./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --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 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 18:36:25,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 18:36:25,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 18:36:25,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 18:36:25,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 18:36:25,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 18:36:25,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 18:36:25,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 18:36:25,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 18:36:25,829 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 18:36:25,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 18:36:25,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 18:36:25,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 18:36:25,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 18:36:25,831 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 18:36:25,831 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 18:36:25,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 18:36:25,832 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 18:36:25,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 18:36:25,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 18:36:25,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 18:36:25,836 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 18:36:25,836 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 18:36:25,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 18:36:25,837 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 18:36:25,837 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 18:36:25,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 18:36:25,837 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 18:36:25,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 18:36:25,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 18:36:25,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 18:36:25,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 18:36:25,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:36:25,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 18:36:25,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 18:36:25,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 18:36:25,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 18:36:25,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 18:36:25,843 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 18:36:25,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 18:36:25,843 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 18:36:25,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 18:36:25,844 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 18:36:26,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 18:36:26,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 18:36:26,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 18:36:26,150 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 18:36:26,151 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 18:36:26,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2024-09-17 18:36:27,639 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 18:36:27,852 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 18:36:27,853 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2024-09-17 18:36:27,861 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/610b84b81/a9dc079082414601903ce58079ede92a/FLAGf5fe8e68d [2024-09-17 18:36:27,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/610b84b81/a9dc079082414601903ce58079ede92a [2024-09-17 18:36:27,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 18:36:27,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 18:36:27,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 18:36:27,882 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 18:36:27,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 18:36:27,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:36:27" (1/1) ... [2024-09-17 18:36:27,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b768a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:27, skipping insertion in model container [2024-09-17 18:36:27,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:36:27" (1/1) ... [2024-09-17 18:36:27,920 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 18:36:28,061 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c[597,610] [2024-09-17 18:36:28,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:36:28,096 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 18:36:28,107 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c[597,610] [2024-09-17 18:36:28,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:36:28,130 INFO L204 MainTranslator]: Completed translation [2024-09-17 18:36:28,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28 WrapperNode [2024-09-17 18:36:28,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 18:36:28,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 18:36:28,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 18:36:28,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 18:36:28,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,150 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 18:36:28,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 18:36:28,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 18:36:28,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 18:36:28,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 18:36:28,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,175 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]. [2024-09-17 18:36:28,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,181 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,182 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,183 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 18:36:28,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 18:36:28,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 18:36:28,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 18:36:28,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (1/1) ... [2024-09-17 18:36:28,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:36:28,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:28,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-17 18:36:28,275 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-17 18:36:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 18:36:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 18:36:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 18:36:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 18:36:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 18:36:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 18:36:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 18:36:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 18:36:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 18:36:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 18:36:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 18:36:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 18:36:28,375 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 18:36:28,377 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 18:36:28,531 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-17 18:36:28,531 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 18:36:28,551 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 18:36:28,551 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-17 18:36:28,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:36:28 BoogieIcfgContainer [2024-09-17 18:36:28,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 18:36:28,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 18:36:28,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 18:36:28,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 18:36:28,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 06:36:27" (1/3) ... [2024-09-17 18:36:28,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc7a754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:36:28, skipping insertion in model container [2024-09-17 18:36:28,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:28" (2/3) ... [2024-09-17 18:36:28,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc7a754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:36:28, skipping insertion in model container [2024-09-17 18:36:28,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:36:28" (3/3) ... [2024-09-17 18:36:28,563 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound2.c [2024-09-17 18:36:28,579 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 18:36:28,580 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 18:36:28,655 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 18:36:28,666 INFO L336 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=All, 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;@12d877fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 18:36:28,666 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 18:36:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 18:36:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-17 18:36:28,681 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:28,682 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:28,682 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:28,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1345059158, now seen corresponding path program 1 times [2024-09-17 18:36:28,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:28,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265056758] [2024-09-17 18:36:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:28,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:28,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:36:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:28,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:36:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:28,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:36:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:36:28,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:28,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265056758] [2024-09-17 18:36:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265056758] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:36:28,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:36:28,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 18:36:28,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399692345] [2024-09-17 18:36:28,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:36:28,882 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 18:36:28,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:28,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 18:36:28,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:36:28,925 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 18:36:28,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:28,949 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2024-09-17 18:36:28,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 18:36:28,952 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-17 18:36:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:28,959 INFO L225 Difference]: With dead ends: 54 [2024-09-17 18:36:28,959 INFO L226 Difference]: Without dead ends: 26 [2024-09-17 18:36:28,963 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:36:28,967 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:28,969 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:36:28,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-17 18:36:29,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-17 18:36:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-17 18:36:29,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-17 18:36:29,010 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 22 [2024-09-17 18:36:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:29,011 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-17 18:36:29,011 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 18:36:29,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-17 18:36:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-17 18:36:29,018 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:29,018 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:29,018 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 18:36:29,019 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:29,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash 745253850, now seen corresponding path program 1 times [2024-09-17 18:36:29,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:29,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917698124] [2024-09-17 18:36:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:29,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413621695] [2024-09-17 18:36:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:29,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:29,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:29,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:29,087 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 18:36:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:29,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-17 18:36:29,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:36:29,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:36:29,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:29,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917698124] [2024-09-17 18:36:29,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:29,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413621695] [2024-09-17 18:36:29,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413621695] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:36:29,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:36:29,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-17 18:36:29,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164665402] [2024-09-17 18:36:29,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:36:29,294 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 18:36:29,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:29,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 18:36:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:36:29,295 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-17 18:36:29,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:29,436 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-09-17 18:36:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 18:36:29,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2024-09-17 18:36:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:29,439 INFO L225 Difference]: With dead ends: 38 [2024-09-17 18:36:29,439 INFO L226 Difference]: Without dead ends: 36 [2024-09-17 18:36:29,439 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-17 18:36:29,441 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:29,441 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:36:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-17 18:36:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2024-09-17 18:36:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-17 18:36:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-17 18:36:29,457 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2024-09-17 18:36:29,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:29,459 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-17 18:36:29,459 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-17 18:36:29,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:29,460 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-17 18:36:29,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-17 18:36:29,462 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:29,463 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:29,482 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 18:36:29,667 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:29,668 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:29,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:29,669 INFO L85 PathProgramCache]: Analyzing trace with hash -291852925, now seen corresponding path program 1 times [2024-09-17 18:36:29,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:29,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814425471] [2024-09-17 18:36:29,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:29,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:29,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:36:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:29,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:36:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:29,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:36:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:29,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 18:36:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-17 18:36:30,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:30,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814425471] [2024-09-17 18:36:30,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814425471] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:36:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426780584] [2024-09-17 18:36:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:30,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:30,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:30,026 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:30,030 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 18:36:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:30,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-17 18:36:30,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:36:30,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:36:30,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426780584] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:36:30,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 18:36:30,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-09-17 18:36:30,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71076477] [2024-09-17 18:36:30,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:36:30,273 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 18:36:30,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 18:36:30,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-09-17 18:36:30,275 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 18:36:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:30,378 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-09-17 18:36:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 18:36:30,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-09-17 18:36:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:30,380 INFO L225 Difference]: With dead ends: 42 [2024-09-17 18:36:30,380 INFO L226 Difference]: Without dead ends: 34 [2024-09-17 18:36:30,381 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-09-17 18:36:30,382 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:30,382 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:36:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-17 18:36:30,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-09-17 18:36:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-17 18:36:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-09-17 18:36:30,399 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2024-09-17 18:36:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:30,399 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-09-17 18:36:30,399 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 18:36:30,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:30,400 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-09-17 18:36:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-17 18:36:30,401 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:30,401 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:30,422 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-17 18:36:30,601 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:30,602 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:30,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1466394034, now seen corresponding path program 1 times [2024-09-17 18:36:30,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:30,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461123471] [2024-09-17 18:36:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:30,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434069883] [2024-09-17 18:36:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:30,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:30,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:30,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:30,634 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 18:36:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:30,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-17 18:36:30,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:36:31,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:36:31,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:31,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461123471] [2024-09-17 18:36:31,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:31,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434069883] [2024-09-17 18:36:31,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434069883] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:31,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:36:31,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 16 [2024-09-17 18:36:31,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673085172] [2024-09-17 18:36:31,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:31,292 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-17 18:36:31,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:31,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-17 18:36:31,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-09-17 18:36:31,293 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-17 18:36:31,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:31,911 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2024-09-17 18:36:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-17 18:36:31,913 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 31 [2024-09-17 18:36:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:31,914 INFO L225 Difference]: With dead ends: 64 [2024-09-17 18:36:31,916 INFO L226 Difference]: Without dead ends: 36 [2024-09-17 18:36:31,917 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2024-09-17 18:36:31,918 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:31,918 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 153 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 18:36:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-17 18:36:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-17 18:36:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-17 18:36:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-09-17 18:36:31,929 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 31 [2024-09-17 18:36:31,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:31,929 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-09-17 18:36:31,929 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-17 18:36:31,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-09-17 18:36:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-17 18:36:31,931 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:31,931 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:31,948 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-17 18:36:32,135 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:32,136 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:32,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash -697702451, now seen corresponding path program 1 times [2024-09-17 18:36:32,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:32,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398326409] [2024-09-17 18:36:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:32,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:32,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550580629] [2024-09-17 18:36:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:32,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:32,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:32,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:32,163 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 18:36:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:32,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-17 18:36:32,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-17 18:36:32,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-17 18:36:33,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:33,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398326409] [2024-09-17 18:36:33,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:33,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550580629] [2024-09-17 18:36:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550580629] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:33,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:36:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2024-09-17 18:36:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901639401] [2024-09-17 18:36:33,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:33,255 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-17 18:36:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:33,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-17 18:36:33,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-17 18:36:33,257 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-17 18:36:35,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:35,303 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2024-09-17 18:36:35,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-17 18:36:35,303 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 38 [2024-09-17 18:36:35,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:35,304 INFO L225 Difference]: With dead ends: 54 [2024-09-17 18:36:35,305 INFO L226 Difference]: Without dead ends: 46 [2024-09-17 18:36:35,306 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2024-09-17 18:36:35,306 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:35,307 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 169 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-17 18:36:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-17 18:36:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-09-17 18:36:35,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-17 18:36:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2024-09-17 18:36:35,323 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 38 [2024-09-17 18:36:35,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:35,324 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2024-09-17 18:36:35,324 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-17 18:36:35,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:35,325 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2024-09-17 18:36:35,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-17 18:36:35,326 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:35,326 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:35,348 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-17 18:36:35,530 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:35,531 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:35,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1873598157, now seen corresponding path program 1 times [2024-09-17 18:36:35,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:35,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953873607] [2024-09-17 18:36:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:35,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:36:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:35,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:36:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:35,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:36:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:35,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 18:36:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:35,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:36:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:35,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-17 18:36:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:35,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:36:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-17 18:36:35,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:35,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953873607] [2024-09-17 18:36:35,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953873607] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:36:35,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184434808] [2024-09-17 18:36:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:35,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:35,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:35,690 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:35,691 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 18:36:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:35,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-17 18:36:35,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-17 18:36:35,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-17 18:36:35,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184434808] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:35,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:36:35,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-09-17 18:36:35,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702208640] [2024-09-17 18:36:35,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:35,881 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 18:36:35,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 18:36:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:36:35,883 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-17 18:36:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:35,986 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2024-09-17 18:36:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 18:36:35,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 56 [2024-09-17 18:36:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:35,989 INFO L225 Difference]: With dead ends: 80 [2024-09-17 18:36:35,990 INFO L226 Difference]: Without dead ends: 61 [2024-09-17 18:36:35,991 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-17 18:36:35,992 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:35,993 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 114 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:36:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-17 18:36:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-09-17 18:36:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 12 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 18:36:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2024-09-17 18:36:36,027 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 56 [2024-09-17 18:36:36,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:36,029 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2024-09-17 18:36:36,029 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-17 18:36:36,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:36,030 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2024-09-17 18:36:36,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-17 18:36:36,031 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:36,034 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:36,052 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-17 18:36:36,234 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-17 18:36:36,235 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:36,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:36,235 INFO L85 PathProgramCache]: Analyzing trace with hash 68159823, now seen corresponding path program 2 times [2024-09-17 18:36:36,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:36,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436622606] [2024-09-17 18:36:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:36,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:36,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:36:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:36,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:36:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:36,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:36:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:36,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 18:36:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:36,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:36:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:36,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-17 18:36:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:36,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:36:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-17 18:36:36,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436622606] [2024-09-17 18:36:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436622606] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:36:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552461582] [2024-09-17 18:36:36,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:36:36,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:36,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:36,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:36,536 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 18:36:36,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:36:36,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:36:36,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-17 18:36:36,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-17 18:36:36,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-17 18:36:37,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552461582] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:37,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:36:37,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-09-17 18:36:37,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250798018] [2024-09-17 18:36:37,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:37,092 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-17 18:36:37,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-17 18:36:37,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2024-09-17 18:36:37,094 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 14 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-09-17 18:36:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:37,778 INFO L93 Difference]: Finished difference Result 84 states and 100 transitions. [2024-09-17 18:36:37,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-17 18:36:37,779 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 14 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 56 [2024-09-17 18:36:37,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:37,780 INFO L225 Difference]: With dead ends: 84 [2024-09-17 18:36:37,780 INFO L226 Difference]: Without dead ends: 78 [2024-09-17 18:36:37,781 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=1195, Unknown=0, NotChecked=0, Total=1482 [2024-09-17 18:36:37,782 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 11 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:37,782 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 182 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:36:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-17 18:36:37,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70. [2024-09-17 18:36:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 14 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-17 18:36:37,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2024-09-17 18:36:37,861 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 56 [2024-09-17 18:36:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:37,862 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2024-09-17 18:36:37,862 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 14 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-09-17 18:36:37,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:37,863 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2024-09-17 18:36:37,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-17 18:36:37,864 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:37,864 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:37,882 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-17 18:36:38,068 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:38,069 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:38,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:38,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1701302009, now seen corresponding path program 3 times [2024-09-17 18:36:38,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:38,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575442342] [2024-09-17 18:36:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:38,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:38,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:36:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:38,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:36:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:38,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:36:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:38,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 18:36:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:38,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:36:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:38,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-17 18:36:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:38,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:36:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:38,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-17 18:36:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-17 18:36:38,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575442342] [2024-09-17 18:36:38,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575442342] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:36:38,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962811609] [2024-09-17 18:36:38,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:36:38,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:38,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:38,634 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:38,636 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-17 18:36:38,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-17 18:36:38,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:36:38,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-17 18:36:38,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-09-17 18:36:39,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-17 18:36:42,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962811609] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:42,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:36:42,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 12] total 37 [2024-09-17 18:36:42,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66709493] [2024-09-17 18:36:42,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:42,853 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-17 18:36:42,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-17 18:36:42,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2024-09-17 18:36:42,855 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 37 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 13 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) [2024-09-17 18:36:53,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-17 18:37:00,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:00,969 INFO L93 Difference]: Finished difference Result 95 states and 116 transitions. [2024-09-17 18:37:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-17 18:37:00,969 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 13 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) Word has length 65 [2024-09-17 18:37:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:00,970 INFO L225 Difference]: With dead ends: 95 [2024-09-17 18:37:00,970 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 18:37:00,972 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=752, Invalid=3802, Unknown=2, NotChecked=0, Total=4556 [2024-09-17 18:37:00,973 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:00,973 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 435 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 895 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2024-09-17 18:37:00,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 18:37:00,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 18:37:00,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 18:37:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 18:37:00,974 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2024-09-17 18:37:00,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:00,975 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 18:37:00,975 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 13 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) [2024-09-17 18:37:00,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:00,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 18:37:00,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 18:37:00,978 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 18:37:00,991 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-17 18:37:01,179 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:01,182 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2024-09-17 18:37:01,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 18:37:05,243 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 18:37:05,252 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-17 18:37:05,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 06:37:05 BoogieIcfgContainer [2024-09-17 18:37:05,268 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 18:37:05,270 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-17 18:37:05,270 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-17 18:37:05,270 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-17 18:37:05,270 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:36:28" (3/4) ... [2024-09-17 18:37:05,273 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-17 18:37:05,337 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-17 18:37:05,337 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-17 18:37:05,338 INFO L158 Benchmark]: Toolchain (without parser) took 37457.37ms. Allocated memory was 172.0MB in the beginning and 264.2MB in the end (delta: 92.3MB). Free memory was 105.4MB in the beginning and 145.2MB in the end (delta: -39.8MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2024-09-17 18:37:05,338 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 18:37:05,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.95ms. Allocated memory is still 172.0MB. Free memory was 105.3MB in the beginning and 93.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 18:37:05,339 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.30ms. Allocated memory is still 172.0MB. Free memory was 93.6MB in the beginning and 92.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 18:37:05,339 INFO L158 Benchmark]: Boogie Preprocessor took 33.35ms. Allocated memory is still 172.0MB. Free memory was 92.5MB in the beginning and 90.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 18:37:05,339 INFO L158 Benchmark]: RCFGBuilder took 366.55ms. Allocated memory is still 172.0MB. Free memory was 90.7MB in the beginning and 133.2MB in the end (delta: -42.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2024-09-17 18:37:05,339 INFO L158 Benchmark]: TraceAbstraction took 36714.19ms. Allocated memory was 172.0MB in the beginning and 264.2MB in the end (delta: 92.3MB). Free memory was 132.5MB in the beginning and 148.3MB in the end (delta: -15.8MB). Peak memory consumption was 141.9MB. Max. memory is 16.1GB. [2024-09-17 18:37:05,340 INFO L158 Benchmark]: Witness Printer took 67.60ms. Allocated memory is still 264.2MB. Free memory was 147.3MB in the beginning and 145.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 18:37:05,342 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.95ms. Allocated memory is still 172.0MB. Free memory was 105.3MB in the beginning and 93.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.30ms. Allocated memory is still 172.0MB. Free memory was 93.6MB in the beginning and 92.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.35ms. Allocated memory is still 172.0MB. Free memory was 92.5MB in the beginning and 90.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 366.55ms. Allocated memory is still 172.0MB. Free memory was 90.7MB in the beginning and 133.2MB in the end (delta: -42.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * TraceAbstraction took 36714.19ms. Allocated memory was 172.0MB in the beginning and 264.2MB in the end (delta: 92.3MB). Free memory was 132.5MB in the beginning and 148.3MB in the end (delta: -15.8MB). Peak memory consumption was 141.9MB. Max. memory is 16.1GB. * Witness Printer took 67.60ms. Allocated memory is still 264.2MB. Free memory was 147.3MB in the beginning and 145.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.6s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 8.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 1260 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1084 mSDsCounter, 121 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1812 IncrementalHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 121 mSolverCounterUnsat, 176 mSDtfsCounter, 1812 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 708 GetRequests, 521 SyntacticMatches, 3 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 18.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=7, InterpolantAutomatonStates: 130, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 616 NumberOfCodeBlocks, 589 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 754 ConstructedInterpolants, 3 QuantifiedInterpolants, 4531 SizeOfPredicates, 23 NumberOfNonLiveVariables, 732 ConjunctsInSsa, 148 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 544/714 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((X <= 2) && ((((long long) Y * 2) + (2 * ((__int128) Y * x))) == (((((__int128) X * y) * 2) + X) + v))) && (0 <= Y)) && (0 <= X)) && (Y <= 2)) - ProcedureContractResult [Line: 10]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-17 18:37:05,386 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE