./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-97.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-97.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 f78f07977a6a6c060ce47508f319b35375a64382f2792ef417cdb466597e7230 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:34:54,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:34:54,165 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:34:54,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:34:54,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:34:54,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:34:54,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:34:54,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:34:54,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:34:54,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:34:54,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:34:54,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:34:54,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:34:54,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:34:54,204 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:34:54,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:34:54,205 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:34:54,205 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:34:54,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:34:54,205 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:34:54,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:34:54,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:34:54,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:34:54,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:34:54,208 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:34:54,208 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:34:54,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:34:54,209 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:34:54,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:34:54,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:34:54,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:34:54,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:34:54,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:34:54,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:34:54,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:34:54,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:34:54,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:34:54,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:34:54,213 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:34:54,213 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:34:54,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:34:54,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:34:54,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f78f07977a6a6c060ce47508f319b35375a64382f2792ef417cdb466597e7230 [2024-11-18 23:34:54,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:34:54,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:34:54,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:34:54,475 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:34:54,475 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:34:54,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-97.i [2024-11-18 23:34:55,996 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:34:56,219 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:34:56,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-97.i [2024-11-18 23:34:56,229 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d09154a23/b09b54b1e29248e98b64c91363fec754/FLAGf83ec5961 [2024-11-18 23:34:56,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d09154a23/b09b54b1e29248e98b64c91363fec754 [2024-11-18 23:34:56,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:34:56,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:34:56,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:34:56,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:34:56,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:34:56,253 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcc7ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56, skipping insertion in model container [2024-11-18 23:34:56,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,286 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:34:56,464 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-97.i[916,929] [2024-11-18 23:34:56,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:34:56,577 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:34:56,591 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-97.i[916,929] [2024-11-18 23:34:56,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:34:56,669 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:34:56,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56 WrapperNode [2024-11-18 23:34:56,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:34:56,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:34:56,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:34:56,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:34:56,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,728 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 184 [2024-11-18 23:34:56,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:34:56,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:34:56,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:34:56,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:34:56,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,743 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,768 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]. [2024-11-18 23:34:56,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,787 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,801 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:34:56,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:34:56,816 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:34:56,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:34:56,817 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (1/1) ... [2024-11-18 23:34:56,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:34:56,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:34:56,851 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) [2024-11-18 23:34:56,857 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 [2024-11-18 23:34:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:34:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:34:56,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:34:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:34:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:34:56,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:34:57,009 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:34:57,014 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:34:57,452 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-18 23:34:57,453 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:34:57,467 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:34:57,469 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:34:57,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:34:57 BoogieIcfgContainer [2024-11-18 23:34:57,470 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:34:57,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:34:57,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:34:57,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:34:57,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:34:56" (1/3) ... [2024-11-18 23:34:57,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f85e547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:34:57, skipping insertion in model container [2024-11-18 23:34:57,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:34:56" (2/3) ... [2024-11-18 23:34:57,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f85e547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:34:57, skipping insertion in model container [2024-11-18 23:34:57,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:34:57" (3/3) ... [2024-11-18 23:34:57,481 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-97.i [2024-11-18 23:34:57,499 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:34:57,499 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:34:57,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:34:57,564 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;@1f03b53e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:34:57,564 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:34:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 54 states have (on average 1.462962962962963) internal successors, (79), 55 states have internal predecessors, (79), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 23:34:57,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 23:34:57,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:34:57,583 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 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] [2024-11-18 23:34:57,584 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:34:57,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:34:57,589 INFO L85 PathProgramCache]: Analyzing trace with hash -526305821, now seen corresponding path program 1 times [2024-11-18 23:34:57,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:34:57,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125223581] [2024-11-18 23:34:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:34:57,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:34:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:34:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-18 23:34:57,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:34:57,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125223581] [2024-11-18 23:34:57,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125223581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:34:57,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781204730] [2024-11-18 23:34:57,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:34:57,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:34:57,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:34:57,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:34:57,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:34:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:34:58,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:34:58,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:34:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-18 23:34:58,222 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:34:58,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781204730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:34:58,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:34:58,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:34:58,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385505157] [2024-11-18 23:34:58,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:34:58,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:34:58,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:34:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:34:58,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:34:58,260 INFO L87 Difference]: Start difference. First operand has 81 states, 54 states have (on average 1.462962962962963) internal successors, (79), 55 states have internal predecessors, (79), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 23:34:58,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:34:58,290 INFO L93 Difference]: Finished difference Result 155 states and 272 transitions. [2024-11-18 23:34:58,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:34:58,292 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 159 [2024-11-18 23:34:58,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:34:58,298 INFO L225 Difference]: With dead ends: 155 [2024-11-18 23:34:58,299 INFO L226 Difference]: Without dead ends: 77 [2024-11-18 23:34:58,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:34:58,304 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:34:58,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:34:58,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-18 23:34:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-18 23:34:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 23:34:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 120 transitions. [2024-11-18 23:34:58,348 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 120 transitions. Word has length 159 [2024-11-18 23:34:58,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:34:58,349 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 120 transitions. [2024-11-18 23:34:58,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 23:34:58,349 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 120 transitions. [2024-11-18 23:34:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 23:34:58,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:34:58,353 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 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] [2024-11-18 23:34:58,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:34:58,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:34:58,555 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:34:58,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:34:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash -179999509, now seen corresponding path program 1 times [2024-11-18 23:34:58,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:34:58,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711666948] [2024-11-18 23:34:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:34:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:34:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:34:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 23:34:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:34:58,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711666948] [2024-11-18 23:34:58,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711666948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:34:58,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:34:58,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:34:58,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883077327] [2024-11-18 23:34:58,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:34:58,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:34:58,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:34:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:34:58,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:34:58,898 INFO L87 Difference]: Start difference. First operand 77 states and 120 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 23:34:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:34:58,992 INFO L93 Difference]: Finished difference Result 216 states and 338 transitions. [2024-11-18 23:34:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:34:58,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 159 [2024-11-18 23:34:58,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:34:58,999 INFO L225 Difference]: With dead ends: 216 [2024-11-18 23:34:58,999 INFO L226 Difference]: Without dead ends: 142 [2024-11-18 23:34:59,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:34:59,001 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 96 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:34:59,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 300 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:34:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-18 23:34:59,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 87. [2024-11-18 23:34:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 61 states have internal predecessors, (88), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 23:34:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 136 transitions. [2024-11-18 23:34:59,017 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 136 transitions. Word has length 159 [2024-11-18 23:34:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:34:59,020 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 136 transitions. [2024-11-18 23:34:59,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 23:34:59,021 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 136 transitions. [2024-11-18 23:34:59,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 23:34:59,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:34:59,025 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 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] [2024-11-18 23:34:59,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:34:59,026 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:34:59,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:34:59,027 INFO L85 PathProgramCache]: Analyzing trace with hash 69351161, now seen corresponding path program 1 times [2024-11-18 23:34:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:34:59,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296640472] [2024-11-18 23:34:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:34:59,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:34:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:34:59,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847936309] [2024-11-18 23:34:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:34:59,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:34:59,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:34:59,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:34:59,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:35:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:35:00,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 23:35:00,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:35:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 528 proven. 105 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2024-11-18 23:35:01,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:35:05,237 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_z_6 Int)) (or (< v_z_6 (mod |c_ULTIMATE.start_step_~stepLocal_6~0#1| 256)) (< 65535 v_z_6) (< (mod (div v_z_6 (mod c_~var_1_7~0 4294967296)) 4294967296) v_z_6))) is different from false [2024-11-18 23:35:30,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:35:30,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296640472] [2024-11-18 23:35:30,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 23:35:30,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847936309] [2024-11-18 23:35:30,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847936309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:35:30,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:35:30,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-18 23:35:30,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335112090] [2024-11-18 23:35:30,753 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 23:35:30,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:35:30,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:35:30,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:35:30,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=119, Unknown=7, NotChecked=22, Total=182 [2024-11-18 23:35:30,755 INFO L87 Difference]: Start difference. First operand 87 states and 136 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-18 23:36:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:36:00,940 INFO L93 Difference]: Finished difference Result 326 states and 482 transitions. [2024-11-18 23:36:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-18 23:36:00,941 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 159 [2024-11-18 23:36:00,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:36:00,943 INFO L225 Difference]: With dead ends: 326 [2024-11-18 23:36:00,943 INFO L226 Difference]: Without dead ends: 242 [2024-11-18 23:36:00,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 56.3s TimeCoverageRelationStatistics Valid=310, Invalid=1013, Unknown=13, NotChecked=70, Total=1406 [2024-11-18 23:36:00,946 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 290 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:36:00,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 402 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 23:36:00,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-18 23:36:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 143. [2024-11-18 23:36:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 112 states have (on average 1.4375) internal successors, (161), 113 states have internal predecessors, (161), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 23:36:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 213 transitions. [2024-11-18 23:36:00,984 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 213 transitions. Word has length 159 [2024-11-18 23:36:00,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:36:00,985 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 213 transitions. [2024-11-18 23:36:00,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-18 23:36:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 213 transitions. [2024-11-18 23:36:00,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 23:36:00,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:36:00,992 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 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] [2024-11-18 23:36:01,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:36:01,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-18 23:36:01,193 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:36:01,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:36:01,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1795679469, now seen corresponding path program 1 times [2024-11-18 23:36:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:36:01,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341129563] [2024-11-18 23:36:01,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:36:01,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:36:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:36:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 57 proven. 12 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-11-18 23:36:02,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:36:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341129563] [2024-11-18 23:36:02,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341129563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:36:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7625675] [2024-11-18 23:36:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:36:02,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:36:02,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:36:02,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:36:02,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:36:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:36:02,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 23:36:02,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:36:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 365 proven. 12 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2024-11-18 23:36:03,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:36:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 57 proven. 12 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-11-18 23:36:04,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7625675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:36:04,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:36:04,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 10 [2024-11-18 23:36:04,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284770211] [2024-11-18 23:36:04,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:36:04,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:36:04,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:36:04,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:36:04,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:36:04,176 INFO L87 Difference]: Start difference. First operand 143 states and 213 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-18 23:36:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:36:07,176 INFO L93 Difference]: Finished difference Result 446 states and 637 transitions. [2024-11-18 23:36:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 23:36:07,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 160 [2024-11-18 23:36:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:36:07,180 INFO L225 Difference]: With dead ends: 446 [2024-11-18 23:36:07,180 INFO L226 Difference]: Without dead ends: 306 [2024-11-18 23:36:07,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 316 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2024-11-18 23:36:07,182 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 249 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:36:07,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 480 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 23:36:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-18 23:36:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 219. [2024-11-18 23:36:07,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 163 states have (on average 1.343558282208589) internal successors, (219), 166 states have internal predecessors, (219), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 23:36:07,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 311 transitions. [2024-11-18 23:36:07,215 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 311 transitions. Word has length 160 [2024-11-18 23:36:07,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:36:07,216 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 311 transitions. [2024-11-18 23:36:07,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-18 23:36:07,216 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 311 transitions. [2024-11-18 23:36:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 23:36:07,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:36:07,218 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 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] [2024-11-18 23:36:07,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 23:36:07,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:36:07,423 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:36:07,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:36:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1546328799, now seen corresponding path program 1 times [2024-11-18 23:36:07,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:36:07,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808315017] [2024-11-18 23:36:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:36:07,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:36:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:36:07,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597671103] [2024-11-18 23:36:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:36:07,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:36:07,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:36:07,629 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:36:07,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:36:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:36:08,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 23:36:08,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:36:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 528 proven. 105 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2024-11-18 23:36:12,090 INFO L311 TraceCheckSpWp]: Computing backward predicates...