./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.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 63cd3e528fa28694be9f2ecbe948122395c3f48db5408253e949dc50f2a74038 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 23:51:59,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:51:59,811 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:51:59,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:51:59,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:51:59,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:51:59,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:51:59,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:51:59,843 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:51:59,844 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:51:59,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:51:59,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:51:59,845 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:51:59,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:51:59,847 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:51:59,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:51:59,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:51:59,848 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:51:59,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:51:59,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:51:59,849 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:51:59,852 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:51:59,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:51:59,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:51:59,853 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:51:59,853 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:51:59,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:51:59,853 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:51:59,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:51:59,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:51:59,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:51:59,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:51:59,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:51:59,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:51:59,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:51:59,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:51:59,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:51:59,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:51:59,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:51:59,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:51:59,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:51:59,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:51:59,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63cd3e528fa28694be9f2ecbe948122395c3f48db5408253e949dc50f2a74038 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:52:00,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:52:00,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:52:00,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:52:00,106 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:52:00,107 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:52:00,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c [2024-09-24 23:52:01,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:52:01,669 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:52:01,669 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c [2024-09-24 23:52:01,676 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e9c3d452d/ee3abdb05de343da84ee0d45eb7b824f/FLAGc9c170d67 [2024-09-24 23:52:02,065 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e9c3d452d/ee3abdb05de343da84ee0d45eb7b824f [2024-09-24 23:52:02,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:52:02,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:52:02,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:52:02,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:52:02,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:52:02,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c745f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02, skipping insertion in model container [2024-09-24 23:52:02,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,098 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:52:02,219 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c[526,539] [2024-09-24 23:52:02,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:52:02,243 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:52:02,257 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c[526,539] [2024-09-24 23:52:02,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:52:02,279 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:52:02,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02 WrapperNode [2024-09-24 23:52:02,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:52:02,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:52:02,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:52:02,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:52:02,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,303 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:52:02,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:52:02,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:52:02,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:52:02,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:52:02,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,313 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,325 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-09-24 23:52:02,325 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:52:02,335 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:52:02,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:52:02,336 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:52:02,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (1/1) ... [2024-09-24 23:52:02,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:52:02,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:52:02,376 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) [2024-09-24 23:52:02,378 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 [2024-09-24 23:52:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:52:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-24 23:52:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-24 23:52:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:52:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:52:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:52:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-24 23:52:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:52:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:52:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:52:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:52:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:52:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:52:02,495 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:52:02,497 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:52:02,687 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-24 23:52:02,688 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:52:02,716 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:52:02,716 INFO L317 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-24 23:52:02,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:52:02 BoogieIcfgContainer [2024-09-24 23:52:02,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:52:02,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:52:02,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:52:02,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:52:02,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:52:02" (1/3) ... [2024-09-24 23:52:02,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fd2dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:52:02, skipping insertion in model container [2024-09-24 23:52:02,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:02" (2/3) ... [2024-09-24 23:52:02,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fd2dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:52:02, skipping insertion in model container [2024-09-24 23:52:02,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:52:02" (3/3) ... [2024-09-24 23:52:02,729 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound50.c [2024-09-24 23:52:02,745 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:52:02,746 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:52:02,804 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:52:02,811 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;@9218bd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:52:02,811 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:52:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:52:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-24 23:52:02,834 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:52:02,835 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:52:02,835 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:52:02,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash -909137831, now seen corresponding path program 1 times [2024-09-24 23:52:02,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:52:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837237243] [2024-09-24 23:52:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:52:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:03,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:52:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:03,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:52:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:52:03,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:52:03,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837237243] [2024-09-24 23:52:03,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837237243] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:52:03,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:52:03,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 23:52:03,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869564127] [2024-09-24 23:52:03,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:52:03,031 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 23:52:03,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:52:03,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 23:52:03,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:52:03,052 INFO L87 Difference]: Start difference. First operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:52:03,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:52:03,080 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2024-09-24 23:52:03,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 23:52:03,084 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-24 23:52:03,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:52:03,089 INFO L225 Difference]: With dead ends: 58 [2024-09-24 23:52:03,089 INFO L226 Difference]: Without dead ends: 29 [2024-09-24 23:52:03,092 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:52:03,095 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:52:03,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:52:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-24 23:52:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-24 23:52:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:52:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-09-24 23:52:03,132 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2024-09-24 23:52:03,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:52:03,133 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-09-24 23:52:03,133 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:52:03,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-09-24 23:52:03,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-24 23:52:03,135 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:52:03,135 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:52:03,135 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:52:03,135 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:52:03,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:03,136 INFO L85 PathProgramCache]: Analyzing trace with hash -229079461, now seen corresponding path program 1 times [2024-09-24 23:52:03,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:52:03,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195913879] [2024-09-24 23:52:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:03,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:52:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:03,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:52:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:03,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:52:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:52:03,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:52:03,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195913879] [2024-09-24 23:52:03,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195913879] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:52:03,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:52:03,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:52:03,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303336122] [2024-09-24 23:52:03,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:52:03,350 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:52:03,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:52:03,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:52:03,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:52:03,353 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:52:03,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:52:03,433 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-09-24 23:52:03,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:52:03,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-24 23:52:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:52:03,436 INFO L225 Difference]: With dead ends: 42 [2024-09-24 23:52:03,436 INFO L226 Difference]: Without dead ends: 40 [2024-09-24 23:52:03,437 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:52:03,438 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:52:03,440 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:52:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-24 23:52:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-09-24 23:52:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:52:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-09-24 23:52:03,456 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2024-09-24 23:52:03,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:52:03,457 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-09-24 23:52:03,458 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:52:03,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:03,458 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-09-24 23:52:03,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-24 23:52:03,460 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:52:03,460 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:52:03,461 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-24 23:52:03,461 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:52:03,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:03,463 INFO L85 PathProgramCache]: Analyzing trace with hash 520476838, now seen corresponding path program 1 times [2024-09-24 23:52:03,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:52:03,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822423505] [2024-09-24 23:52:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:03,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:52:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:03,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:52:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:03,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:52:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:03,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-24 23:52:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:52:03,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:52:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822423505] [2024-09-24 23:52:03,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822423505] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:52:03,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:52:03,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:52:03,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128936028] [2024-09-24 23:52:03,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:52:03,634 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:52:03,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:52:03,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:52:03,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:52:03,635 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-24 23:52:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:52:03,704 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-09-24 23:52:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:52:03,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-24 23:52:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:52:03,706 INFO L225 Difference]: With dead ends: 46 [2024-09-24 23:52:03,707 INFO L226 Difference]: Without dead ends: 44 [2024-09-24 23:52:03,708 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:52:03,709 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:52:03,712 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:52:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-24 23:52:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-24 23:52:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:52:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-24 23:52:03,727 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-09-24 23:52:03,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:52:03,728 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-24 23:52:03,728 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-24 23:52:03,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:03,729 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-24 23:52:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-24 23:52:03,730 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:52:03,730 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:52:03,730 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-24 23:52:03,731 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:52:03,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:03,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1140086011, now seen corresponding path program 1 times [2024-09-24 23:52:03,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:52:03,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605017855] [2024-09-24 23:52:03,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:03,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:52:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:52:03,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108463541] [2024-09-24 23:52:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:03,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:52:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:52:03,755 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) [2024-09-24 23:52:03,757 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:52:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:03,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-24 23:52:03,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:52:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:52:03,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:52:03,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:52:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605017855] [2024-09-24 23:52:03,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:52:03,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108463541] [2024-09-24 23:52:03,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108463541] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:52:03,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:52:03,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:52:03,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844830921] [2024-09-24 23:52:03,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:52:03,943 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:52:03,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:52:03,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:52:03,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:52:03,944 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-24 23:52:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:52:04,006 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-09-24 23:52:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:52:04,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-24 23:52:04,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:52:04,011 INFO L225 Difference]: With dead ends: 63 [2024-09-24 23:52:04,011 INFO L226 Difference]: Without dead ends: 50 [2024-09-24 23:52:04,011 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:52:04,012 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:52:04,012 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:52:04,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-24 23:52:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-24 23:52:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:52:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-09-24 23:52:04,023 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 26 [2024-09-24 23:52:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:52:04,023 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-09-24 23:52:04,024 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-24 23:52:04,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-09-24 23:52:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-24 23:52:04,025 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:52:04,025 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:52:04,041 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-24 23:52:04,230 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:52:04,231 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:52:04,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:04,231 INFO L85 PathProgramCache]: Analyzing trace with hash -975701997, now seen corresponding path program 1 times [2024-09-24 23:52:04,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:52:04,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176070461] [2024-09-24 23:52:04,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:04,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:52:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:52:04,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154527483] [2024-09-24 23:52:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:04,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:52:04,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:52:04,263 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) [2024-09-24 23:52:04,265 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:52:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:04,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-24 23:52:04,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:52:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:52:04,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:52:04,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:52:04,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176070461] [2024-09-24 23:52:04,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:52:04,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154527483] [2024-09-24 23:52:04,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154527483] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:52:04,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:52:04,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:52:04,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392138514] [2024-09-24 23:52:04,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:52:04,396 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:52:04,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:52:04,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:52:04,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:52:04,397 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-24 23:52:04,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:52:04,468 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-09-24 23:52:04,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:52:04,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-24 23:52:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:52:04,472 INFO L225 Difference]: With dead ends: 63 [2024-09-24 23:52:04,472 INFO L226 Difference]: Without dead ends: 61 [2024-09-24 23:52:04,473 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:52:04,474 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:52:04,474 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:52:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-24 23:52:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-09-24 23:52:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:52:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-09-24 23:52:04,494 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 33 [2024-09-24 23:52:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:52:04,496 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-09-24 23:52:04,496 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-24 23:52:04,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-09-24 23:52:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-24 23:52:04,497 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:52:04,498 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:52:04,514 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-24 23:52:04,698 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:52:04,699 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:52:04,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:04,699 INFO L85 PathProgramCache]: Analyzing trace with hash -928833564, now seen corresponding path program 1 times [2024-09-24 23:52:04,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:52:04,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428778586] [2024-09-24 23:52:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:04,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:52:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:52:04,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112790489] [2024-09-24 23:52:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:04,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:52:04,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:52:04,718 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) [2024-09-24 23:52:04,720 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:52:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:04,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-24 23:52:04,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:52:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:52:04,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:52:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-24 23:52:04,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:52:04,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428778586] [2024-09-24 23:52:04,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:52:04,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112790489] [2024-09-24 23:52:04,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112790489] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-24 23:52:04,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:52:04,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-24 23:52:04,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394522634] [2024-09-24 23:52:04,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:52:04,972 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:52:04,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:52:04,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:52:04,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:52:04,973 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-24 23:52:05,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:52:05,048 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-09-24 23:52:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:52:05,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-09-24 23:52:05,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:52:05,052 INFO L225 Difference]: With dead ends: 70 [2024-09-24 23:52:05,052 INFO L226 Difference]: Without dead ends: 68 [2024-09-24 23:52:05,052 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-24 23:52:05,053 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:52:05,055 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:52:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-24 23:52:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-09-24 23:52:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:52:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-09-24 23:52:05,078 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 43 [2024-09-24 23:52:05,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:52:05,079 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-09-24 23:52:05,080 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-24 23:52:05,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-09-24 23:52:05,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-24 23:52:05,081 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:52:05,081 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:52:05,096 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-24 23:52:05,281 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-24 23:52:05,282 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:52:05,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:05,282 INFO L85 PathProgramCache]: Analyzing trace with hash -238148106, now seen corresponding path program 1 times [2024-09-24 23:52:05,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:52:05,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715839014] [2024-09-24 23:52:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:05,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:52:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:05,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:52:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:05,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:52:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:05,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-24 23:52:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:05,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:52:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:05,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:52:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:05,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:52:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:05,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:52:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:05,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:52:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:52:05,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:52:05,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715839014] [2024-09-24 23:52:05,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715839014] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:52:05,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:52:05,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:52:05,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267636037] [2024-09-24 23:52:05,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:52:05,424 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:52:05,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:52:05,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:52:05,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:52:05,425 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-24 23:52:05,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:52:05,476 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-09-24 23:52:05,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:52:05,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-24 23:52:05,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:52:05,478 INFO L225 Difference]: With dead ends: 75 [2024-09-24 23:52:05,478 INFO L226 Difference]: Without dead ends: 63 [2024-09-24 23:52:05,479 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:52:05,479 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:52:05,480 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:52:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-24 23:52:05,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-24 23:52:05,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:52:05,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-09-24 23:52:05,491 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 49 [2024-09-24 23:52:05,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:52:05,491 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-09-24 23:52:05,492 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-24 23:52:05,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-09-24 23:52:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-24 23:52:05,493 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:52:05,493 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:52:05,493 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-24 23:52:05,494 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:52:05,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1374799408, now seen corresponding path program 1 times [2024-09-24 23:52:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:52:05,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022208286] [2024-09-24 23:52:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:05,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:52:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:52:05,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680116180] [2024-09-24 23:52:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:05,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:52:05,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:52:05,523 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) [2024-09-24 23:52:05,524 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:52:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:05,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-24 23:52:05,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:52:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-24 23:52:05,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:52:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-24 23:52:07,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:52:07,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022208286] [2024-09-24 23:52:07,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:52:07,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680116180] [2024-09-24 23:52:07,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680116180] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:52:07,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:52:07,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-24 23:52:07,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193525350] [2024-09-24 23:52:07,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:52:07,340 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-24 23:52:07,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:52:07,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-24 23:52:07,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-24 23:52:07,341 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-24 23:52:07,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:52:07,980 INFO L93 Difference]: Finished difference Result 138 states and 183 transitions. [2024-09-24 23:52:07,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 23:52:07,980 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2024-09-24 23:52:07,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:52:07,983 INFO L225 Difference]: With dead ends: 138 [2024-09-24 23:52:07,985 INFO L226 Difference]: Without dead ends: 115 [2024-09-24 23:52:07,985 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-24 23:52:07,986 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:52:07,986 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 225 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:52:07,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-24 23:52:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-24 23:52:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:52:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-09-24 23:52:08,036 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 63 [2024-09-24 23:52:08,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:52:08,037 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-09-24 23:52:08,037 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-24 23:52:08,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-09-24 23:52:08,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-24 23:52:08,041 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:52:08,041 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:52:08,057 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 23:52:08,241 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:52:08,241 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:52:08,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2048390162, now seen corresponding path program 1 times [2024-09-24 23:52:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:52:08,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563991057] [2024-09-24 23:52:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:08,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:52:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:52:08,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688159582] [2024-09-24 23:52:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:08,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:52:08,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:52:08,265 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) [2024-09-24 23:52:08,271 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-24 23:52:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:08,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-24 23:52:08,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:52:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-24 23:52:08,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:52:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-24 23:52:09,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:52:09,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563991057] [2024-09-24 23:52:09,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:52:09,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688159582] [2024-09-24 23:52:09,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688159582] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:52:09,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:52:09,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-24 23:52:09,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696449451] [2024-09-24 23:52:09,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:52:09,084 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-24 23:52:09,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:52:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-24 23:52:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-24 23:52:09,086 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-24 23:52:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:52:09,814 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2024-09-24 23:52:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-24 23:52:09,815 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-09-24 23:52:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:52:09,817 INFO L225 Difference]: With dead ends: 168 [2024-09-24 23:52:09,817 INFO L226 Difference]: Without dead ends: 136 [2024-09-24 23:52:09,818 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-09-24 23:52:09,818 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-24 23:52:09,819 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 195 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-24 23:52:09,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-24 23:52:09,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2024-09-24 23:52:09,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 70 states have internal predecessors, (76), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-24 23:52:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-09-24 23:52:09,852 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 74 [2024-09-24 23:52:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:52:09,852 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-09-24 23:52:09,852 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-24 23:52:09,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-09-24 23:52:09,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-24 23:52:09,854 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:52:09,854 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:52:09,871 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-24 23:52:10,054 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:52:10,055 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:52:10,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:10,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1556827571, now seen corresponding path program 1 times [2024-09-24 23:52:10,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:52:10,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201197760] [2024-09-24 23:52:10,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:10,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:52:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:52:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:52:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-24 23:52:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:52:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:52:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:52:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:52:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:52:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:52:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:52:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:52:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:52:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:52:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:52:10,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:52:10,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201197760] [2024-09-24 23:52:10,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201197760] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:52:10,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134278402] [2024-09-24 23:52:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:10,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:52:10,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:52:10,402 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) [2024-09-24 23:52:10,404 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-24 23:52:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:52:10,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-24 23:52:10,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:52:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:52:10,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:52:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:52:10,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134278402] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:52:10,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:52:10,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-24 23:52:10,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909177373] [2024-09-24 23:52:10,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:52:10,976 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-24 23:52:10,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:52:10,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-24 23:52:10,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:52:10,977 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-24 23:52:11,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:52:11,180 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2024-09-24 23:52:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-24 23:52:11,180 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 79 [2024-09-24 23:52:11,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:52:11,182 INFO L225 Difference]: With dead ends: 129 [2024-09-24 23:52:11,182 INFO L226 Difference]: Without dead ends: 100 [2024-09-24 23:52:11,183 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-24 23:52:11,183 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:52:11,183 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 225 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:52:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-24 23:52:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-09-24 23:52:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 63 states have internal predecessors, (67), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:52:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2024-09-24 23:52:11,211 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 79 [2024-09-24 23:52:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:52:11,212 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2024-09-24 23:52:11,212 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-24 23:52:11,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2024-09-24 23:52:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-24 23:52:11,214 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:52:11,214 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:52:11,230 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-24 23:52:11,414 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-24 23:52:11,415 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:52:11,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:52:11,415 INFO L85 PathProgramCache]: Analyzing trace with hash -802122381, now seen corresponding path program 2 times [2024-09-24 23:52:11,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:52:11,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407746842] [2024-09-24 23:52:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:52:11,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:52:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:52:11,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90590932] [2024-09-24 23:52:11,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:52:11,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:52:11,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:52:11,446 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) [2024-09-24 23:52:11,448 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-24 23:52:11,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:52:11,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:52:11,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-24 23:52:11,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:52:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-24 23:52:11,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:52:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-24 23:52:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:52:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407746842] [2024-09-24 23:52:28,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:52:28,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90590932] [2024-09-24 23:52:28,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90590932] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:52:28,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:52:28,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-09-24 23:52:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098767150] [2024-09-24 23:52:28,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:52:28,004 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-24 23:52:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:52:28,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-24 23:52:28,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-09-24 23:52:28,005 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-24 23:52:40,706 WARN L293 SmtUtils]: Spent 12.27s on a formula simplification. DAG size of input: 171 DAG size of output: 83 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-24 23:52:41,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:52:43,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:53:00,676 WARN L293 SmtUtils]: Spent 11.15s on a formula simplification. DAG size of input: 156 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-24 23:53:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:53:01,743 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2024-09-24 23:53:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-24 23:53:01,743 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 93 [2024-09-24 23:53:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:53:01,745 INFO L225 Difference]: With dead ends: 203 [2024-09-24 23:53:01,745 INFO L226 Difference]: Without dead ends: 170 [2024-09-24 23:53:01,746 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2024-09-24 23:53:01,746 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 66 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-09-24 23:53:01,747 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 513 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-09-24 23:53:01,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-24 23:53:01,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2024-09-24 23:53:01,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.183673469387755) internal successors, (116), 105 states have internal predecessors, (116), 51 states have call successors, (51), 17 states have call predecessors, (51), 16 states have return successors, (49), 43 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-24 23:53:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 216 transitions. [2024-09-24 23:53:01,798 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 216 transitions. Word has length 93 [2024-09-24 23:53:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:53:01,798 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 216 transitions. [2024-09-24 23:53:01,798 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-24 23:53:01,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:53:01,799 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 216 transitions. [2024-09-24 23:53:01,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-24 23:53:01,800 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:53:01,800 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:53:01,817 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-24 23:53:02,004 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:53:02,004 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:53:02,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:53:02,005 INFO L85 PathProgramCache]: Analyzing trace with hash 644553835, now seen corresponding path program 2 times [2024-09-24 23:53:02,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:53:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131973927] [2024-09-24 23:53:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:53:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:53:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:53:02,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381497327] [2024-09-24 23:53:02,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:53:02,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:53:02,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:53:02,061 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) [2024-09-24 23:53:02,064 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-24 23:53:02,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:53:02,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:53:02,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-24 23:53:02,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:53:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-24 23:53:02,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:53:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-24 23:53:05,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:53:05,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131973927] [2024-09-24 23:53:05,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:53:05,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381497327] [2024-09-24 23:53:05,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381497327] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:53:05,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:53:05,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-09-24 23:53:05,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904980864] [2024-09-24 23:53:05,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:53:05,670 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-24 23:53:05,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:53:05,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-24 23:53:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2024-09-24 23:53:05,672 INFO L87 Difference]: Start difference. First operand 166 states and 216 transitions. Second operand has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-24 23:53:09,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:53:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:53:10,233 INFO L93 Difference]: Finished difference Result 246 states and 327 transitions. [2024-09-24 23:53:10,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-24 23:53:10,234 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) Word has length 104 [2024-09-24 23:53:10,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:53:10,235 INFO L225 Difference]: With dead ends: 246 [2024-09-24 23:53:10,235 INFO L226 Difference]: Without dead ends: 185 [2024-09-24 23:53:10,238 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2024-09-24 23:53:10,238 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:53:10,238 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 422 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-09-24 23:53:10,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-09-24 23:53:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 161. [2024-09-24 23:53:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 103 states have internal predecessors, (112), 47 states have call successors, (47), 18 states have call predecessors, (47), 17 states have return successors, (45), 39 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-24 23:53:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 204 transitions. [2024-09-24 23:53:10,321 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 204 transitions. Word has length 104 [2024-09-24 23:53:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:53:10,322 INFO L474 AbstractCegarLoop]: Abstraction has 161 states and 204 transitions. [2024-09-24 23:53:10,322 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-24 23:53:10,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:53:10,323 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 204 transitions. [2024-09-24 23:53:10,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-24 23:53:10,324 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:53:10,324 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:53:10,340 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-24 23:53:10,528 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:53:10,529 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:53:10,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:53:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1191181482, now seen corresponding path program 2 times [2024-09-24 23:53:10,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:53:10,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696806478] [2024-09-24 23:53:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:53:10,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:53:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:53:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:53:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-24 23:53:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:53:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:53:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:53:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:53:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:53:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:53:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:53:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:53:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:53:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:53:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:53:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:53:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:53:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:53:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-24 23:53:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-24 23:53:10,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:53:10,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696806478] [2024-09-24 23:53:10,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696806478] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:53:10,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812719822] [2024-09-24 23:53:10,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:53:10,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:53:10,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:53:10,991 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) [2024-09-24 23:53:10,994 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-24 23:53:11,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:53:11,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:53:11,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-24 23:53:11,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:53:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-24 23:53:11,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:53:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-24 23:53:12,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812719822] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:53:12,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:53:12,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 25 [2024-09-24 23:53:12,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839300107] [2024-09-24 23:53:12,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:53:12,293 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-24 23:53:12,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:53:12,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-24 23:53:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-24 23:53:12,294 INFO L87 Difference]: Start difference. First operand 161 states and 204 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-24 23:53:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:53:12,677 INFO L93 Difference]: Finished difference Result 187 states and 231 transitions. [2024-09-24 23:53:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-24 23:53:12,678 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) Word has length 109 [2024-09-24 23:53:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:53:12,679 INFO L225 Difference]: With dead ends: 187 [2024-09-24 23:53:12,679 INFO L226 Difference]: Without dead ends: 145 [2024-09-24 23:53:12,679 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2024-09-24 23:53:12,679 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:53:12,680 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 334 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:53:12,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-09-24 23:53:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2024-09-24 23:53:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 89 states have internal predecessors, (96), 38 states have call successors, (38), 17 states have call predecessors, (38), 16 states have return successors, (36), 32 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-24 23:53:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 170 transitions. [2024-09-24 23:53:12,744 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 170 transitions. Word has length 109 [2024-09-24 23:53:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:53:12,744 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 170 transitions. [2024-09-24 23:53:12,745 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-24 23:53:12,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:53:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 170 transitions. [2024-09-24 23:53:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-24 23:53:12,746 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:53:12,746 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:53:12,763 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-24 23:53:12,950 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-24 23:53:12,950 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:53:12,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:53:12,951 INFO L85 PathProgramCache]: Analyzing trace with hash -626389098, now seen corresponding path program 1 times [2024-09-24 23:53:12,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:53:12,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900887824] [2024-09-24 23:53:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:53:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:53:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:53:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:53:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-24 23:53:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:53:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:53:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:53:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:53:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:53:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:53:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:53:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:53:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:53:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:53:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:53:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:53:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:53:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:53:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-24 23:53:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-24 23:53:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:53:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-24 23:53:13,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:53:13,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900887824] [2024-09-24 23:53:13,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900887824] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:53:13,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073470342] [2024-09-24 23:53:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:53:13,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:53:13,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:53:13,176 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:53:13,178 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-24 23:53:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:13,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-24 23:53:13,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:53:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-24 23:53:13,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:53:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-24 23:53:13,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073470342] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:53:13,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:53:13,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 9 [2024-09-24 23:53:13,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993031289] [2024-09-24 23:53:13,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:53:13,476 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-24 23:53:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:53:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-24 23:53:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-24 23:53:13,477 INFO L87 Difference]: Start difference. First operand 139 states and 170 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-24 23:53:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:53:13,637 INFO L93 Difference]: Finished difference Result 155 states and 191 transitions. [2024-09-24 23:53:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-24 23:53:13,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 121 [2024-09-24 23:53:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:53:13,639 INFO L225 Difference]: With dead ends: 155 [2024-09-24 23:53:13,639 INFO L226 Difference]: Without dead ends: 148 [2024-09-24 23:53:13,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-24 23:53:13,640 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:53:13,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 185 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:53:13,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-09-24 23:53:13,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2024-09-24 23:53:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 93 states have internal predecessors, (100), 42 states have call successors, (42), 17 states have call predecessors, (42), 16 states have return successors, (40), 36 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-24 23:53:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2024-09-24 23:53:13,734 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 121 [2024-09-24 23:53:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:53:13,734 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2024-09-24 23:53:13,735 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-24 23:53:13,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:53:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2024-09-24 23:53:13,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-24 23:53:13,737 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:53:13,737 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:53:13,754 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-24 23:53:13,938 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-24 23:53:13,938 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:53:13,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:53:13,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1967500462, now seen corresponding path program 1 times [2024-09-24 23:53:13,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:53:13,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624962092] [2024-09-24 23:53:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:53:13,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:53:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:53:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:53:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-24 23:53:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:53:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:53:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:53:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:53:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:53:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:53:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:53:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:53:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:53:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:53:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-24 23:53:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:53:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:53:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:53:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-24 23:53:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-24 23:53:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:53:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2024-09-24 23:53:14,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:53:14,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624962092] [2024-09-24 23:53:14,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624962092] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:53:14,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509450286] [2024-09-24 23:53:14,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:53:14,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:53:14,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:53:14,163 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:53:14,165 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-24 23:53:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:53:14,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-24 23:53:14,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:53:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-09-24 23:53:14,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:53:14,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509450286] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:53:14,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:53:14,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2024-09-24 23:53:14,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178783635] [2024-09-24 23:53:14,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:53:14,342 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-24 23:53:14,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:53:14,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-24 23:53:14,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-09-24 23:53:14,343 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-24 23:53:14,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:53:14,516 INFO L93 Difference]: Finished difference Result 190 states and 238 transitions. [2024-09-24 23:53:14,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-24 23:53:14,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 123 [2024-09-24 23:53:14,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:53:14,518 INFO L225 Difference]: With dead ends: 190 [2024-09-24 23:53:14,518 INFO L226 Difference]: Without dead ends: 147 [2024-09-24 23:53:14,518 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-24 23:53:14,519 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 14 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:53:14,519 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 125 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:53:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-24 23:53:14,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2024-09-24 23:53:14,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 83 states have internal predecessors, (88), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:53:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2024-09-24 23:53:14,595 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 123 [2024-09-24 23:53:14,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:53:14,596 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2024-09-24 23:53:14,596 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-24 23:53:14,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:53:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2024-09-24 23:53:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-24 23:53:14,597 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:53:14,597 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:53:14,616 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-24 23:53:14,798 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-24 23:53:14,798 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:53:14,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:53:14,798 INFO L85 PathProgramCache]: Analyzing trace with hash -478157618, now seen corresponding path program 3 times [2024-09-24 23:53:14,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:53:14,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398731029] [2024-09-24 23:53:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:53:14,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:53:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:53:14,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477112433] [2024-09-24 23:53:14,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:53:14,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:53:14,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:53:14,849 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:53:14,851 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-24 23:53:14,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-24 23:53:14,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:53:14,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-24 23:53:14,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:53:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 163 proven. 53 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2024-09-24 23:53:15,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:53:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-24 23:53:15,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:53:15,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398731029] [2024-09-24 23:53:15,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:53:15,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477112433] [2024-09-24 23:53:15,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477112433] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:53:15,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:53:15,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-09-24 23:53:15,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797850548] [2024-09-24 23:53:15,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:53:15,181 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-24 23:53:15,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:53:15,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-24 23:53:15,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-09-24 23:53:15,182 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-24 23:53:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:53:15,379 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2024-09-24 23:53:15,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-24 23:53:15,380 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) Word has length 134 [2024-09-24 23:53:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:53:15,383 INFO L225 Difference]: With dead ends: 130 [2024-09-24 23:53:15,383 INFO L226 Difference]: Without dead ends: 0 [2024-09-24 23:53:15,384 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-09-24 23:53:15,384 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:53:15,384 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 161 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:53:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-24 23:53:15,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-24 23:53:15,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 23:53:15,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-24 23:53:15,386 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-24 23:53:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:53:15,387 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-24 23:53:15,388 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-24 23:53:15,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:53:15,388 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-24 23:53:15,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-24 23:53:15,390 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-24 23:53:15,402 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-24 23:53:15,590 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-24 23:53:15,593 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:53:15,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-24 23:53:18,106 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-24 23:53:18,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:53:18 BoogieIcfgContainer [2024-09-24 23:53:18,122 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-24 23:53:18,122 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-24 23:53:18,122 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-24 23:53:18,122 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-24 23:53:18,122 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:52:02" (3/4) ... [2024-09-24 23:53:18,124 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-24 23:53:18,176 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-24 23:53:18,176 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-24 23:53:18,177 INFO L158 Benchmark]: Toolchain (without parser) took 76107.84ms. Allocated memory was 148.9MB in the beginning and 287.3MB in the end (delta: 138.4MB). Free memory was 95.4MB in the beginning and 197.5MB in the end (delta: -102.1MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2024-09-24 23:53:18,178 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 148.9MB. Free memory is still 108.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:53:18,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.58ms. Allocated memory is still 148.9MB. Free memory was 95.0MB in the beginning and 83.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-24 23:53:18,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.58ms. Allocated memory is still 148.9MB. Free memory was 83.5MB in the beginning and 82.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:53:18,179 INFO L158 Benchmark]: Boogie Preprocessor took 31.15ms. Allocated memory is still 148.9MB. Free memory was 82.3MB in the beginning and 80.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:53:18,179 INFO L158 Benchmark]: RCFGBuilder took 381.46ms. Allocated memory is still 148.9MB. Free memory was 80.4MB in the beginning and 66.9MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-24 23:53:18,179 INFO L158 Benchmark]: TraceAbstraction took 75401.51ms. Allocated memory was 148.9MB in the beginning and 287.3MB in the end (delta: 138.4MB). Free memory was 66.1MB in the beginning and 199.6MB in the end (delta: -133.5MB). Peak memory consumption was 94.0MB. Max. memory is 16.1GB. [2024-09-24 23:53:18,180 INFO L158 Benchmark]: Witness Printer took 54.51ms. Allocated memory is still 287.3MB. Free memory was 199.6MB in the beginning and 197.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:53:18,181 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 148.9MB. Free memory is still 108.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.58ms. Allocated memory is still 148.9MB. Free memory was 95.0MB in the beginning and 83.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.58ms. Allocated memory is still 148.9MB. Free memory was 83.5MB in the beginning and 82.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.15ms. Allocated memory is still 148.9MB. Free memory was 82.3MB in the beginning and 80.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.46ms. Allocated memory is still 148.9MB. Free memory was 80.4MB in the beginning and 66.9MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 75401.51ms. Allocated memory was 148.9MB in the beginning and 287.3MB in the end (delta: 138.4MB). Free memory was 66.1MB in the beginning and 199.6MB in the end (delta: -133.5MB). Peak memory consumption was 94.0MB. Max. memory is 16.1GB. * Witness Printer took 54.51ms. Allocated memory is still 287.3MB. Free memory was 199.6MB in the beginning and 197.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.8s, OverallIterations: 16, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 41.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 319 SdHoareTripleChecker+Valid, 12.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 3086 SdHoareTripleChecker+Invalid, 11.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2515 mSDsCounter, 424 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2567 IncrementalHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 424 mSolverCounterUnsat, 571 mSDtfsCounter, 2567 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2069 GetRequests, 1867 SyntacticMatches, 10 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 34.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=11, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 16 MinimizatonAttempts, 96 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 27.0s InterpolantComputationTime, 2106 NumberOfCodeBlocks, 2036 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2327 ConstructedInterpolants, 0 QuantifiedInterpolants, 21218 SizeOfPredicates, 25 NumberOfNonLiveVariables, 2338 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 29 InterpolantComputations, 8 PerfectInterpolantSequences, 9533/10134 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((d == p) && (1 <= p)) && (((long long) A + d) == (((long long) q + p) + r))) && (B == 1)) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((((A == r) && (((long long) A + d) == ((long long) p + r))) && ((d / 2) <= r)) && ((d % 2) == 0)) && (q == 0)) && (B == 1)) && (4 <= (d / 2)))) || ((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-09-24 23:53:18,270 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE