./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.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 1c9e40c4fcbf0a2270c810eae17f30e2b9a539f72a78b9b7061997095813940b --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 19:14:52,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:14:52,645 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:14:52,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:14:52,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:14:52,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:14:52,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:14:52,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:14:52,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:14:52,698 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:14:52,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:14:52,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:14:52,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:14:52,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:14:52,704 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:14:52,704 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:14:52,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:14:52,705 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:14:52,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:14:52,705 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:14:52,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:14:52,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:14:52,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:14:52,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:14:52,710 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:14:52,711 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:14:52,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:14:52,711 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:14:52,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:14:52,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:14:52,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:14:52,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:14:52,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:14:52,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:14:52,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:14:52,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:14:52,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:14:52,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:14:52,714 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:14:52,714 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:14:52,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:14:52,716 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:14:52,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c9e40c4fcbf0a2270c810eae17f30e2b9a539f72a78b9b7061997095813940b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 19:14:52,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:14:52,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:14:52,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:14:52,949 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:14:52,953 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:14:52,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2024-09-17 19:14:54,218 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:14:54,365 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:14:54,365 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2024-09-17 19:14:54,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/07739153e/30f345da70c74019af507111602f1cce/FLAG7c8853db1 [2024-09-17 19:14:54,385 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/07739153e/30f345da70c74019af507111602f1cce [2024-09-17 19:14:54,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:14:54,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 19:14:54,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:14:54,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:14:54,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:14:54,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65bcee16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54, skipping insertion in model container [2024-09-17 19:14:54,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,409 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:14:54,525 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c[458,471] [2024-09-17 19:14:54,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:14:54,546 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 19:14:54,556 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c[458,471] [2024-09-17 19:14:54,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:14:54,583 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:14:54,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54 WrapperNode [2024-09-17 19:14:54,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:14:54,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:14:54,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:14:54,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:14:54,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,601 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 19:14:54,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:14:54,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:14:54,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:14:54,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:14:54,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,623 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-17 19:14:54,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,630 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:14:54,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:14:54,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:14:54,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:14:54,631 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (1/1) ... [2024-09-17 19:14:54,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:14:54,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:54,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-17 19:14:54,674 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-17 19:14:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:14:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 19:14:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 19:14:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 19:14:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 19:14:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 19:14:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 19:14:54,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 19:14:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:14:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:14:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 19:14:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 19:14:54,762 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:14:54,763 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:14:54,884 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-17 19:14:54,884 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:14:54,907 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:14:54,907 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-17 19:14:54,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:14:54 BoogieIcfgContainer [2024-09-17 19:14:54,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:14:54,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:14:54,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:14:54,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:14:54,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:14:54" (1/3) ... [2024-09-17 19:14:54,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7b9dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:14:54, skipping insertion in model container [2024-09-17 19:14:54,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:54" (2/3) ... [2024-09-17 19:14:54,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7b9dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:14:54, skipping insertion in model container [2024-09-17 19:14:54,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:14:54" (3/3) ... [2024-09-17 19:14:54,914 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound10.c [2024-09-17 19:14:54,926 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:14:54,926 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 19:14:54,962 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:14:54,967 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;@31349a11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:14:54,967 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 19:14:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-17 19:14:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-17 19:14:54,975 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:54,975 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:14:54,979 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:54,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:54,984 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-09-17 19:14:54,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:54,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219568921] [2024-09-17 19:14:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:54,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:55,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:14:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:55,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:14:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:55,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:14:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:14:55,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:55,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219568921] [2024-09-17 19:14:55,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219568921] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:14:55,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:14:55,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 19:14:55,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15467782] [2024-09-17 19:14:55,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:14:55,161 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 19:14:55,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:55,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 19:14:55,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:14:55,183 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 19:14:55,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:55,201 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-17 19:14:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 19:14:55,203 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-17 19:14:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:55,207 INFO L225 Difference]: With dead ends: 48 [2024-09-17 19:14:55,208 INFO L226 Difference]: Without dead ends: 23 [2024-09-17 19:14:55,210 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:14:55,212 INFO L434 NwaCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:14:55,213 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:14:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-17 19:14:55,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-17 19:14:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-17 19:14:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-17 19:14:55,240 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-09-17 19:14:55,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:55,240 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-17 19:14:55,241 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 19:14:55,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-17 19:14:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-17 19:14:55,242 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:55,242 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:14:55,243 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:14:55,243 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:55,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:55,243 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-09-17 19:14:55,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:55,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448318544] [2024-09-17 19:14:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:55,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:14:55,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736925114] [2024-09-17 19:14:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:55,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:55,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:55,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:14:55,277 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:14:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:55,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 19:14:55,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:14:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:14:55,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:14:55,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:55,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448318544] [2024-09-17 19:14:55,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:14:55,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736925114] [2024-09-17 19:14:55,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736925114] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:14:55,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:14:55,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:14:55,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920027021] [2024-09-17 19:14:55,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:14:55,450 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:14:55,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:55,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:14:55,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:14:55,451 INFO L87 Difference]: Start difference. First operand 23 states and 26 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-17 19:14:55,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:55,532 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-17 19:14:55,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:14:55,533 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-17 19:14:55,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:55,534 INFO L225 Difference]: With dead ends: 34 [2024-09-17 19:14:55,534 INFO L226 Difference]: Without dead ends: 30 [2024-09-17 19:14:55,535 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 [2024-09-17 19:14:55,536 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:14:55,536 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:14:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-17 19:14:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-17 19:14:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:14:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-17 19:14:55,547 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-09-17 19:14:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:55,547 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-17 19:14:55,548 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-17 19:14:55,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-17 19:14:55,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-17 19:14:55,550 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:55,550 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:14:55,562 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 19:14:55,754 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:55,755 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:55,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-09-17 19:14:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123359378] [2024-09-17 19:14:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:14:55,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597146763] [2024-09-17 19:14:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:55,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:55,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:55,793 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:14:55,801 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:14:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:55,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-17 19:14:55,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:14:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:14:55,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:14:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-17 19:14:55,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123359378] [2024-09-17 19:14:55,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:14:55,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597146763] [2024-09-17 19:14:55,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597146763] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-17 19:14:55,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:14:55,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-17 19:14:55,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272352824] [2024-09-17 19:14:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:14:55,969 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:14:55,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:55,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:14:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-17 19:14:55,970 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:14:56,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:56,008 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-17 19:14:56,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:14:56,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-17 19:14:56,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:56,010 INFO L225 Difference]: With dead ends: 36 [2024-09-17 19:14:56,010 INFO L226 Difference]: Without dead ends: 32 [2024-09-17 19:14:56,010 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-17 19:14:56,011 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:14:56,011 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:14:56,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-17 19:14:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-17 19:14:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:14:56,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-17 19:14:56,020 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-09-17 19:14:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:56,020 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-17 19:14:56,021 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:14:56,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-17 19:14:56,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-17 19:14:56,022 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:56,022 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:14:56,042 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-17 19:14:56,226 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:56,227 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:56,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:56,228 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-09-17 19:14:56,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:56,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454876440] [2024-09-17 19:14:56,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:56,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:14:56,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728447735] [2024-09-17 19:14:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:56,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:56,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:56,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:14:56,273 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 19:14:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:56,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-17 19:14:56,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:14:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-17 19:14:56,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:14:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-17 19:14:56,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454876440] [2024-09-17 19:14:56,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:14:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728447735] [2024-09-17 19:14:56,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728447735] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:14:56,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:14:56,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-17 19:14:56,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252228919] [2024-09-17 19:14:56,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:14:56,868 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-17 19:14:56,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:56,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-17 19:14:56,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-17 19:14:56,870 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-17 19:14:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:57,133 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-09-17 19:14:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-17 19:14:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-09-17 19:14:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:57,134 INFO L225 Difference]: With dead ends: 53 [2024-09-17 19:14:57,134 INFO L226 Difference]: Without dead ends: 45 [2024-09-17 19:14:57,135 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-09-17 19:14:57,135 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:14:57,136 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 178 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:14:57,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-17 19:14:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-17 19:14:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-17 19:14:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-09-17 19:14:57,147 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 39 [2024-09-17 19:14:57,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:57,148 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-09-17 19:14:57,148 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-17 19:14:57,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:57,148 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-09-17 19:14:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-17 19:14:57,149 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:57,153 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:14:57,179 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-17 19:14:57,353 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:57,354 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:57,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:57,354 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-09-17 19:14:57,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:57,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615992710] [2024-09-17 19:14:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:57,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:14:57,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347026064] [2024-09-17 19:14:57,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:14:57,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:57,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:57,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:14:57,394 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 19:14:57,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:14:57,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:14:57,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-17 19:14:57,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:14:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 38 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-17 19:14:57,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:15:33,277 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (not (= (+ 3 c_main_~c~0) c_main_~k~0)) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)) (= (+ (* c_main_~y~0 c_main_~k~0) (* 3 c_main_~k~0)) (+ (* 6 c_main_~y~0) 9 .cse0)))) is different from false [2024-09-17 19:15:49,353 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (= (+ 16 (* 8 c_main_~y~0) .cse0) (+ (* c_main_~y~0 c_main_~k~0) (* 4 c_main_~k~0))) (not (= (+ c_main_~c~0 4) c_main_~k~0)) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)))) is different from false [2024-09-17 19:15:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 49 trivial. 21 not checked. [2024-09-17 19:15:57,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:15:57,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615992710] [2024-09-17 19:15:57,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:15:57,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347026064] [2024-09-17 19:15:57,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347026064] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:15:57,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:15:57,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 27 [2024-09-17 19:15:57,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211101319] [2024-09-17 19:15:57,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:15:57,408 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-17 19:15:57,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:15:57,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-17 19:15:57,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=509, Unknown=4, NotChecked=94, Total=702 [2024-09-17 19:15:57,410 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-17 19:15:57,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:15:57,904 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2024-09-17 19:15:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-17 19:15:57,904 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) Word has length 60 [2024-09-17 19:15:57,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:15:57,905 INFO L225 Difference]: With dead ends: 68 [2024-09-17 19:15:57,906 INFO L226 Difference]: Without dead ends: 60 [2024-09-17 19:15:57,906 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=194, Invalid=1070, Unknown=4, NotChecked=138, Total=1406 [2024-09-17 19:15:57,910 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:15:57,911 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 296 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 288 Invalid, 0 Unknown, 86 Unchecked, 0.2s Time] [2024-09-17 19:15:57,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-17 19:15:57,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2024-09-17 19:15:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-17 19:15:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2024-09-17 19:15:57,936 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 60 [2024-09-17 19:15:57,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:15:57,940 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2024-09-17 19:15:57,940 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-17 19:15:57,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:15:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2024-09-17 19:15:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-17 19:15:57,942 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:15:57,942 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:15:57,966 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-17 19:15:58,142 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:15:58,143 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:15:58,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:15:58,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1026868046, now seen corresponding path program 3 times [2024-09-17 19:15:58,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:15:58,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698955916] [2024-09-17 19:15:58,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:15:58,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:15:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:15:58,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086298695] [2024-09-17 19:15:58,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 19:15:58,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:15:58,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:15:58,209 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:15:58,210 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 19:15:58,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-09-17 19:15:58,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:15:58,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-17 19:15:58,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:15:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 26 proven. 100 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-17 19:15:58,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:16:06,748 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)) (= (+ (* c_main_~c~0 4) (* c_main_~c~0 c_main_~y~0)) (+ (* 4 c_main_~y~0) .cse0)))) is different from false [2024-09-17 19:16:14,918 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:16:34,959 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:16:38,969 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_40 Int) (v_main_~c~0_BEFORE_CALL_27 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40))) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 6) (* 7 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40) (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 10) .cse0) 12) 0) (= (+ (* v_main_~c~0_BEFORE_CALL_27 4) (* v_main_~y~0_BEFORE_CALL_40 v_main_~c~0_BEFORE_CALL_27)) (+ (* v_main_~y~0_BEFORE_CALL_40 4) .cse0)))))) is different from true [2024-09-17 19:16:55,183 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:17:11,214 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:17:15,219 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_40 Int) (v_main_~c~0_BEFORE_CALL_27 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40))) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 6) (* 7 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40) (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 10) .cse0) 12) 0) (= (+ (* v_main_~c~0_BEFORE_CALL_27 4) (* v_main_~y~0_BEFORE_CALL_40 v_main_~c~0_BEFORE_CALL_27)) (+ (* v_main_~y~0_BEFORE_CALL_40 4) .cse0))))) (= c___VERIFIER_assert_~cond 0)) is different from true [2024-09-17 19:17:27,291 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)) (= (+ (* 5 c_main_~y~0) .cse0) (+ (* 5 c_main_~c~0) (* c_main_~c~0 c_main_~y~0))))) is different from false [2024-09-17 19:17:43,588 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (= (+ (* 6 c_main_~y~0) .cse0) (+ (* 6 c_main_~c~0) (* c_main_~c~0 c_main_~y~0))) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)))) is different from false [2024-09-17 19:17:59,641 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (= (+ (* 7 c_main_~c~0) (* c_main_~c~0 c_main_~y~0)) (+ (* 7 c_main_~y~0) .cse0)) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)))) is different from false [2024-09-17 19:18:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 26 proven. 22 refuted. 15 times theorem prover too weak. 124 trivial. 63 not checked. [2024-09-17 19:18:07,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:18:07,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698955916] [2024-09-17 19:18:07,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:18:07,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086298695] [2024-09-17 19:18:07,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086298695] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:18:07,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:18:07,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2024-09-17 19:18:07,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889118549] [2024-09-17 19:18:07,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:18:07,679 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-17 19:18:07,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:18:07,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-17 19:18:07,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=391, Unknown=6, NotChecked=270, Total=756 [2024-09-17 19:18:07,680 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 19 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2024-09-17 19:18:08,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:18:08,059 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2024-09-17 19:18:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-17 19:18:08,060 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 19 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) Word has length 81 [2024-09-17 19:18:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:18:08,060 INFO L225 Difference]: With dead ends: 63 [2024-09-17 19:18:08,060 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 19:18:08,061 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=167, Invalid=781, Unknown=6, NotChecked=378, Total=1332 [2024-09-17 19:18:08,062 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:18:08,062 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 467 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 321 Invalid, 0 Unknown, 255 Unchecked, 0.2s Time] [2024-09-17 19:18:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 19:18:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 19:18:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:18:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 19:18:08,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2024-09-17 19:18:08,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:18:08,063 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 19:18:08,063 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 19 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2024-09-17 19:18:08,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:18:08,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 19:18:08,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 19:18:08,066 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 19:18:08,081 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-17 19:18:08,270 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-17 19:18:08,273 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-09-17 19:18:08,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 19:18:08,765 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:18:08,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 07:18:08 BoogieIcfgContainer [2024-09-17 19:18:08,778 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 19:18:08,779 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-17 19:18:08,779 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-17 19:18:08,779 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-17 19:18:08,779 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:14:54" (3/4) ... [2024-09-17 19:18:08,781 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-17 19:18:08,821 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-17 19:18:08,821 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-17 19:18:08,822 INFO L158 Benchmark]: Toolchain (without parser) took 194433.98ms. Allocated memory was 169.9MB in the beginning and 230.7MB in the end (delta: 60.8MB). Free memory was 100.0MB in the beginning and 91.8MB in the end (delta: 8.2MB). Peak memory consumption was 69.5MB. Max. memory is 16.1GB. [2024-09-17 19:18:08,822 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 169.9MB. Free memory was 122.2MB in the beginning and 122.0MB in the end (delta: 243.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:18:08,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.57ms. Allocated memory is still 169.9MB. Free memory was 99.8MB in the beginning and 88.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-17 19:18:08,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.89ms. Allocated memory is still 169.9MB. Free memory was 88.1MB in the beginning and 87.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:18:08,822 INFO L158 Benchmark]: Boogie Preprocessor took 27.77ms. Allocated memory is still 169.9MB. Free memory was 87.0MB in the beginning and 85.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:18:08,823 INFO L158 Benchmark]: RCFGBuilder took 277.50ms. Allocated memory was 169.9MB in the beginning and 230.7MB in the end (delta: 60.8MB). Free memory was 85.4MB in the beginning and 195.5MB in the end (delta: -110.2MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2024-09-17 19:18:08,823 INFO L158 Benchmark]: TraceAbstraction took 193869.30ms. Allocated memory is still 230.7MB. Free memory was 194.5MB in the beginning and 93.9MB in the end (delta: 100.6MB). Peak memory consumption was 100.6MB. Max. memory is 16.1GB. [2024-09-17 19:18:08,823 INFO L158 Benchmark]: Witness Printer took 42.50ms. Allocated memory is still 230.7MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:18:08,824 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 169.9MB. Free memory was 122.2MB in the beginning and 122.0MB in the end (delta: 243.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.57ms. Allocated memory is still 169.9MB. Free memory was 99.8MB in the beginning and 88.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.89ms. Allocated memory is still 169.9MB. Free memory was 88.1MB in the beginning and 87.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.77ms. Allocated memory is still 169.9MB. Free memory was 87.0MB in the beginning and 85.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 277.50ms. Allocated memory was 169.9MB in the beginning and 230.7MB in the end (delta: 60.8MB). Free memory was 85.4MB in the beginning and 195.5MB in the end (delta: -110.2MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * TraceAbstraction took 193869.30ms. Allocated memory is still 230.7MB. Free memory was 194.5MB in the beginning and 93.9MB in the end (delta: 100.6MB). Peak memory consumption was 100.6MB. Max. memory is 16.1GB. * Witness Printer took 42.50ms. Allocated memory is still 230.7MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 193.3s, OverallIterations: 6, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 1119 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 341 IncrementalHoareTripleChecker+Unchecked, 974 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 771 IncrementalHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 145 mSDtfsCounter, 771 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 472 GetRequests, 366 SyntacticMatches, 9 SemanticMatches, 97 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 52.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=5, InterpolantAutomatonStates: 63, 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, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 190.2s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 448 ConstructedInterpolants, 3 QuantifiedInterpolants, 3134 SizeOfPredicates, 13 NumberOfNonLiveVariables, 598 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 503/786 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: 28]: Loop Invariant Derived loop invariant: (((((k <= 256) && ((c + ((__int128) c * y)) == (y + ((__int128) y * y)))) && ((((__int128) c * 2) + ((__int128) c * y)) == (((__int128) y * 2) + ((__int128) y * y)))) && ((((2 * ((((((__int128) y * y) * y) * y) * y) * y)) + (6 * (((((__int128) y * y) * y) * y) * y))) + (5 * ((((__int128) y * y) * y) * y))) == (((__int128) x * 12) + ((__int128) y * y)))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-17 19:18:08,856 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