./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --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/hard2_valuebound10.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 --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 02:06:44,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 02:06:44,961 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 02:06:44,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 02:06:44,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 02:06:45,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 02:06:45,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 02:06:45,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 02:06:45,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 02:06:45,017 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 02:06:45,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 02:06:45,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 02:06:45,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 02:06:45,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 02:06:45,020 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 02:06:45,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 02:06:45,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 02:06:45,021 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 02:06:45,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 02:06:45,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 02:06:45,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 02:06:45,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 02:06:45,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 02:06:45,026 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 02:06:45,026 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 02:06:45,026 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 02:06:45,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 02:06:45,027 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 02:06:45,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 02:06:45,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 02:06:45,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 02:06:45,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 02:06:45,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:06:45,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 02:06:45,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 02:06:45,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 02:06:45,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 02:06:45,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 02:06:45,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 02:06:45,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 02:06:45,031 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 02:06:45,031 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 02:06:45,031 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 02:06:45,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 02:06:45,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 02:06:45,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 02:06:45,316 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 02:06:45,316 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 02:06:45,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2024-09-13 02:06:46,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 02:06:46,896 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 02:06:46,896 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2024-09-13 02:06:46,907 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/274d52b60/0b8906d27da74fed9d53a079ff6eb1da/FLAG3c99a4787 [2024-09-13 02:06:46,923 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/274d52b60/0b8906d27da74fed9d53a079ff6eb1da [2024-09-13 02:06:46,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 02:06:46,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 02:06:46,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 02:06:46,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 02:06:46,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 02:06:46,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:06:46" (1/1) ... [2024-09-13 02:06:46,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a56913d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:46, skipping insertion in model container [2024-09-13 02:06:46,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:06:46" (1/1) ... [2024-09-13 02:06:46,968 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 02:06:47,086 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/hard2_valuebound10.c[526,539] [2024-09-13 02:06:47,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:06:47,110 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 02:06:47,121 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/hard2_valuebound10.c[526,539] [2024-09-13 02:06:47,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:06:47,143 INFO L204 MainTranslator]: Completed translation [2024-09-13 02:06:47,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47 WrapperNode [2024-09-13 02:06:47,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 02:06:47,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 02:06:47,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 02:06:47,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 02:06:47,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,158 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,164 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 02:06:47,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 02:06:47,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 02:06:47,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 02:06:47,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 02:06:47,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,176 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,193 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-09-13 02:06:47,193 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,208 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 02:06:47,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 02:06:47,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 02:06:47,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 02:06:47,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (1/1) ... [2024-09-13 02:06:47,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:06:47,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:06:47,247 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 02:06:47,251 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 02:06:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 02:06:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 02:06:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 02:06:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 02:06:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 02:06:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 02:06:47,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 02:06:47,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 02:06:47,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 02:06:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 02:06:47,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 02:06:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 02:06:47,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 02:06:47,361 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 02:06:47,363 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 02:06:47,550 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 02:06:47,550 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 02:06:47,577 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 02:06:47,581 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 02:06:47,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:06:47 BoogieIcfgContainer [2024-09-13 02:06:47,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 02:06:47,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 02:06:47,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 02:06:47,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 02:06:47,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 02:06:46" (1/3) ... [2024-09-13 02:06:47,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dea9d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:06:47, skipping insertion in model container [2024-09-13 02:06:47,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:06:47" (2/3) ... [2024-09-13 02:06:47,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dea9d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:06:47, skipping insertion in model container [2024-09-13 02:06:47,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:06:47" (3/3) ... [2024-09-13 02:06:47,591 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound10.c [2024-09-13 02:06:47,603 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 02:06:47,603 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 02:06:47,648 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 02:06:47,655 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;@759a5686, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 02:06:47,655 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 02:06:47,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 02:06:47,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-13 02:06:47,666 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:06:47,667 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:06:47,667 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:06:47,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash -909137831, now seen corresponding path program 1 times [2024-09-13 02:06:47,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:06:47,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74449540] [2024-09-13 02:06:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:47,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:06:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:47,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:06:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:47,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:06:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:47,853 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 02:06:47,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:06:47,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74449540] [2024-09-13 02:06:47,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74449540] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:06:47,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:06:47,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 02:06:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364072471] [2024-09-13 02:06:47,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:06:47,860 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 02:06:47,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:06:47,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 02:06:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 02:06:47,879 INFO L87 Difference]: Start difference. First operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:06:47,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:06:47,912 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2024-09-13 02:06:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 02:06:47,918 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 02:06:47,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:06:47,927 INFO L225 Difference]: With dead ends: 58 [2024-09-13 02:06:47,928 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 02:06:47,933 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 02:06:47,935 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:06:47,936 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:06:47,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 02:06:47,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-13 02:06:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 02:06:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-09-13 02:06:47,975 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2024-09-13 02:06:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:06:47,975 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-09-13 02:06:47,975 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 02:06:47,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:47,976 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-09-13 02:06:47,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-13 02:06:47,977 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:06:47,977 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:06:47,978 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 02:06:47,978 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:06:47,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:47,979 INFO L85 PathProgramCache]: Analyzing trace with hash -229079461, now seen corresponding path program 1 times [2024-09-13 02:06:47,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:06:47,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828291974] [2024-09-13 02:06:47,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:47,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:06:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:48,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:06:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:48,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:06:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:48,160 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 02:06:48,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:06:48,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828291974] [2024-09-13 02:06:48,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828291974] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:06:48,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:06:48,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:06:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501748519] [2024-09-13 02:06:48,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:06:48,166 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:06:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:06:48,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:06:48,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:06:48,170 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:06:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:06:48,251 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-09-13 02:06:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:06:48,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-13 02:06:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:06:48,252 INFO L225 Difference]: With dead ends: 42 [2024-09-13 02:06:48,252 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 02:06:48,253 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 02:06:48,254 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:06:48,254 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:06:48,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 02:06:48,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-09-13 02:06:48,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 02:06:48,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-09-13 02:06:48,269 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2024-09-13 02:06:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:06:48,269 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-09-13 02:06:48,269 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:06:48,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-09-13 02:06:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 02:06:48,270 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:06:48,270 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:06:48,271 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 02:06:48,271 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:06:48,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:48,271 INFO L85 PathProgramCache]: Analyzing trace with hash 520476838, now seen corresponding path program 1 times [2024-09-13 02:06:48,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:06:48,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539870985] [2024-09-13 02:06:48,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:48,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:06:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:48,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:06:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:48,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:06:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:48,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 02:06:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:48,452 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 02:06:48,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:06:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539870985] [2024-09-13 02:06:48,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539870985] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:06:48,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:06:48,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:06:48,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218450955] [2024-09-13 02:06:48,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:06:48,457 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:06:48,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:06:48,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:06:48,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:06:48,459 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 02:06:48,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:06:48,536 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-09-13 02:06:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:06:48,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-13 02:06:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:06:48,538 INFO L225 Difference]: With dead ends: 46 [2024-09-13 02:06:48,538 INFO L226 Difference]: Without dead ends: 44 [2024-09-13 02:06:48,538 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 02:06:48,539 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:06:48,540 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:06:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-13 02:06:48,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-13 02:06:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 02:06:48,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-13 02:06:48,559 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-09-13 02:06:48,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:06:48,560 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-13 02:06:48,560 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 02:06:48,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-13 02:06:48,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-13 02:06:48,561 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:06:48,561 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:06:48,562 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 02:06:48,566 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:06:48,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:48,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1140086011, now seen corresponding path program 1 times [2024-09-13 02:06:48,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:06:48,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826731289] [2024-09-13 02:06:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:48,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:06:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:06:48,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427387975] [2024-09-13 02:06:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:48,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:06:48,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:06:48,600 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 02:06:48,603 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 02:06:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:48,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 02:06:48,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:06:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 02:06:48,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 02:06:48,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:06:48,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826731289] [2024-09-13 02:06:48,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:06:48,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427387975] [2024-09-13 02:06:48,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427387975] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:06:48,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:06:48,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:06:48,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161447543] [2024-09-13 02:06:48,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:06:48,788 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:06:48,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:06:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:06:48,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:06:48,789 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 02:06:48,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:06:48,879 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-09-13 02:06:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:06:48,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-13 02:06:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:06:48,883 INFO L225 Difference]: With dead ends: 63 [2024-09-13 02:06:48,883 INFO L226 Difference]: Without dead ends: 50 [2024-09-13 02:06:48,883 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 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 02:06:48,884 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:06:48,885 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:06:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-13 02:06:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-13 02:06:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-13 02:06:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-09-13 02:06:48,901 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 26 [2024-09-13 02:06:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:06:48,901 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-09-13 02:06:48,901 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 02:06:48,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-09-13 02:06:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-13 02:06:48,903 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:06:48,903 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:06:48,922 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 02:06:49,106 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:06:49,106 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:06:49,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:49,107 INFO L85 PathProgramCache]: Analyzing trace with hash -975701997, now seen corresponding path program 1 times [2024-09-13 02:06:49,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:06:49,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850026169] [2024-09-13 02:06:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:49,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:06:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:06:49,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406677606] [2024-09-13 02:06:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:49,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:06:49,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:06:49,130 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 02:06:49,135 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 02:06:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:49,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 02:06:49,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:06:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 02:06:49,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 02:06:49,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:06:49,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850026169] [2024-09-13 02:06:49,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:06:49,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406677606] [2024-09-13 02:06:49,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406677606] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:06:49,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:06:49,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:06:49,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510600787] [2024-09-13 02:06:49,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:06:49,264 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:06:49,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:06:49,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:06:49,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:06:49,268 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:06:49,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:06:49,344 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-09-13 02:06:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:06:49,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-13 02:06:49,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:06:49,349 INFO L225 Difference]: With dead ends: 63 [2024-09-13 02:06:49,349 INFO L226 Difference]: Without dead ends: 61 [2024-09-13 02:06:49,350 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 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 02:06:49,354 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:06:49,354 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:06:49,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-13 02:06:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-09-13 02:06:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-13 02:06:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-09-13 02:06:49,375 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 33 [2024-09-13 02:06:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:06:49,375 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-09-13 02:06:49,375 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:06:49,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-09-13 02:06:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-13 02:06:49,379 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:06:49,379 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:06:49,395 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 02:06:49,580 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:06:49,580 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:06:49,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:49,581 INFO L85 PathProgramCache]: Analyzing trace with hash -928833564, now seen corresponding path program 1 times [2024-09-13 02:06:49,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:06:49,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167620565] [2024-09-13 02:06:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:49,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:06:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:06:49,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942500973] [2024-09-13 02:06:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:49,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:06:49,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:06:49,615 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 02:06:49,617 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 02:06:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:49,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-13 02:06:49,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:06:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-13 02:06:49,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:06:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-13 02:06:49,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:06:49,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167620565] [2024-09-13 02:06:49,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:06:49,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942500973] [2024-09-13 02:06:49,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942500973] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 02:06:49,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:06:49,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-13 02:06:49,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513621204] [2024-09-13 02:06:49,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:06:49,889 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:06:49,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:06:49,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:06:49,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 02:06:49,890 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:06:49,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:06:49,958 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-09-13 02:06:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:06:49,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-09-13 02:06:49,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:06:49,961 INFO L225 Difference]: With dead ends: 70 [2024-09-13 02:06:49,961 INFO L226 Difference]: Without dead ends: 68 [2024-09-13 02:06:49,962 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-13 02:06:49,962 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:06:49,963 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:06:49,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-13 02:06:49,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-09-13 02:06:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 02:06:49,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-09-13 02:06:49,976 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 43 [2024-09-13 02:06:49,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:06:49,977 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-09-13 02:06:49,977 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:06:49,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:49,977 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-09-13 02:06:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-13 02:06:49,978 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:06:49,978 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:06:49,991 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 02:06:50,179 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 02:06:50,179 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:06:50,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash -238148106, now seen corresponding path program 1 times [2024-09-13 02:06:50,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:06:50,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611046548] [2024-09-13 02:06:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:50,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:06:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:50,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:06:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:50,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:06:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:50,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 02:06:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:50,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 02:06:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:50,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 02:06:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:50,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 02:06:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:50,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-13 02:06:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:50,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 02:06:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 02:06:50,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:06:50,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611046548] [2024-09-13 02:06:50,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611046548] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:06:50,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:06:50,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:06:50,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580336230] [2024-09-13 02:06:50,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:06:50,306 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:06:50,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:06:50,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:06:50,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:06:50,307 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 02:06:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:06:50,366 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-09-13 02:06:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:06:50,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-13 02:06:50,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:06:50,371 INFO L225 Difference]: With dead ends: 75 [2024-09-13 02:06:50,371 INFO L226 Difference]: Without dead ends: 63 [2024-09-13 02:06:50,371 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 02:06:50,372 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:06:50,372 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:06:50,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-13 02:06:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-13 02:06:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-13 02:06:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-09-13 02:06:50,393 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 49 [2024-09-13 02:06:50,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:06:50,393 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-09-13 02:06:50,394 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 02:06:50,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:50,394 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-09-13 02:06:50,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-13 02:06:50,396 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:06:50,396 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:06:50,396 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 02:06:50,396 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:06:50,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:50,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1374799408, now seen corresponding path program 1 times [2024-09-13 02:06:50,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:06:50,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961761278] [2024-09-13 02:06:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:50,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:06:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:06:50,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686110880] [2024-09-13 02:06:50,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:50,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:06:50,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:06:50,444 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 02:06:50,446 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 02:06:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:50,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-13 02:06:50,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:06:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-13 02:06:50,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:06:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-13 02:06:52,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:06:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961761278] [2024-09-13 02:06:52,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:06:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686110880] [2024-09-13 02:06:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686110880] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:06:52,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:06:52,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-13 02:06:52,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398632015] [2024-09-13 02:06:52,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:06:52,152 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 02:06:52,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:06:52,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 02:06:52,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-13 02:06:52,153 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-13 02:06:52,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:06:52,757 INFO L93 Difference]: Finished difference Result 138 states and 183 transitions. [2024-09-13 02:06:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 02:06:52,758 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2024-09-13 02:06:52,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:06:52,760 INFO L225 Difference]: With dead ends: 138 [2024-09-13 02:06:52,760 INFO L226 Difference]: Without dead ends: 115 [2024-09-13 02:06:52,761 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-13 02:06:52,762 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 02:06:52,762 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 225 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 02:06:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-13 02:06:52,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-13 02:06:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-13 02:06:52,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-09-13 02:06:52,796 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 63 [2024-09-13 02:06:52,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:06:52,797 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-09-13 02:06:52,797 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-13 02:06:52,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:52,798 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-09-13 02:06:52,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-13 02:06:52,799 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:06:52,799 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:06:52,819 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 02:06:53,003 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:06:53,004 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:06:53,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:53,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2048390162, now seen corresponding path program 1 times [2024-09-13 02:06:53,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:06:53,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558640862] [2024-09-13 02:06:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:53,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:06:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:06:53,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956584230] [2024-09-13 02:06:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:53,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:06:53,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:06:53,040 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 02:06:53,047 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 02:06:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:53,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-13 02:06:53,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:06:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-13 02:06:53,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:06:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-13 02:06:53,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:06:53,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558640862] [2024-09-13 02:06:53,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:06:53,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956584230] [2024-09-13 02:06:53,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956584230] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:06:53,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:06:53,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-13 02:06:53,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528924119] [2024-09-13 02:06:53,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:06:53,830 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 02:06:53,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:06:53,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 02:06:53,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-13 02:06:53,832 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-13 02:06:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:06:54,526 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2024-09-13 02:06:54,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 02:06:54,527 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-09-13 02:06:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:06:54,529 INFO L225 Difference]: With dead ends: 168 [2024-09-13 02:06:54,529 INFO L226 Difference]: Without dead ends: 136 [2024-09-13 02:06:54,530 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-09-13 02:06:54,530 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 02:06:54,530 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 195 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 02:06:54,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-13 02:06:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2024-09-13 02:06:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 70 states have internal predecessors, (76), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-13 02:06:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-09-13 02:06:54,560 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 74 [2024-09-13 02:06:54,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:06:54,560 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-09-13 02:06:54,561 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-13 02:06:54,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:54,561 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-09-13 02:06:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-13 02:06:54,562 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:06:54,563 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:06:54,582 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 02:06:54,766 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:06:54,767 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:06:54,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1556827571, now seen corresponding path program 1 times [2024-09-13 02:06:54,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:06:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632922788] [2024-09-13 02:06:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:54,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:06:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:06:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:06:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 02:06:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 02:06:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 02:06:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 02:06:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-13 02:06:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-13 02:06:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 02:06:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 02:06:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-13 02:06:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 02:06:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-13 02:06:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-13 02:06:55,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:06:55,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632922788] [2024-09-13 02:06:55,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632922788] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:06:55,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262422319] [2024-09-13 02:06:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:55,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:06:55,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:06:55,101 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 02:06:55,107 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 02:06:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:06:55,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 02:06:55,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:06:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-13 02:06:55,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:06:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-13 02:06:55,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262422319] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:06:55,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 02:06:55,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-13 02:06:55,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279764749] [2024-09-13 02:06:55,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 02:06:55,672 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 02:06:55,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:06:55,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 02:06:55,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-13 02:06:55,674 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-13 02:06:55,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:06:55,866 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2024-09-13 02:06:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 02:06:55,867 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 79 [2024-09-13 02:06:55,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:06:55,868 INFO L225 Difference]: With dead ends: 129 [2024-09-13 02:06:55,868 INFO L226 Difference]: Without dead ends: 100 [2024-09-13 02:06:55,869 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-13 02:06:55,869 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:06:55,870 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 225 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:06:55,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-13 02:06:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-09-13 02:06:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 63 states have internal predecessors, (67), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-13 02:06:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2024-09-13 02:06:55,912 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 79 [2024-09-13 02:06:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:06:55,912 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2024-09-13 02:06:55,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-13 02:06:55,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2024-09-13 02:06:55,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-13 02:06:55,917 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:06:55,918 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:06:55,934 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 02:06:56,118 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 02:06:56,118 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:06:56,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:06:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash -802122381, now seen corresponding path program 2 times [2024-09-13 02:06:56,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:06:56,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441595291] [2024-09-13 02:06:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:06:56,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:06:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:06:56,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334301724] [2024-09-13 02:06:56,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 02:06:56,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:06:56,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:06:56,161 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 02:06:56,162 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 02:06:56,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 02:06:56,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:06:56,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-13 02:06:56,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:06:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-13 02:06:56,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:07:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-13 02:07:12,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:07:12,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441595291] [2024-09-13 02:07:12,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:07:12,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334301724] [2024-09-13 02:07:12,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334301724] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:07:12,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:07:12,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-09-13 02:07:12,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423556472] [2024-09-13 02:07:12,682 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:07:12,682 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-13 02:07:12,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:07:12,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-13 02:07:12,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-09-13 02:07:12,683 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-13 02:07:23,283 WARN L293 SmtUtils]: Spent 10.07s on a formula simplification. DAG size of input: 171 DAG size of output: 83 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 02:07:24,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:07:26,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:07:29,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:07:31,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:07:32,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:07:44,395 WARN L293 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 156 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 02:07:46,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:07:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:07:46,831 INFO L93 Difference]: Finished difference Result 205 states and 268 transitions. [2024-09-13 02:07:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-13 02:07:46,832 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 93 [2024-09-13 02:07:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:07:46,834 INFO L225 Difference]: With dead ends: 205 [2024-09-13 02:07:46,834 INFO L226 Difference]: Without dead ends: 172 [2024-09-13 02:07:46,834 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2024-09-13 02:07:46,835 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 66 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2024-09-13 02:07:46,835 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 513 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2024-09-13 02:07:46,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-13 02:07:46,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2024-09-13 02:07:46,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 107 states have internal predecessors, (117), 52 states have call successors, (52), 17 states have call predecessors, (52), 16 states have return successors, (50), 43 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-13 02:07:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 219 transitions. [2024-09-13 02:07:46,897 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 219 transitions. Word has length 93 [2024-09-13 02:07:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:07:46,898 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 219 transitions. [2024-09-13 02:07:46,898 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-13 02:07:46,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:07:46,898 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 219 transitions. [2024-09-13 02:07:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-13 02:07:46,900 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:07:46,900 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:07:46,916 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 02:07:47,100 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:07:47,101 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:07:47,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:07:47,101 INFO L85 PathProgramCache]: Analyzing trace with hash 644553835, now seen corresponding path program 2 times [2024-09-13 02:07:47,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:07:47,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034966203] [2024-09-13 02:07:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:07:47,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:07:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:07:47,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951239397] [2024-09-13 02:07:47,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 02:07:47,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:07:47,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:07:47,146 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 02:07:47,147 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 02:07:47,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 02:07:47,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:07:47,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-13 02:07:47,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:07:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-13 02:07:47,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:07:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-13 02:07:49,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:07:49,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034966203] [2024-09-13 02:07:49,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:07:49,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951239397] [2024-09-13 02:07:49,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951239397] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:07:49,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:07:49,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-09-13 02:07:49,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813066077] [2024-09-13 02:07:49,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:07:49,922 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-13 02:07:49,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:07:49,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-13 02:07:49,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2024-09-13 02:07:49,924 INFO L87 Difference]: Start difference. First operand 168 states and 219 transitions. Second operand has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-13 02:07:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:07:53,197 INFO L93 Difference]: Finished difference Result 238 states and 312 transitions. [2024-09-13 02:07:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-13 02:07:53,197 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) Word has length 104 [2024-09-13 02:07:53,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:07:53,199 INFO L225 Difference]: With dead ends: 238 [2024-09-13 02:07:53,199 INFO L226 Difference]: Without dead ends: 175 [2024-09-13 02:07:53,200 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 02:07:53,200 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-13 02:07:53,201 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 575 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-13 02:07:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-09-13 02:07:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 151. [2024-09-13 02:07:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 97 states have internal predecessors, (102), 43 states have call successors, (43), 18 states have call predecessors, (43), 17 states have return successors, (41), 35 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-13 02:07:53,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 186 transitions. [2024-09-13 02:07:53,261 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 186 transitions. Word has length 104 [2024-09-13 02:07:53,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:07:53,262 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 186 transitions. [2024-09-13 02:07:53,262 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-13 02:07:53,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:07:53,263 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 186 transitions. [2024-09-13 02:07:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-13 02:07:53,264 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:07:53,264 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:07:53,277 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 02:07:53,468 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:07:53,469 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:07:53,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:07:53,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1191181482, now seen corresponding path program 2 times [2024-09-13 02:07:53,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:07:53,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141767924] [2024-09-13 02:07:53,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:07:53,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:07:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:07:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:07:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 02:07:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 02:07:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 02:07:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 02:07:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-13 02:07:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-13 02:07:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 02:07:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 02:07:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 02:07:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-13 02:07:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-13 02:07:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-13 02:07:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-13 02:07:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-13 02:07:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-13 02:07:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-13 02:07:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-13 02:07:53,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:07:53,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141767924] [2024-09-13 02:07:53,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141767924] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:07:53,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243557981] [2024-09-13 02:07:53,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 02:07:53,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:07:53,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:07:53,917 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 02:07:53,918 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 02:07:53,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 02:07:53,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:07:53,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-13 02:07:53,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:07:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-13 02:07:54,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:07:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-13 02:07:55,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243557981] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:07:55,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 02:07:55,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 25 [2024-09-13 02:07:55,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069097749] [2024-09-13 02:07:55,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 02:07:55,301 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 02:07:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:07:55,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 02:07:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-13 02:07:55,302 INFO L87 Difference]: Start difference. First operand 151 states and 186 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-13 02:07:55,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:07:55,706 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2024-09-13 02:07:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 02:07:55,706 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) Word has length 109 [2024-09-13 02:07:55,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:07:55,708 INFO L225 Difference]: With dead ends: 171 [2024-09-13 02:07:55,708 INFO L226 Difference]: Without dead ends: 129 [2024-09-13 02:07:55,708 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2024-09-13 02:07:55,710 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 19 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 02:07:55,710 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 407 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 02:07:55,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-13 02:07:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-09-13 02:07:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 83 states have internal predecessors, (86), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-13 02:07:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2024-09-13 02:07:55,756 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 109 [2024-09-13 02:07:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:07:55,757 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2024-09-13 02:07:55,757 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-13 02:07:55,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:07:55,757 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2024-09-13 02:07:55,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-13 02:07:55,758 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:07:55,758 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:07:55,775 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 02:07:55,959 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-13 02:07:55,959 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:07:55,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:07:55,960 INFO L85 PathProgramCache]: Analyzing trace with hash -626389098, now seen corresponding path program 1 times [2024-09-13 02:07:55,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:07:55,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112843240] [2024-09-13 02:07:55,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:07:55,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:07:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:07:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:07:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 02:07:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 02:07:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 02:07:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 02:07:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-13 02:07:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-13 02:07:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 02:07:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 02:07:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 02:07:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-13 02:07:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-13 02:07:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-13 02:07:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-13 02:07:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-13 02:07:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-13 02:07:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-13 02:07:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-13 02:07:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-13 02:07:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-13 02:07:56,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:07:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112843240] [2024-09-13 02:07:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112843240] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:07:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518647543] [2024-09-13 02:07:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:07:56,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:07:56,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:07:56,202 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 02:07:56,203 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 02:07:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:07:56,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 02:07:56,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:07:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-13 02:07:56,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:07:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-13 02:07:56,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518647543] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:07:56,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 02:07:56,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 9 [2024-09-13 02:07:56,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931664601] [2024-09-13 02:07:56,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 02:07:56,491 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-13 02:07:56,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:07:56,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-13 02:07:56,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-13 02:07:56,492 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-13 02:07:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:07:56,625 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2024-09-13 02:07:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 02:07:56,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 121 [2024-09-13 02:07:56,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:07:56,628 INFO L225 Difference]: With dead ends: 138 [2024-09-13 02:07:56,628 INFO L226 Difference]: Without dead ends: 131 [2024-09-13 02:07:56,628 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-13 02:07:56,629 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:07:56,629 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 152 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:07:56,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-13 02:07:56,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2024-09-13 02:07:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 77 states have (on average 1.103896103896104) internal successors, (85), 81 states have internal predecessors, (85), 32 states have call successors, (32), 17 states have call predecessors, (32), 16 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-13 02:07:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2024-09-13 02:07:56,687 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 121 [2024-09-13 02:07:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:07:56,687 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2024-09-13 02:07:56,687 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-13 02:07:56,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:07:56,688 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2024-09-13 02:07:56,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-13 02:07:56,689 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:07:56,689 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:07:56,706 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 02:07:56,889 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-13 02:07:56,890 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:07:56,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:07:56,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1692740848, now seen corresponding path program 3 times [2024-09-13 02:07:56,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:07:56,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321628442] [2024-09-13 02:07:56,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:07:56,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:07:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:07:56,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123430686] [2024-09-13 02:07:56,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 02:07:56,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:07:56,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:07:56,920 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:07:56,924 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 02:07:56,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 02:07:56,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:07:56,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-13 02:07:56,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:07:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 156 proven. 44 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2024-09-13 02:07:57,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:07:58,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:07:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321628442] [2024-09-13 02:07:58,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:07:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123430686] [2024-09-13 02:07:58,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123430686] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:07:58,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:07:58,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-13 02:07:58,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218601630] [2024-09-13 02:07:58,602 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 02:07:58,602 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 02:07:58,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:07:58,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 02:07:58,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-09-13 02:07:58,603 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-13 02:07:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:07:58,753 INFO L93 Difference]: Finished difference Result 132 states and 152 transitions. [2024-09-13 02:07:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 02:07:58,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2024-09-13 02:07:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:07:58,755 INFO L225 Difference]: With dead ends: 132 [2024-09-13 02:07:58,755 INFO L226 Difference]: Without dead ends: 128 [2024-09-13 02:07:58,755 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-09-13 02:07:58,756 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:07:58,756 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 130 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:07:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-13 02:07:58,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-13 02:07:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 82 states have internal predecessors, (86), 32 states have call successors, (32), 18 states have call predecessors, (32), 16 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-13 02:07:58,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2024-09-13 02:07:58,825 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 123 [2024-09-13 02:07:58,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:07:58,825 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2024-09-13 02:07:58,825 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-13 02:07:58,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:07:58,825 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2024-09-13 02:07:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-13 02:07:58,828 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:07:58,829 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:07:58,845 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-13 02:07:59,032 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-13 02:07:59,033 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:07:59,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:07:59,033 INFO L85 PathProgramCache]: Analyzing trace with hash -478157618, now seen corresponding path program 3 times [2024-09-13 02:07:59,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:07:59,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278983754] [2024-09-13 02:07:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:07:59,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:07:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:07:59,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195229332] [2024-09-13 02:07:59,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 02:07:59,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:07:59,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:07:59,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:07:59,071 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 02:07:59,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 02:07:59,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:07:59,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-13 02:07:59,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:07:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 163 proven. 53 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2024-09-13 02:07:59,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:07:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-13 02:07:59,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:07:59,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278983754] [2024-09-13 02:07:59,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:07:59,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195229332] [2024-09-13 02:07:59,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195229332] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:07:59,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:07:59,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-09-13 02:07:59,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440699727] [2024-09-13 02:07:59,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:07:59,443 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 02:07:59,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:07:59,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 02:07:59,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-09-13 02:07:59,444 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-13 02:07:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:07:59,686 INFO L93 Difference]: Finished difference Result 128 states and 148 transitions. [2024-09-13 02:07:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 02:07:59,686 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) Word has length 134 [2024-09-13 02:07:59,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:07:59,688 INFO L225 Difference]: With dead ends: 128 [2024-09-13 02:07:59,689 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 02:07:59,689 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-09-13 02:07:59,690 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 47 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:07:59,690 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 181 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:07:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 02:07:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 02:07:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 02:07:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 02:07:59,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-13 02:07:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:07:59,691 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 02:07:59,691 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-13 02:07:59,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:07:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 02:07:59,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 02:07:59,694 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 02:07:59,711 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-13 02:07:59,895 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-13 02:07:59,898 INFO L408 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:07:59,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 02:08:02,372 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 02:08:02,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 02:08:02 BoogieIcfgContainer [2024-09-13 02:08:02,386 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 02:08:02,387 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 02:08:02,387 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 02:08:02,387 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 02:08:02,388 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:06:47" (3/4) ... [2024-09-13 02:08:02,389 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 02:08:02,392 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 02:08:02,392 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 02:08:02,392 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 02:08:02,393 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 02:08:02,396 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-09-13 02:08:02,396 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-09-13 02:08:02,396 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-13 02:08:02,396 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 02:08:02,397 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 02:08:02,481 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 02:08:02,482 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 02:08:02,482 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 02:08:02,482 INFO L158 Benchmark]: Toolchain (without parser) took 75554.96ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 145.4MB in the beginning and 115.8MB in the end (delta: 29.6MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2024-09-13 02:08:02,482 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 178.3MB. Free memory was 147.2MB in the beginning and 147.0MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 02:08:02,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.69ms. Allocated memory is still 178.3MB. Free memory was 145.2MB in the beginning and 139.3MB in the end (delta: 5.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2024-09-13 02:08:02,483 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.50ms. Allocated memory is still 178.3MB. Free memory was 138.5MB in the beginning and 138.1MB in the end (delta: 375.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 02:08:02,483 INFO L158 Benchmark]: Boogie Preprocessor took 44.69ms. Allocated memory is still 178.3MB. Free memory was 138.1MB in the beginning and 136.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 02:08:02,484 INFO L158 Benchmark]: RCFGBuilder took 371.76ms. Allocated memory is still 178.3MB. Free memory was 136.3MB in the beginning and 142.9MB in the end (delta: -6.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 02:08:02,484 INFO L158 Benchmark]: TraceAbstraction took 74800.98ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 141.9MB in the beginning and 121.0MB in the end (delta: 20.9MB). Peak memory consumption was 127.3MB. Max. memory is 16.1GB. [2024-09-13 02:08:02,484 INFO L158 Benchmark]: Witness Printer took 94.83ms. Allocated memory is still 213.9MB. Free memory was 121.0MB in the beginning and 115.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 02:08:02,485 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 178.3MB. Free memory was 147.2MB in the beginning and 147.0MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.69ms. Allocated memory is still 178.3MB. Free memory was 145.2MB in the beginning and 139.3MB in the end (delta: 5.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.50ms. Allocated memory is still 178.3MB. Free memory was 138.5MB in the beginning and 138.1MB in the end (delta: 375.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.69ms. Allocated memory is still 178.3MB. Free memory was 138.1MB in the beginning and 136.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 371.76ms. Allocated memory is still 178.3MB. Free memory was 136.3MB in the beginning and 142.9MB in the end (delta: -6.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 74800.98ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 141.9MB in the beginning and 121.0MB in the end (delta: 20.9MB). Peak memory consumption was 127.3MB. Max. memory is 16.1GB. * Witness Printer took 94.83ms. Allocated memory is still 213.9MB. Free memory was 121.0MB in the beginning and 115.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.3s, OverallIterations: 16, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 40.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 332 SdHoareTripleChecker+Valid, 15.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 283 mSDsluCounter, 3304 SdHoareTripleChecker+Invalid, 14.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2763 mSDsCounter, 411 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2692 IncrementalHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 411 mSolverCounterUnsat, 541 mSDtfsCounter, 2692 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2032 GetRequests, 1824 SyntacticMatches, 10 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 30.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=11, InterpolantAutomatonStates: 152, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 77 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 27.4s InterpolantComputationTime, 2106 NumberOfCodeBlocks, 1979 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 2205 ConstructedInterpolants, 0 QuantifiedInterpolants, 21011 SizeOfPredicates, 29 NumberOfNonLiveVariables, 2233 ConjunctsInSsa, 322 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 8805/9435 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((A == (q + r)) && (d == p)) && (1 <= p)) && (B == 1)) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((A == r) && ((A + d) == (p + r))) && (8 <= p)) && (q == 0)) && (B == 1))) || ((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-13 02:08:02,559 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE