/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/eca-rers2012/Problem11_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 09:06:18,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 09:06:18,252 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 09:06:18,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 09:06:18,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 09:06:18,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 09:06:18,280 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 09:06:18,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 09:06:18,281 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 09:06:18,285 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 09:06:18,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 09:06:18,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 09:06:18,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 09:06:18,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 09:06:18,288 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 09:06:18,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 09:06:18,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 09:06:18,289 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 09:06:18,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 09:06:18,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 09:06:18,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 09:06:18,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 09:06:18,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 09:06:18,291 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 09:06:18,291 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 09:06:18,291 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 09:06:18,291 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 09:06:18,291 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 09:06:18,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 09:06:18,292 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 09:06:18,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 09:06:18,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 09:06:18,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 09:06:18,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 09:06:18,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:06:18,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 09:06:18,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 09:06:18,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 09:06:18,294 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 09:06:18,294 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 09:06:18,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 09:06:18,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 09:06:18,294 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 09:06:18,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 09:06:18,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 09:06:18,295 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 09:06:18,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 09:06:18,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 09:06:18,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 09:06:18,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 09:06:18,539 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 09:06:18,539 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 09:06:18,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label07.c [2023-12-16 09:06:19,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 09:06:19,876 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 09:06:19,877 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label07.c [2023-12-16 09:06:19,888 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13895d509/9ca760ba340949c69a469b076dbd85c5/FLAG9b5936dd7 [2023-12-16 09:06:19,897 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13895d509/9ca760ba340949c69a469b076dbd85c5 [2023-12-16 09:06:19,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 09:06:19,900 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 09:06:19,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 09:06:19,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 09:06:19,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 09:06:19,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:06:19" (1/1) ... [2023-12-16 09:06:19,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f492c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:19, skipping insertion in model container [2023-12-16 09:06:19,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:06:19" (1/1) ... [2023-12-16 09:06:19,956 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 09:06:20,099 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label07.c[3406,3419] [2023-12-16 09:06:20,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:06:20,311 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 09:06:20,338 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label07.c[3406,3419] [2023-12-16 09:06:20,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:06:20,466 INFO L206 MainTranslator]: Completed translation [2023-12-16 09:06:20,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20 WrapperNode [2023-12-16 09:06:20,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 09:06:20,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 09:06:20,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 09:06:20,468 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 09:06:20,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,583 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 998 [2023-12-16 09:06:20,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 09:06:20,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 09:06:20,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 09:06:20,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 09:06:20,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,635 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 09:06:20,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,658 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 09:06:20,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 09:06:20,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 09:06:20,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 09:06:20,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (1/1) ... [2023-12-16 09:06:20,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:06:20,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 09:06:20,721 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 09:06:20,741 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 09:06:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 09:06:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 09:06:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 09:06:20,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 09:06:20,808 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 09:06:20,810 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 09:06:27,073 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 09:06:27,125 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 09:06:27,125 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 09:06:27,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:06:27 BoogieIcfgContainer [2023-12-16 09:06:27,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 09:06:27,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 09:06:27,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 09:06:27,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 09:06:27,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:06:19" (1/3) ... [2023-12-16 09:06:27,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5840cbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:06:27, skipping insertion in model container [2023-12-16 09:06:27,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:06:20" (2/3) ... [2023-12-16 09:06:27,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5840cbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:06:27, skipping insertion in model container [2023-12-16 09:06:27,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:06:27" (3/3) ... [2023-12-16 09:06:27,132 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label07.c [2023-12-16 09:06:27,144 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 09:06:27,144 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 09:06:27,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 09:06:27,196 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;@3271cb7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 09:06:27,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 09:06:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 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 09:06:27,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 09:06:27,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:06:27,207 INFO L195 NwaCegarLoop]: trace histogram [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 09:06:27,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:06:27,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:06:27,211 INFO L85 PathProgramCache]: Analyzing trace with hash 160569091, now seen corresponding path program 1 times [2023-12-16 09:06:27,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:06:27,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354894820] [2023-12-16 09:06:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:06:27,224 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 09:06:27,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:06:27,226 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 09:06:27,234 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 09:06:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:06:27,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 09:06:27,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:06:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:06:27,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:06:27,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:06:27,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354894820] [2023-12-16 09:06:27,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354894820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:06:27,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:06:27,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:06:27,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920488396] [2023-12-16 09:06:27,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:06:27,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 09:06:27,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:06:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 09:06:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 09:06:27,322 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 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 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 09:06:27,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:06:27,373 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2023-12-16 09:06:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 09:06:27,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2023-12-16 09:06:27,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:06:27,381 INFO L225 Difference]: With dead ends: 441 [2023-12-16 09:06:27,382 INFO L226 Difference]: Without dead ends: 219 [2023-12-16 09:06:27,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 09:06:27,386 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:06:27,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:06:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-16 09:06:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-12-16 09:06:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 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 09:06:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2023-12-16 09:06:27,417 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 22 [2023-12-16 09:06:27,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:06:27,417 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2023-12-16 09:06:27,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 09:06:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2023-12-16 09:06:27,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 09:06:27,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:06:27,418 INFO L195 NwaCegarLoop]: trace histogram [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 09:06:27,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 09:06:27,621 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 09:06:27,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:06:27,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:06:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1735526354, now seen corresponding path program 1 times [2023-12-16 09:06:27,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:06:27,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232861731] [2023-12-16 09:06:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:06:27,623 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 09:06:27,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:06:27,625 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 09:06:27,630 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 09:06:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:06:27,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:06:27,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:06:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:06:27,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:06:27,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:06:27,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232861731] [2023-12-16 09:06:27,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232861731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:06:27,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:06:27,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:06:27,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238370007] [2023-12-16 09:06:27,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:06:27,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:06:27,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:06:27,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:06:27,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:06:27,694 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 09:06:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:06:35,237 INFO L93 Difference]: Finished difference Result 634 states and 1036 transitions. [2023-12-16 09:06:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:06:35,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2023-12-16 09:06:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:06:35,249 INFO L225 Difference]: With dead ends: 634 [2023-12-16 09:06:35,249 INFO L226 Difference]: Without dead ends: 416 [2023-12-16 09:06:35,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:06:35,251 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 179 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-16 09:06:35,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 137 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-12-16 09:06:35,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-12-16 09:06:35,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 407. [2023-12-16 09:06:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.4852216748768472) internal successors, (603), 406 states have internal predecessors, (603), 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 09:06:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 603 transitions. [2023-12-16 09:06:35,273 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 603 transitions. Word has length 22 [2023-12-16 09:06:35,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:06:35,273 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 603 transitions. [2023-12-16 09:06:35,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 09:06:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 603 transitions. [2023-12-16 09:06:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-16 09:06:35,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:06:35,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:35,278 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 09:06:35,477 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 09:06:35,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:06:35,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:06:35,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1135024496, now seen corresponding path program 1 times [2023-12-16 09:06:35,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:06:35,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908725715] [2023-12-16 09:06:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:06:35,479 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 09:06:35,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:06:35,481 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 09:06:35,483 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 09:06:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:06:35,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:06:35,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:06:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:06:35,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:06:35,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:06:35,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908725715] [2023-12-16 09:06:35,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908725715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:06:35,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:06:35,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:06:35,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882009999] [2023-12-16 09:06:35,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:06:35,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:06:35,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:06:35,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:06:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:06:35,759 INFO L87 Difference]: Start difference. First operand 407 states and 603 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 09:06:44,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:06:44,426 INFO L93 Difference]: Finished difference Result 1189 states and 1768 transitions. [2023-12-16 09:06:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:06:44,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 88 [2023-12-16 09:06:44,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:06:44,437 INFO L225 Difference]: With dead ends: 1189 [2023-12-16 09:06:44,437 INFO L226 Difference]: Without dead ends: 783 [2023-12-16 09:06:44,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:06:44,440 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 138 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-16 09:06:44,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 169 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-16 09:06:44,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-12-16 09:06:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 780. [2023-12-16 09:06:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 1.3478818998716302) internal successors, (1050), 779 states have internal predecessors, (1050), 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 09:06:44,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1050 transitions. [2023-12-16 09:06:44,472 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1050 transitions. Word has length 88 [2023-12-16 09:06:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:06:44,472 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1050 transitions. [2023-12-16 09:06:44,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 09:06:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1050 transitions. [2023-12-16 09:06:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 09:06:44,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:06:44,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:44,492 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 09:06:44,692 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 09:06:44,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:06:44,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:06:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash 793960960, now seen corresponding path program 1 times [2023-12-16 09:06:44,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:06:44,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853299749] [2023-12-16 09:06:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:06:44,694 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 09:06:44,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:06:44,696 INFO L229 MonitoredProcess]: Starting monitored process 5 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 09:06:44,714 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 (5)] Waiting until timeout for monitored process [2023-12-16 09:06:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:06:44,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:06:44,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:06:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:06:44,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:06:44,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:06:44,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853299749] [2023-12-16 09:06:44,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853299749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:06:44,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:06:44,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:06:44,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586003283] [2023-12-16 09:06:44,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:06:44,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:06:44,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:06:44,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:06:44,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:06:44,921 INFO L87 Difference]: Start difference. First operand 780 states and 1050 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 09:06:52,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:06:52,872 INFO L93 Difference]: Finished difference Result 1928 states and 2650 transitions. [2023-12-16 09:06:52,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:06:52,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 93 [2023-12-16 09:06:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:06:52,883 INFO L225 Difference]: With dead ends: 1928 [2023-12-16 09:06:52,883 INFO L226 Difference]: Without dead ends: 1149 [2023-12-16 09:06:52,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:06:52,887 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-16 09:06:52,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 152 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-16 09:06:52,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2023-12-16 09:06:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2023-12-16 09:06:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 1.2569686411149825) internal successors, (1443), 1148 states have internal predecessors, (1443), 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 09:06:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1443 transitions. [2023-12-16 09:06:52,917 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1443 transitions. Word has length 93 [2023-12-16 09:06:52,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:06:52,917 INFO L495 AbstractCegarLoop]: Abstraction has 1149 states and 1443 transitions. [2023-12-16 09:06:52,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 09:06:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1443 transitions. [2023-12-16 09:06:52,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-16 09:06:52,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:06:52,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:06:52,928 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 (5)] Forceful destruction successful, exit code 0 [2023-12-16 09:06:53,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /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 09:06:53,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:06:53,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:06:53,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1067975776, now seen corresponding path program 1 times [2023-12-16 09:06:53,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:06:53,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171292802] [2023-12-16 09:06:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:06:53,129 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 09:06:53,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:06:53,130 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:06:53,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 09:06:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:06:53,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 09:06:53,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:06:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:06:53,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 09:06:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:06:53,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:06:53,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171292802] [2023-12-16 09:06:53,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171292802] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 09:06:53,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 09:06:53,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 09:06:53,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056444456] [2023-12-16 09:06:53,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:06:53,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:06:53,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:06:53,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:06:53,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 09:06:53,722 INFO L87 Difference]: Start difference. First operand 1149 states and 1443 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 09:07:12,775 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 [] [2023-12-16 09:07:14,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:07:14,606 INFO L93 Difference]: Finished difference Result 2671 states and 3488 transitions. [2023-12-16 09:07:14,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:07:14,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 149 [2023-12-16 09:07:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:07:14,619 INFO L225 Difference]: With dead ends: 2671 [2023-12-16 09:07:14,619 INFO L226 Difference]: Without dead ends: 1891 [2023-12-16 09:07:14,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 09:07:14,621 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 182 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 145 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2023-12-16 09:07:14,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 344 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 508 Invalid, 1 Unknown, 0 Unchecked, 20.8s Time] [2023-12-16 09:07:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2023-12-16 09:07:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1891. [2023-12-16 09:07:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 1.2158730158730158) internal successors, (2298), 1890 states have internal predecessors, (2298), 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 09:07:14,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2298 transitions. [2023-12-16 09:07:14,647 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2298 transitions. Word has length 149 [2023-12-16 09:07:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:07:14,647 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 2298 transitions. [2023-12-16 09:07:14,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 09:07:14,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2298 transitions. [2023-12-16 09:07:14,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 09:07:14,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:07:14,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:14,654 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 (6)] Ended with exit code 0 [2023-12-16 09:07:14,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:07:14,854 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:07:14,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:07:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash 357254552, now seen corresponding path program 1 times [2023-12-16 09:07:14,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:07:14,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332047144] [2023-12-16 09:07:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:07:14,855 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 09:07:14,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:07:14,856 INFO L229 MonitoredProcess]: Starting monitored process 7 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 09:07:14,860 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 (7)] Waiting until timeout for monitored process [2023-12-16 09:07:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:07:14,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 09:07:14,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:07:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 41 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:07:15,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 09:07:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:07:17,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:07:17,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332047144] [2023-12-16 09:07:17,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332047144] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 09:07:17,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 09:07:17,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 09:07:17,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295737101] [2023-12-16 09:07:17,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:07:17,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:07:17,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:07:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:07:17,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 09:07:17,753 INFO L87 Difference]: Start difference. First operand 1891 states and 2298 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) Received shutdown request... [2023-12-16 09:07:31,693 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 09:07:31,699 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 [2023-12-16 09:07:31,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:07:31,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 09:07:31,756 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 148 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-16 09:07:31,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 37 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2023-12-16 09:07:31,757 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 09:07:31,766 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 (7)] Forceful destruction successful, exit code 0 [2023-12-16 09:07:31,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 09:07:31,959 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1891states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (2829 states constructed, input type IntersectNwa). [2023-12-16 09:07:31,963 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-16 09:07:31,964 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 09:07:31,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 09:07:31 BoogieIcfgContainer [2023-12-16 09:07:31,966 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 09:07:31,966 INFO L158 Benchmark]: Toolchain (without parser) took 72065.92ms. Allocated memory was 293.6MB in the beginning and 402.7MB in the end (delta: 109.1MB). Free memory was 239.6MB in the beginning and 149.5MB in the end (delta: 90.1MB). Peak memory consumption was 200.7MB. Max. memory is 8.0GB. [2023-12-16 09:07:31,966 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 175.1MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 09:07:31,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.84ms. Allocated memory is still 293.6MB. Free memory was 239.1MB in the beginning and 186.2MB in the end (delta: 52.9MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2023-12-16 09:07:31,967 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.25ms. Allocated memory is still 293.6MB. Free memory was 186.2MB in the beginning and 176.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 09:07:31,967 INFO L158 Benchmark]: Boogie Preprocessor took 101.34ms. Allocated memory is still 293.6MB. Free memory was 176.7MB in the beginning and 167.3MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 09:07:31,967 INFO L158 Benchmark]: RCFGBuilder took 6439.98ms. Allocated memory is still 293.6MB. Free memory was 167.3MB in the beginning and 222.4MB in the end (delta: -55.1MB). Peak memory consumption was 57.6MB. Max. memory is 8.0GB. [2023-12-16 09:07:31,967 INFO L158 Benchmark]: TraceAbstraction took 64838.46ms. Allocated memory was 293.6MB in the beginning and 402.7MB in the end (delta: 109.1MB). Free memory was 221.9MB in the beginning and 149.5MB in the end (delta: 72.4MB). Peak memory consumption was 181.9MB. Max. memory is 8.0GB. [2023-12-16 09:07:31,972 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 175.1MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 565.84ms. Allocated memory is still 293.6MB. Free memory was 239.1MB in the beginning and 186.2MB in the end (delta: 52.9MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 116.25ms. Allocated memory is still 293.6MB. Free memory was 186.2MB in the beginning and 176.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 101.34ms. Allocated memory is still 293.6MB. Free memory was 176.7MB in the beginning and 167.3MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 6439.98ms. Allocated memory is still 293.6MB. Free memory was 167.3MB in the beginning and 222.4MB in the end (delta: -55.1MB). Peak memory consumption was 57.6MB. Max. memory is 8.0GB. * TraceAbstraction took 64838.46ms. Allocated memory was 293.6MB in the beginning and 402.7MB in the end (delta: 109.1MB). Free memory was 221.9MB in the beginning and 149.5MB in the end (delta: 72.4MB). Peak memory consumption was 181.9MB. 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: 85]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 85). Cancelled while NwaCegarLoop was constructing difference of abstraction (1891states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (2829 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 64.8s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 59.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 795 SdHoareTripleChecker+Valid, 58.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 795 mSDsluCounter, 1194 SdHoareTripleChecker+Invalid, 52.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 107 mSDsCounter, 562 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2679 IncrementalHoareTripleChecker+Invalid, 3242 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 562 mSolverCounterUnsat, 1087 mSDtfsCounter, 2679 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 921 GetRequests, 912 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1891occurred in iteration=5, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 577 NumberOfCodeBlocks, 577 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 921 ConstructedInterpolants, 0 QuantifiedInterpolants, 5500 SizeOfPredicates, 1 NumberOfNonLiveVariables, 828 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 210/298 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