/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.pgm_protocol.2.prop5-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 14:08:22,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 14:08:22,913 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 14:08:22,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 14:08:22,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 14:08:22,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 14:08:22,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 14:08:22,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 14:08:22,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 14:08:22,930 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 14:08:22,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 14:08:22,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 14:08:22,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 14:08:22,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 14:08:22,931 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 14:08:22,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 14:08:22,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 14:08:22,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 14:08:22,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 14:08:22,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 14:08:22,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 14:08:22,944 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 14:08:22,944 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 14:08:22,945 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 14:08:22,945 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 14:08:22,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 14:08:22,945 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 14:08:22,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 14:08:22,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 14:08:22,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 14:08:22,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 14:08:22,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 14:08:22,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 14:08:22,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 14:08:22,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 14:08:22,947 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 14:08:22,947 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 14:08:22,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 14:08:22,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 14:08:22,948 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 14:08:22,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 14:08:22,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 14:08:22,949 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 14:08:22,949 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 14:08:23,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 14:08:23,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 14:08:23,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 14:08:23,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 14:08:23,164 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 14:08:23,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop5-back-serstep.c [2023-12-26 14:08:24,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 14:08:24,696 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 14:08:24,697 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop5-back-serstep.c [2023-12-26 14:08:24,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b949a9770/07d9778f10ba49e8b8d974e93c16f68a/FLAGb14a1bbc3 [2023-12-26 14:08:24,771 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b949a9770/07d9778f10ba49e8b8d974e93c16f68a [2023-12-26 14:08:24,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 14:08:24,776 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 14:08:24,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 14:08:24,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 14:08:24,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 14:08:24,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 02:08:24" (1/1) ... [2023-12-26 14:08:24,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b2c4adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:24, skipping insertion in model container [2023-12-26 14:08:24,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 02:08:24" (1/1) ... [2023-12-26 14:08:24,942 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 14:08:25,160 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.pgm_protocol.2.prop5-back-serstep.c[1180,1193] [2023-12-26 14:08:25,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 14:08:25,914 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 14:08:25,999 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.pgm_protocol.2.prop5-back-serstep.c[1180,1193] [2023-12-26 14:08:26,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 14:08:26,490 INFO L206 MainTranslator]: Completed translation [2023-12-26 14:08:26,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26 WrapperNode [2023-12-26 14:08:26,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 14:08:26,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 14:08:26,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 14:08:26,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 14:08:26,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:26,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:27,038 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 16009 [2023-12-26 14:08:27,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 14:08:27,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 14:08:27,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 14:08:27,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 14:08:27,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:27,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:27,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:27,378 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 14:08:27,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:27,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:27,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:27,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:27,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:27,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:27,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 14:08:27,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 14:08:27,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 14:08:27,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 14:08:27,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (1/1) ... [2023-12-26 14:08:27,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 14:08:27,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 14:08:27,814 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 14:08:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 14:08:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 14:08:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 14:08:27,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 14:08:27,843 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 14:08:29,142 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 14:08:29,143 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 14:09:41,841 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 14:09:42,238 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 14:09:42,238 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 14:09:42,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 02:09:42 BoogieIcfgContainer [2023-12-26 14:09:42,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 14:09:42,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 14:09:42,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 14:09:42,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 14:09:42,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 02:08:24" (1/3) ... [2023-12-26 14:09:42,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67345b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 02:09:42, skipping insertion in model container [2023-12-26 14:09:42,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:08:26" (2/3) ... [2023-12-26 14:09:42,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67345b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 02:09:42, skipping insertion in model container [2023-12-26 14:09:42,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 02:09:42" (3/3) ... [2023-12-26 14:09:42,243 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.2.prop5-back-serstep.c [2023-12-26 14:09:42,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 14:09:42,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 14:09:42,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 14:09:42,290 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;@646ef0d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 14:09:42,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 14:09:42,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 14:09:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-26 14:09:42,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 14:09:42,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-26 14:09:42,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 14:09:42,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 14:09:42,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-26 14:09:42,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 14:09:42,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817443635] [2023-12-26 14:09:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 14:09:42,313 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 14:09:42,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 14:09:42,315 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 14:09:42,335 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 14:09:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 14:09:47,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-26 14:09:47,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 14:09:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 14:09:47,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 14:09:47,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 14:09:47,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817443635] [2023-12-26 14:09:47,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817443635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 14:09:47,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 14:09:47,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-26 14:09:47,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782163996] [2023-12-26 14:09:47,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 14:09:47,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 14:09:47,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 14:09:47,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 14:09:47,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 14:09:47,365 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 14:09:52,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 14:09:56,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 14:10:00,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 14:10:05,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 14:10:09,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 14:10:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 14:10:09,533 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-26 14:10:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 14:10:09,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-26 14:10:09,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 14:10:09,701 INFO L225 Difference]: With dead ends: 16 [2023-12-26 14:10:09,701 INFO L226 Difference]: Without dead ends: 9 [2023-12-26 14:10:09,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-26 14:10:09,706 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2023-12-26 14:10:09,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 22.0s Time] [2023-12-26 14:10:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-26 14:10:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-26 14:10:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 14:10:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-26 14:10:09,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-26 14:10:09,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 14:10:09,727 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-26 14:10:09,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 14:10:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-26 14:10:09,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-26 14:10:09,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 14:10:09,728 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-26 14:10:09,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-26 14:10:09,942 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 14:10:09,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 14:10:09,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 14:10:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-26 14:10:09,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 14:10:09,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850451385] [2023-12-26 14:10:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 14:10:09,960 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 14:10:09,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 14:10:09,962 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 14:10:09,967 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 14:11:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 14:11:35,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 14086 conjuncts, 152 conjunts are in the unsatisfiable core [2023-12-26 14:11:35,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 14:11:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 14:11:37,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 14:11:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 14:11:42,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 14:11:42,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850451385] [2023-12-26 14:11:42,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850451385] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 14:11:42,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 14:11:42,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-26 14:11:42,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021190033] [2023-12-26 14:11:42,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 14:11:42,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-26 14:11:42,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 14:11:42,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-26 14:11:42,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-26 14:11:42,580 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 14:11:47,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 14:11:51,899 WARN L539 Checker$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 14:11:54,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 14:12:00,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-12-26 14:12:04,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 14:12:09,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-26 14:12:13,967 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 14:12:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 14:12:13,968 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-26 14:12:14,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-26 14:12:14,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-26 14:12:14,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 14:12:14,112 INFO L225 Difference]: With dead ends: 14 [2023-12-26 14:12:14,113 INFO L226 Difference]: Without dead ends: 12 [2023-12-26 14:12:14,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-26 14:12:14,114 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2023-12-26 14:12:14,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 30.7s Time] [2023-12-26 14:12:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-26 14:12:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-26 14:12:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 14:12:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-26 14:12:14,116 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-26 14:12:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 14:12:14,116 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-26 14:12:14,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 14:12:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-26 14:12:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-26 14:12:14,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 14:12:14,117 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-26 14:12:14,207 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 14:12:14,317 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 14:12:14,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 14:12:14,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 14:12:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-26 14:12:14,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 14:12:14,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032546201] [2023-12-26 14:12:14,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 14:12:14,347 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 14:12:14,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 14:12:14,348 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 14:12:14,349 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 14:16:14,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 14:16:14,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 14:16:15,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 26674 conjuncts, 1029 conjunts are in the unsatisfiable core [2023-12-26 14:16:15,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-26 14:22:51,764 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 14:22:51,765 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 (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-26 14:22:51,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-26 14:22:52,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-26 14:22:52,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 14:22:52,088 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 11 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-8-1 context. [2023-12-26 14:22:52,093 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-12-26 14:22:52,094 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-26 14:22:52,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.12 02:22:52 BoogieIcfgContainer [2023-12-26 14:22:52,096 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-26 14:22:52,096 INFO L158 Benchmark]: Toolchain (without parser) took 867320.67ms. Allocated memory was 188.7MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 113.3MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-26 14:22:52,097 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 135.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 14:22:52,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1715.20ms. Allocated memory was 188.7MB in the beginning and 593.5MB in the end (delta: 404.8MB). Free memory was 113.0MB in the beginning and 430.2MB in the end (delta: -317.3MB). Peak memory consumption was 229.0MB. Max. memory is 8.0GB. [2023-12-26 14:22:52,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 545.41ms. Allocated memory is still 593.5MB. Free memory was 430.2MB in the beginning and 377.1MB in the end (delta: 53.1MB). Peak memory consumption was 90.2MB. Max. memory is 8.0GB. [2023-12-26 14:22:52,097 INFO L158 Benchmark]: Boogie Preprocessor took 722.00ms. Allocated memory is still 593.5MB. Free memory was 377.1MB in the beginning and 365.2MB in the end (delta: 11.9MB). Peak memory consumption was 92.8MB. Max. memory is 8.0GB. [2023-12-26 14:22:52,098 INFO L158 Benchmark]: RCFGBuilder took 74476.64ms. Allocated memory was 593.5MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 365.2MB in the beginning and 610.5MB in the end (delta: -245.3MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-26 14:22:52,098 INFO L158 Benchmark]: TraceAbstraction took 789856.31ms. Allocated memory was 1.7GB in the beginning and 3.2GB in the end (delta: 1.5GB). Free memory was 610.0MB in the beginning and 1.6GB in the end (delta: -991.0MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-26 14:22:52,101 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 188.7MB. Free memory is still 135.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1715.20ms. Allocated memory was 188.7MB in the beginning and 593.5MB in the end (delta: 404.8MB). Free memory was 113.0MB in the beginning and 430.2MB in the end (delta: -317.3MB). Peak memory consumption was 229.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 545.41ms. Allocated memory is still 593.5MB. Free memory was 430.2MB in the beginning and 377.1MB in the end (delta: 53.1MB). Peak memory consumption was 90.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 722.00ms. Allocated memory is still 593.5MB. Free memory was 377.1MB in the beginning and 365.2MB in the end (delta: 11.9MB). Peak memory consumption was 92.8MB. Max. memory is 8.0GB. * RCFGBuilder took 74476.64ms. Allocated memory was 593.5MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 365.2MB in the beginning and 610.5MB in the end (delta: -245.3MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. * TraceAbstraction took 789856.31ms. Allocated memory was 1.7GB in the beginning and 3.2GB in the end (delta: 1.5GB). Free memory was 610.0MB in the beginning and 1.6GB in the end (delta: -991.0MB). Peak memory consumption was 1.4GB. 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 11 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-8-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 789.8s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 53.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 52.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 52.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 5 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.1s SsaConstructionTime, 85.4s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 5 QuantifiedInterpolants, 3458 SizeOfPredicates, 222 NumberOfNonLiveVariables, 15584 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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