./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 00:26:48,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 00:26:48,112 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 00:26:48,119 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 00:26:48,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 00:26:48,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 00:26:48,143 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 00:26:48,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 00:26:48,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 00:26:48,146 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 00:26:48,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 00:26:48,147 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 00:26:48,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 00:26:48,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 00:26:48,149 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 00:26:48,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 00:26:48,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 00:26:48,152 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 00:26:48,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 00:26:48,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 00:26:48,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 00:26:48,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 00:26:48,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 00:26:48,154 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 00:26:48,154 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 00:26:48,154 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 00:26:48,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 00:26:48,155 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 00:26:48,155 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 00:26:48,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 00:26:48,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 00:26:48,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 00:26:48,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 00:26:48,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 00:26:48,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 00:26:48,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 00:26:48,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 00:26:48,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 00:26:48,158 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 00:26:48,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 00:26:48,159 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 00:26:48,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 00:26:48,159 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2024-10-11 00:26:48,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 00:26:48,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 00:26:48,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 00:26:48,466 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 00:26:48,467 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 00:26:48,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c [2024-10-11 00:26:49,956 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 00:26:50,146 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 00:26:50,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c [2024-10-11 00:26:50,164 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/bb1dc6bee/a793c97dc61a4c0ebb72b71512a22e8f/FLAG45947ab2f [2024-10-11 00:26:50,187 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/bb1dc6bee/a793c97dc61a4c0ebb72b71512a22e8f [2024-10-11 00:26:50,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 00:26:50,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 00:26:50,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 00:26:50,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 00:26:50,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 00:26:50,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49874f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50, skipping insertion in model container [2024-10-11 00:26:50,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,228 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 00:26:50,476 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2024-10-11 00:26:50,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 00:26:50,517 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 00:26:50,529 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2024-10-11 00:26:50,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 00:26:50,551 INFO L204 MainTranslator]: Completed translation [2024-10-11 00:26:50,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50 WrapperNode [2024-10-11 00:26:50,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 00:26:50,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 00:26:50,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 00:26:50,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 00:26:50,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,585 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-10-11 00:26:50,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 00:26:50,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 00:26:50,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 00:26:50,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 00:26:50,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,611 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]. [2024-10-11 00:26:50,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,620 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 00:26:50,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 00:26:50,622 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 00:26:50,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 00:26:50,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (1/1) ... [2024-10-11 00:26:50,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 00:26:50,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:26:50,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 00:26:50,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 00:26:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 00:26:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure y [2024-10-11 00:26:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure y [2024-10-11 00:26:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 00:26:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 00:26:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 00:26:50,755 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 00:26:50,757 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 00:26:50,850 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-10-11 00:26:50,850 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 00:26:50,892 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 00:26:50,892 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 00:26:50,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:50 BoogieIcfgContainer [2024-10-11 00:26:50,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 00:26:50,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 00:26:50,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 00:26:50,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 00:26:50,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:26:50" (1/3) ... [2024-10-11 00:26:50,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58289de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:50, skipping insertion in model container [2024-10-11 00:26:50,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:50" (2/3) ... [2024-10-11 00:26:50,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58289de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:50, skipping insertion in model container [2024-10-11 00:26:50,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:50" (3/3) ... [2024-10-11 00:26:50,905 INFO L112 eAbstractionObserver]: Analyzing ICFG water_pid.c [2024-10-11 00:26:50,923 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 00:26:50,923 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 00:26:50,995 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 00:26:51,002 INFO L333 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, 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;@7cb008cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 00:26:51,003 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 00:26:51,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 00:26:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-11 00:26:51,013 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:26:51,014 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:26:51,015 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:26:51,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:26:51,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2031269740, now seen corresponding path program 1 times [2024-10-11 00:26:51,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:26:51,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098181104] [2024-10-11 00:26:51,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:26:51,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:26:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 00:26:51,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 00:26:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 00:26:51,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 00:26:51,209 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 00:26:51,210 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-11 00:26:51,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 00:26:51,217 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-11 00:26:51,241 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 00:26:51,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:26:51 BoogieIcfgContainer [2024-10-11 00:26:51,245 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 00:26:51,246 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 00:26:51,246 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 00:26:51,246 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 00:26:51,247 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:50" (3/4) ... [2024-10-11 00:26:51,250 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-11 00:26:51,251 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 00:26:51,253 INFO L158 Benchmark]: Toolchain (without parser) took 1060.22ms. Allocated memory is still 157.3MB. Free memory was 87.9MB in the beginning and 94.5MB in the end (delta: -6.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 00:26:51,253 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 157.3MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 00:26:51,254 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.78ms. Allocated memory is still 157.3MB. Free memory was 87.7MB in the beginning and 125.3MB in the end (delta: -37.6MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2024-10-11 00:26:51,255 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.57ms. Allocated memory is still 157.3MB. Free memory was 125.3MB in the beginning and 123.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 00:26:51,255 INFO L158 Benchmark]: Boogie Preprocessor took 34.48ms. Allocated memory is still 157.3MB. Free memory was 123.9MB in the beginning and 121.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 00:26:51,256 INFO L158 Benchmark]: RCFGBuilder took 270.57ms. Allocated memory is still 157.3MB. Free memory was 121.8MB in the beginning and 110.6MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 00:26:51,257 INFO L158 Benchmark]: TraceAbstraction took 350.59ms. Allocated memory is still 157.3MB. Free memory was 109.9MB in the beginning and 94.5MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-11 00:26:51,257 INFO L158 Benchmark]: Witness Printer took 5.33ms. Allocated memory is still 157.3MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 00:26:51,260 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 157.3MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.78ms. Allocated memory is still 157.3MB. Free memory was 87.7MB in the beginning and 125.3MB in the end (delta: -37.6MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.57ms. Allocated memory is still 157.3MB. Free memory was 125.3MB in the beginning and 123.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.48ms. Allocated memory is still 157.3MB. Free memory was 123.9MB in the beginning and 121.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.57ms. Allocated memory is still 157.3MB. Free memory was 121.8MB in the beginning and 110.6MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 350.59ms. Allocated memory is still 157.3MB. Free memory was 109.9MB in the beginning and 94.5MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.33ms. Allocated memory is still 157.3MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. * 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 - UnprovableResult [Line: 8]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of to_real at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 41. Possible FailurePath: [L12] static NUM yn = 0; [L14] NUM ui = 0; [L24] NUM yi, yc; [L25] NUM K; [L26] NUM T; [L27] NUM taui; [L28] NUM taud; [L29] NUM ei, sumej, epi; [L30] int i; [L31] T = 1 [L32] taui = 1 [L33] taud = 1 [L34] K = .5 [L35] yc = .5 [L36] CALL, EXPR y(0) VAL [\old(i)=0, \old(yn)=56, yn=56] [L18] yn += ui [L19] return yn; [L36] RET, EXPR y(0) VAL [yn=54] [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 VAL [i=0, yn=54] [L39] COND TRUE i<120 VAL [i=0, yn=54] [L40] CALL, EXPR y(i) VAL [\old(i)=0, \old(yn)=54, yn=54] [L18] yn += ui [L19] return yn; [L40] RET, EXPR y(i) VAL [i=0, yn=53] [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei [L46] CALL __VERIFIER_assert(epi >= -1. && epi <= 1.) [L8] COND TRUE !(cond) VAL [yn=53] [L8] reach_error() VAL [yn=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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: unable to determine feasibility of some traces [2024-10-11 00:26:51,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 00:26:53,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 00:26:53,708 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-11 00:26:53,715 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 00:26:53,716 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 00:26:53,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 00:26:53,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 00:26:53,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 00:26:53,758 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 00:26:53,759 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 00:26:53,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 00:26:53,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 00:26:53,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 00:26:53,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 00:26:53,763 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 00:26:53,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 00:26:53,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 00:26:53,764 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 00:26:53,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 00:26:53,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 00:26:53,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 00:26:53,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 00:26:53,766 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 00:26:53,767 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 00:26:53,767 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 00:26:53,767 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 00:26:53,767 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 00:26:53,768 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 00:26:53,768 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 00:26:53,768 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 00:26:53,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 00:26:53,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 00:26:53,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 00:26:53,774 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 00:26:53,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 00:26:53,775 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 00:26:53,775 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 00:26:53,776 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 00:26:53,776 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 00:26:53,776 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 00:26:53,777 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 00:26:53,777 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 00:26:53,777 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 00:26:53,777 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 00:26:53,778 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 00:26:53,778 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2024-10-11 00:26:54,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 00:26:54,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 00:26:54,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 00:26:54,133 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 00:26:54,133 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 00:26:54,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c [2024-10-11 00:26:55,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 00:26:56,130 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 00:26:56,132 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c [2024-10-11 00:26:56,145 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/60d2c6e75/6bfbb8421f014e01bd5d7b082d2606e0/FLAGb53ee3b5b [2024-10-11 00:26:56,169 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/60d2c6e75/6bfbb8421f014e01bd5d7b082d2606e0 [2024-10-11 00:26:56,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 00:26:56,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 00:26:56,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 00:26:56,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 00:26:56,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 00:26:56,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e22153b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56, skipping insertion in model container [2024-10-11 00:26:56,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,203 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 00:26:56,379 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2024-10-11 00:26:56,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 00:26:56,422 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 00:26:56,435 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2024-10-11 00:26:56,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 00:26:56,472 INFO L204 MainTranslator]: Completed translation [2024-10-11 00:26:56,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56 WrapperNode [2024-10-11 00:26:56,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 00:26:56,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 00:26:56,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 00:26:56,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 00:26:56,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,525 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2024-10-11 00:26:56,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 00:26:56,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 00:26:56,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 00:26:56,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 00:26:56,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,564 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]. [2024-10-11 00:26:56,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 00:26:56,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 00:26:56,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 00:26:56,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 00:26:56,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (1/1) ... [2024-10-11 00:26:56,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 00:26:56,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:26:56,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 00:26:56,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 00:26:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 00:26:56,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 00:26:56,686 INFO L130 BoogieDeclarations]: Found specification of procedure y [2024-10-11 00:26:56,687 INFO L138 BoogieDeclarations]: Found implementation of procedure y [2024-10-11 00:26:56,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 00:26:56,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 00:26:56,771 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 00:26:56,774 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 00:27:02,053 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-10-11 00:27:02,054 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 00:27:02,093 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 00:27:02,094 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 00:27:02,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:02 BoogieIcfgContainer [2024-10-11 00:27:02,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 00:27:02,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 00:27:02,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 00:27:02,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 00:27:02,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:26:56" (1/3) ... [2024-10-11 00:27:02,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b15749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:02, skipping insertion in model container [2024-10-11 00:27:02,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:56" (2/3) ... [2024-10-11 00:27:02,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b15749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:02, skipping insertion in model container [2024-10-11 00:27:02,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:02" (3/3) ... [2024-10-11 00:27:02,103 INFO L112 eAbstractionObserver]: Analyzing ICFG water_pid.c [2024-10-11 00:27:02,119 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 00:27:02,119 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 00:27:02,180 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 00:27:02,186 INFO L333 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, 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;@77663057, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 00:27:02,187 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 00:27:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 00:27:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-11 00:27:02,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:27:02,197 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:27:02,198 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:27:02,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:27:02,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2031269740, now seen corresponding path program 1 times [2024-10-11 00:27:02,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 00:27:02,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633565246] [2024-10-11 00:27:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:27:02,214 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 [2024-10-11 00:27:02,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 00:27:02,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/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) [2024-10-11 00:27:02,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 00:27:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:27:04,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 00:27:04,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:27:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 00:27:18,956 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 00:27:18,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 00:27:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633565246] [2024-10-11 00:27:18,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633565246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:27:18,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 00:27:18,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 00:27:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317171226] [2024-10-11 00:27:18,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:27:18,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 00:27:18,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 00:27:18,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 00:27:18,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 00:27:18,991 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 00:27:29,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:27:33,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:27:37,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:27:41,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:27:45,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:27:49,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:27:52,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:27:57,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:28:01,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:28:06,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:28:10,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:28:14,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:28:18,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 00:28:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:28:18,676 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-10-11 00:28:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 00:28:18,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2024-10-11 00:28:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:28:18,684 INFO L225 Difference]: With dead ends: 32 [2024-10-11 00:28:18,684 INFO L226 Difference]: Without dead ends: 18 [2024-10-11 00:28:18,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-11 00:28:18,689 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.6s IncrementalHoareTripleChecker+Time [2024-10-11 00:28:18,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 12 Unknown, 0 Unchecked, 56.6s Time] [2024-10-11 00:28:18,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-10-11 00:28:18,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-10-11 00:28:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 00:28:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-10-11 00:28:18,721 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2024-10-11 00:28:18,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:28:18,721 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-10-11 00:28:18,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 00:28:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-10-11 00:28:18,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 00:28:18,723 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:28:18,723 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:28:18,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 00:28:18,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/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 [2024-10-11 00:28:18,925 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:28:18,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:28:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash 615196091, now seen corresponding path program 1 times [2024-10-11 00:28:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 00:28:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173382520] [2024-10-11 00:28:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:28:18,927 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 [2024-10-11 00:28:18,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 00:28:18,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/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) [2024-10-11 00:28:18,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 00:28:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:28:22,912 WARN L253 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-11 00:28:22,917 INFO L278 TraceCheckSpWp]: Computing forward predicates...