./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.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/cohendiv-ll_unwindbound10.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 a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 --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 [2024-09-18 15:57:33,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 15:57:33,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 15:57:34,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 15:57:34,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 15:57:34,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 15:57:34,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 15:57:34,027 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 15:57:34,028 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 15:57:34,029 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 15:57:34,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 15:57:34,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 15:57:34,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 15:57:34,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 15:57:34,031 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 15:57:34,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 15:57:34,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 15:57:34,032 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 15:57:34,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 15:57:34,032 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 15:57:34,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 15:57:34,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 15:57:34,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 15:57:34,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 15:57:34,036 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 15:57:34,036 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 15:57:34,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 15:57:34,037 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 15:57:34,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 15:57:34,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 15:57:34,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 15:57:34,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 15:57:34,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:57:34,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 15:57:34,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 15:57:34,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 15:57:34,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 15:57:34,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 15:57:34,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 15:57:34,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 15:57:34,039 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 15:57:34,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 15:57:34,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 15:57:34,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 15:57:34,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 15:57:34,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 15:57:34,259 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 15:57:34,259 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 15:57:34,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2024-09-18 15:57:35,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 15:57:35,604 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 15:57:35,605 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2024-09-18 15:57:35,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/052c22520/8a506f2ee7804bcb9d93e5f356b6c1eb/FLAGb3448dd15 [2024-09-18 15:57:35,622 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/052c22520/8a506f2ee7804bcb9d93e5f356b6c1eb [2024-09-18 15:57:35,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 15:57:35,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 15:57:35,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 15:57:35,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 15:57:35,632 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 15:57:35,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6784ef1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35, skipping insertion in model container [2024-09-18 15:57:35,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 15:57:35,777 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/cohendiv-ll_unwindbound10.c[576,589] [2024-09-18 15:57:35,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:57:35,794 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 15:57:35,803 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/cohendiv-ll_unwindbound10.c[576,589] [2024-09-18 15:57:35,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:57:35,819 INFO L204 MainTranslator]: Completed translation [2024-09-18 15:57:35,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35 WrapperNode [2024-09-18 15:57:35,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 15:57:35,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 15:57:35,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 15:57:35,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 15:57:35,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,833 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 15:57:35,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 15:57:35,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 15:57:35,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 15:57:35,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 15:57:35,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,841 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,849 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]. [2024-09-18 15:57:35,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 15:57:35,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 15:57:35,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 15:57:35,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 15:57:35,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (1/1) ... [2024-09-18 15:57:35,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:57:35,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:35,881 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) [2024-09-18 15:57:35,882 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 [2024-09-18 15:57:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 15:57:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-18 15:57:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-18 15:57:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 15:57:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 15:57:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 15:57:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 15:57:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 15:57:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 15:57:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 15:57:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 15:57:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 15:57:35,968 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 15:57:35,969 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 15:57:36,107 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-18 15:57:36,108 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 15:57:36,128 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 15:57:36,130 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-18 15:57:36,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:57:36 BoogieIcfgContainer [2024-09-18 15:57:36,130 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 15:57:36,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 15:57:36,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 15:57:36,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 15:57:36,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 03:57:35" (1/3) ... [2024-09-18 15:57:36,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5044091d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:57:36, skipping insertion in model container [2024-09-18 15:57:36,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:35" (2/3) ... [2024-09-18 15:57:36,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5044091d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:57:36, skipping insertion in model container [2024-09-18 15:57:36,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:57:36" (3/3) ... [2024-09-18 15:57:36,139 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound10.c [2024-09-18 15:57:36,151 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 15:57:36,151 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 15:57:36,197 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 15:57:36,202 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;@7587c6c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 15:57:36,205 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 15:57:36,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-18 15:57:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-18 15:57:36,217 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:36,217 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:36,221 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:36,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:36,225 INFO L85 PathProgramCache]: Analyzing trace with hash -166019731, now seen corresponding path program 1 times [2024-09-18 15:57:36,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:36,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188006835] [2024-09-18 