./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound1.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 ca4ee3dd 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/geo1-ll_unwindbound1.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 387b23f31d6d0897ac5c9cf97636f8e4c9d1a5fe20740b906ac4716e108638d5 --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-ca4ee3d-m [2024-09-20 19:21:46,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:21:46,282 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:21:46,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:21:46,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:21:46,322 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:21:46,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:21:46,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:21:46,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:21:46,326 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:21:46,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:21:46,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:21:46,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:21:46,328 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:21:46,329 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:21:46,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:21:46,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:21:46,331 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:21:46,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:21:46,332 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:21:46,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:21:46,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:21:46,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:21:46,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:21:46,336 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:21:46,336 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:21:46,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:21:46,336 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:21:46,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:21:46,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:21:46,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:21:46,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:21:46,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:21:46,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:21:46,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:21:46,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:21:46,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:21:46,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:21:46,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:21:46,341 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:21:46,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:21:46,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:21:46,342 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 387b23f31d6d0897ac5c9cf97636f8e4c9d1a5fe20740b906ac4716e108638d5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:21:46,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:21:46,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:21:46,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:21:46,632 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:21:46,632 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:21:46,634 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound1.c [2024-09-20 19:21:48,062 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:21:48,262 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:21:48,262 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound1.c [2024-09-20 19:21:48,278 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/976a57463/6d42be9db003402b981e6423fb935f73/FLAG9007db68e [2024-09-20 19:21:48,294 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/976a57463/6d42be9db003402b981e6423fb935f73 [2024-09-20 19:21:48,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:21:48,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:21:48,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:21:48,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:21:48,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:21:48,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f2a182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48, skipping insertion in model container [2024-09-20 19:21:48,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:21:48,491 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/geo1-ll_unwindbound1.c[546,559] [2024-09-20 19:21:48,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:21:48,528 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:21:48,541 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/geo1-ll_unwindbound1.c[546,559] [2024-09-20 19:21:48,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:21:48,564 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:21:48,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48 WrapperNode [2024-09-20 19:21:48,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:21:48,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:21:48,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:21:48,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:21:48,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,585 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:21:48,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:21:48,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:21:48,586 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:21:48,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:21:48,596 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,610 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]. [2024-09-20 19:21:48,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:21:48,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:21:48,622 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:21:48,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:21:48,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (1/1) ... [2024-09-20 19:21:48,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:21:48,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:21:48,664 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) [2024-09-20 19:21:48,668 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 [2024-09-20 19:21:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:21:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 19:21:48,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 19:21:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:21:48,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:21:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:21:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:21:48,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:21:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:21:48,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:21:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 19:21:48,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 19:21:48,770 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:21:48,772 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:21:48,908 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-20 19:21:48,909 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:21:48,934 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:21:48,935 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 19:21:48,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:21:48 BoogieIcfgContainer [2024-09-20 19:21:48,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:21:48,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:21:48,941 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:21:48,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:21:48,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:21:48" (1/3) ... [2024-09-20 19:21:48,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453012d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:21:48, skipping insertion in model container [2024-09-20 19:21:48,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:48" (2/3) ... [2024-09-20 19:21:48,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453012d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:21:48, skipping insertion in model container [2024-09-20 19:21:48,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:21:48" (3/3) ... [2024-09-20 19:21:48,947 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound1.c [2024-09-20 19:21:48,961 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:21:48,961 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:21:49,028 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:21:49,037 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;@2b2d5b0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:21:49,038 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:21:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 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) [2024-09-20 19:21:49,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 19:21:49,058 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:21:49,059 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:21:49,059 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:21:49,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:49,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1666515900, now seen corresponding path program 1 times [2024-09-20 19:21:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:21:49,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055700561] [2024-09-20 19:21:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:49,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:21:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:49,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:21:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:49,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:21:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:49,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:21:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 19:21:49,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:21:49,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055700561] [2024-09-20 19:21:49,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055700561] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:21:49,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:21:49,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 19:21:49,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707590854] [2024-09-20 19:21:49,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:21:49,299 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 19:21:49,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:21:49,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 19:21:49,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 19:21:49,322 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 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 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 19:21:49,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:21:49,432 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2024-09-20 19:21:49,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 19:21:49,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 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 [2024-09-20 19:21:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:21:49,441 INFO L225 Difference]: With dead ends: 51 [2024-09-20 19:21:49,442 INFO L226 Difference]: Without dead ends: 25 [2024-09-20 19:21:49,445 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 19:21:49,451 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:21:49,452 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:21:49,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-20 19:21:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-09-20 19:21:49,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2024-09-20 19:21:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-09-20 19:21:49,494 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2024-09-20 19:21:49,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:21:49,495 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-09-20 19:21:49,495 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 19:21:49,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-09-20 19:21:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 19:21:49,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:21:49,498 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:21:49,499 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:21:49,499 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:21:49,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash -387848543, now seen corresponding path program 1 times [2024-09-20 19:21:49,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:21:49,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138559320] [2024-09-20 19:21:49,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:21:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:21:49,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823976] [2024-09-20 19:21:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:49,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:21:49,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:21:49,537 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) [2024-09-20 19:21:49,539 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 19:21:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:49,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 19:21:49,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:21:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 19:21:49,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 19:21:49,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:21:49,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138559320] [2024-09-20 19:21:49,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:21:49,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823976] [2024-09-20 19:21:49,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823976] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:21:49,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:21:49,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:21:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723039455] [2024-09-20 19:21:49,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:21:49,731 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:21:49,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:21:49,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:21:49,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:21:49,732 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2024-09-20 19:21:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:21:49,798 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-09-20 19:21:49,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:21:49,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 [2024-09-20 19:21:49,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:21:49,800 INFO L225 Difference]: With dead ends: 35 [2024-09-20 19:21:49,800 INFO L226 Difference]: Without dead ends: 33 [2024-09-20 19:21:49,800 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 19:21:49,802 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:21:49,802 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 81 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:21:49,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-20 19:21:49,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-09-20 19:21:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 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) [2024-09-20 19:21:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-09-20 19:21:49,813 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2024-09-20 19:21:49,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:21:49,814 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-09-20 19:21:49,814 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2024-09-20 19:21:49,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:49,815 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-09-20 19:21:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-20 19:21:49,816 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:21:49,816 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:21:49,833 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 19:21:50,020 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 [2024-09-20 19:21:50,021 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:21:50,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:50,022 INFO L85 PathProgramCache]: Analyzing trace with hash 783720481, now seen corresponding path program 1 times [2024-09-20 19:21:50,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:21:50,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434982250] [2024-09-20 19:21:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:50,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:21:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:50,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:21:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:50,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:21:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:50,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:21:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 19:21:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:21:50,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434982250] [2024-09-20 19:21:50,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434982250] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:21:50,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:21:50,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:21:50,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303634320] [2024-09-20 19:21:50,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:21:50,229 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:21:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:21:50,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:21:50,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:21:50,230 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 19:21:50,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:21:50,317 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-09-20 19:21:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 19:21:50,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-20 19:21:50,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:21:50,321 INFO L225 Difference]: With dead ends: 39 [2024-09-20 19:21:50,321 INFO L226 Difference]: Without dead ends: 31 [2024-09-20 19:21:50,322 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 19:21:50,323 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:21:50,324 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 37 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:21:50,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-20 19:21:50,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-20 19:21:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 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) [2024-09-20 19:21:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-09-20 19:21:50,334 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2024-09-20 19:21:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:21:50,335 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-09-20 19:21:50,335 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 19:21:50,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:50,336 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-09-20 19:21:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-20 19:21:50,337 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:21:50,337 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] [2024-09-20 19:21:50,337 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-20 19:21:50,337 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:21:50,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:50,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1293449266, now seen corresponding path program 1 times [2024-09-20 19:21:50,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:21:50,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940944940] [2024-09-20 19:21:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:50,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:21:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:50,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:21:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:50,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:21:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:50,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:21:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:50,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 19:21:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 19:21:50,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:21:50,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940944940] [2024-09-20 19:21:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940944940] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:21:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463237834] [2024-09-20 19:21:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:50,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:21:50,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:21:50,747 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) [2024-09-20 19:21:50,749 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 19:21:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:50,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-20 19:21:50,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:21:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 19:21:50,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:21:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 19:21:51,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463237834] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:21:51,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:21:51,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2024-09-20 19:21:51,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424502969] [2024-09-20 19:21:51,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:21:51,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 19:21:51,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:21:51,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 19:21:51,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-20 19:21:51,285 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 19:21:55,494 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 [] [2024-09-20 19:21:55,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:21:55,590 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-09-20 19:21:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 19:21:55,591 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 29 [2024-09-20 19:21:55,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:21:55,593 INFO L225 Difference]: With dead ends: 45 [2024-09-20 19:21:55,593 INFO L226 Difference]: Without dead ends: 39 [2024-09-20 19:21:55,594 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-09-20 19:21:55,596 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:21:55,596 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 101 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 144 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-09-20 19:21:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-20 19:21:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-20 19:21:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 27 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 19:21:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-09-20 19:21:55,610 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 29 [2024-09-20 19:21:55,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:21:55,611 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-09-20 19:21:55,611 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 19:21:55,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-09-20 19:21:55,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-20 19:21:55,613 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:21:55,613 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:21:55,630 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 19:21:55,817 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:21:55,818 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:21:55,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:55,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1959775791, now seen corresponding path program 1 times [2024-09-20 19:21:55,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:21:55,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712603469] [2024-09-20 19:21:55,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:55,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:21:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:55,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:21:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:55,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:21:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:55,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:21:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:55,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 19:21:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:55,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 19:21:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-20 19:21:55,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:21:55,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712603469] [2024-09-20 19:21:55,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712603469] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:21:55,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252337694] [2024-09-20 19:21:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:55,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:21:55,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:21:55,951 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) [2024-09-20 19:21:55,953 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 19:21:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:56,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 19:21:56,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:21:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-20 19:21:56,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:21:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-20 19:21:56,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252337694] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:21:56,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:21:56,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 8 [2024-09-20 19:21:56,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175395686] [2024-09-20 19:21:56,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:21:56,146 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 19:21:56,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:21:56,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 19:21:56,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-20 19:21:56,147 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-20 19:21:56,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:21:56,235 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2024-09-20 19:21:56,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 19:21:56,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 38 [2024-09-20 19:21:56,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:21:56,236 INFO L225 Difference]: With dead ends: 39 [2024-09-20 19:21:56,236 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 19:21:56,237 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-20 19:21:56,238 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:21:56,239 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:21:56,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 19:21:56,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 19:21:56,241 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) [2024-09-20 19:21:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 19:21:56,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2024-09-20 19:21:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:21:56,242 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 19:21:56,242 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-20 19:21:56,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 19:21:56,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 19:21:56,245 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 19:21:56,261 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 19:21:56,449 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:21:56,453 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-20 19:21:56,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 19:21:56,924 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 19:21:56,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 07:21:56 BoogieIcfgContainer [2024-09-20 19:21:56,942 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 19:21:56,942 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 19:21:56,942 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 19:21:56,943 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 19:21:56,943 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:21:48" (3/4) ... [2024-09-20 19:21:56,946 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 19:21:57,005 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 19:21:57,006 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 19:21:57,007 INFO L158 Benchmark]: Toolchain (without parser) took 8707.08ms. Allocated memory was 157.3MB in the beginning and 197.1MB in the end (delta: 39.8MB). Free memory was 108.8MB in the beginning and 95.6MB in the end (delta: 13.2MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2024-09-20 19:21:57,007 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 157.3MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:21:57,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.25ms. Allocated memory is still 157.3MB. Free memory was 108.8MB in the beginning and 96.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 19:21:57,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.73ms. Allocated memory is still 157.3MB. Free memory was 96.9MB in the beginning and 96.3MB in the end (delta: 621.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:21:57,008 INFO L158 Benchmark]: Boogie Preprocessor took 32.85ms. Allocated memory is still 157.3MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:21:57,008 INFO L158 Benchmark]: RCFGBuilder took 316.85ms. Allocated memory is still 157.3MB. Free memory was 94.2MB in the beginning and 81.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 19:21:57,009 INFO L158 Benchmark]: TraceAbstraction took 8001.10ms. Allocated memory was 157.3MB in the beginning and 197.1MB in the end (delta: 39.8MB). Free memory was 80.7MB in the beginning and 98.8MB in the end (delta: -18.0MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2024-09-20 19:21:57,009 INFO L158 Benchmark]: Witness Printer took 64.34ms. Allocated memory is still 197.1MB. Free memory was 98.8MB in the beginning and 95.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-20 19:21:57,010 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 157.3MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.25ms. Allocated memory is still 157.3MB. Free memory was 108.8MB in the beginning and 96.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.73ms. Allocated memory is still 157.3MB. Free memory was 96.9MB in the beginning and 96.3MB in the end (delta: 621.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.85ms. Allocated memory is still 157.3MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.85ms. Allocated memory is still 157.3MB. Free memory was 94.2MB in the beginning and 81.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8001.10ms. Allocated memory was 157.3MB in the beginning and 197.1MB in the end (delta: 39.8MB). Free memory was 80.7MB in the beginning and 98.8MB in the end (delta: -18.0MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * Witness Printer took 64.34ms. Allocated memory is still 197.1MB. Free memory was 98.8MB in the beginning and 95.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.4s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 274 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 200 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 295 IncrementalHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 74 mSDtfsCounter, 295 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 178 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 223 NumberOfCodeBlocks, 223 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 259 ConstructedInterpolants, 0 QuantifiedInterpolants, 558 SizeOfPredicates, 4 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 89/96 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: 35]: Loop Invariant Derived loop invariant: ((\old(counter) == 0) && ((((z == y) && (x == 1)) && (counter == 0)) || ((1 <= counter) && (((((((__int128) z * x) + ((unsigned __int128) 18446744073709551615U * x)) + ((unsigned __int128) 18446744073709551615U * y)) + 1) % ((unsigned __int128) 1 << 64)) <= 0)))) - ProcedureContractResult [Line: 12]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: (counter == 0) Ensures: (counter == 0) - ProcedureContractResult [Line: 23]: Procedure Contract for main Derived contract for procedure main. Requires: (counter == 0) Ensures: (\old(counter) == 0) - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) == 1) Ensures: (\old(cond) == 1) RESULT: Ultimate proved your program to be correct! [2024-09-20 19:21:57,037 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