/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-36.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 14:36:57,941 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 14:36:58,021 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 14:36:58,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 14:36:58,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 14:36:58,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 14:36:58,048 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 14:36:58,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 14:36:58,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 14:36:58,052 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 14:36:58,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 14:36:58,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 14:36:58,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 14:36:58,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 14:36:58,054 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 14:36:58,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 14:36:58,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 14:36:58,055 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 14:36:58,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 14:36:58,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 14:36:58,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 14:36:58,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 14:36:58,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 14:36:58,057 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 14:36:58,057 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 14:36:58,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 14:36:58,057 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 14:36:58,057 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 14:36:58,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 14:36:58,058 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 14:36:58,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 14:36:58,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 14:36:58,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 14:36:58,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 14:36:58,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:36:58,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 14:36:58,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 14:36:58,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 14:36:58,060 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 14:36:58,060 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 14:36:58,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 14:36:58,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 14:36:58,060 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 14:36:58,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 14:36:58,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 14:36:58,061 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 14:36:58,061 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 14:36:58,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 14:36:58,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 14:36:58,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 14:36:58,273 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 14:36:58,274 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 14:36:58,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-36.i [2023-12-16 14:36:59,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 14:36:59,508 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 14:36:59,508 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-36.i [2023-12-16 14:36:59,516 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9dc0795/ce8f7ceb3ac9400db4a150f84e89c811/FLAG48eaf3481 [2023-12-16 14:36:59,527 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9dc0795/ce8f7ceb3ac9400db4a150f84e89c811 [2023-12-16 14:36:59,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 14:36:59,531 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 14:36:59,532 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 14:36:59,532 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 14:36:59,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 14:36:59,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d7353c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59, skipping insertion in model container [2023-12-16 14:36:59,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,563 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 14:36:59,701 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-36.i[915,928] [2023-12-16 14:36:59,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:36:59,735 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 14:36:59,747 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-36.i[915,928] [2023-12-16 14:36:59,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:36:59,770 INFO L206 MainTranslator]: Completed translation [2023-12-16 14:36:59,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59 WrapperNode [2023-12-16 14:36:59,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 14:36:59,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 14:36:59,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 14:36:59,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 14:36:59,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,805 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2023-12-16 14:36:59,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 14:36:59,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 14:36:59,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 14:36:59,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 14:36:59,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,818 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,828 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]. [2023-12-16 14:36:59,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 14:36:59,843 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 14:36:59,843 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 14:36:59,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 14:36:59,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (1/1) ... [2023-12-16 14:36:59,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:36:59,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 14:36:59,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 14:36:59,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 14:36:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 14:36:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 14:36:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 14:36:59,914 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 14:36:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 14:36:59,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 14:36:59,989 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 14:36:59,991 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 14:37:00,188 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 14:37:00,218 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 14:37:00,218 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 14:37:00,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:00 BoogieIcfgContainer [2023-12-16 14:37:00,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 14:37:00,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 14:37:00,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 14:37:00,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 14:37:00,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:36:59" (1/3) ... [2023-12-16 14:37:00,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22107f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:37:00, skipping insertion in model container [2023-12-16 14:37:00,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:59" (2/3) ... [2023-12-16 14:37:00,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22107f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:37:00, skipping insertion in model container [2023-12-16 14:37:00,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:00" (3/3) ... [2023-12-16 14:37:00,226 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-36.i [2023-12-16 14:37:00,243 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 14:37:00,243 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 14:37:00,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 14:37:00,286 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;@2d268a19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 14:37:00,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 14:37:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 14:37:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 14:37:00,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:37:00,298 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2023-12-16 14:37:00,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:37:00,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:37:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1990853393, now seen corresponding path program 1 times [2023-12-16 14:37:00,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:37:00,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590742289] [2023-12-16 14:37:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:37:00,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:37:00,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:37:00,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:37:00,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 14:37:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:37:00,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 14:37:00,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:37:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-16 14:37:00,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:37:00,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:37:00,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590742289] [2023-12-16 14:37:00,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590742289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:37:00,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 14:37:00,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 14:37:00,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968236095] [2023-12-16 14:37:00,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:37:00,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 14:37:00,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:37:00,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 14:37:00,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 14:37:00,552 INFO L87 Difference]: Start difference. First operand has 36 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 14:37:00,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:37:00,591 INFO L93 Difference]: Finished difference Result 69 states and 118 transitions. [2023-12-16 14:37:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 14:37:00,594 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2023-12-16 14:37:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:37:00,600 INFO L225 Difference]: With dead ends: 69 [2023-12-16 14:37:00,600 INFO L226 Difference]: Without dead ends: 34 [2023-12-16 14:37:00,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 14:37:00,607 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 14:37:00,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 14:37:00,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-16 14:37:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-12-16 14:37:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 14:37:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2023-12-16 14:37:00,643 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 74 [2023-12-16 14:37:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:37:00,643 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2023-12-16 14:37:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 14:37:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2023-12-16 14:37:00,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 14:37:00,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:37:00,648 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2023-12-16 14:37:00,652 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 [2023-12-16 14:37:00,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:37:00,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:37:00,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:37:00,853 INFO L85 PathProgramCache]: Analyzing trace with hash 456053999, now seen corresponding path program 1 times [2023-12-16 14:37:00,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:37:00,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654227743] [2023-12-16 14:37:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:37:00,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:37:00,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:37:00,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:37:00,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 14:37:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:37:00,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 14:37:00,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:37:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-16 14:37:01,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:37:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 14:37:02,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:37:02,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654227743] [2023-12-16 14:37:02,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654227743] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 14:37:02,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 14:37:02,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-16 14:37:02,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128439721] [2023-12-16 14:37:02,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:37:02,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 14:37:02,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:37:02,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 14:37:02,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 14:37:02,336 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 14:37:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:37:02,412 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2023-12-16 14:37:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 14:37:02,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2023-12-16 14:37:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:37:02,417 INFO L225 Difference]: With dead ends: 60 [2023-12-16 14:37:02,417 INFO L226 Difference]: Without dead ends: 58 [2023-12-16 14:37:02,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-16 14:37:02,419 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 32 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 14:37:02,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 118 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 14:37:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-16 14:37:02,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2023-12-16 14:37:02,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 35 states have internal predecessors, (42), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 14:37:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 82 transitions. [2023-12-16 14:37:02,446 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 82 transitions. Word has length 74 [2023-12-16 14:37:02,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:37:02,447 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 82 transitions. [2023-12-16 14:37:02,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 14:37:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 82 transitions. [2023-12-16 14:37:02,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 14:37:02,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:37:02,449 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2023-12-16 14:37:02,453 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 (3)] Ended with exit code 0 [2023-12-16 14:37:02,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:37:02,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:37:02,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:37:02,655 INFO L85 PathProgramCache]: Analyzing trace with hash 513312301, now seen corresponding path program 1 times [2023-12-16 14:37:02,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:37:02,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700029618] [2023-12-16 14:37:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:37:02,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:37:02,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:37:02,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:37:02,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 14:37:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:37:02,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 14:37:02,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:37:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-16 14:37:03,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:37:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-16 14:37:03,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:37:03,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700029618] [2023-12-16 14:37:03,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700029618] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 14:37:03,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 14:37:03,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-12-16 14:37:03,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24182651] [2023-12-16 14:37:03,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 14:37:03,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 14:37:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:37:03,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 14:37:03,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-16 14:37:03,533 INFO L87 Difference]: Start difference. First operand 57 states and 82 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-16 14:37:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:37:03,689 INFO L93 Difference]: Finished difference Result 119 states and 167 transitions. [2023-12-16 14:37:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 14:37:03,704 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 74 [2023-12-16 14:37:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:37:03,705 INFO L225 Difference]: With dead ends: 119 [2023-12-16 14:37:03,705 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 14:37:03,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2023-12-16 14:37:03,706 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 14:37:03,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 95 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 14:37:03,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 14:37:03,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 14:37:03,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 14:37:03,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 14:37:03,707 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2023-12-16 14:37:03,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:37:03,707 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 14:37:03,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-16 14:37:03,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 14:37:03,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 14:37:03,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 14:37:03,715 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 [2023-12-16 14:37:03,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:37:03,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 14:37:04,020 INFO L899 garLoopResultBuilder]: For program point L35-2(lines 35 37) no Hoare annotation was computed. [2023-12-16 14:37:04,020 INFO L895 garLoopResultBuilder]: At program point L64(line 64) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-16 14:37:04,021 INFO L895 garLoopResultBuilder]: At program point L64-1(line 64) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-16 14:37:04,021 INFO L899 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2023-12-16 14:37:04,021 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-16 14:37:04,021 INFO L895 garLoopResultBuilder]: At program point L52-1(line 52) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-16 14:37:04,021 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-16 14:37:04,021 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-16 14:37:04,021 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-16 14:37:04,021 INFO L895 garLoopResultBuilder]: At program point L77-2(lines 77 83) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-16 14:37:04,021 INFO L899 garLoopResultBuilder]: For program point L77-3(lines 77 83) no Hoare annotation was computed. [2023-12-16 14:37:04,021 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 44) no Hoare annotation was computed. [2023-12-16 14:37:04,021 INFO L899 garLoopResultBuilder]: For program point L65(lines 47 66) no Hoare annotation was computed. [2023-12-16 14:37:04,022 INFO L895 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: (= (_ bv1 8) ~var_1_1~0) [2023-12-16 14:37:04,022 INFO L895 garLoopResultBuilder]: At program point L61-1(line 61) the Hoare annotation is: (= (_ bv1 8) ~var_1_1~0) [2023-12-16 14:37:04,022 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-16 14:37:04,022 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-12-16 14:37:04,022 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-16 14:37:04,022 INFO L895 garLoopResultBuilder]: At program point L49-1(line 49) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-16 14:37:04,022 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 43) no Hoare annotation was computed. [2023-12-16 14:37:04,022 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 46) no Hoare annotation was computed. [2023-12-16 14:37:04,022 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 14:37:04,022 INFO L899 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2023-12-16 14:37:04,022 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-16 14:37:04,023 INFO L895 garLoopResultBuilder]: At program point L58-1(line 58) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-16 14:37:04,023 INFO L899 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2023-12-16 14:37:04,023 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 14:37:04,023 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-12-16 14:37:04,023 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-16 14:37:04,023 INFO L895 garLoopResultBuilder]: At program point L55-1(line 55) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-16 14:37:04,023 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 45) no Hoare annotation was computed. [2023-12-16 14:37:04,023 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 37) no Hoare annotation was computed. [2023-12-16 14:37:04,023 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-12-16 14:37:04,023 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-16 14:37:04,023 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-12-16 14:37:04,024 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-12-16 14:37:04,027 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-16 14:37:04,029 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 14:37:04,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:37:04 BoogieIcfgContainer [2023-12-16 14:37:04,037 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 14:37:04,037 INFO L158 Benchmark]: Toolchain (without parser) took 4506.66ms. Allocated memory was 257.9MB in the beginning and 400.6MB in the end (delta: 142.6MB). Free memory was 205.6MB in the beginning and 146.4MB in the end (delta: 59.2MB). Peak memory consumption was 202.9MB. Max. memory is 8.0GB. [2023-12-16 14:37:04,037 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 215.0MB. Free memory is still 161.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 14:37:04,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.55ms. Allocated memory is still 257.9MB. Free memory was 205.1MB in the beginning and 193.0MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 14:37:04,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.98ms. Allocated memory is still 257.9MB. Free memory was 193.0MB in the beginning and 191.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 14:37:04,038 INFO L158 Benchmark]: Boogie Preprocessor took 36.13ms. Allocated memory is still 257.9MB. Free memory was 191.4MB in the beginning and 189.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 14:37:04,038 INFO L158 Benchmark]: RCFGBuilder took 375.40ms. Allocated memory is still 257.9MB. Free memory was 189.3MB in the beginning and 173.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 14:37:04,040 INFO L158 Benchmark]: TraceAbstraction took 3816.30ms. Allocated memory was 257.9MB in the beginning and 400.6MB in the end (delta: 142.6MB). Free memory was 173.1MB in the beginning and 146.4MB in the end (delta: 26.7MB). Peak memory consumption was 170.4MB. Max. memory is 8.0GB. [2023-12-16 14:37:04,041 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 215.0MB. Free memory is still 161.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 239.55ms. Allocated memory is still 257.9MB. Free memory was 205.1MB in the beginning and 193.0MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.98ms. Allocated memory is still 257.9MB. Free memory was 193.0MB in the beginning and 191.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.13ms. Allocated memory is still 257.9MB. Free memory was 191.4MB in the beginning and 189.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 375.40ms. Allocated memory is still 257.9MB. Free memory was 189.3MB in the beginning and 173.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3816.30ms. Allocated memory was 257.9MB in the beginning and 400.6MB in the end (delta: 142.6MB). Free memory was 173.1MB in the beginning and 146.4MB in the end (delta: 26.7MB). Peak memory consumption was 170.4MB. 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 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 3, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 259 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 147 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 155 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 112 mSDtfsCounter, 155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 371 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=2, InterpolantAutomatonStates: 18, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 65 PreInvPairs, 87 NumberOfFragments, 95 HoareAnnotationTreeSize, 65 FormulaSimplifications, 391 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FormulaSimplificationsInter, 218 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 365 ConstructedInterpolants, 0 QuantifiedInterpolants, 987 SizeOfPredicates, 41 NumberOfNonLiveVariables, 371 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 1302/1320 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 77]: Loop Invariant Derived loop invariant: ((var_1_6 <= 0) && (1 == var_1_1)) RESULT: Ultimate proved your program to be correct! [2023-12-16 14:37:04,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...