./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.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 e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/egcd-ll_valuebound50.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 3134c54bcf8aadaf562f6870f2277db1ec6f958b1ed6dba99e7410745dba79ba --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 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 14:46:00,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 14:46:00,891 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 14:46:00,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 14:46:00,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 14:46:00,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 14:46:00,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 14:46:00,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 14:46:00,918 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 14:46:00,918 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 14:46:00,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 14:46:00,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 14:46:00,920 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 14:46:00,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 14:46:00,920 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 14:46:00,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 14:46:00,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 14:46:00,922 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 14:46:00,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 14:46:00,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 14:46:00,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 14:46:00,923 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 14:46:00,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 14:46:00,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 14:46:00,924 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 14:46:00,925 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 14:46:00,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 14:46:00,925 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 14:46:00,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 14:46:00,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 14:46:00,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 14:46:00,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 14:46:00,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:46:00,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 14:46:00,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 14:46:00,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 14:46:00,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 14:46:00,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 14:46:00,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 14:46:00,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 14:46:00,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 14:46:00,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 14:46:00,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3134c54bcf8aadaf562f6870f2277db1ec6f958b1ed6dba99e7410745dba79ba Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 14:46:01,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 14:46:01,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 14:46:01,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 14:46:01,201 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 14:46:01,201 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 14:46:01,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2024-10-15 14:46:02,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 14:46:02,807 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 14:46:02,807 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2024-10-15 14:46:02,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e4b5fe41c/3ef2f2a9b07a48f9a1700a2e1fc15eae/FLAG08d4613bb [2024-10-15 14:46:03,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e4b5fe41c/3ef2f2a9b07a48f9a1700a2e1fc15eae [2024-10-15 14:46:03,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 14:46:03,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 14:46:03,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 14:46:03,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 14:46:03,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 14:46:03,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607234f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03, skipping insertion in model container [2024-10-15 14:46:03,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,241 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 14:46:03,436 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/egcd-ll_valuebound50.c[489,502] [2024-10-15 14:46:03,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:46:03,461 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 14:46:03,472 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/egcd-ll_valuebound50.c[489,502] [2024-10-15 14:46:03,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:46:03,519 INFO L204 MainTranslator]: Completed translation [2024-10-15 14:46:03,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03 WrapperNode [2024-10-15 14:46:03,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 14:46:03,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 14:46:03,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 14:46:03,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 14:46:03,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,560 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 14:46:03,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 14:46:03,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 14:46:03,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 14:46:03,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 14:46:03,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,584 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-15 14:46:03,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,585 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,591 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 14:46:03,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 14:46:03,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 14:46:03,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 14:46:03,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (1/1) ... [2024-10-15 14:46:03,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:46:03,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:46:03,624 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) [2024-10-15 14:46:03,629 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 [2024-10-15 14:46:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 14:46:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-15 14:46:03,667 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-15 14:46:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 14:46:03,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 14:46:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 14:46:03,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 14:46:03,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 14:46:03,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 14:46:03,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 14:46:03,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 14:46:03,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 14:46:03,722 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 14:46:03,723 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 14:46:03,869 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-10-15 14:46:03,869 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 14:46:03,886 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 14:46:03,886 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 14:46:03,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:46:03 BoogieIcfgContainer [2024-10-15 14:46:03,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 14:46:03,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 14:46:03,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 14:46:03,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 14:46:03,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:46:03" (1/3) ... [2024-10-15 14:46:03,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d2612a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:46:03, skipping insertion in model container [2024-10-15 14:46:03,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:46:03" (2/3) ... [2024-10-15 14:46:03,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d2612a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:46:03, skipping insertion in model container [2024-10-15 14:46:03,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:46:03" (3/3) ... [2024-10-15 14:46:03,895 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound50.c [2024-10-15 14:46:03,911 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 14:46:03,912 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 14:46:03,972 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 14:46:03,983 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@4142f4fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 14:46:03,984 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 14:46:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-15 14:46:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-15 14:46:03,997 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:46:03,999 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:46:03,999 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:46:04,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:04,006 INFO L85 PathProgramCache]: Analyzing trace with hash 963610160, now seen corresponding path program 1 times [2024-10-15 14:46:04,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:46:04,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085208441] [2024-10-15 14:46:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:04,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:46:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:04,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:46:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:04,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:46:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:04,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 14:46:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:04,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:46:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:04,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:46:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:46:04,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:46:04,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085208441] [2024-10-15 14:46:04,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085208441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:46:04,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:46:04,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 14:46:04,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996576065] [2024-10-15 14:46:04,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:46:04,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-15 14:46:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:46:04,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-15 14:46:04,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 14:46:04,222 INFO L87 Difference]: Start difference. First operand has 35 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 14:46:04,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:46:04,258 INFO L93 Difference]: Finished difference Result 64 states and 102 transitions. [2024-10-15 14:46:04,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-15 14:46:04,269 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-10-15 14:46:04,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:46:04,282 INFO L225 Difference]: With dead ends: 64 [2024-10-15 14:46:04,282 INFO L226 Difference]: Without dead ends: 31 [2024-10-15 14:46:04,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 14:46:04,294 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:46:04,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:46:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-15 14:46:04,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-15 14:46:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-15 14:46:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2024-10-15 14:46:04,325 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 32 [2024-10-15 14:46:04,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:46:04,325 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2024-10-15 14:46:04,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 14:46:04,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2024-10-15 14:46:04,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-15 14:46:04,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:46:04,328 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:46:04,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 14:46:04,328 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:46:04,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:04,329 INFO L85 PathProgramCache]: Analyzing trace with hash -914175556, now seen corresponding path program 1 times [2024-10-15 14:46:04,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:46:04,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476303054] [2024-10-15 14:46:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:04,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:46:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:46:04,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109466138] [2024-10-15 14:46:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:04,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:04,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:46:04,367 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) [2024-10-15 14:46:04,369 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 14:46:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:04,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 14:46:04,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:46:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:46:04,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:46:04,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:46:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476303054] [2024-10-15 14:46:04,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:46:04,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109466138] [2024-10-15 14:46:04,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109466138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:46:04,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:46:04,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:46:04,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429984000] [2024-10-15 14:46:04,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:46:04,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:46:04,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:46:04,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:46:04,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:46:04,571 INFO L87 Difference]: Start difference. First operand 31 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), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-15 14:46:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:46:04,657 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2024-10-15 14:46:04,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:46:04,658 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 32 [2024-10-15 14:46:04,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:46:04,659 INFO L225 Difference]: With dead ends: 47 [2024-10-15 14:46:04,659 INFO L226 Difference]: Without dead ends: 45 [2024-10-15 14:46:04,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:46:04,661 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:46:04,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 129 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:46:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-15 14:46:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2024-10-15 14:46:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-15 14:46:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-15 14:46:04,678 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 32 [2024-10-15 14:46:04,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:46:04,678 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-15 14:46:04,679 INFO L472 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-15 14:46:04,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:04,679 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-15 14:46:04,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-15 14:46:04,680 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:46:04,680 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:46:04,695 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 14:46:04,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:04,881 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:46:04,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:04,882 INFO L85 PathProgramCache]: Analyzing trace with hash 737940505, now seen corresponding path program 1 times [2024-10-15 14:46:04,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:46:04,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425897199] [2024-10-15 14:46:04,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:04,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:46:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:46:04,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965666536] [2024-10-15 14:46:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:04,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:46:04,932 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) [2024-10-15 14:46:04,933 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 14:46:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:04,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 14:46:05,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:46:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:46:05,090 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:46:05,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:46:05,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425897199] [2024-10-15 14:46:05,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:46:05,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965666536] [2024-10-15 14:46:05,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965666536] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:46:05,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:46:05,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:46:05,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041556995] [2024-10-15 14:46:05,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:46:05,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:46:05,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:46:05,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:46:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:46:05,095 INFO L87 Difference]: Start difference. First operand 44 states and 61 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-15 14:46:05,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:46:05,163 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2024-10-15 14:46:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:46:05,164 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2024-10-15 14:46:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:46:05,166 INFO L225 Difference]: With dead ends: 51 [2024-10-15 14:46:05,166 INFO L226 Difference]: Without dead ends: 49 [2024-10-15 14:46:05,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:46:05,167 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:46:05,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 131 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:46:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-15 14:46:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-10-15 14:46:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-15 14:46:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-15 14:46:05,185 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 37 [2024-10-15 14:46:05,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:46:05,188 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-15 14:46:05,188 INFO L472 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-15 14:46:05,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:05,188 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-15 14:46:05,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-15 14:46:05,189 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:46:05,190 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-15 14:46:05,205 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 14:46:05,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:05,390 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:46:05,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1385223068, now seen corresponding path program 1 times [2024-10-15 14:46:05,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:46:05,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013342450] [2024-10-15 14:46:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:05,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:46:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:46:05,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519678864] [2024-10-15 14:46:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:05,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:05,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:46:05,432 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) [2024-10-15 14:46:05,434 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 14:46:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:05,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 14:46:05,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:46:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-15 14:46:05,572 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:46:05,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:46:05,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013342450] [2024-10-15 14:46:05,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:46:05,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519678864] [2024-10-15 14:46:05,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519678864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:46:05,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:46:05,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:46:05,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654640965] [2024-10-15 14:46:05,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:46:05,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:46:05,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:46:05,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:46:05,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:46:05,576 INFO L87 Difference]: Start difference. First operand 48 states and 64 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, (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) [2024-10-15 14:46:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:46:05,661 INFO L93 Difference]: Finished difference Result 73 states and 104 transitions. [2024-10-15 14:46:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:46:05,663 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, (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 42 [2024-10-15 14:46:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:46:05,667 INFO L225 Difference]: With dead ends: 73 [2024-10-15 14:46:05,667 INFO L226 Difference]: Without dead ends: 69 [2024-10-15 14:46:05,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:46:05,669 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:46:05,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 130 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:46:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-15 14:46:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-15 14:46:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 30 states have call successors, (30), 7 states have call predecessors, (30), 6 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-15 14:46:05,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2024-10-15 14:46:05,695 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 42 [2024-10-15 14:46:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:46:05,696 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2024-10-15 14:46:05,696 INFO L472 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, (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) [2024-10-15 14:46:05,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2024-10-15 14:46:05,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-15 14:46:05,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:46:05,700 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:46:05,717 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 14:46:05,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:05,901 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:46:05,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1071635405, now seen corresponding path program 1 times [2024-10-15 14:46:05,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:46:05,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500068894] [2024-10-15 14:46:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:05,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:46:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:46:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:46:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 14:46:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:46:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:46:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:46:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:46:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:46:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-15 14:46:06,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:46:06,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500068894] [2024-10-15 14:46:06,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500068894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:46:06,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:46:06,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:46:06,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442870590] [2024-10-15 14:46:06,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:46:06,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:46:06,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:46:06,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:46:06,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:46:06,141 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-10-15 14:46:06,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:46:06,187 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2024-10-15 14:46:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:46:06,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 48 [2024-10-15 14:46:06,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:46:06,189 INFO L225 Difference]: With dead ends: 75 [2024-10-15 14:46:06,189 INFO L226 Difference]: Without dead ends: 73 [2024-10-15 14:46:06,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:46:06,190 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:46:06,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 140 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:46:06,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-15 14:46:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-15 14:46:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 39 states have internal predecessors, (44), 30 states have call successors, (30), 8 states have call predecessors, (30), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-15 14:46:06,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2024-10-15 14:46:06,204 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 48 [2024-10-15 14:46:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:46:06,205 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2024-10-15 14:46:06,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-10-15 14:46:06,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:06,205 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2024-10-15 14:46:06,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-15 14:46:06,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:46:06,207 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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, 1] [2024-10-15 14:46:06,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 14:46:06,207 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:46:06,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1501538128, now seen corresponding path program 1 times [2024-10-15 14:46:06,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:46:06,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733758316] [2024-10-15 14:46:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:06,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:46:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:46:06,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518687101] [2024-10-15 14:46:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:06,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:06,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:46:06,246 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) [2024-10-15 14:46:06,247 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 14:46:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-15 14:46:06,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:46:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-15 14:46:06,377 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:46:06,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:46:06,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733758316] [2024-10-15 14:46:06,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:46:06,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518687101] [2024-10-15 14:46:06,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518687101] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:46:06,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:46:06,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:46:06,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455778737] [2024-10-15 14:46:06,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:46:06,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:46:06,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:46:06,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:46:06,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:46:06,379 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:46:06,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:46:06,425 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-10-15 14:46:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:46:06,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2024-10-15 14:46:06,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:46:06,427 INFO L225 Difference]: With dead ends: 83 [2024-10-15 14:46:06,427 INFO L226 Difference]: Without dead ends: 80 [2024-10-15 14:46:06,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:46:06,428 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:46:06,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:46:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-15 14:46:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-10-15 14:46:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:46:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-10-15 14:46:06,441 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 50 [2024-10-15 14:46:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:46:06,441 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-10-15 14:46:06,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:46:06,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-10-15 14:46:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-15 14:46:06,443 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:46:06,443 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 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, 1] [2024-10-15 14:46:06,460 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 14:46:06,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:06,644 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:46:06,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 789508930, now seen corresponding path program 1 times [2024-10-15 14:46:06,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:46:06,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862375840] [2024-10-15 14:46:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:06,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:46:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:46:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:46:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 14:46:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:46:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:46:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:46:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:46:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:46:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:46:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-15 14:46:06,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:46:06,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862375840] [2024-10-15 14:46:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862375840] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:46:06,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090341535] [2024-10-15 14:46:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:06,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:06,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:46:06,976 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) [2024-10-15 14:46:06,978 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 14:46:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:07,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-15 14:46:07,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:46:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-15 14:46:07,162 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:46:07,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090341535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:46:07,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 14:46:07,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-10-15 14:46:07,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508812233] [2024-10-15 14:46:07,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:46:07,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 14:46:07,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:46:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 14:46:07,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-15 14:46:07,165 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-15 14:46:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:46:07,262 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2024-10-15 14:46:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 14:46:07,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 53 [2024-10-15 14:46:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:46:07,264 INFO L225 Difference]: With dead ends: 91 [2024-10-15 14:46:07,264 INFO L226 Difference]: Without dead ends: 87 [2024-10-15 14:46:07,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-10-15 14:46:07,266 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:46:07,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 157 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:46:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-15 14:46:07,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-10-15 14:46:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 50 states have internal predecessors, (55), 27 states have call successors, (27), 12 states have call predecessors, (27), 11 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:46:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2024-10-15 14:46:07,286 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 53 [2024-10-15 14:46:07,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:46:07,286 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2024-10-15 14:46:07,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-15 14:46:07,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2024-10-15 14:46:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-15 14:46:07,290 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:46:07,290 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2024-10-15 14:46:07,308 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 14:46:07,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-15 14:46:07,491 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:46:07,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:07,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1427018501, now seen corresponding path program 2 times [2024-10-15 14:46:07,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:46:07,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976263510] [2024-10-15 14:46:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:07,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:46:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:46:07,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301277193] [2024-10-15 14:46:07,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:46:07,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:07,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:46:07,513 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) [2024-10-15 14:46:07,515 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 14:46:07,567 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:46:07,568 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:46:07,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-15 14:46:07,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:46:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-15 14:46:07,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:46:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-15 14:46:08,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:46:08,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976263510] [2024-10-15 14:46:08,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:46:08,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301277193] [2024-10-15 14:46:08,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301277193] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:46:08,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:46:08,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2024-10-15 14:46:08,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010505579] [2024-10-15 14:46:08,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:46:08,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-15 14:46:08,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:46:08,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-15 14:46:08,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-10-15 14:46:08,398 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-10-15 14:46:12,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.83s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-10-15 14:46:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:46:12,850 INFO L93 Difference]: Finished difference Result 128 states and 166 transitions. [2024-10-15 14:46:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 14:46:12,850 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 55 [2024-10-15 14:46:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:46:12,852 INFO L225 Difference]: With dead ends: 128 [2024-10-15 14:46:12,852 INFO L226 Difference]: Without