Checker$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 03:25:44,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:25:49,073 WARN L539 Checker$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 03:26:31,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:26:35,853 WARN L539 Checker$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 03:26:40,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:26:44,640 WARN L539 Checker$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 03:26:49,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:26:53,521 WARN L539 Checker$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 03:26:57,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:27:02,082 WARN L539 Checker$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 03:27:06,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:27:11,073 WARN L539 Checker$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 03:27:15,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:27:19,631 WARN L539 Checker$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 03:27:24,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:27:49,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:27:53,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:27:57,774 WARN L539 Checker$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 03:28:01,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:06,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:10,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:14,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:18,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:22,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:28:26,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:28,125 WARN L539 Checker$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 03:29:32,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:36,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:29:40,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:30:18,396 WARN L539 Checker$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 03:30:22,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:30:26,417 WARN L539 Checker$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 03:30:52,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:30:56,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:31:00,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:31:05,040 WARN L539 Checker$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 03:31:09,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:31:13,103 WARN L539 Checker$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 03:31:17,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:31:21,404 WARN L539 Checker$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 03:31:25,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:31:29,861 WARN L539 Checker$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 03:31:38,876 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 03:31:40,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 03:31:40,914 INFO L93 Difference]: Finished difference Result 127 states and 178 transitions. [2023-12-26 03:31:40,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-26 03:31:40,914 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 3.739130434782609) internal successors, (86), 29 states have internal predecessors, (86), 19 states have call successors, (65), 1 states have call predecessors, (65), 2 states have return successors, (65), 13 states have call predecessors, (65), 19 states have call successors, (65) Word has length 244 [2023-12-26 03:31:40,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 03:31:40,917 INFO L225 Difference]: With dead ends: 127 [2023-12-26 03:31:40,917 INFO L226 Difference]: Without dead ends: 125 [2023-12-26 03:31:40,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 462 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 305.3s TimeCoverageRelationStatistics Valid=416, Invalid=2173, Unknown=63, NotChecked=0, Total=2652 [2023-12-26 03:31:40,918 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 101 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 52 mSolverCounterUnsat, 55 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 239.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 55 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 245.5s IncrementalHoareTripleChecker+Time [2023-12-26 03:31:40,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 547 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1259 Invalid, 55 Unknown, 0 Unchecked, 245.5s Time] [2023-12-26 03:31:40,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-26 03:31:40,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2023-12-26 03:31:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-26 03:31:40,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 173 transitions. [2023-12-26 03:31:40,956 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 173 transitions. Word has length 244 [2023-12-26 03:31:40,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 03:31:40,956 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 173 transitions. [2023-12-26 03:31:40,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 3.739130434782609) internal successors, (86), 29 states have internal predecessors, (86), 19 states have call successors, (65), 1 states have call predecessors, (65), 2 states have return successors, (65), 13 states have call predecessors, (65), 19 states have call successors, (65) [2023-12-26 03:31:40,957 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 173 transitions. [2023-12-26 03:31:40,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-26 03:31:40,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:31:40,960 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2023-12-26 03:31:41,014 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 03:31:41,226 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 03:31:41,377 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 03:31:41,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:31:41,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:31:41,377 INFO L85 PathProgramCache]: Analyzing trace with hash -89386279, now seen corresponding path program 3 times [2023-12-26 03:31:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:31:41,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559848436] [2023-12-26 03:31:41,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-26 03:31:41,385 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 03:31:41,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:31:41,386 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 03:31:41,387 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 03:34:14,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-12-26 03:34:14,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 03:34:14,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 13794 conjuncts, 597 conjunts are in the unsatisfiable core [2023-12-26 03:34:14,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-26 03:34:17,016 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-26 03:34:17,058 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-26 03:34:17,058 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-26 03:34:17,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-26 03:34:17,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 03:34:17,217 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 326 with TraceHistMax 52,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-18-1 context. [2023-12-26 03:34:17,220 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-12-26 03:34:17,222 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-26 03:34:17,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.12 03:34:17 BoogieIcfgContainer [2023-12-26 03:34:17,223 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-26 03:34:17,224 INFO L158 Benchmark]: Toolchain (without parser) took 872039.03ms. Allocated memory was 276.8MB in the beginning and 1.2GB in the end (delta: 924.8MB). Free memory was 228.6MB in the beginning and 622.5MB in the end (delta: -393.9MB). Peak memory consumption was 531.7MB. Max. memory is 8.0GB. [2023-12-26 03:34:17,224 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 224.4MB. Free memory was 175.2MB in the beginning and 175.1MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 03:34:17,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 853.85ms. Allocated memory is still 276.8MB. Free memory was 228.6MB in the beginning and 198.7MB in the end (delta: 29.9MB). Peak memory consumption was 87.2MB. Max. memory is 8.0GB. [2023-12-26 03:34:17,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 209.66ms. Allocated memory is still 276.8MB. Free memory was 198.7MB in the beginning and 190.1MB in the end (delta: 8.6MB). Peak memory consumption was 42.7MB. Max. memory is 8.0GB. [2023-12-26 03:34:17,224 INFO L158 Benchmark]: Boogie Preprocessor took 226.76ms. Allocated memory was 276.8MB in the beginning and 502.3MB in the end (delta: 225.4MB). Free memory was 190.1MB in the beginning and 416.6MB in the end (delta: -226.5MB). Peak memory consumption was 51.9MB. Max. memory is 8.0GB. [2023-12-26 03:34:17,225 INFO L158 Benchmark]: RCFGBuilder took 4763.22ms. Allocated memory was 502.3MB in the beginning and 774.9MB in the end (delta: 272.6MB). Free memory was 416.6MB in the beginning and 619.7MB in the end (delta: -203.1MB). Peak memory consumption was 480.8MB. Max. memory is 8.0GB. [2023-12-26 03:34:17,225 INFO L158 Benchmark]: TraceAbstraction took 865979.42ms. Allocated memory was 774.9MB in the beginning and 1.2GB in the end (delta: 426.8MB). Free memory was 619.2MB in the beginning and 622.5MB in the end (delta: -3.3MB). Peak memory consumption was 424.6MB. Max. memory is 8.0GB. [2023-12-26 03:34:17,226 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 224.4MB. Free memory was 175.2MB in the beginning and 175.1MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 853.85ms. Allocated memory is still 276.8MB. Free memory was 228.6MB in the beginning and 198.7MB in the end (delta: 29.9MB). Peak memory consumption was 87.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 209.66ms. Allocated memory is still 276.8MB. Free memory was 198.7MB in the beginning and 190.1MB in the end (delta: 8.6MB). Peak memory consumption was 42.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 226.76ms. Allocated memory was 276.8MB in the beginning and 502.3MB in the end (delta: 225.4MB). Free memory was 190.1MB in the beginning and 416.6MB in the end (delta: -226.5MB). Peak memory consumption was 51.9MB. Max. memory is 8.0GB. * RCFGBuilder took 4763.22ms. Allocated memory was 502.3MB in the beginning and 774.9MB in the end (delta: 272.6MB). Free memory was 416.6MB in the beginning and 619.7MB in the end (delta: -203.1MB). Peak memory consumption was 480.8MB. Max. memory is 8.0GB. * TraceAbstraction took 865979.42ms. Allocated memory was 774.9MB in the beginning and 1.2GB in the end (delta: 426.8MB). Free memory was 619.2MB in the beginning and 622.5MB in the end (delta: -3.3MB). Peak memory consumption was 424.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 326 with TraceHistMax 52,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-18-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 865.9s, OverallIterations: 5, TraceHistogramMax: 52, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 460.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 mSolverCounterUnknown, 193 SdHoareTripleChecker+Valid, 248.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 193 mSDsluCounter, 1080 SdHoareTripleChecker+Invalid, 242.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 940 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2055 IncrementalHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 140 mSDtfsCounter, 2055 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1021 GetRequests, 934 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 323.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=4, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.5s SsaConstructionTime, 109.0s SatisfiabilityAnalysisTime, 132.3s InterpolantComputationTime, 978 NumberOfCodeBlocks, 978 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 972 ConstructedInterpolants, 96 QuantifiedInterpolants, 25330 SizeOfPredicates, 763 NumberOfNonLiveVariables, 34848 ConjunctsInSsa, 729 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 8663/9378 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown