./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 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/prodbin-ll_unwindbound50.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 c54d9189042c7bc9bae976b882c7c0538c4797366038f58e7e5d207abe4f931e --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 02:51:17,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 02:51:17,655 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 02:51:17,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 02:51:17,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 02:51:17,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 02:51:17,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 02:51:17,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 02:51:17,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 02:51:17,685 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 02:51:17,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 02:51:17,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 02:51:17,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 02:51:17,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 02:51:17,686 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 02:51:17,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 02:51:17,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 02:51:17,687 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 02:51:17,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 02:51:17,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 02:51:17,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 02:51:17,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 02:51:17,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 02:51:17,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 02:51:17,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 02:51:17,689 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 02:51:17,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 02:51:17,689 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 02:51:17,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 02:51:17,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 02:51:17,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 02:51:17,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 02:51:17,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:51:17,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 02:51:17,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 02:51:17,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 02:51:17,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 02:51:17,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 02:51:17,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 02:51:17,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 02:51:17,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 02:51:17,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 02:51:17,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c54d9189042c7bc9bae976b882c7c0538c4797366038f58e7e5d207abe4f931e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 02:51:17,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 02:51:17,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 02:51:17,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 02:51:17,911 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 02:51:17,911 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 02:51:17,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c [2024-09-13 02:51:19,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 02:51:19,212 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 02:51:19,212 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c [2024-09-13 02:51:19,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/cf1691ac2/ab42ec69b9544e93a6b075793f472487/FLAG8f046fba1 [2024-09-13 02:51:19,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/cf1691ac2/ab42ec69b9544e93a6b075793f472487 [2024-09-13 02:51:19,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 02:51:19,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 02:51:19,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 02:51:19,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 02:51:19,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 02:51:19,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9e1972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19, skipping insertion in model container [2024-09-13 02:51:19,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,666 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 02:51:19,778 WARN L247 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/prodbin-ll_unwindbound50.c[1263,1276] [2024-09-13 02:51:19,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:51:19,795 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 02:51:19,803 WARN L247 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/prodbin-ll_unwindbound50.c[1263,1276] [2024-09-13 02:51:19,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:51:19,818 INFO L204 MainTranslator]: Completed translation [2024-09-13 02:51:19,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19 WrapperNode [2024-09-13 02:51:19,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 02:51:19,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 02:51:19,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 02:51:19,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 02:51:19,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,832 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 02:51:19,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 02:51:19,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 02:51:19,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 02:51:19,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 02:51:19,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,841 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,849 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-13 02:51:19,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 02:51:19,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 02:51:19,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 02:51:19,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 02:51:19,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (1/1) ... [2024-09-13 02:51:19,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:51:19,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:51:19,891 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) [2024-09-13 02:51:19,896 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 [2024-09-13 02:51:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 02:51:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 02:51:19,928 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 02:51:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 02:51:19,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 02:51:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 02:51:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 02:51:19,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 02:51:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 02:51:19,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 02:51:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 02:51:19,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 02:51:19,973 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 02:51:19,974 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 02:51:20,080 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 02:51:20,080 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 02:51:20,102 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 02:51:20,102 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 02:51:20,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:51:20 BoogieIcfgContainer [2024-09-13 02:51:20,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 02:51:20,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 02:51:20,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 02:51:20,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 02:51:20,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 02:51:19" (1/3) ... [2024-09-13 02:51:20,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c3777a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:51:20, skipping insertion in model container [2024-09-13 02:51:20,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:51:19" (2/3) ... [2024-09-13 02:51:20,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c3777a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:51:20, skipping insertion in model container [2024-09-13 02:51:20,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:51:20" (3/3) ... [2024-09-13 02:51:20,112 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound50.c [2024-09-13 02:51:20,125 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 02:51:20,125 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 02:51:20,179 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 02:51:20,185 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;@19d6263e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 02:51:20,185 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 02:51:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 02:51:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-13 02:51:20,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:51:20,196 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:51:20,196 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:51:20,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1841004279, now seen corresponding path program 1 times [2024-09-13 02:51:20,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:51:20,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293096383] [2024-09-13 02:51:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:20,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:51:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:20,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:51:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:20,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:51:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:51:20,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:51:20,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293096383] [2024-09-13 02:51:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293096383] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:51:20,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:51:20,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 02:51:20,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046576858] [2024-09-13 02:51:20,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:51:20,341 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 02:51:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:51:20,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 02:51:20,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 02:51:20,359 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:51:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:51:20,408 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-09-13 02:51:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 02:51:20,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-13 02:51:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:51:20,415 INFO L225 Difference]: With dead ends: 49 [2024-09-13 02:51:20,416 INFO L226 Difference]: Without dead ends: 25 [2024-09-13 02:51:20,418 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 02:51:20,423 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:51:20,424 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:51:20,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-13 02:51:20,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-09-13 02:51:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 02:51:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-09-13 02:51:20,452 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2024-09-13 02:51:20,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:51:20,452 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-09-13 02:51:20,452 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:51:20,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:20,453 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-09-13 02:51:20,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-13 02:51:20,454 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:51:20,454 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:51:20,454 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 02:51:20,454 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:51:20,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash 233646544, now seen corresponding path program 1 times [2024-09-13 02:51:20,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:51:20,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379217506] [2024-09-13 02:51:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:20,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:51:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:20,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:51:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:20,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:51:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:51:20,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:51:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379217506] [2024-09-13 02:51:20,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379217506] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:51:20,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:51:20,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:51:20,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307832141] [2024-09-13 02:51:20,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:51:20,564 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:51:20,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:51:20,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:51:20,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:51:20,565 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 02:51:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:51:20,674 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-09-13 02:51:20,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 02:51:20,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-09-13 02:51:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:51:20,676 INFO L225 Difference]: With dead ends: 33 [2024-09-13 02:51:20,677 INFO L226 Difference]: Without dead ends: 26 [2024-09-13 02:51:20,677 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 02:51:20,678 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:51:20,680 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 43 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:51:20,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-13 02:51:20,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-13 02:51:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 02:51:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-13 02:51:20,690 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2024-09-13 02:51:20,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:51:20,690 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-13 02:51:20,691 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 02:51:20,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:20,691 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-13 02:51:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-13 02:51:20,692 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:51:20,692 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:51:20,692 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 02:51:20,693 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:51:20,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:20,694 INFO L85 PathProgramCache]: Analyzing trace with hash 235434004, now seen corresponding path program 1 times [2024-09-13 02:51:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:51:20,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548573807] [2024-09-13 02:51:20,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:20,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:51:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:51:20,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727394470] [2024-09-13 02:51:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:20,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:20,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:51:20,724 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) [2024-09-13 02:51:20,725 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 02:51:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:20,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 02:51:20,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:51:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:51:20,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 02:51:20,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:51:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548573807] [2024-09-13 02:51:20,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:51:20,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727394470] [2024-09-13 02:51:20,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727394470] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:51:20,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:51:20,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-13 02:51:20,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174543910] [2024-09-13 02:51:20,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:51:20,878 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 02:51:20,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:51:20,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 02:51:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-13 02:51:20,879 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:51:20,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:51:20,951 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-09-13 02:51:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 02:51:20,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-09-13 02:51:20,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:51:20,953 INFO L225 Difference]: With dead ends: 41 [2024-09-13 02:51:20,954 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 02:51:20,954 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-09-13 02:51:20,956 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:51:20,956 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 103 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:51:20,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 02:51:20,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-13 02:51:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 02:51:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-13 02:51:20,964 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 17 [2024-09-13 02:51:20,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:51:20,964 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-13 02:51:20,964 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:51:20,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-13 02:51:20,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 02:51:20,965 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:51:20,965 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:51:20,978 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 02:51:21,166 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:21,166 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:51:21,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1090652054, now seen corresponding path program 1 times [2024-09-13 02:51:21,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:51:21,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857769684] [2024-09-13 02:51:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:21,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:51:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:21,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:51:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:21,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:51:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:21,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 02:51:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:51:21,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:51:21,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857769684] [2024-09-13 02:51:21,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857769684] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:51:21,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161534691] [2024-09-13 02:51:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:21,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:21,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:51:21,299 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) [2024-09-13 02:51:21,300 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 02:51:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:21,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 02:51:21,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:51:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:51:21,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:51:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:51:21,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161534691] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:51:21,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 02:51:21,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2024-09-13 02:51:21,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193990701] [2024-09-13 02:51:21,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 02:51:21,426 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 02:51:21,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:51:21,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 02:51:21,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-09-13 02:51:21,427 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 7 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 02:51:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:51:21,566 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2024-09-13 02:51:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 02:51:21,566 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 7 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 27 [2024-09-13 02:51:21,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:51:21,567 INFO L225 Difference]: With dead ends: 69 [2024-09-13 02:51:21,567 INFO L226 Difference]: Without dead ends: 62 [2024-09-13 02:51:21,568 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-09-13 02:51:21,568 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 56 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:51:21,569 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 81 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:51:21,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-13 02:51:21,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2024-09-13 02:51:21,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 44 states have internal predecessors, (52), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 02:51:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-09-13 02:51:21,586 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 27 [2024-09-13 02:51:21,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:51:21,586 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-09-13 02:51:21,586 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 7 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 02:51:21,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-09-13 02:51:21,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 02:51:21,587 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:51:21,587 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:51:21,606 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 02:51:21,787 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:21,788 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:51:21,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:21,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1088864594, now seen corresponding path program 1 times [2024-09-13 02:51:21,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:51:21,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147258917] [2024-09-13 02:51:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:21,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:51:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:51:21,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933762128] [2024-09-13 02:51:21,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:21,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:21,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:51:21,818 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) [2024-09-13 02:51:21,820 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 02:51:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:21,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-13 02:51:21,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:51:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:51:22,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:51:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:51:25,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:51:25,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147258917] [2024-09-13 02:51:25,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:51:25,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933762128] [2024-09-13 02:51:25,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933762128] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:51:25,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:51:25,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-09-13 02:51:25,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115961523] [2024-09-13 02:51:25,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:51:25,370 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 02:51:25,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:51:25,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 02:51:25,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-09-13 02:51:25,371 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 02:51:25,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:51:25,608 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2024-09-13 02:51:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 02:51:25,608 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-13 02:51:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:51:25,610 INFO L225 Difference]: With dead ends: 91 [2024-09-13 02:51:25,610 INFO L226 Difference]: Without dead ends: 89 [2024-09-13 02:51:25,611 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-09-13 02:51:25,611 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:51:25,611 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 173 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:51:25,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-13 02:51:25,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2024-09-13 02:51:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.21875) internal successors, (78), 69 states have internal predecessors, (78), 13 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 02:51:25,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2024-09-13 02:51:25,627 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 27 [2024-09-13 02:51:25,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:51:25,627 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2024-09-13 02:51:25,627 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 02:51:25,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2024-09-13 02:51:25,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 02:51:25,628 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:51:25,628 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:51:25,654 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 02:51:25,839 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:25,840 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:51:25,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1898211220, now seen corresponding path program 1 times [2024-09-13 02:51:25,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:51:25,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914544599] [2024-09-13 02:51:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:25,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:51:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:51:25,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108930361] [2024-09-13 02:51:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:25,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:25,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:51:25,851 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) [2024-09-13 02:51:25,852 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 02:51:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:25,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 02:51:25,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:51:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:51:26,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:51:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:51:26,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:51:26,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914544599] [2024-09-13 02:51:26,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:51:26,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108930361] [2024-09-13 02:51:26,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108930361] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:51:26,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:51:26,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-13 02:51:26,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395106296] [2024-09-13 02:51:26,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:51:26,367 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 02:51:26,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:51:26,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 02:51:26,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-09-13 02:51:26,368 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-13 02:51:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:51:26,642 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2024-09-13 02:51:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 02:51:26,643 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 27 [2024-09-13 02:51:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:51:26,644 INFO L225 Difference]: With dead ends: 138 [2024-09-13 02:51:26,644 INFO L226 Difference]: Without dead ends: 127 [2024-09-13 02:51:26,645 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-09-13 02:51:26,645 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:51:26,645 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 173 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:51:26,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-13 02:51:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 90. [2024-09-13 02:51:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 70 states have internal predecessors, (81), 12 states have call successors, (12), 11 states have call predecessors, (12), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 02:51:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2024-09-13 02:51:26,663 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 27 [2024-09-13 02:51:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:51:26,663 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2024-09-13 02:51:26,663 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-13 02:51:26,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2024-09-13 02:51:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-13 02:51:26,664 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:51:26,664 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:51:26,676 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 02:51:26,865 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:26,866 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:51:26,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:26,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2085342267, now seen corresponding path program 1 times [2024-09-13 02:51:26,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:51:26,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13348919] [2024-09-13 02:51:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:26,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:51:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:51:26,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378240683] [2024-09-13 02:51:26,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:26,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:26,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:51:26,878 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) [2024-09-13 02:51:26,879 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 02:51:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:26,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 02:51:26,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:51:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 02:51:26,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:51:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 02:51:27,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:51:27,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13348919] [2024-09-13 02:51:27,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:51:27,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378240683] [2024-09-13 02:51:27,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378240683] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:51:27,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:51:27,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-09-13 02:51:27,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289738356] [2024-09-13 02:51:27,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:51:27,023 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 02:51:27,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:51:27,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 02:51:27,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-13 02:51:27,024 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 02:51:27,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:51:27,112 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2024-09-13 02:51:27,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 02:51:27,113 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2024-09-13 02:51:27,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:51:27,114 INFO L225 Difference]: With dead ends: 99 [2024-09-13 02:51:27,114 INFO L226 Difference]: Without dead ends: 89 [2024-09-13 02:51:27,114 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-09-13 02:51:27,116 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:51:27,116 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 108 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:51:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-13 02:51:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2024-09-13 02:51:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 68 states have internal predecessors, (75), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 02:51:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2024-09-13 02:51:27,139 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 33 [2024-09-13 02:51:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:51:27,140 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2024-09-13 02:51:27,140 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 02:51:27,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2024-09-13 02:51:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-13 02:51:27,141 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:51:27,141 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:51:27,159 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 02:51:27,341 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 02:51:27,341 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:51:27,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash -134747104, now seen corresponding path program 1 times [2024-09-13 02:51:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:51:27,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621259517] [2024-09-13 02:51:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:27,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:51:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:51:27,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381515326] [2024-09-13 02:51:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:27,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:27,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:51:27,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:51:27,363 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 02:51:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:27,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-13 02:51:27,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:51:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 02:51:28,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:51:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-13 02:51:28,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:51:28,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621259517] [2024-09-13 02:51:28,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:51:28,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381515326] [2024-09-13 02:51:28,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381515326] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:51:28,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:51:28,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 23 [2024-09-13 02:51:28,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417855282] [2024-09-13 02:51:28,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:51:28,797 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-13 02:51:28,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:51:28,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-13 02:51:28,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-09-13 02:51:28,798 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-13 02:51:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:51:30,440 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2024-09-13 02:51:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 02:51:30,441 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2024-09-13 02:51:30,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:51:30,442 INFO L225 Difference]: With dead ends: 141 [2024-09-13 02:51:30,442 INFO L226 Difference]: Without dead ends: 139 [2024-09-13 02:51:30,443 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2024-09-13 02:51:30,443 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 25 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 02:51:30,443 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 337 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 1 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 02:51:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-13 02:51:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-09-13 02:51:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 110 states have internal predecessors, (121), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-13 02:51:30,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2024-09-13 02:51:30,487 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 47 [2024-09-13 02:51:30,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:51:30,488 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2024-09-13 02:51:30,488 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-13 02:51:30,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2024-09-13 02:51:30,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-13 02:51:30,490 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:51:30,490 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:51:30,507 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 02:51:30,694 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:30,695 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:51:30,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:30,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2108223176, now seen corresponding path program 2 times [2024-09-13 02:51:30,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:51:30,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223280439] [2024-09-13 02:51:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:30,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:51:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:30,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:51:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:30,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:51:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:30,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 02:51:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:30,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 02:51:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:30,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 02:51:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:30,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 02:51:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:51:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 02:51:30,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:51:30,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223280439] [2024-09-13 02:51:30,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223280439] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:51:30,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367562751] [2024-09-13 02:51:30,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 02:51:30,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:30,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:51:30,897 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:51:30,898 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 02:51:30,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 02:51:30,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:51:30,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-13 02:51:30,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:51:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:51:30,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:51:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 02:51:31,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367562751] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:51:31,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 02:51:31,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2024-09-13 02:51:31,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842805635] [2024-09-13 02:51:31,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 02:51:31,083 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 02:51:31,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:51:31,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 02:51:31,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-09-13 02:51:31,084 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 13 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2024-09-13 02:51:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:51:31,376 INFO L93 Difference]: Finished difference Result 315 states and 366 transitions. [2024-09-13 02:51:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-13 02:51:31,377 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 13 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) Word has length 57 [2024-09-13 02:51:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:51:31,378 INFO L225 Difference]: With dead ends: 315 [2024-09-13 02:51:31,378 INFO L226 Difference]: Without dead ends: 308 [2024-09-13 02:51:31,379 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 02:51:31,379 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 114 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:51:31,379 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 102 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:51:31,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-09-13 02:51:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 298. [2024-09-13 02:51:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 233 states have (on average 1.1330472103004292) internal successors, (264), 244 states have internal predecessors, (264), 36 states have call successors, (36), 29 states have call predecessors, (36), 28 states have return successors, (34), 24 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-13 02:51:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 334 transitions. [2024-09-13 02:51:31,437 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 334 transitions. Word has length 57 [2024-09-13 02:51:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:51:31,437 INFO L474 AbstractCegarLoop]: Abstraction has 298 states and 334 transitions. [2024-09-13 02:51:31,437 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 13 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2024-09-13 02:51:31,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 334 transitions. [2024-09-13 02:51:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-13 02:51:31,438 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:51:31,439 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:51:31,451 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 02:51:31,642 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:31,643 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:51:31,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:51:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1644319050, now seen corresponding path program 2 times [2024-09-13 02:51:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:51:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164777299] [2024-09-13 02:51:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:51:31,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:51:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:51:31,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225506789] [2024-09-13 02:51:31,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 02:51:31,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:51:31,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:51:31,663 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:51:31,664 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 02:51:31,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 02:51:31,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:51:31,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-13 02:51:31,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:51:33,696 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 59 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 02:51:33,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:51:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 42 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-13 02:51:42,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:51:42,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164777299] [2024-09-13 02:51:42,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:51:42,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225506789] [2024-09-13 02:51:42,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225506789] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:51:42,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:51:42,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13] total 27 [2024-09-13 02:51:42,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639761908] [2024-09-13 02:51:42,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:51:42,346 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-13 02:51:42,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:51:42,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-13 02:51:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2024-09-13 02:51:42,347 INFO L87 Difference]: Start difference. First operand 298 states and 334 transitions. Second operand has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 25 states have internal predecessors, (62), 9 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-13 02:52:14,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-13 02:52:20,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-13 02:52:25,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-13 02:52:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:52:29,269 INFO L93 Difference]: Finished difference Result 424 states and 487 transitions. [2024-09-13 02:52:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-13 02:52:29,270 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 25 states have internal predecessors, (62), 9 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 57 [2024-09-13 02:52:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:52:29,272 INFO L225 Difference]: With dead ends: 424 [2024-09-13 02:52:29,272 INFO L226 Difference]: Without dead ends: 422 [2024-09-13 02:52:29,273 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=287, Invalid=1044, Unknown=1, NotChecked=0, Total=1332 [2024-09-13 02:52:29,273 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 55 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 31 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:52:29,273 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 323 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 449 Invalid, 3 Unknown, 0 Unchecked, 20.0s Time] [2024-09-13 02:52:29,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-09-13 02:52:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 419. [2024-09-13 02:52:29,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 332 states have (on average 1.1355421686746987) internal successors, (377), 343 states have internal predecessors, (377), 51 states have call successors, (51), 36 states have call predecessors, (51), 35 states have return successors, (49), 39 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-13 02:52:29,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 477 transitions. [2024-09-13 02:52:29,381 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 477 transitions. Word has length 57 [2024-09-13 02:52:29,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:52:29,381 INFO L474 AbstractCegarLoop]: Abstraction has 419 states and 477 transitions. [2024-09-13 02:52:29,381 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 25 states have internal predecessors, (62), 9 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-13 02:52:29,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:52:29,382 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 477 transitions. [2024-09-13 02:52:29,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-13 02:52:29,383 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:52:29,383 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:52:29,394 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 02:52:29,586 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:52:29,587 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:52:29,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:52:29,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1819634904, now seen corresponding path program 3 times [2024-09-13 02:52:29,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:52:29,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751922987] [2024-09-13 02:52:29,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:52:29,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:52:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:52:29,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397936621] [2024-09-13 02:52:29,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 02:52:29,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:52:29,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:52:29,635 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:52:29,636 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 02:52:29,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-13 02:52:29,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:52:29,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-13 02:52:29,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:52:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 121 proven. 9 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-09-13 02:52:42,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:52:51,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:52:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751922987] [2024-09-13 02:52:51,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:52:51,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397936621] [2024-09-13 02:52:51,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397936621] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:52:51,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:52:51,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-13 02:52:51,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822973696] [2024-09-13 02:52:51,567 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 02:52:51,567 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 02:52:51,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:52:51,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 02:52:51,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=490, Unknown=1, NotChecked=0, Total=650 [2024-09-13 02:52:51,568 INFO L87 Difference]: Start difference. First operand 419 states and 477 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 02:52:57,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-13 02:53:00,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:53:00,547 INFO L93 Difference]: Finished difference Result 655 states and 753 transitions. [2024-09-13 02:53:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 02:53:00,548 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 77 [2024-09-13 02:53:00,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:53:00,551 INFO L225 Difference]: With dead ends: 655 [2024-09-13 02:53:00,551 INFO L226 Difference]: Without dead ends: 653 [2024-09-13 02:53:00,552 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=242, Invalid=687, Unknown=1, NotChecked=0, Total=930 [2024-09-13 02:53:00,552 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:53:00,552 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 258 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 272 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2024-09-13 02:53:00,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-09-13 02:53:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 209. [2024-09-13 02:53:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 165 states have internal predecessors, (186), 23 states have call successors, (23), 22 states have call predecessors, (23), 21 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-13 02:53:00,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 230 transitions. [2024-09-13 02:53:00,686 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 230 transitions. Word has length 77 [2024-09-13 02:53:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:53:00,687 INFO L474 AbstractCegarLoop]: Abstraction has 209 states and 230 transitions. [2024-09-13 02:53:00,687 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 02:53:00,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:00,687 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 230 transitions. [2024-09-13 02:53:00,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-09-13 02:53:00,688 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:53:00,688 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:53:00,700 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 02:53:00,888 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 02:53:00,889 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:53:00,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1188109524, now seen corresponding path program 2 times [2024-09-13 02:53:00,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:53:00,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173211708] [2024-09-13 02:53:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:53:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:53:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:53:00,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400689730] [2024-09-13 02:53:00,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 02:53:00,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:53:00,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:53:00,926 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:53:00,927 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 02:53:00,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 02:53:00,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:53:00,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-13 02:53:00,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:53:22,047 WARN L249 Executor]: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-09-13 02:53:22,047 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 101 [2024-09-13 02:53:22,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:53:22,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173211708] [2024-09-13 02:53:22,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:53:22,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400689730] [2024-09-13 02:53:22,048 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-09-13 02:53:22,060 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-13 02:53:22,248 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-13 02:53:22,249 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:410) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:327) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:421) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2024-09-13 02:53:22,253 INFO L158 Benchmark]: Toolchain (without parser) took 122612.88ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 139.3MB in the beginning and 75.0MB in the end (delta: 64.3MB). Peak memory consumption was 98.4MB. Max. memory is 16.1GB. [2024-09-13 02:53:22,253 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 125.8MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 02:53:22,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.83ms. Allocated memory is still 167.8MB. Free memory was 139.0MB in the beginning and 131.5MB in the end (delta: 7.6MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2024-09-13 02:53:22,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 13.84ms. Allocated memory is still 167.8MB. Free memory was 131.5MB in the beginning and 130.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 02:53:22,253 INFO L158 Benchmark]: Boogie Preprocessor took 26.34ms. Allocated memory is still 167.8MB. Free memory was 130.0MB in the beginning and 128.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 02:53:22,255 INFO L158 Benchmark]: RCFGBuilder took 243.02ms. Allocated memory is still 167.8MB. Free memory was 128.6MB in the beginning and 115.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 02:53:22,255 INFO L158 Benchmark]: TraceAbstraction took 122148.22ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 115.2MB in the beginning and 75.0MB in the end (delta: 40.2MB). Peak memory consumption was 75.1MB. Max. memory is 16.1GB. [2024-09-13 02:53:22,256 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 125.8MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.83ms. Allocated memory is still 167.8MB. Free memory was 139.0MB in the beginning and 131.5MB in the end (delta: 7.6MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 13.84ms. Allocated memory is still 167.8MB. Free memory was 131.5MB in the beginning and 130.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.34ms. Allocated memory is still 167.8MB. Free memory was 130.0MB in the beginning and 128.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 243.02ms. Allocated memory is still 167.8MB. Free memory was 128.6MB in the beginning and 115.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 122148.22ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 115.2MB in the beginning and 75.0MB in the end (delta: 40.2MB). Peak memory consumption was 75.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/prodbin-ll_unwindbound50.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.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 c54d9189042c7bc9bae976b882c7c0538c4797366038f58e7e5d207abe4f931e --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 02:53:23,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 02:53:23,780 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-13 02:53:23,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 02:53:23,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 02:53:23,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 02:53:23,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 02:53:23,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 02:53:23,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 02:53:23,810 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 02:53:23,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 02:53:23,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 02:53:23,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 02:53:23,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 02:53:23,812 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 02:53:23,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 02:53:23,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 02:53:23,812 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 02:53:23,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 02:53:23,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 02:53:23,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 02:53:23,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 02:53:23,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 02:53:23,814 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-13 02:53:23,814 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-13 02:53:23,814 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 02:53:23,814 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-13 02:53:23,815 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 02:53:23,815 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 02:53:23,815 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 02:53:23,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 02:53:23,816 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 02:53:23,816 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 02:53:23,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 02:53:23,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:53:23,817 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 02:53:23,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 02:53:23,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 02:53:23,817 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-13 02:53:23,817 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-13 02:53:23,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 02:53:23,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 02:53:23,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 02:53:23,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 02:53:23,819 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-13 02:53:23,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c54d9189042c7bc9bae976b882c7c0538c4797366038f58e7e5d207abe4f931e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 02:53:24,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 02:53:24,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 02:53:24,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 02:53:24,091 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 02:53:24,092 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 02:53:24,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c [2024-09-13 02:53:25,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 02:53:25,494 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 02:53:25,494 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c [2024-09-13 02:53:25,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/01557df24/ccde7057902f468db994c143f4566e69/FLAGaa72513e5 [2024-09-13 02:53:25,511 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/01557df24/ccde7057902f468db994c143f4566e69 [2024-09-13 02:53:25,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 02:53:25,528 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 02:53:25,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 02:53:25,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 02:53:25,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 02:53:25,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597564e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25, skipping insertion in model container [2024-09-13 02:53:25,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,554 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 02:53:25,685 WARN L247 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/prodbin-ll_unwindbound50.c[1263,1276] [2024-09-13 02:53:25,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:53:25,718 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 02:53:25,727 WARN L247 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/prodbin-ll_unwindbound50.c[1263,1276] [2024-09-13 02:53:25,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:53:25,749 INFO L204 MainTranslator]: Completed translation [2024-09-13 02:53:25,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25 WrapperNode [2024-09-13 02:53:25,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 02:53:25,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 02:53:25,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 02:53:25,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 02:53:25,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,766 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 02:53:25,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 02:53:25,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 02:53:25,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 02:53:25,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 02:53:25,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,778 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,791 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]. [2024-09-13 02:53:25,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 02:53:25,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 02:53:25,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 02:53:25,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 02:53:25,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (1/1) ... [2024-09-13 02:53:25,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:53:25,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:53:25,836 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) [2024-09-13 02:53:25,838 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 [2024-09-13 02:53:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 02:53:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-13 02:53:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 02:53:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 02:53:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 02:53:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 02:53:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 02:53:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 02:53:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 02:53:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 02:53:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 02:53:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 02:53:25,933 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 02:53:25,936 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 02:53:26,093 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 02:53:26,094 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 02:53:26,121 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 02:53:26,121 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 02:53:26,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:53:26 BoogieIcfgContainer [2024-09-13 02:53:26,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 02:53:26,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 02:53:26,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 02:53:26,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 02:53:26,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 02:53:25" (1/3) ... [2024-09-13 02:53:26,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1109dd44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:53:26, skipping insertion in model container [2024-09-13 02:53:26,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:53:25" (2/3) ... [2024-09-13 02:53:26,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1109dd44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:53:26, skipping insertion in model container [2024-09-13 02:53:26,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:53:26" (3/3) ... [2024-09-13 02:53:26,134 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound50.c [2024-09-13 02:53:26,148 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 02:53:26,148 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 02:53:26,198 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 02:53:26,205 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;@38f1bafc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 02:53:26,205 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 02:53:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 02:53:26,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-13 02:53:26,216 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:53:26,217 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:53:26,217 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:53:26,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1841004279, now seen corresponding path program 1 times [2024-09-13 02:53:26,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 02:53:26,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892704223] [2024-09-13 02:53:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:53:26,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 02:53:26,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 02:53:26,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 02:53:26,238 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-09-13 02:53:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:53:26,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-09-13 02:53:26,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:53:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:53:26,316 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 02:53:26,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 02:53:26,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892704223] [2024-09-13 02:53:26,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892704223] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:53:26,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:53:26,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 02:53:26,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906873183] [2024-09-13 02:53:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:53:26,323 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 02:53:26,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 02:53:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 02:53:26,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 02:53:26,343 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:53:26,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:53:26,369 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2024-09-13 02:53:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 02:53:26,372 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-13 02:53:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:53:26,378 INFO L225 Difference]: With dead ends: 48 [2024-09-13 02:53:26,379 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 02:53:26,381 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 02:53:26,384 INFO L434 NwaCegarLoop]: 29 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, 29 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 [2024-09-13 02:53:26,386 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:53:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 02:53:26,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-13 02:53:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 02:53:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-09-13 02:53:26,417 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2024-09-13 02:53:26,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:53:26,419 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-09-13 02:53:26,419 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:53:26,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-09-13 02:53:26,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-13 02:53:26,421 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:53:26,421 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:53:26,426 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-09-13 02:53:26,622 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 02:53:26,623 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:53:26,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash 233646544, now seen corresponding path program 1 times [2024-09-13 02:53:26,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 02:53:26,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939885501] [2024-09-13 02:53:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:53:26,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 02:53:26,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 02:53:26,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 02:53:26,630 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-09-13 02:53:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:53:26,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 02:53:26,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:53:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:53:26,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 02:53:26,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 02:53:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939885501] [2024-09-13 02:53:26,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939885501] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:53:26,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:53:26,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 02:53:26,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752391673] [2024-09-13 02:53:26,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:53:26,782 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 02:53:26,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 02:53:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 02:53:26,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 02:53:26,785 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 02:53:26,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:53:26,806 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-09-13 02:53:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 02:53:26,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-09-13 02:53:26,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:53:26,807 INFO L225 Difference]: With dead ends: 33 [2024-09-13 02:53:26,807 INFO L226 Difference]: Without dead ends: 26 [2024-09-13 02:53:26,807 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 02:53:26,808 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:53:26,808 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:53:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-13 02:53:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-13 02:53:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 02:53:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-13 02:53:26,817 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2024-09-13 02:53:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:53:26,817 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-13 02:53:26,817 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 02:53:26,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-13 02:53:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-13 02:53:26,820 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:53:26,820 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:53:26,823 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-09-13 02:53:27,020 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 02:53:27,021 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:53:27,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:27,021 INFO L85 PathProgramCache]: Analyzing trace with hash 235434004, now seen corresponding path program 1 times [2024-09-13 02:53:27,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 02:53:27,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646077718] [2024-09-13 02:53:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:53:27,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 02:53:27,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 02:53:27,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 02:53:27,024 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-09-13 02:53:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:53:27,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 02:53:27,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:53:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:53:27,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 02:53:27,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 02:53:27,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646077718] [2024-09-13 02:53:27,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646077718] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:53:27,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:53:27,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:53:27,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110193306] [2024-09-13 02:53:27,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:53:27,355 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:53:27,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 02:53:27,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:53:27,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:53:27,356 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:53:27,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:53:27,605 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-09-13 02:53:27,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:53:27,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-09-13 02:53:27,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:53:27,606 INFO L225 Difference]: With dead ends: 36 [2024-09-13 02:53:27,606 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 02:53:27,606 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 02:53:27,607 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 02:53:27,607 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 02:53:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 02:53:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2024-09-13 02:53:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 02:53:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-09-13 02:53:27,613 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 17 [2024-09-13 02:53:27,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:53:27,613 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-09-13 02:53:27,613 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:53:27,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-09-13 02:53:27,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-13 02:53:27,614 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:53:27,614 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:53:27,620 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-09-13 02:53:27,818 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 02:53:27,819 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:53:27,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1056057055, now seen corresponding path program 1 times [2024-09-13 02:53:27,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 02:53:27,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722720627] [2024-09-13 02:53:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:53:27,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 02:53:27,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 02:53:27,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 02:53:27,822 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-09-13 02:53:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:53:27,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 02:53:27,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:53:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:53:28,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 02:53:28,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 02:53:28,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722720627] [2024-09-13 02:53:28,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722720627] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:53:28,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:53:28,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-13 02:53:28,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506782897] [2024-09-13 02:53:28,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:53:28,006 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 02:53:28,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 02:53:28,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 02:53:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 02:53:28,007 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 02:53:30,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-13 02:53:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:53:30,249 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-09-13 02:53:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 02:53:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-13 02:53:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:53:30,250 INFO L225 Difference]: With dead ends: 41 [2024-09-13 02:53:30,250 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 02:53:30,250 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 02:53:30,251 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-09-13 02:53:30,251 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 85 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2024-09-13 02:53:30,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 02:53:30,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-13 02:53:30,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 02:53:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-13 02:53:30,274 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 23 [2024-09-13 02:53:30,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:53:30,274 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-13 02:53:30,274 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 02:53:30,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:30,274 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-13 02:53:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 02:53:30,275 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:53:30,275 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:53:30,282 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-09-13 02:53:30,476 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 02:53:30,476 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:53:30,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1090652054, now seen corresponding path program 1 times [2024-09-13 02:53:30,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 02:53:30,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787243450] [2024-09-13 02:53:30,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:53:30,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 02:53:30,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 02:53:30,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 02:53:30,479 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-09-13 02:53:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:53:30,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 02:53:30,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:53:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:53:30,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:53:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:53:30,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 02:53:30,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787243450] [2024-09-13 02:53:30,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787243450] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:53:30,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:53:30,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-09-13 02:53:30,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541684187] [2024-09-13 02:53:30,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:53:30,744 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 02:53:30,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 02:53:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 02:53:30,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-13 02:53:30,745 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-13 02:53:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:53:31,487 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2024-09-13 02:53:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 02:53:31,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2024-09-13 02:53:31,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:53:31,489 INFO L225 Difference]: With dead ends: 69 [2024-09-13 02:53:31,489 INFO L226 Difference]: Without dead ends: 62 [2024-09-13 02:53:31,489 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-09-13 02:53:31,490 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-13 02:53:31,490 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 99 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-13 02:53:31,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-13 02:53:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2024-09-13 02:53:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 44 states have internal predecessors, (52), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 02:53:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-09-13 02:53:31,505 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 27 [2024-09-13 02:53:31,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:53:31,506 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-09-13 02:53:31,506 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-13 02:53:31,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:31,506 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-09-13 02:53:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 02:53:31,506 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:53:31,507 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:53:31,517 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-09-13 02:53:31,707 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 02:53:31,709 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:53:31,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:53:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1088864594, now seen corresponding path program 1 times [2024-09-13 02:53:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 02:53:31,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135622992] [2024-09-13 02:53:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:53:31,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 02:53:31,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 02:53:31,710 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 02:53:31,711 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process Killed by 15