./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c --full-output --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 a9b967e5 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/loops-crafted-1/nested_delay_nd.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 39463d01f5c85d47bf5e231172595e96b8ff556c59c4a9ab8cf46a88a393b05c --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-a9b967e-m [2024-09-11 19:32:58,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:32:58,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:32:59,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:32:59,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:32:59,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:32:59,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:32:59,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:32:59,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:32:59,020 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:32:59,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:32:59,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:32:59,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:32:59,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:32:59,022 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:32:59,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:32:59,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:32:59,025 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:32:59,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:32:59,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:32:59,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:32:59,027 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:32:59,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:32:59,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:32:59,028 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:32:59,028 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:32:59,028 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:32:59,028 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:32:59,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:32:59,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:32:59,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:32:59,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:32:59,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:32:59,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:32:59,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:32:59,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:32:59,030 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:32:59,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:32:59,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:32:59,031 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:32:59,031 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:32:59,031 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:32:59,031 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39463d01f5c85d47bf5e231172595e96b8ff556c59c4a9ab8cf46a88a393b05c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:32:59,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:32:59,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:32:59,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:32:59,299 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:32:59,300 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:32:59,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c [2024-09-11 19:33:00,772 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:33:00,949 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:33:00,950 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c [2024-09-11 19:33:00,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/cc32036ae/7c6136326897486197c629c7a6843029/FLAG232a347bf [2024-09-11 19:33:01,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/cc32036ae/7c6136326897486197c629c7a6843029 [2024-09-11 19:33:01,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:33:01,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:33:01,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:33:01,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:33:01,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:33:01,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e49eec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01, skipping insertion in model container [2024-09-11 19:33:01,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,389 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:33:01,549 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/loops-crafted-1/nested_delay_nd.c[465,478] [2024-09-11 19:33:01,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:33:01,577 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:33:01,591 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/loops-crafted-1/nested_delay_nd.c[465,478] [2024-09-11 19:33:01,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:33:01,617 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:33:01,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01 WrapperNode [2024-09-11 19:33:01,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:33:01,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:33:01,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:33:01,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:33:01,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,645 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-09-11 19:33:01,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:33:01,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:33:01,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:33:01,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:33:01,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,668 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-11 19:33:01,669 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,669 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,673 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,686 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:33:01,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:33:01,687 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:33:01,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:33:01,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (1/1) ... [2024-09-11 19:33:01,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:33:01,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:33:01,719 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) [2024-09-11 19:33:01,723 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 [2024-09-11 19:33:01,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:33:01,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:33:01,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:33:01,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:33:01,837 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:33:01,842 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:33:02,011 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-11 19:33:02,011 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:33:02,047 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:33:02,049 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-11 19:33:02,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:33:02 BoogieIcfgContainer [2024-09-11 19:33:02,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:33:02,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:33:02,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:33:02,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:33:02,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:33:01" (1/3) ... [2024-09-11 19:33:02,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f001de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:33:02, skipping insertion in model container [2024-09-11 19:33:02,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:33:01" (2/3) ... [2024-09-11 19:33:02,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f001de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:33:02, skipping insertion in model container [2024-09-11 19:33:02,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:33:02" (3/3) ... [2024-09-11 19:33:02,061 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_delay_nd.c [2024-09-11 19:33:02,077 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:33:02,077 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:33:02,144 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:33:02,153 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;@22b3150f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:33:02,153 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:33:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 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) [2024-09-11 19:33:02,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 19:33:02,163 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:02,166 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:02,166 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:02,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:02,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1500602288, now seen corresponding path program 1 times [2024-09-11 19:33:02,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:02,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162016362] [2024-09-11 19:33:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:02,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:02,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:02,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162016362] [2024-09-11 19:33:02,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162016362] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:33:02,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:33:02,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:33:02,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276088061] [2024-09-11 19:33:02,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:33:02,355 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-11 19:33:02,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:02,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-11 19:33:02,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:33:02,380 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-09-11 19:33:02,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:02,399 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2024-09-11 19:33:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-11 19:33:02,401 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2024-09-11 19:33:02,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:02,408 INFO L225 Difference]: With dead ends: 32 [2024-09-11 19:33:02,408 INFO L226 Difference]: Without dead ends: 16 [2024-09-11 19:33:02,411 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:33:02,417 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:02,418 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:33:02,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-11 19:33:02,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-11 19:33:02,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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) [2024-09-11 19:33:02,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2024-09-11 19:33:02,444 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 11 [2024-09-11 19:33:02,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:02,444 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2024-09-11 19:33:02,444 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-09-11 19:33:02,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:02,445 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2024-09-11 19:33:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 19:33:02,446 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:02,446 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:02,446 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:33:02,447 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:02,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:02,447 INFO L85 PathProgramCache]: Analyzing trace with hash -65030621, now seen corresponding path program 1 times [2024-09-11 19:33:02,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:02,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237742026] [2024-09-11 19:33:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:02,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:02,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237742026] [2024-09-11 19:33:02,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237742026] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:33:02,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:33:02,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:33:02,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700048289] [2024-09-11 19:33:02,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:33:02,650 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:33:02,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:02,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:33:02,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:33:02,654 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-09-11 19:33:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:02,726 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2024-09-11 19:33:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:33:02,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 11 [2024-09-11 19:33:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:02,727 INFO L225 Difference]: With dead ends: 32 [2024-09-11 19:33:02,727 INFO L226 Difference]: Without dead ends: 19 [2024-09-11 19:33:02,728 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:33:02,729 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:02,729 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 17 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:33:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-09-11 19:33:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2024-09-11 19:33:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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) [2024-09-11 19:33:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2024-09-11 19:33:02,738 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 11 [2024-09-11 19:33:02,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:02,738 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2024-09-11 19:33:02,739 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-09-11 19:33:02,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2024-09-11 19:33:02,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-11 19:33:02,741 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:02,741 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:02,741 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:33:02,741 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:02,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:02,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1812390471, now seen corresponding path program 1 times [2024-09-11 19:33:02,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:02,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967845128] [2024-09-11 19:33:02,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:33:02,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:02,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967845128] [2024-09-11 19:33:02,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967845128] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:33:02,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:33:02,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:33:02,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607396677] [2024-09-11 19:33:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:33:02,840 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:33:02,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:02,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:33:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:33:02,843 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-09-11 19:33:02,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:02,889 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2024-09-11 19:33:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:33:02,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 14 [2024-09-11 19:33:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:02,890 INFO L225 Difference]: With dead ends: 35 [2024-09-11 19:33:02,890 INFO L226 Difference]: Without dead ends: 21 [2024-09-11 19:33:02,891 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:33:02,892 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:02,892 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:33:02,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-11 19:33:02,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2024-09-11 19:33:02,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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) [2024-09-11 19:33:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2024-09-11 19:33:02,898 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 14 [2024-09-11 19:33:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:02,899 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2024-09-11 19:33:02,899 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-09-11 19:33:02,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2024-09-11 19:33:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-11 19:33:02,900 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:02,900 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:02,900 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-11 19:33:02,901 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:02,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:02,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1869648773, now seen corresponding path program 1 times [2024-09-11 19:33:02,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:02,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901505531] [2024-09-11 19:33:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:02,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:33:03,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:03,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901505531] [2024-09-11 19:33:03,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901505531] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:33:03,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:33:03,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:33:03,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033626046] [2024-09-11 19:33:03,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:33:03,063 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:33:03,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:03,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:33:03,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:33:03,065 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-09-11 19:33:03,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:03,110 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-11 19:33:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:33:03,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 14 [2024-09-11 19:33:03,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:03,114 INFO L225 Difference]: With dead ends: 48 [2024-09-11 19:33:03,114 INFO L226 Difference]: Without dead ends: 33 [2024-09-11 19:33:03,115 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:33:03,117 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 40 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:03,117 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 27 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:33:03,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-11 19:33:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-09-11 19:33:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 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) [2024-09-11 19:33:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2024-09-11 19:33:03,134 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 14 [2024-09-11 19:33:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:03,135 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2024-09-11 19:33:03,135 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-09-11 19:33:03,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2024-09-11 19:33:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-11 19:33:03,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:03,136 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:03,136 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-11 19:33:03,136 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:03,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:03,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1869708355, now seen corresponding path program 1 times [2024-09-11 19:33:03,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:03,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669850730] [2024-09-11 19:33:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:03,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669850730] [2024-09-11 19:33:03,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669850730] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:33:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831183764] [2024-09-11 19:33:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:03,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:03,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:33:03,240 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) [2024-09-11 19:33:03,253 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 19:33:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:03,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 19:33:03,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:33:03,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:03,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:33:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:03,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831183764] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:33:03,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:33:03,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-09-11 19:33:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364806237] [2024-09-11 19:33:03,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:33:03,457 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-11 19:33:03,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-11 19:33:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:33:03,459 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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) [2024-09-11 19:33:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:03,562 INFO L93 Difference]: Finished difference Result 77 states and 113 transitions. [2024-09-11 19:33:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:33:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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) Word has length 14 [2024-09-11 19:33:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:03,563 INFO L225 Difference]: With dead ends: 77 [2024-09-11 19:33:03,564 INFO L226 Difference]: Without dead ends: 49 [2024-09-11 19:33:03,565 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:33:03,566 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:03,566 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 29 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:33:03,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-11 19:33:03,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-09-11 19:33:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 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) [2024-09-11 19:33:03,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2024-09-11 19:33:03,587 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 14 [2024-09-11 19:33:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:03,588 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2024-09-11 19:33:03,588 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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) [2024-09-11 19:33:03,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:03,588 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2024-09-11 19:33:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 19:33:03,589 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:03,589 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:03,607 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-11 19:33:03,790 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:03,790 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:03,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:03,791 INFO L85 PathProgramCache]: Analyzing trace with hash -584062177, now seen corresponding path program 2 times [2024-09-11 19:33:03,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:03,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558828791] [2024-09-11 19:33:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:03,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:03,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558828791] [2024-09-11 19:33:03,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558828791] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:33:03,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66215693] [2024-09-11 19:33:03,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:33:03,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:03,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:33:03,936 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) [2024-09-11 19:33:03,938 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 19:33:03,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:33:03,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:33:03,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-11 19:33:03,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:33:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:33:04,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:33:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:33:04,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66215693] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:33:04,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:33:04,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2024-09-11 19:33:04,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669574299] [2024-09-11 19:33:04,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:33:04,238 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-11 19:33:04,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:04,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-11 19:33:04,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:33:04,239 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 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) [2024-09-11 19:33:04,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:04,738 INFO L93 Difference]: Finished difference Result 198 states and 282 transitions. [2024-09-11 19:33:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 19:33:04,739 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 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) Word has length 23 [2024-09-11 19:33:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:04,740 INFO L225 Difference]: With dead ends: 198 [2024-09-11 19:33:04,740 INFO L226 Difference]: Without dead ends: 152 [2024-09-11 19:33:04,741 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=951, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:33:04,742 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 166 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:04,742 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 85 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:33:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-11 19:33:04,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 141. [2024-09-11 19:33:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2785714285714285) internal successors, (179), 140 states have internal predecessors, (179), 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) [2024-09-11 19:33:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 179 transitions. [2024-09-11 19:33:04,778 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 179 transitions. Word has length 23 [2024-09-11 19:33:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:04,778 INFO L474 AbstractCegarLoop]: Abstraction has 141 states and 179 transitions. [2024-09-11 19:33:04,778 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 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) [2024-09-11 19:33:04,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 179 transitions. [2024-09-11 19:33:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:33:04,783 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:04,783 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:04,799 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-11 19:33:04,983 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-11 19:33:04,984 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:04,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:04,984 INFO L85 PathProgramCache]: Analyzing trace with hash -268676385, now seen corresponding path program 1 times [2024-09-11 19:33:04,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:04,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608070619] [2024-09-11 19:33:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:04,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-11 19:33:05,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:05,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608070619] [2024-09-11 19:33:05,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608070619] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:33:05,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:33:05,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:33:05,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778843759] [2024-09-11 19:33:05,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:33:05,037 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:33:05,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:05,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:33:05,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:33:05,038 INFO L87 Difference]: Start difference. First operand 141 states and 179 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-09-11 19:33:05,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:05,096 INFO L93 Difference]: Finished difference Result 312 states and 402 transitions. [2024-09-11 19:33:05,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:33:05,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 29 [2024-09-11 19:33:05,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:05,100 INFO L225 Difference]: With dead ends: 312 [2024-09-11 19:33:05,100 INFO L226 Difference]: Without dead ends: 174 [2024-09-11 19:33:05,101 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:33:05,101 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:05,102 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:33:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-09-11 19:33:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 143. [2024-09-11 19:33:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.267605633802817) internal successors, (180), 142 states have internal predecessors, (180), 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) [2024-09-11 19:33:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 180 transitions. [2024-09-11 19:33:05,176 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 180 transitions. Word has length 29 [2024-09-11 19:33:05,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:05,176 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 180 transitions. [2024-09-11 19:33:05,177 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-09-11 19:33:05,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 180 transitions. [2024-09-11 19:33:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 19:33:05,178 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:05,178 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:05,179 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-11 19:33:05,179 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:05,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash -653810757, now seen corresponding path program 1 times [2024-09-11 19:33:05,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:05,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285701526] [2024-09-11 19:33:05,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:05,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-11 19:33:05,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:05,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285701526] [2024-09-11 19:33:05,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285701526] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:33:05,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:33:05,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:33:05,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224200160] [2024-09-11 19:33:05,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:33:05,231 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:33:05,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:05,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:33:05,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:33:05,232 INFO L87 Difference]: Start difference. First operand 143 states and 180 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-09-11 19:33:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:05,288 INFO L93 Difference]: Finished difference Result 218 states and 276 transitions. [2024-09-11 19:33:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:33:05,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) Word has length 30 [2024-09-11 19:33:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:05,290 INFO L225 Difference]: With dead ends: 218 [2024-09-11 19:33:05,291 INFO L226 Difference]: Without dead ends: 147 [2024-09-11 19:33:05,292 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:33:05,292 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:05,293 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:33:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-11 19:33:05,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-09-11 19:33:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.2465753424657535) internal successors, (182), 146 states have internal predecessors, (182), 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) [2024-09-11 19:33:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2024-09-11 19:33:05,351 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 30 [2024-09-11 19:33:05,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:05,352 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2024-09-11 19:33:05,352 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-09-11 19:33:05,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2024-09-11 19:33:05,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 19:33:05,353 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:05,353 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:05,353 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-11 19:33:05,353 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:05,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash -651904133, now seen corresponding path program 1 times [2024-09-11 19:33:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:05,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247758251] [2024-09-11 19:33:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:05,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:05,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247758251] [2024-09-11 19:33:05,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247758251] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:33:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407744988] [2024-09-11 19:33:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:05,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:05,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:33:05,498 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) [2024-09-11 19:33:05,499 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 19:33:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:05,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-11 19:33:05,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:33:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:05,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:33:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:05,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407744988] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:33:05,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:33:05,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-09-11 19:33:05,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608401190] [2024-09-11 19:33:05,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:33:05,853 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-11 19:33:05,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-11 19:33:05,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=341, Unknown=0, NotChecked=0, Total=600 [2024-09-11 19:33:05,854 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 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) [2024-09-11 19:33:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:06,141 INFO L93 Difference]: Finished difference Result 435 states and 585 transitions. [2024-09-11 19:33:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:33:06,142 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 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) Word has length 30 [2024-09-11 19:33:06,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:06,143 INFO L225 Difference]: With dead ends: 435 [2024-09-11 19:33:06,143 INFO L226 Difference]: Without dead ends: 291 [2024-09-11 19:33:06,144 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=392, Invalid=600, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:33:06,145 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 138 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:06,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 22 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:33:06,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-11 19:33:06,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2024-09-11 19:33:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.2344827586206897) internal successors, (358), 290 states have internal predecessors, (358), 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) [2024-09-11 19:33:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 358 transitions. [2024-09-11 19:33:06,203 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 358 transitions. Word has length 30 [2024-09-11 19:33:06,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:06,203 INFO L474 AbstractCegarLoop]: Abstraction has 291 states and 358 transitions. [2024-09-11 19:33:06,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 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) [2024-09-11 19:33:06,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 358 transitions. [2024-09-11 19:33:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-11 19:33:06,208 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:06,208 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:06,224 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-11 19:33:06,408 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-11 19:33:06,409 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:06,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:06,409 INFO L85 PathProgramCache]: Analyzing trace with hash -393067141, now seen corresponding path program 2 times [2024-09-11 19:33:06,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:06,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853938680] [2024-09-11 19:33:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:06,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:06,740 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:06,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853938680] [2024-09-11 19:33:06,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853938680] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:33:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675479818] [2024-09-11 19:33:06,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:33:06,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:06,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:33:06,743 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) [2024-09-11 19:33:06,745 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 19:33:06,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:33:06,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:33:06,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-11 19:33:06,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:33:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:07,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:33:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:07,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675479818] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:33:07,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:33:07,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 48 [2024-09-11 19:33:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214273762] [2024-09-11 19:33:07,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:33:07,593 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-11 19:33:07,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:07,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-11 19:33:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=1325, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 19:33:07,595 INFO L87 Difference]: Start difference. First operand 291 states and 358 transitions. Second operand has 49 states, 49 states have (on average 2.9591836734693877) internal successors, (145), 48 states have internal predecessors, (145), 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) [2024-09-11 19:33:08,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:08,261 INFO L93 Difference]: Finished difference Result 867 states and 1161 transitions. [2024-09-11 19:33:08,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 19:33:08,262 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.9591836734693877) internal successors, (145), 48 states have internal predecessors, (145), 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) Word has length 54 [2024-09-11 19:33:08,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:08,265 INFO L225 Difference]: With dead ends: 867 [2024-09-11 19:33:08,265 INFO L226 Difference]: Without dead ends: 579 [2024-09-11 19:33:08,267 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1552, Invalid=2480, Unknown=0, NotChecked=0, Total=4032 [2024-09-11 19:33:08,268 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 268 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:08,268 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 40 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:33:08,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-09-11 19:33:08,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-09-11 19:33:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.2283737024221453) internal successors, (710), 578 states have internal predecessors, (710), 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) [2024-09-11 19:33:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 710 transitions. [2024-09-11 19:33:08,366 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 710 transitions. Word has length 54 [2024-09-11 19:33:08,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:08,367 INFO L474 AbstractCegarLoop]: Abstraction has 579 states and 710 transitions. [2024-09-11 19:33:08,367 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.9591836734693877) internal successors, (145), 48 states have internal predecessors, (145), 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) [2024-09-11 19:33:08,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 710 transitions. [2024-09-11 19:33:08,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-09-11 19:33:08,369 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:08,370 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:08,386 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-11 19:33:08,573 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:08,574 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:08,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1728882309, now seen corresponding path program 3 times [2024-09-11 19:33:08,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:08,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309211968] [2024-09-11 19:33:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:08,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:09,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309211968] [2024-09-11 19:33:09,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309211968] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:33:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562521738] [2024-09-11 19:33:09,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:33:09,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:09,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:33:09,476 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) [2024-09-11 19:33:09,477 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 19:33:09,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-11 19:33:09,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:33:09,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-11 19:33:09,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:33:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2024-09-11 19:33:09,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:33:09,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562521738] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:33:09,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-11 19:33:09,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [33] total 36 [2024-09-11 19:33:09,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582508384] [2024-09-11 19:33:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:33:09,618 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:33:09,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:09,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:33:09,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=794, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:33:09,620 INFO L87 Difference]: Start difference. First operand 579 states and 710 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-09-11 19:33:09,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:09,702 INFO L93 Difference]: Finished difference Result 581 states and 711 transitions. [2024-09-11 19:33:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:33:09,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) Word has length 102 [2024-09-11 19:33:09,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:09,705 INFO L225 Difference]: With dead ends: 581 [2024-09-11 19:33:09,705 INFO L226 Difference]: Without dead ends: 381 [2024-09-11 19:33:09,706 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=538, Invalid=794, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:33:09,707 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:09,708 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 26 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:33:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-09-11 19:33:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-09-11 19:33:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.3289473684210527) internal successors, (505), 380 states have internal predecessors, (505), 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) [2024-09-11 19:33:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 505 transitions. [2024-09-11 19:33:09,774 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 505 transitions. Word has length 102 [2024-09-11 19:33:09,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:09,774 INFO L474 AbstractCegarLoop]: Abstraction has 381 states and 505 transitions. [2024-09-11 19:33:09,774 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-09-11 19:33:09,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 505 transitions. [2024-09-11 19:33:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-09-11 19:33:09,776 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:09,776 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:09,789 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-11 19:33:09,979 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-11 19:33:09,979 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:09,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:09,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1902818565, now seen corresponding path program 1 times [2024-09-11 19:33:09,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:09,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448700366] [2024-09-11 19:33:09,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:09,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:11,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:11,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448700366] [2024-09-11 19:33:11,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448700366] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:33:11,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233538722] [2024-09-11 19:33:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:11,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:11,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:33:11,006 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) [2024-09-11 19:33:11,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 19:33:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:11,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-11 19:33:11,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:33:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:11,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:33:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:13,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233538722] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:33:13,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:33:13,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 96 [2024-09-11 19:33:13,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384602320] [2024-09-11 19:33:13,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:33:13,249 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-09-11 19:33:13,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:13,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-09-11 19:33:13,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=5213, Unknown=0, NotChecked=0, Total=9312 [2024-09-11 19:33:13,254 INFO L87 Difference]: Start difference. First operand 381 states and 505 transitions. Second operand has 97 states, 97 states have (on average 2.979381443298969) internal successors, (289), 96 states have internal predecessors, (289), 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) [2024-09-11 19:33:14,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:14,727 INFO L93 Difference]: Finished difference Result 1143 states and 1647 transitions. [2024-09-11 19:33:14,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-11 19:33:14,728 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.979381443298969) internal successors, (289), 96 states have internal predecessors, (289), 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) Word has length 102 [2024-09-11 19:33:14,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:14,733 INFO L225 Difference]: With dead ends: 1143 [2024-09-11 19:33:14,734 INFO L226 Difference]: Without dead ends: 765 [2024-09-11 19:33:14,738 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5825 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=6176, Invalid=10080, Unknown=0, NotChecked=0, Total=16256 [2024-09-11 19:33:14,739 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 424 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:14,739 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 46 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:33:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-09-11 19:33:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2024-09-11 19:33:14,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.331151832460733) internal successors, (1017), 764 states have internal predecessors, (1017), 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) [2024-09-11 19:33:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1017 transitions. [2024-09-11 19:33:14,827 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1017 transitions. Word has length 102 [2024-09-11 19:33:14,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:14,827 INFO L474 AbstractCegarLoop]: Abstraction has 765 states and 1017 transitions. [2024-09-11 19:33:14,828 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.979381443298969) internal successors, (289), 96 states have internal predecessors, (289), 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) [2024-09-11 19:33:14,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1017 transitions. [2024-09-11 19:33:14,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-09-11 19:33:14,830 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:14,830 INFO L216 NwaCegarLoop]: trace histogram [62, 62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:14,845 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-11 19:33:15,030 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-11 19:33:15,031 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:15,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash 838720251, now seen corresponding path program 2 times [2024-09-11 19:33:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47295311] [2024-09-11 19:33:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:15,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:17,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:17,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47295311] [2024-09-11 19:33:17,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47295311] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:33:17,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527292518] [2024-09-11 19:33:17,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:33:17,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:17,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:33:17,602 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) [2024-09-11 19:33:17,604 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 19:33:17,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:33:17,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:33:17,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 19:33:17,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:33:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 305 refuted. 0 times theorem prover too weak. 5430 trivial. 0 not checked. [2024-09-11 19:33:18,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:33:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 305 refuted. 0 times theorem prover too weak. 5430 trivial. 0 not checked. [2024-09-11 19:33:18,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527292518] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:33:18,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:33:18,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 6, 6] total 74 [2024-09-11 19:33:18,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041817628] [2024-09-11 19:33:18,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:33:18,562 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-09-11 19:33:18,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-09-11 19:33:18,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2369, Invalid=3181, Unknown=0, NotChecked=0, Total=5550 [2024-09-11 19:33:18,565 INFO L87 Difference]: Start difference. First operand 765 states and 1017 transitions. Second operand has 75 states, 75 states have (on average 2.973333333333333) internal successors, (223), 74 states have internal predecessors, (223), 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) [2024-09-11 19:33:29,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:33:29,289 INFO L93 Difference]: Finished difference Result 13973 states and 18689 transitions. [2024-09-11 19:33:29,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2024-09-11 19:33:29,289 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.973333333333333) internal successors, (223), 74 states have internal predecessors, (223), 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) Word has length 198 [2024-09-11 19:33:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:33:29,348 INFO L225 Difference]: With dead ends: 13973 [2024-09-11 19:33:29,348 INFO L226 Difference]: Without dead ends: 13211 [2024-09-11 19:33:29,361 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20539 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=22797, Invalid=50915, Unknown=0, NotChecked=0, Total=73712 [2024-09-11 19:33:29,362 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 1824 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:33:29,362 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 69 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:33:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13211 states. [2024-09-11 19:33:29,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13211 to 1243. [2024-09-11 19:33:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 1.3293075684380031) internal successors, (1651), 1242 states have internal predecessors, (1651), 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) [2024-09-11 19:33:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1651 transitions. [2024-09-11 19:33:29,976 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1651 transitions. Word has length 198 [2024-09-11 19:33:29,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:33:29,977 INFO L474 AbstractCegarLoop]: Abstraction has 1243 states and 1651 transitions. [2024-09-11 19:33:29,977 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.973333333333333) internal successors, (223), 74 states have internal predecessors, (223), 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) [2024-09-11 19:33:29,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:29,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1651 transitions. [2024-09-11 19:33:29,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-09-11 19:33:29,980 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:33:29,980 INFO L216 NwaCegarLoop]: trace histogram [65, 65, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:33:29,996 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-11 19:33:30,180 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:30,181 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:33:30,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:33:30,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1307050347, now seen corresponding path program 1 times [2024-09-11 19:33:30,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:33:30,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953443138] [2024-09-11 19:33:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:33:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 0 proven. 6305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:32,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:33:32,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953443138] [2024-09-11 19:33:32,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953443138] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:33:32,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047133803] [2024-09-11 19:33:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:33:32,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:33:32,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:33:32,964 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) [2024-09-11 19:33:32,965 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-11 19:33:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:33:33,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-11 19:33:33,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:33:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 0 proven. 6305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:35,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:33:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 0 proven. 6305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:33:40,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047133803] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:33:40,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:33:40,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 201 [2024-09-11 19:33:40,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479092659] [2024-09-11 19:33:40,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:33:40,227 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 202 states [2024-09-11 19:33:40,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:33:40,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2024-09-11 19:33:40,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17959, Invalid=22643, Unknown=0, NotChecked=0, Total=40602 [2024-09-11 19:33:40,238 INFO L87 Difference]: Start difference. First operand 1243 states and 1651 transitions. Second operand has 202 states, 202 states have (on average 2.99009900990099) internal successors, (604), 201 states have internal predecessors, (604), 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) [2024-09-11 19:34:16,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:34:16,041 INFO L93 Difference]: Finished difference Result 42299 states and 56653 transitions. [2024-09-11 19:34:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-09-11 19:34:16,042 INFO L78 Accepts]: Start accepts. Automaton has has 202 states, 202 states have (on average 2.99009900990099) internal successors, (604), 201 states have internal predecessors, (604), 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) Word has length 207 [2024-09-11 19:34:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:34:16,166 INFO L225 Difference]: With dead ends: 42299 [2024-09-11 19:34:16,166 INFO L226 Difference]: Without dead ends: 41059 [2024-09-11 19:34:16,187 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26265 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=27001, Invalid=44555, Unknown=0, NotChecked=0, Total=71556 [2024-09-11 19:34:16,188 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 969 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:34:16,189 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 28 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:34:16,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41059 states. [2024-09-11 19:34:25,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41059 to 2841. [2024-09-11 19:34:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2840 states have (on average 1.3306338028169014) internal successors, (3779), 2840 states have internal predecessors, (3779), 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) [2024-09-11 19:34:25,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 3779 transitions. [2024-09-11 19:34:25,374 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 3779 transitions. Word has length 207 [2024-09-11 19:34:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:34:25,374 INFO L474 AbstractCegarLoop]: Abstraction has 2841 states and 3779 transitions. [2024-09-11 19:34:25,375 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 202 states, 202 states have (on average 2.99009900990099) internal successors, (604), 201 states have internal predecessors, (604), 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) [2024-09-11 19:34:25,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:25,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 3779 transitions. [2024-09-11 19:34:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-09-11 19:34:25,382 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:34:25,382 INFO L216 NwaCegarLoop]: trace histogram [132, 132, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:34:25,399 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-11 19:34:25,582 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:25,583 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:34:25,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:34:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash -481776515, now seen corresponding path program 2 times [2024-09-11 19:34:25,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:34:25,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532905950] [2024-09-11 19:34:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:34:25,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:34:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:34:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 26070 backedges. 0 proven. 26070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:34:35,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:34:35,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532905950] [2024-09-11 19:34:35,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532905950] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:34:35,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479086601] [2024-09-11 19:34:35,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:34:35,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:34:35,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:34:35,126 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) [2024-09-11 19:34:35,126 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-11 19:34:35,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:34:35,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:34:35,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 135 conjuncts are in the unsatisfiable core [2024-09-11 19:34:35,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:34:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 26070 backedges. 0 proven. 26070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:34:42,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 26070 backedges. 0 proven. 26070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:35:02,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479086601] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:02,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:35:02,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135, 135] total 402 [2024-09-11 19:35:02,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760871568] [2024-09-11 19:35:02,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:02,077 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 403 states [2024-09-11 19:35:02,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:02,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 403 interpolants. [2024-09-11 19:35:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71827, Invalid=90179, Unknown=0, NotChecked=0, Total=162006 [2024-09-11 19:35:02,105 INFO L87 Difference]: Start difference. First operand 2841 states and 3779 transitions. Second operand has 403 states, 403 states have (on average 2.9950372208436726) internal successors, (1207), 402 states have internal predecessors, (1207), 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)