./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/cohendiv-ll.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/cohendiv-ll.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 601ddeb38cc85433f6271611bfd2617c2fcbf2b89119dbe2c319aedc14aa3b17 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 15:51:55,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 15:51:55,794 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 15:51:55,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 15:51:55,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 15:51:55,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 15:51:55,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 15:51:55,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 15:51:55,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 15:51:55,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 15:51:55,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 15:51:55,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 15:51:55,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 15:51:55,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 15:51:55,834 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 15:51:55,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 15:51:55,835 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 15:51:55,835 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 15:51:55,835 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 15:51:55,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 15:51:55,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 15:51:55,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 15:51:55,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 15:51:55,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 15:51:55,838 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 15:51:55,838 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 15:51:55,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 15:51:55,839 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 15:51:55,839 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 15:51:55,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 15:51:55,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 15:51:55,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 15:51:55,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:51:55,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 15:51:55,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 15:51:55,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 15:51:55,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 15:51:55,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 15:51:55,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 15:51:55,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 15:51:55,843 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 15:51:55,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 15:51:55,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 601ddeb38cc85433f6271611bfd2617c2fcbf2b89119dbe2c319aedc14aa3b17 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 15:51:56,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 15:51:56,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 15:51:56,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 15:51:56,125 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 15:51:56,125 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 15:51:56,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/cohendiv-ll.c [2024-09-18 15:51:57,539 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 15:51:57,729 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 15:51:57,729 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/cohendiv-ll.c [2024-09-18 15:51:57,737 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f58c551a1/ab098412b7774bc28bb06fb57bdde473/FLAGfd5ca8189 [2024-09-18 15:51:57,756 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f58c551a1/ab098412b7774bc28bb06fb57bdde473 [2024-09-18 15:51:57,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 15:51:57,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 15:51:57,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 15:51:57,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 15:51:57,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 15:51:57,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:51:57" (1/1) ... [2024-09-18 15:51:57,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9d3a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:57, skipping insertion in model container [2024-09-18 15:51:57,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:51:57" (1/1) ... [2024-09-18 15:51:57,802 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 15:51:57,944 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/cohendiv-ll.c[576,589] [2024-09-18 15:51:57,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:51:57,971 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 15:51:57,982 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/cohendiv-ll.c[576,589] [2024-09-18 15:51:57,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:51:58,004 INFO L204 MainTranslator]: Completed translation [2024-09-18 15:51:58,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58 WrapperNode [2024-09-18 15:51:58,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 15:51:58,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 15:51:58,008 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 15:51:58,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 15:51:58,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,030 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 15:51:58,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 15:51:58,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 15:51:58,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 15:51:58,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 15:51:58,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,047 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,058 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-18 15:51:58,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 15:51:58,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 15:51:58,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 15:51:58,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 15:51:58,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (1/1) ... [2024-09-18 15:51:58,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:51:58,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:58,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-18 15:51:58,106 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-18 15:51:58,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 15:51:58,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-18 15:51:58,143 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-18 15:51:58,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 15:51:58,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 15:51:58,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 15:51:58,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 15:51:58,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 15:51:58,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 15:51:58,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 15:51:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 15:51:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 15:51:58,196 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 15:51:58,197 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 15:51:58,359 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-18 15:51:58,360 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 15:51:58,390 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 15:51:58,390 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-18 15:51:58,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:51:58 BoogieIcfgContainer [2024-09-18 15:51:58,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 15:51:58,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 15:51:58,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 15:51:58,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 15:51:58,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 03:51:57" (1/3) ... [2024-09-18 15:51:58,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22448f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:51:58, skipping insertion in model container [2024-09-18 15:51:58,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:58" (2/3) ... [2024-09-18 15:51:58,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22448f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:51:58, skipping insertion in model container [2024-09-18 15:51:58,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:51:58" (3/3) ... [2024-09-18 15:51:58,401 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll.c [2024-09-18 15:51:58,417 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 15:51:58,417 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 15:51:58,483 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 15:51:58,492 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5bfd08c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 15:51:58,492 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 15:51:58,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-18 15:51:58,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-18 15:51:58,505 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:58,506 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:58,506 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:58,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:58,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1223455301, now seen corresponding path program 1 times [2024-09-18 15:51:58,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:58,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458298198] [2024-09-18 15:51:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:58,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:58,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:51:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:58,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:51:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:51:58,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:58,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458298198] [2024-09-18 15:51:58,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458298198] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:58,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:58,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-18 15:51:58,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701003584] [2024-09-18 15:51:58,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:58,733 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-18 15:51:58,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-18 15:51:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 15:51:58,758 INFO L87 Difference]: Start difference. First operand has 34 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-18 15:51:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:58,783 INFO L93 Difference]: Finished difference Result 60 states and 92 transitions. [2024-09-18 15:51:58,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-18 15:51:58,787 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-18 15:51:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:58,794 INFO L225 Difference]: With dead ends: 60 [2024-09-18 15:51:58,794 INFO L226 Difference]: Without dead ends: 30 [2024-09-18 15:51:58,797 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 15:51:58,800 INFO L434 NwaCegarLoop]: 39 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, 39 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:58,801 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:51:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-18 15:51:58,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-18 15:51:58,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-18 15:51:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-18 15:51:58,838 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2024-09-18 15:51:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:58,838 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-18 15:51:58,838 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-18 15:51:58,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:58,839 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-18 15:51:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-18 15:51:58,840 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:58,840 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:58,841 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 15:51:58,841 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:58,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:58,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1905003221, now seen corresponding path program 1 times [2024-09-18 15:51:58,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:58,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423274183] [2024-09-18 15:51:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:58,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:58,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902148268] [2024-09-18 15:51:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:58,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:58,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:58,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:51:58,876 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 15:51:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:58,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 15:51:58,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:51:59,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:51:59,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:59,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423274183] [2024-09-18 15:51:59,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:59,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902148268] [2024-09-18 15:51:59,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902148268] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:59,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:59,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:51:59,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182643075] [2024-09-18 15:51:59,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:59,045 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:51:59,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:59,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:51:59,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:51:59,047 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-18 15:51:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:59,125 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-09-18 15:51:59,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:51:59,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-18 15:51:59,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:59,127 INFO L225 Difference]: With dead ends: 41 [2024-09-18 15:51:59,128 INFO L226 Difference]: Without dead ends: 39 [2024-09-18 15:51:59,129 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:51:59,131 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:59,131 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 119 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:51:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-18 15:51:59,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2024-09-18 15:51:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-18 15:51:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-09-18 15:51:59,144 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 16 [2024-09-18 15:51:59,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:59,145 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-09-18 15:51:59,145 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-18 15:51:59,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-09-18 15:51:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-18 15:51:59,146 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:59,146 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:59,159 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-18 15:51:59,347 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:59,347 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:59,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:59,348 INFO L85 PathProgramCache]: Analyzing trace with hash 929587497, now seen corresponding path program 1 times [2024-09-18 15:51:59,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:59,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934110667] [2024-09-18 15:51:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:59,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:59,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817750856] [2024-09-18 15:51:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:59,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:59,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:59,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:51:59,378 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 15:51:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:59,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 15:51:59,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:51:59,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:51:59,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:59,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934110667] [2024-09-18 15:51:59,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:59,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817750856] [2024-09-18 15:51:59,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817750856] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:59,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:59,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:51:59,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563214031] [2024-09-18 15:51:59,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:59,496 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:51:59,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:59,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:51:59,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:51:59,500 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:51:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:59,590 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2024-09-18 15:51:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:51:59,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-18 15:51:59,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:59,593 INFO L225 Difference]: With dead ends: 53 [2024-09-18 15:51:59,594 INFO L226 Difference]: Without dead ends: 50 [2024-09-18 15:51:59,595 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:51:59,596 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:59,597 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 108 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:51:59,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-18 15:51:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2024-09-18 15:51:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-18 15:51:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2024-09-18 15:51:59,610 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 21 [2024-09-18 15:51:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:59,610 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2024-09-18 15:51:59,611 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:51:59,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2024-09-18 15:51:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-18 15:51:59,612 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:59,612 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:59,630 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-18 15:51:59,813 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:59,813 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:59,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:59,814 INFO L85 PathProgramCache]: Analyzing trace with hash -109210498, now seen corresponding path program 1 times [2024-09-18 15:51:59,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:59,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46361492] [2024-09-18 15:51:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:59,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:59,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464490834] [2024-09-18 15:51:59,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:59,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:59,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:59,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:51:59,843 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 15:51:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:59,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 15:51:59,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:51:59,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:51:59,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:59,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46361492] [2024-09-18 15:51:59,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:59,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464490834] [2024-09-18 15:51:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464490834] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:59,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:59,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:51:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402391441] [2024-09-18 15:51:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:59,931 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:51:59,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:59,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:51:59,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:51:59,935 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-18 15:52:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:52:00,020 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2024-09-18 15:52:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:52:00,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2024-09-18 15:52:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:52:00,023 INFO L225 Difference]: With dead ends: 75 [2024-09-18 15:52:00,023 INFO L226 Difference]: Without dead ends: 73 [2024-09-18 15:52:00,023 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:52:00,024 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:52:00,025 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 122 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:52:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-18 15:52:00,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2024-09-18 15:52:00,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-18 15:52:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2024-09-18 15:52:00,044 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 28 [2024-09-18 15:52:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:52:00,044 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2024-09-18 15:52:00,044 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-18 15:52:00,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:52:00,045 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2024-09-18 15:52:00,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-18 15:52:00,046 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:52:00,046 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:52:00,066 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-18 15:52:00,249 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:52:00,250 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:52:00,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:52:00,250 INFO L85 PathProgramCache]: Analyzing trace with hash -351538818, now seen corresponding path program 1 times [2024-09-18 15:52:00,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:52:00,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137056709] [2024-09-18 15:52:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:52:00,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:52:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:52:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:52:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-18 15:52:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-18 15:52:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-18 15:52:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-18 15:52:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-18 15:52:00,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:52:00,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137056709] [2024-09-18 15:52:00,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137056709] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:52:00,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:52:00,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-18 15:52:00,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885566348] [2024-09-18 15:52:00,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:52:00,555 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-18 15:52:00,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:52:00,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-18 15:52:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-18 15:52:00,556 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-18 15:52:00,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:52:00,731 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2024-09-18 15:52:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-18 15:52:00,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2024-09-18 15:52:00,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:52:00,734 INFO L225 Difference]: With dead ends: 72 [2024-09-18 15:52:00,734 INFO L226 Difference]: Without dead ends: 70 [2024-09-18 15:52:00,735 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-18 15:52:00,735 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:52:00,736 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 169 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:52:00,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-18 15:52:00,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-09-18 15:52:00,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 41 states have internal predecessors, (45), 23 states have call successors, (23), 8 states have call predecessors, (23), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-18 15:52:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2024-09-18 15:52:00,751 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 38 [2024-09-18 15:52:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:52:00,752 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2024-09-18 15:52:00,752 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-18 15:52:00,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:52:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2024-09-18 15:52:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-18 15:52:00,753 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:52:00,754 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:52:00,754 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-18 15:52:00,754 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:52:00,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:52:00,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1525917826, now seen corresponding path program 1 times [2024-09-18 15:52:00,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:52:00,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608081635] [2024-09-18 15:52:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:52:00,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:52:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:52:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:52:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-18 15:52:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-18 15:52:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-18 15:52:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-18 15:52:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-18 15:52:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-18 15:52:00,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:52:00,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608081635] [2024-09-18 15:52:00,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608081635] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:52:00,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244847630] [2024-09-18 15:52:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:52:00,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:52:00,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:52:00,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:52:00,987 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 15:52:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:01,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-18 15:52:01,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:52:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-18 15:52:01,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:52:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-18 15:52:01,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244847630] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-18 15:52:01,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:52:01,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 9] total 12 [2024-09-18 15:52:01,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118603192] [2024-09-18 15:52:01,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:52:01,253 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-18 15:52:01,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:52:01,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-18 15:52:01,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-09-18 15:52:01,255 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-18 15:52:01,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:52:01,343 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2024-09-18 15:52:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 15:52:01,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (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 44 [2024-09-18 15:52:01,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:52:01,345 INFO L225 Difference]: With dead ends: 76 [2024-09-18 15:52:01,345 INFO L226 Difference]: Without dead ends: 74 [2024-09-18 15:52:01,346 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-09-18 15:52:01,346 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:52:01,347 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 122 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:52:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-18 15:52:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-09-18 15:52:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 44 states have internal predecessors, (48), 23 states have call successors, (23), 9 states have call predecessors, (23), 8 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-18 15:52:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2024-09-18 15:52:01,365 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 44 [2024-09-18 15:52:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:52:01,365 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2024-09-18 15:52:01,365 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-18 15:52:01,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:52:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2024-09-18 15:52:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-18 15:52:01,367 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:52:01,367 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:52:01,383 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-18 15:52:01,567 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:52:01,568 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:52:01,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:52:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash 620409438, now seen corresponding path program 1 times [2024-09-18 15:52:01,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:52:01,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619762178] [2024-09-18 15:52:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:52:01,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:52:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:52:01,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020152156] [2024-09-18 15:52:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:52:01,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:52:01,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:52:01,592 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:52:01,595 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 15:52:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:01,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-18 15:52:01,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:52:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-18 15:52:01,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:52:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-09-18 15:52:01,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:52:01,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619762178] [2024-09-18 15:52:01,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:52:01,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020152156] [2024-09-18 15:52:01,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020152156] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-18 15:52:01,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-18 15:52:01,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-18 15:52:01,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130880517] [2024-09-18 15:52:01,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:52:01,789 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:52:01,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:52:01,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:52:01,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-18 15:52:01,790 INFO L87 Difference]: Start difference. First operand 74 states and 92 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) [2024-09-18 15:52:01,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:52:01,852 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2024-09-18 15:52:01,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:52:01,853 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 51 [2024-09-18 15:52:01,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:52:01,854 INFO L225 Difference]: With dead ends: 80 [2024-09-18 15:52:01,854 INFO L226 Difference]: Without dead ends: 78 [2024-09-18 15:52:01,855 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-18 15:52:01,855 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:52:01,856 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 89 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:52:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-18 15:52:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2024-09-18 15:52:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-18 15:52:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2024-09-18 15:52:01,872 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 51 [2024-09-18 15:52:01,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:52:01,872 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2024-09-18 15:52:01,873 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (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) [2024-09-18 15:52:01,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:52:01,873 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2024-09-18 15:52:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-18 15:52:01,874 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:52:01,874 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:52:01,891 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-18 15:52:02,075 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-18 15:52:02,075 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:52:02,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:52:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash 741623478, now seen corresponding path program 1 times [2024-09-18 15:52:02,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:52:02,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972583271] [2024-09-18 15:52:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:52:02,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:52:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:52:02,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255250349] [2024-09-18 15:52:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:52:02,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:52:02,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:52:02,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:52:02,092 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-18 15:52:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:52:02,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-18 15:52:02,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:52:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-18 15:52:02,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:52:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-18 15:52:02,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:52:02,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972583271] [2024-09-18 15:52:02,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:52:02,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255250349] [2024-09-18 15:52:02,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255250349] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-18 15:52:02,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-18 15:52:02,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-09-18 15:52:02,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726950426] [2024-09-18 15:52:02,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:52:02,672 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-18 15:52:02,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:52:02,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-18 15:52:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-09-18 15:52:02,675 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-18 15:52:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:52:02,806 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2024-09-18 15:52:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:52:02,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2024-09-18 15:52:02,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:52:02,807 INFO L225 Difference]: With dead ends: 61 [2024-09-18 15:52:02,808 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 15:52:02,808 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-09-18 15:52:02,809 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:52:02,810 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 124 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:52:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 15:52:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 15:52:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-18 15:52:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 15:52:02,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2024-09-18 15:52:02,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:52:02,813 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 15:52:02,813 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-18 15:52:02,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:52:02,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 15:52:02,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 15:52:02,816 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 15:52:02,833 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-18 15:52:03,017 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:52:03,021 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:52:03,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 15:52:03,709 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 15:52:03,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 03:52:03 BoogieIcfgContainer [2024-09-18 15:52:03,725 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 15:52:03,726 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 15:52:03,726 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 15:52:03,726 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 15:52:03,727 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:51:58" (3/4) ... [2024-09-18 15:52:03,728 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 15:52:03,782 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 15:52:03,782 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 15:52:03,783 INFO L158 Benchmark]: Toolchain (without parser) took 6019.87ms. Allocated memory was 136.3MB in the beginning and 205.5MB in the end (delta: 69.2MB). Free memory was 80.9MB in the beginning and 161.6MB in the end (delta: -80.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:52:03,783 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 136.3MB. Free memory was 100.7MB in the beginning and 100.5MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:52:03,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.17ms. Allocated memory is still 136.3MB. Free memory was 80.9MB in the beginning and 69.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-18 15:52:03,784 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.50ms. Allocated memory is still 136.3MB. Free memory was 69.3MB in the beginning and 68.4MB in the end (delta: 886.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:52:03,785 INFO L158 Benchmark]: Boogie Preprocessor took 39.17ms. Allocated memory is still 136.3MB. Free memory was 68.4MB in the beginning and 66.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:52:03,785 INFO L158 Benchmark]: RCFGBuilder took 320.36ms. Allocated memory is still 136.3MB. Free memory was 66.7MB in the beginning and 53.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-18 15:52:03,786 INFO L158 Benchmark]: TraceAbstraction took 5331.47ms. Allocated memory was 136.3MB in the beginning and 205.5MB in the end (delta: 69.2MB). Free memory was 52.9MB in the beginning and 163.7MB in the end (delta: -110.7MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. [2024-09-18 15:52:03,786 INFO L158 Benchmark]: Witness Printer took 56.51ms. Allocated memory is still 205.5MB. Free memory was 163.7MB in the beginning and 161.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:52:03,788 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 136.3MB. Free memory was 100.7MB in the beginning and 100.5MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.17ms. Allocated memory is still 136.3MB. Free memory was 80.9MB in the beginning and 69.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.50ms. Allocated memory is still 136.3MB. Free memory was 69.3MB in the beginning and 68.4MB in the end (delta: 886.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.17ms. Allocated memory is still 136.3MB. Free memory was 68.4MB in the beginning and 66.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 320.36ms. Allocated memory is still 136.3MB. Free memory was 66.7MB in the beginning and 53.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5331.47ms. Allocated memory was 136.3MB in the beginning and 205.5MB in the end (delta: 69.2MB). Free memory was 52.9MB in the beginning and 163.7MB in the end (delta: -110.7MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. * Witness Printer took 56.51ms. Allocated memory is still 205.5MB. Free memory was 163.7MB in the beginning and 161.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 892 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 648 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 361 IncrementalHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 244 mSDtfsCounter, 361 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 351 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=6, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 28 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 476 NumberOfCodeBlocks, 476 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 443 ConstructedInterpolants, 0 QuantifiedInterpolants, 1171 SizeOfPredicates, 12 NumberOfNonLiveVariables, 571 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 465/490 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: 45]: Loop Invariant Derived loop invariant: ((((1 <= r) && (((((__int128) q * y) + r) + ((__int128) a * y)) == ((__int128) b + x))) && (1 <= y)) && (b == ((__int128) a * y))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((__int128) q * y) + r) + ((__int128) a * y)) == ((__int128) b + x)) && (1 <= y)) && (b == ((__int128) a * y))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-18 15:52:03,808 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