15:57:36,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:36,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:36,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:57:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:36,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:57:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:57:36,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:36,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188006835] [2024-09-18 15:57:36,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188006835] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:36,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:36,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-18 15:57:36,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085898205] [2024-09-18 15:57:36,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:36,369 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-18 15:57:36,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:36,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-18 15:57:36,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-18 15:57:36,389 INFO L87 Difference]: Start difference. First operand has 36 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-18 15:57:36,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:36,463 INFO L93 Difference]: Finished difference Result 65 states and 98 transitions. [2024-09-18 15:57:36,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-18 15:57:36,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-18 15:57:36,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:36,470 INFO L225 Difference]: With dead ends: 65 [2024-09-18 15:57:36,470 INFO L226 Difference]: Without dead ends: 33 [2024-09-18 15:57:36,472 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-18 15:57:36,476 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:36,476 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 46 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:57:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-18 15:57:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2024-09-18 15:57:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-18 15:57:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2024-09-18 15:57:36,514 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 16 [2024-09-18 15:57:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:36,515 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2024-09-18 15:57:36,515 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-18 15:57:36,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2024-09-18 15:57:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-18 15:57:36,516 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:36,516 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:36,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 15:57:36,517 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:36,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:36,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1899526296, now seen corresponding path program 1 times [2024-09-18 15:57:36,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:36,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289583886] [2024-09-18 15:57:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:36,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:36,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:57:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:36,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:57:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:57:36,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:36,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289583886] [2024-09-18 15:57:36,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289583886] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:36,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:36,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:57:36,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909977090] [2024-09-18 15:57:36,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:36,681 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:57:36,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:36,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:57:36,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:57:36,682 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-18 15:57:36,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:36,789 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-09-18 15:57:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 15:57:36,791 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), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-09-18 15:57:36,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:36,792 INFO L225 Difference]: With dead ends: 41 [2024-09-18 15:57:36,792 INFO L226 Difference]: Without dead ends: 34 [2024-09-18 15:57:36,792 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:57:36,793 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:36,793 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 77 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:57:36,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-18 15:57:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-18 15:57:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-18 15:57:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-09-18 15:57:36,806 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 17 [2024-09-18 15:57:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:36,806 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-09-18 15:57:36,807 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), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-18 15:57:36,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:36,807 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-09-18 15:57:36,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-18 15:57:36,808 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:36,809 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:36,809 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-18 15:57:36,809 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:36,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:36,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1901015846, now seen corresponding path program 1 times [2024-09-18 15:57:36,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:36,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483886304] [2024-09-18 15:57:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:36,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:36,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495552862] [2024-09-18 15:57:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:36,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:36,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:36,831 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) [2024-09-18 15:57:36,839 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 15:57:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:36,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 15:57:36,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:57:36,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:57:36,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:36,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483886304] [2024-09-18 15:57:36,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495552862] [2024-09-18 15:57:36,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495552862] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:36,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:36,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:57:36,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957937554] [2024-09-18 15:57:36,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:36,987 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:57:36,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:36,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:57:36,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:57:36,989 INFO L87 Difference]: Start difference. First operand 34 states and 43 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-18 15:57:37,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:37,038 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-09-18 15:57:37,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:57:37,039 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-09-18 15:57:37,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:37,040 INFO L225 Difference]: With dead ends: 44 [2024-09-18 15:57:37,040 INFO L226 Difference]: Without dead ends: 42 [2024-09-18 15:57:37,040 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:57:37,041 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:37,041 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:57:37,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-18 15:57:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2024-09-18 15:57:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-18 15:57:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2024-09-18 15:57:37,049 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 17 [2024-09-18 15:57:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:37,049 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2024-09-18 15:57:37,050 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-18 15:57:37,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2024-09-18 15:57:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-18 15:57:37,050 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:37,051 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:37,063 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-18 15:57:37,251 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:37,251 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:37,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1706287866, now seen corresponding path program 1 times [2024-09-18 15:57:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:37,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622844504] [2024-09-18 15:57:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:37,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:37,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074381597] [2024-09-18 15:57:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:37,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:37,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:37,263 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) [2024-09-18 15:57:37,264 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 15:57:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:37,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 15:57:37,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:57:37,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:57:37,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622844504] [2024-09-18 15:57:37,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:37,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074381597] [2024-09-18 15:57:37,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074381597] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:37,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:37,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:57:37,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559254107] [2024-09-18 15:57:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:37,341 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:57:37,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:37,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:57:37,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:57:37,342 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:57:37,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:37,402 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2024-09-18 15:57:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:57:37,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-18 15:57:37,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:37,403 INFO L225 Difference]: With dead ends: 57 [2024-09-18 15:57:37,403 INFO L226 Difference]: Without dead ends: 54 [2024-09-18 15:57:37,403 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 [2024-09-18 15:57:37,404 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:37,404 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 124 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:57:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-18 15:57:37,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-09-18 15:57:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-18 15:57:37,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-09-18 15:57:37,417 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 22 [2024-09-18 15:57:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:37,417 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-09-18 15:57:37,418 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:57:37,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:37,418 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-09-18 15:57:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-18 15:57:37,419 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:37,419 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:37,433 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 15:57:37,619 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 [2024-09-18 15:57:37,620 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:37,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:37,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1856957465, now seen corresponding path program 1 times [2024-09-18 15:57:37,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:37,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151939552] [2024-09-18 15:57:37,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:37,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:37,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926043366] [2024-09-18 15:57:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:37,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:37,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:37,648 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) [2024-09-18 15:57:37,649 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 15:57:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:37,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-18 15:57:37,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:37,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:57:37,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:57:37,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:37,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151939552] [2024-09-18 15:57:37,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:37,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926043366] [2024-09-18 15:57:37,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926043366] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:37,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:37,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:57:37,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625822196] [2024-09-18 15:57:37,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:37,733 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:57:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:37,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:57:37,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:57:37,734 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-18 15:57:37,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:37,802 INFO L93 Difference]: Finished difference Result 82 states and 112 transitions. [2024-09-18 15:57:37,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:57:37,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-18 15:57:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:37,804 INFO L225 Difference]: With dead ends: 82 [2024-09-18 15:57:37,805 INFO L226 Difference]: Without dead ends: 80 [2024-09-18 15:57:37,806 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:57:37,807 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:37,808 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 141 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:57:37,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-18 15:57:37,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2024-09-18 15:57:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 45 states have internal predecessors, (55), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-18 15:57:37,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2024-09-18 15:57:37,830 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 30 [2024-09-18 15:57:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:37,830 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2024-09-18 15:57:37,830 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-18 15:57:37,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2024-09-18 15:57:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-18 15:57:37,831 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:37,831 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:37,847 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-18 15:57:38,032 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 [2024-09-18 15:57:38,032 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:38,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1900127414, now seen corresponding path program 1 times [2024-09-18 15:57:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:38,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391771212] [2024-09-18 15:57:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:38,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:57:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:57:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-18 15:57:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-18 15:57:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:57:38,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:38,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391771212] [2024-09-18 15:57:38,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391771212] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:38,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:38,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-18 15:57:38,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119292646] [2024-09-18 15:57:38,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:38,179 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-18 15:57:38,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-18 15:57:38,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-18 15:57:38,180 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-18 15:57:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:38,288 INFO L93 Difference]: Finished difference Result 112 states and 152 transitions. [2024-09-18 15:57:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-18 15:57:38,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-09-18 15:57:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:38,291 INFO L225 Difference]: With dead ends: 112 [2024-09-18 15:57:38,292 INFO L226 Difference]: Without dead ends: 77 [2024-09-18 15:57:38,293 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-18 15:57:38,293 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:38,295 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 74 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:57:38,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-18 15:57:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-09-18 15:57:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 48 states have internal predecessors, (57), 23 states have call successors, (23), 8 states have call predecessors, (23), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-18 15:57:38,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2024-09-18 15:57:38,310 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 33 [2024-09-18 15:57:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:38,311 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2024-09-18 15:57:38,311 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-18 15:57:38,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:38,311 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2024-09-18 15:57:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-18 15:57:38,312 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:38,312 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:38,312 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-18 15:57:38,312 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:38,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:38,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2073680743, now seen corresponding path program 1 times [2024-09-18 15:57:38,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:38,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755066944] [2024-09-18 15:57:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:38,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:57:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:57:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-18 15:57:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-18 15:57:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-18 15:57:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-18 15:57:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-18 15:57:38,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:38,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755066944] [2024-09-18 15:57:38,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755066944] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:38,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:38,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-18 15:57:38,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344297103] [2024-09-18 15:57:38,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:38,508 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-18 15:57:38,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:38,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-18 15:57:38,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-09-18 15:57:38,509 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-18 15:57:38,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:38,661 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2024-09-18 15:57:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-18 15:57:38,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2024-09-18 15:57:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:38,662 INFO L225 Difference]: With dead ends: 83 [2024-09-18 15:57:38,663 INFO L226 Difference]: Without dead ends: 81 [2024-09-18 15:57:38,663 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-18 15:57:38,663 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:38,664 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 121 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:57:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-18 15:57:38,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-09-18 15:57:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 51 states have internal predecessors, (60), 23 states have call successors, (23), 9 states have call predecessors, (23), 8 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-18 15:57:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2024-09-18 15:57:38,680 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 40 [2024-09-18 15:57:38,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:38,680 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2024-09-18 15:57:38,684 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-18 15:57:38,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2024-09-18 15:57:38,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-18 15:57:38,685 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:38,685 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:38,685 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-18 15:57:38,686 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:38,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:38,686 INFO L85 PathProgramCache]: Analyzing trace with hash -930915559, now seen corresponding path program 1 times [2024-09-18 15:57:38,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:38,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787237454] [2024-09-18 15:57:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:38,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:57:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:57:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-18 15:57:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-18 15:57:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-18 15:57:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-18 15:57:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-18 15:57:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-18 15:57:38,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:38,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787237454] [2024-09-18 15:57:38,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787237454] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:57:38,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202499016] [2024-09-18 15:57:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:38,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:38,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:38,833 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) [2024-09-18 15:57:38,834 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 15:57:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:38,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 15:57:38,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-18 15:57:38,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:57:38,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202499016] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:38,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-18 15:57:38,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-09-18 15:57:38,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179331946] [2024-09-18 15:57:38,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:38,958 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-18 15:57:38,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-18 15:57:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-09-18 15:57:38,959 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-18 15:57:39,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:39,027 INFO L93 Difference]: Finished difference Result 94 states and 120 transitions. [2024-09-18 15:57:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 15:57:39,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2024-09-18 15:57:39,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:39,028 INFO L225 Difference]: With dead ends: 94 [2024-09-18 15:57:39,029 INFO L226 Difference]: Without dead ends: 92 [2024-09-18 15:57:39,029 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-09-18 15:57:39,030 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:39,031 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 185 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:57:39,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-18 15:57:39,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2024-09-18 15:57:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 56 states have internal predecessors, (63), 25 states have call successors, (25), 10 states have call predecessors, (25), 9 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-18 15:57:39,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2024-09-18 15:57:39,045 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 46 [2024-09-18 15:57:39,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:39,047 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2024-09-18 15:57:39,047 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-18 15:57:39,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2024-09-18 15:57:39,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-18 15:57:39,049 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:39,049 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:39,062 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-18 15:57:39,253 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:39,254 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:39,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:39,254 INFO L85 PathProgramCache]: Analyzing trace with hash -872582608, now seen corresponding path program 1 times [2024-09-18 15:57:39,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:39,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872245125] [2024-09-18 15:57:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:39,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:39,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:57:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:39,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:57:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:39,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-18 15:57:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:39,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-18 15:57:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:39,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-18 15:57:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:39,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-18 15:57:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:39,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-18 15:57:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-18 15:57:39,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:39,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872245125] [2024-09-18 15:57:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872245125] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:57:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331015135] [2024-09-18 15:57:39,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:39,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:39,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:39,371 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) [2024-09-18 15:57:39,373 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 15:57:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:39,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-18 15:57:39,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-18 15:57:39,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:57:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-18 15:57:39,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331015135] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:57:39,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:57:39,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 13 [2024-09-18 15:57:39,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832061584] [2024-09-18 15:57:39,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:57:39,546 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-18 15:57:39,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-18 15:57:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-09-18 15:57:39,547 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 9 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-18 15:57:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:39,801 INFO L93 Difference]: Finished difference Result 254 states and 311 transitions. [2024-09-18 15:57:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-18 15:57:39,803 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 9 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) Word has length 49 [2024-09-18 15:57:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:39,805 INFO L225 Difference]: With dead ends: 254 [2024-09-18 15:57:39,805 INFO L226 Difference]: Without dead ends: 247 [2024-09-18 15:57:39,805 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-09-18 15:57:39,805 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 109 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:39,806 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 148 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:57:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-18 15:57:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 231. [2024-09-18 15:57:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 155 states have internal predecessors, (175), 58 states have call successors, (58), 27 states have call predecessors, (58), 26 states have return successors, (53), 48 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-18 15:57:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 286 transitions. [2024-09-18 15:57:39,845 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 286 transitions. Word has length 49 [2024-09-18 15:57:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:39,845 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 286 transitions. [2024-09-18 15:57:39,845 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 9 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-18 15:57:39,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:39,846 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 286 transitions. [2024-09-18 15:57:39,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-18 15:57:39,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:39,847 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:39,859 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-18 15:57:40,048 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:40,048 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:40,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:40,049 INFO L85 PathProgramCache]: Analyzing trace with hash 260253794, now seen corresponding path program 1 times [2024-09-18 15:57:40,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:40,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661588797] [2024-09-18 15:57:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:40,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:40,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513210807] [2024-09-18 15:57:40,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:40,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:40,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:40,059 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) [2024-09-18 15:57:40,060 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-18 15:57:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-18 15:57:40,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-18 15:57:40,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:57:40,516 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-18 15:57:40,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:40,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661588797] [2024-09-18 15:57:40,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:40,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513210807] [2024-09-18 15:57:40,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513210807] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-18 15:57:40,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-18 15:57:40,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-09-18 15:57:40,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188868601] [2024-09-18 15:57:40,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:40,518 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-18 15:57:40,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:40,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-18 15:57:40,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-09-18 15:57:40,518 INFO L87 Difference]: Start difference. First operand 231 states and 286 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-18 15:57:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:40,627 INFO L93 Difference]: Finished difference Result 249 states and 303 transitions. [2024-09-18 15:57:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:57:40,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 54 [2024-09-18 15:57:40,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:40,629 INFO L225 Difference]: With dead ends: 249 [2024-09-18 15:57:40,629 INFO L226 Difference]: Without dead ends: 243 [2024-09-18 15:57:40,630 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-09-18 15:57:40,630 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:40,630 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 113 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:57:40,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-18 15:57:40,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 178. [2024-09-18 15:57:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 114 states have (on average 1.131578947368421) internal successors, (129), 119 states have internal predecessors, (129), 39 states have call successors, (39), 25 states have call predecessors, (39), 24 states have return successors, (38), 33 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-18 15:57:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 206 transitions. [2024-09-18 15:57:40,663 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 206 transitions. Word has length 54 [2024-09-18 15:57:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:40,663 INFO L474 AbstractCegarLoop]: Abstraction has 178 states and 206 transitions. [2024-09-18 15:57:40,663 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-18 15:57:40,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 206 transitions. [2024-09-18 15:57:40,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-18 15:57:40,664 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:40,664 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:40,677 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-18 15:57:40,868 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-18 15:57:40,869 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:40,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:40,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1070557628, now seen corresponding path program 1 times [2024-09-18 15:57:40,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:40,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702076734] [2024-09-18 15:57:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:40,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:57:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:57:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-18 15:57:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-18 15:57:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-18 15:57:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-18 15:57:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-18 15:57:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-18 15:57:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-18 15:57:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-18 15:57:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-18 15:57:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-09-18 15:57:40,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:40,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702076734] [2024-09-18 15:57:40,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702076734] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:57:40,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323595780] [2024-09-18 15:57:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:40,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:40,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:40,989 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) [2024-09-18 15:57:40,999 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-18 15:57:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:41,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-18 15:57:41,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-09-18 15:57:41,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:57:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-09-18 15:57:41,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323595780] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:57:41,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:57:41,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-09-18 15:57:41,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035227667] [2024-09-18 15:57:41,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:57:41,151 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-18 15:57:41,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:41,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-18 15:57:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-09-18 15:57:41,153 INFO L87 Difference]: Start difference. First operand 178 states and 206 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-09-18 15:57:41,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:41,311 INFO L93 Difference]: Finished difference Result 190 states and 215 transitions. [2024-09-18 15:57:41,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-18 15:57:41,311 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 70 [2024-09-18 15:57:41,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:41,312 INFO L225 Difference]: With dead ends: 190 [2024-09-18 15:57:41,312 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 15:57:41,313 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-09-18 15:57:41,313 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:41,314 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 116 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:57:41,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 15:57:41,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 15:57:41,314 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) [2024-09-18 15:57:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 15:57:41,314 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2024-09-18 15:57:41,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:41,315 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 15:57:41,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-09-18 15:57:41,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:41,315 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 15:57:41,315 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 15:57:41,317 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 15:57:41,330 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-18 15:57:41,518 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:41,520 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:41,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 15:57:42,984 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 15:57:42,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 03:57:42 BoogieIcfgContainer [2024-09-18 15:57:42,998 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 15:57:42,999 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 15:57:42,999 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 15:57:42,999 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 15:57:42,999 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:57:36" (3/4) ... [2024-09-18 15:57:43,001 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 15:57:43,048 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 15:57:43,049 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 15:57:43,049 INFO L158 Benchmark]: Toolchain (without parser) took 7423.76ms. Allocated memory was 130.0MB in the beginning and 222.3MB in the end (delta: 92.3MB). Free memory was 58.4MB in the beginning and 105.7MB in the end (delta: -47.4MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2024-09-18 15:57:43,049 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:57:43,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.02ms. Allocated memory was 130.0MB in the beginning and 184.5MB in the end (delta: 54.5MB). Free memory was 58.0MB in the beginning and 150.3MB in the end (delta: -92.3MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2024-09-18 15:57:43,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 13.48ms. Allocated memory is still 184.5MB. Free memory was 150.3MB in the beginning and 149.5MB in the end (delta: 818.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:57:43,050 INFO L158 Benchmark]: Boogie Preprocessor took 23.73ms. Allocated memory is still 184.5MB. Free memory was 149.5MB in the beginning and 147.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:57:43,050 INFO L158 Benchmark]: RCFGBuilder took 272.40ms. Allocated memory is still 184.5MB. Free memory was 147.5MB in the beginning and 133.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-18 15:57:43,051 INFO L158 Benchmark]: TraceAbstraction took 6866.30ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 133.6MB in the beginning and 107.8MB in the end (delta: 25.8MB). Peak memory consumption was 110.9MB. Max. memory is 16.1GB. [2024-09-18 15:57:43,051 INFO L158 Benchmark]: Witness Printer took 49.87ms. Allocated memory is still 222.3MB. Free memory was 107.8MB in the beginning and 105.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:57:43,052 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.02ms. Allocated memory was 130.0MB in the beginning and 184.5MB in the end (delta: 54.5MB). Free memory was 58.0MB in the beginning and 150.3MB in the end (delta: -92.3MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 13.48ms. Allocated memory is still 184.5MB. Free memory was 150.3MB in the beginning and 149.5MB in the end (delta: 818.7kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.73ms. Allocated memory is still 184.5MB. Free memory was 149.5MB in the beginning and 147.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 272.40ms. Allocated memory is still 184.5MB. Free memory was 147.5MB in the beginning and 133.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6866.30ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 133.6MB in the beginning and 107.8MB in the end (delta: 25.8MB). Peak memory consumption was 110.9MB. Max. memory is 16.1GB. * Witness Printer took 49.87ms. Allocated memory is still 222.3MB. Free memory was 107.8MB in the beginning and 105.7MB 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.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: 17]: 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, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.3s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 312 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 278 mSDsluCounter, 1280 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 949 mSDsCounter, 150 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 968 IncrementalHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 150 mSolverCounterUnsat, 331 mSDtfsCounter, 968 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 615 GetRequests, 510 SyntacticMatches, 3 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=9, InterpolantAutomatonStates: 84, 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, 11 MinimizatonAttempts, 98 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 682 NumberOfCodeBlocks, 682 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 715 ConstructedInterpolants, 0 QuantifiedInterpolants, 1741 SizeOfPredicates, 14 NumberOfNonLiveVariables, 817 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 905/967 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: 46]: Loop Invariant Derived loop invariant: (((((1 <= r) && (((((__int128) q * y) + r) + ((__int128) a * y)) == ((__int128) b + x))) && (\old(counter) == 0)) && (1 <= y)) && (b == ((__int128) a * y))) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((__int128) q * y) + r) + ((__int128) a * y)) == ((__int128) b + x)) && (\old(counter) == 0)) && (1 <= y)) && (b == ((__int128) a * y))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: (counter == 0) Ensures: ((\old(cond) != 0) && (counter == 0)) - ProcedureContractResult [Line: 23]: Procedure Contract for main Derived contract for procedure main. Requires: (counter == 0) Ensures: (\old(counter) == 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-18 15:57:43,069 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