dead ends: 126 [2024-10-15 14:46:12,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2024-10-15 14:46:12,853 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 30 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:46:12,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 252 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-10-15 14:46:12,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-10-15 14:46:12,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 94. [2024-10-15 14:46:12,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 53 states have (on average 1.150943396226415) internal successors, (61), 56 states have internal predecessors, (61), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:46:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2024-10-15 14:46:12,886 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 55 [2024-10-15 14:46:12,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:46:12,886 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2024-10-15 14:46:12,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-10-15 14:46:12,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:12,887 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2024-10-15 14:46:12,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-15 14:46:12,888 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:46:12,888 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 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] [2024-10-15 14:46:12,904 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 14:46:13,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:13,093 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:46:13,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:13,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1563984878, now seen corresponding path program 1 times [2024-10-15 14:46:13,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:46:13,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710944481] [2024-10-15 14:46:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:46:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:46:13,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497597367] [2024-10-15 14:46:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:13,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:13,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:46:13,115 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) [2024-10-15 14:46:13,116 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 14:46:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:13,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-15 14:46:13,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:46:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:46:13,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:46:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-15 14:46:13,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:46:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710944481] [2024-10-15 14:46:13,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:46:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497597367] [2024-10-15 14:46:13,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497597367] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:46:13,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:46:13,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 19 [2024-10-15 14:46:13,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886590875] [2024-10-15 14:46:13,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:46:13,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 14:46:13,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:46:13,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 14:46:13,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-10-15 14:46:13,933 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2024-10-15 14:46:18,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-10-15 14:46:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:46:18,937 INFO L93 Difference]: Finished difference Result 135 states and 175 transitions. [2024-10-15 14:46:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 14:46:18,937 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 60 [2024-10-15 14:46:18,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:46:18,939 INFO L225 Difference]: With dead ends: 135 [2024-10-15 14:46:18,939 INFO L226 Difference]: Without dead ends: 117 [2024-10-15 14:46:18,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2024-10-15 14:46:18,941 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-10-15 14:46:18,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 243 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 313 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-10-15 14:46:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-10-15 14:46:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 90. [2024-10-15 14:46:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 55 states have internal predecessors, (60), 23 states have call successors, (23), 14 states have call predecessors, (23), 13 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-15 14:46:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2024-10-15 14:46:18,982 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 60 [2024-10-15 14:46:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:46:18,982 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2024-10-15 14:46:18,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2024-10-15 14:46:18,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2024-10-15 14:46:18,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-15 14:46:18,983 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:46:18,984 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:46:19,006 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-15 14:46:19,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:19,192 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:46:19,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:19,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1657370914, now seen corresponding path program 1 times [2024-10-15 14:46:19,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:46:19,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830203282] [2024-10-15 14:46:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:19,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:46:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:46:19,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794067603] [2024-10-15 14:46:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:19,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:19,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:46:19,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:46:19,230 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 14:46:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:19,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-15 14:46:19,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:46:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:46:19,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:46:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-10-15 14:46:19,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:46:19,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830203282] [2024-10-15 14:46:19,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:46:19,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794067603] [2024-10-15 14:46:19,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794067603] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-15 14:46:19,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 14:46:19,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-10-15 14:46:19,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521985971] [2024-10-15 14:46:19,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:46:19,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:46:19,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:46:19,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:46:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-15 14:46:19,544 INFO L87 Difference]: Start difference. First operand 90 states and 103 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:46:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:46:19,664 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2024-10-15 14:46:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:46:19,665 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-10-15 14:46:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:46:19,668 INFO L225 Difference]: With dead ends: 96 [2024-10-15 14:46:19,668 INFO L226 Difference]: Without dead ends: 91 [2024-10-15 14:46:19,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-15 14:46:19,669 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:46:19,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:46:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-15 14:46:19,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-10-15 14:46:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 20 states have call successors, (20), 15 states have call predecessors, (20), 13 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-15 14:46:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2024-10-15 14:46:19,700 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 68 [2024-10-15 14:46:19,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:46:19,701 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2024-10-15 14:46:19,701 INFO L472 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:46:19,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:19,702 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2024-10-15 14:46:19,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-15 14:46:19,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:46:19,703 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 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, 1] [2024-10-15 14:46:19,720 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 14:46:19,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:19,908 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:46:19,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:19,908 INFO L85 PathProgramCache]: Analyzing trace with hash -335668690, now seen corresponding path program 1 times [2024-10-15 14:46:19,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:46:19,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929577112] [2024-10-15 14:46:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:19,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:46:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:46:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:46:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 14:46:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:46:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:46:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:46:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:46:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:46:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:46:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:46:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:46:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:46:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-10-15 14:46:20,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:46:20,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929577112] [2024-10-15 14:46:20,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929577112] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:46:20,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127000000] [2024-10-15 14:46:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:46:20,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:46:20,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:46:20,220 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:46:20,222 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 14:46:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:46:20,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 14:46:20,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:46:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-10-15 14:46:20,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:46:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-10-15 14:46:20,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127000000] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:46:20,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:46:20,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-10-15 14:46:20,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816404402] [2024-10-15 14:46:20,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:46:20,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 14:46:20,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:46:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 14:46:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-15 14:46:20,420 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-15 14:46:20,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:46:20,620 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2024-10-15 14:46:20,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 14:46:20,621 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 71 [2024-10-15 14:46:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:46:20,622 INFO L225 Difference]: With dead ends: 96 [2024-10-15 14:46:20,622 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 14:46:20,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-15 14:46:20,623 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:46:20,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 177 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:46:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 14:46:20,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 14:46:20,624 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) [2024-10-15 14:46:20,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 14:46:20,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2024-10-15 14:46:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:46:20,625 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 14:46:20,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-15 14:46:20,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:46:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 14:46:20,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 14:46:20,628 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 14:46:20,646 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-15 14:46:20,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-15 14:46:20,834 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:46:20,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 14:46:32,539 WARN L286 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 85 DAG size of output: 36 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:46:51,737 WARN L286 SmtUtils]: Spent 11.32s on a formula simplification. DAG size of input: 76 DAG size of output: 36 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:46:55,984 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 14:46:56,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:46:56 BoogieIcfgContainer [2024-10-15 14:46:56,002 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 14:46:56,003 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 14:46:56,003 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 14:46:56,003 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 14:46:56,004 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:46:03" (3/4) ... [2024-10-15 14:46:56,005 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 14:46:56,055 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 14:46:56,055 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 14:46:56,055 INFO L158 Benchmark]: Toolchain (without parser) took 52842.90ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 109.8MB in the beginning and 201.8MB in the end (delta: -92.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:46:56,056 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 178.3MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:46:56,056 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.28ms. Allocated memory is still 178.3MB. Free memory was 109.6MB in the beginning and 150.9MB in the end (delta: -41.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2024-10-15 14:46:56,056 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.75ms. Allocated memory is still 178.3MB. Free memory was 150.9MB in the beginning and 150.1MB in the end (delta: 764.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 14:46:56,056 INFO L158 Benchmark]: Boogie Preprocessor took 32.51ms. Allocated memory is still 178.3MB. Free memory was 150.1MB in the beginning and 148.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:46:56,057 INFO L158 Benchmark]: RCFGBuilder took 292.83ms. Allocated memory is still 178.3MB. Free memory was 148.1MB in the beginning and 133.6MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-15 14:46:56,057 INFO L158 Benchmark]: TraceAbstraction took 52112.90ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 133.6MB in the beginning and 203.9MB in the end (delta: -70.3MB). Peak memory consumption was 123.9MB. Max. memory is 16.1GB. [2024-10-15 14:46:56,058 INFO L158 Benchmark]: Witness Printer took 52.23ms. Allocated memory is still 237.0MB. Free memory was 203.9MB in the beginning and 201.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 14:46:56,059 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 178.3MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.28ms. Allocated memory is still 178.3MB. Free memory was 109.6MB in the beginning and 150.9MB in the end (delta: -41.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.75ms. Allocated memory is still 178.3MB. Free memory was 150.9MB in the beginning and 150.1MB in the end (delta: 764.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.51ms. Allocated memory is still 178.3MB. Free memory was 150.1MB in the beginning and 148.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 292.83ms. Allocated memory is still 178.3MB. Free memory was 148.1MB in the beginning and 133.6MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 52112.90ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 133.6MB in the beginning and 203.9MB in the end (delta: -70.3MB). Peak memory consumption was 123.9MB. Max. memory is 16.1GB. * Witness Printer took 52.23ms. Allocated memory is still 237.0MB. Free memory was 203.9MB in the beginning and 201.8MB 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: 13]: 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, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.9s, OverallIterations: 11, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 125 SdHoareTripleChecker+Valid, 9.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 1651 SdHoareTripleChecker+Invalid, 9.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1280 mSDsCounter, 130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 987 IncrementalHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 130 mSolverCounterUnsat, 371 mSDtfsCounter, 987 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 830 GetRequests, 734 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=8, InterpolantAutomatonStates: 79, 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, 66 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1016 NumberOfCodeBlocks, 1016 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 909 ConstructedInterpolants, 0 QuantifiedInterpolants, 2752 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1156 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 1091/1171 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((b == (((__int128) q * x) + ((__int128) y * s))) && (1 <= x)) && (a == (((__int128) y * r) + ((__int128) p * x)))) && (1 <= y)) && (((__int128) p * s) == (((__int128) q * r) + 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-10-15 14:46:56,084 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE