./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 18:36:41,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 18:36:41,127 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 18:36:41,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 18:36:41,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 18:36:41,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 18:36:41,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 18:36:41,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 18:36:41,165 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 18:36:41,166 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 18:36:41,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 18:36:41,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 18:36:41,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 18:36:41,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 18:36:41,169 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 18:36:41,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 18:36:41,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 18:36:41,170 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 18:36:41,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 18:36:41,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 18:36:41,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 18:36:41,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 18:36:41,172 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 18:36:41,172 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 18:36:41,172 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 18:36:41,173 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 18:36:41,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 18:36:41,173 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 18:36:41,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 18:36:41,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 18:36:41,174 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 18:36:41,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 18:36:41,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:36:41,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 18:36:41,175 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 18:36:41,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 18:36:41,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 18:36:41,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 18:36:41,176 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 18:36:41,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 18:36:41,177 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 18:36:41,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 18:36:41,177 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 18:36:41,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 18:36:41,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 18:36:41,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 18:36:41,462 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 18:36:41,462 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 18:36:41,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2024-09-17 18:36:42,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 18:36:43,110 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 18:36:43,110 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2024-09-17 18:36:43,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b6cafba24/1797a982e1444e5890f593727467e8aa/FLAG2ad90034e [2024-09-17 18:36:43,478 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b6cafba24/1797a982e1444e5890f593727467e8aa [2024-09-17 18:36:43,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 18:36:43,481 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 18:36:43,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 18:36:43,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 18:36:43,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 18:36:43,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20430112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43, skipping insertion in model container [2024-09-17 18:36:43,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,510 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 18:36:43,657 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/cohencu-ll_valuebound10.c[588,601] [2024-09-17 18:36:43,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:36:43,693 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 18:36:43,713 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/cohencu-ll_valuebound10.c[588,601] [2024-09-17 18:36:43,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:36:43,751 INFO L204 MainTranslator]: Completed translation [2024-09-17 18:36:43,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43 WrapperNode [2024-09-17 18:36:43,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 18:36:43,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 18:36:43,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 18:36:43,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 18:36:43,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,789 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 18:36:43,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 18:36:43,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 18:36:43,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 18:36:43,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 18:36:43,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,807 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,819 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-17 18:36:43,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 18:36:43,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 18:36:43,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 18:36:43,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 18:36:43,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (1/1) ... [2024-09-17 18:36:43,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:36:43,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:43,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-17 18:36:43,882 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-17 18:36:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 18:36:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 18:36:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 18:36:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 18:36:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 18:36:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 18:36:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 18:36:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 18:36:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 18:36:43,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 18:36:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 18:36:43,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 18:36:44,007 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 18:36:44,010 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 18:36:44,224 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-17 18:36:44,224 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 18:36:44,246 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 18:36:44,247 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-17 18:36:44,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:36:44 BoogieIcfgContainer [2024-09-17 18:36:44,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 18:36:44,250 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 18:36:44,250 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 18:36:44,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 18:36:44,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 06:36:43" (1/3) ... [2024-09-17 18:36:44,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398b560c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:36:44, skipping insertion in model container [2024-09-17 18:36:44,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:36:43" (2/3) ... [2024-09-17 18:36:44,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398b560c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:36:44, skipping insertion in model container [2024-09-17 18:36:44,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:36:44" (3/3) ... [2024-09-17 18:36:44,256 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.c [2024-09-17 18:36:44,272 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 18:36:44,273 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 18:36:44,321 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 18:36:44,333 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;@3021ef9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 18:36:44,334 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 18:36:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-17 18:36:44,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-17 18:36:44,348 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:44,348 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:44,349 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:44,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:44,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1802650881, now seen corresponding path program 1 times [2024-09-17 18:36:44,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:44,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119608489] [2024-09-17 18:36:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:44,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:36:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:44,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:36:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:36:44,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:44,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119608489] [2024-09-17 18:36:44,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119608489] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:36:44,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:36:44,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 18:36:44,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647078043] [2024-09-17 18:36:44,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:36:44,552 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 18:36:44,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:44,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 18:36:44,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:36:44,572 INFO L87 Difference]: Start difference. First operand has 34 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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) [2024-09-17 18:36:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:44,603 INFO L93 Difference]: Finished difference Result 60 states and 98 transitions. [2024-09-17 18:36:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 18:36:44,607 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 [2024-09-17 18:36:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:44,615 INFO L225 Difference]: With dead ends: 60 [2024-09-17 18:36:44,615 INFO L226 Difference]: Without dead ends: 30 [2024-09-17 18:36:44,618 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 [2024-09-17 18:36:44,621 INFO L434 NwaCegarLoop]: 42 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, 42 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:44,623 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:36:44,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-17 18:36:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-17 18:36:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-17 18:36:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2024-09-17 18:36:44,664 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 16 [2024-09-17 18:36:44,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:44,665 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2024-09-17 18:36:44,665 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) [2024-09-17 18:36:44,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:44,666 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2024-09-17 18:36:44,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-17 18:36:44,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:44,667 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:44,667 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 18:36:44,667 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:44,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:44,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1133972673, now seen corresponding path program 1 times [2024-09-17 18:36:44,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:44,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927545465] [2024-09-17 18:36:44,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:44,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:44,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:36:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:44,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:36:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:36:44,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927545465] [2024-09-17 18:36:44,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927545465] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:36:44,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:36:44,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:36:44,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528864216] [2024-09-17 18:36:44,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:36:44,984 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:36:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:44,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:36:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:36:44,986 INFO L87 Difference]: Start difference. First operand 30 states and 40 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) [2024-09-17 18:36:45,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:45,124 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-09-17 18:36:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:36:45,126 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 [2024-09-17 18:36:45,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:45,128 INFO L225 Difference]: With dead ends: 36 [2024-09-17 18:36:45,128 INFO L226 Difference]: Without dead ends: 34 [2024-09-17 18:36:45,130 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 [2024-09-17 18:36:45,132 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:45,132 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 110 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:36:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-17 18:36:45,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-17 18:36:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-17 18:36:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-09-17 18:36:45,155 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 16 [2024-09-17 18:36:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:45,156 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-09-17 18:36:45,156 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) [2024-09-17 18:36:45,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:45,157 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-09-17 18:36:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-17 18:36:45,157 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:45,158 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] [2024-09-17 18:36:45,158 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 18:36:45,158 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:45,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:45,158 INFO L85 PathProgramCache]: Analyzing trace with hash -295453008, now seen corresponding path program 1 times [2024-09-17 18:36:45,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:45,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791143376] [2024-09-17 18:36:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:45,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:45,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923431523] [2024-09-17 18:36:45,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:45,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:45,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:45,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:45,184 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 18:36:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:45,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 18:36:45,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:36:45,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:36:45,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791143376] [2024-09-17 18:36:45,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923431523] [2024-09-17 18:36:45,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923431523] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:36:45,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:36:45,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:36:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359483326] [2024-09-17 18:36:45,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:36:45,384 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:36:45,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:36:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:36:45,386 INFO L87 Difference]: Start difference. First operand 34 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, (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) [2024-09-17 18:36:45,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:45,473 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2024-09-17 18:36:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:36:45,474 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 [2024-09-17 18:36:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:45,476 INFO L225 Difference]: With dead ends: 53 [2024-09-17 18:36:45,476 INFO L226 Difference]: Without dead ends: 51 [2024-09-17 18:36:45,476 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:36:45,477 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:45,478 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 131 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:36:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-17 18:36:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2024-09-17 18:36:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-17 18:36:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-09-17 18:36:45,503 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 21 [2024-09-17 18:36:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:45,503 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-09-17 18:36:45,504 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) [2024-09-17 18:36:45,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-09-17 18:36:45,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-17 18:36:45,506 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:45,506 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] [2024-09-17 18:36:45,525 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-17 18:36:45,706 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:45,707 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:45,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:45,708 INFO L85 PathProgramCache]: Analyzing trace with hash 291539359, now seen corresponding path program 1 times [2024-09-17 18:36:45,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:45,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314091902] [2024-09-17 18:36:45,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:45,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:45,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080034269] [2024-09-17 18:36:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:45,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:45,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:45,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:45,729 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 18:36:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:45,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 18:36:45,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:36:45,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:36:45,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:45,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314091902] [2024-09-17 18:36:45,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:45,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080034269] [2024-09-17 18:36:45,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080034269] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:36:45,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:36:45,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:36:45,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83787601] [2024-09-17 18:36:45,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:36:45,857 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:36:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:36:45,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:36:45,858 INFO L87 Difference]: Start difference. First operand 41 states and 51 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) [2024-09-17 18:36:45,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:45,945 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2024-09-17 18:36:45,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:36:45,948 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 [2024-09-17 18:36:45,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:45,949 INFO L225 Difference]: With dead ends: 57 [2024-09-17 18:36:45,949 INFO L226 Difference]: Without dead ends: 55 [2024-09-17 18:36:45,950 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 [2024-09-17 18:36:45,951 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:45,954 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 128 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:36:45,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-17 18:36:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2024-09-17 18:36:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-17 18:36:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2024-09-17 18:36:45,976 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 26 [2024-09-17 18:36:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:45,977 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2024-09-17 18:36:45,977 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) [2024-09-17 18:36:45,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2024-09-17 18:36:45,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-17 18:36:45,980 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:45,980 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] [2024-09-17 18:36:45,997 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-17 18:36:46,184 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:46,185 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:46,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:46,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1228581936, now seen corresponding path program 1 times [2024-09-17 18:36:46,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:46,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055785350] [2024-09-17 18:36:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:46,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:46,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767449412] [2024-09-17 18:36:46,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:46,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:46,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:46,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:46,217 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 18:36:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:46,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 18:36:46,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 18:36:46,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:36:46,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:46,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055785350] [2024-09-17 18:36:46,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:46,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767449412] [2024-09-17 18:36:46,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767449412] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:36:46,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:36:46,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:36:46,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767430636] [2024-09-17 18:36:46,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:36:46,330 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:36:46,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:46,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:36:46,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:36:46,335 INFO L87 Difference]: Start difference. First operand 51 states and 66 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, (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) [2024-09-17 18:36:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:46,451 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2024-09-17 18:36:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:36:46,452 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, (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 31 [2024-09-17 18:36:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:46,453 INFO L225 Difference]: With dead ends: 65 [2024-09-17 18:36:46,453 INFO L226 Difference]: Without dead ends: 53 [2024-09-17 18:36:46,453 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:36:46,454 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:46,455 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 120 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:36:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-17 18:36:46,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-09-17 18:36:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-17 18:36:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-09-17 18:36:46,474 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 31 [2024-09-17 18:36:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:46,474 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-09-17 18:36:46,474 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, (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) [2024-09-17 18:36:46,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-09-17 18:36:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-17 18:36:46,477 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:46,478 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 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] [2024-09-17 18:36:46,496 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-17 18:36:46,678 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:46,679 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:46,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:46,679 INFO L85 PathProgramCache]: Analyzing trace with hash 149987423, now seen corresponding path program 1 times [2024-09-17 18:36:46,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:46,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106574437] [2024-09-17 18:36:46,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:46,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:46,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33000108] [2024-09-17 18:36:46,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:46,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:46,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:46,718 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:46,719 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 18:36:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:46,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-17 18:36:46,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-17 18:36:46,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-17 18:36:47,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:47,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106574437] [2024-09-17 18:36:47,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:47,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33000108] [2024-09-17 18:36:47,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33000108] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:47,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:36:47,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-09-17 18:36:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931768028] [2024-09-17 18:36:47,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:47,157 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 18:36:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 18:36:47,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:36:47,159 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-09-17 18:36:47,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:47,425 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2024-09-17 18:36:47,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 18:36:47,426 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 48 [2024-09-17 18:36:47,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:47,427 INFO L225 Difference]: With dead ends: 76 [2024-09-17 18:36:47,427 INFO L226 Difference]: Without dead ends: 74 [2024-09-17 18:36:47,428 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-09-17 18:36:47,428 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:47,429 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 133 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:36:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-17 18:36:47,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2024-09-17 18:36:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-17 18:36:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2024-09-17 18:36:47,453 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 48 [2024-09-17 18:36:47,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:47,453 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2024-09-17 18:36:47,453 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-09-17 18:36:47,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2024-09-17 18:36:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-17 18:36:47,455 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:47,455 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 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] [2024-09-17 18:36:47,471 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-17 18:36:47,659 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:47,660 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:47,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash -883401392, now seen corresponding path program 2 times [2024-09-17 18:36:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:47,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389883779] [2024-09-17 18:36:47,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:47,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:47,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745293907] [2024-09-17 18:36:47,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:36:47,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:47,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:47,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:36:47,688 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 18:36:47,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:36:47,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:36:47,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-17 18:36:47,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-17 18:36:47,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-17 18:36:48,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:48,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389883779] [2024-09-17 18:36:48,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:48,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745293907] [2024-09-17 18:36:48,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745293907] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:48,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:36:48,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-09-17 18:36:48,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720236157] [2024-09-17 18:36:48,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:48,112 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-17 18:36:48,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:48,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-17 18:36:48,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-09-17 18:36:48,114 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-17 18:36:48,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:48,437 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2024-09-17 18:36:48,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-17 18:36:48,437 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) Word has length 53 [2024-09-17 18:36:48,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:48,440 INFO L225 Difference]: With dead ends: 90 [2024-09-17 18:36:48,440 INFO L226 Difference]: Without dead ends: 85 [2024-09-17 18:36:48,441 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-09-17 18:36:48,442 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:48,442 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 265 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:36:48,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-17 18:36:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-09-17 18:36:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 43 states have (on average 1.069767441860465) internal successors, (46), 45 states have internal predecessors, (46), 27 states have call successors, (27), 13 states have call predecessors, (27), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-17 18:36:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2024-09-17 18:36:48,471 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 53 [2024-09-17 18:36:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:48,471 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2024-09-17 18:36:48,472 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-17 18:36:48,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2024-09-17 18:36:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-17 18:36:48,473 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:48,473 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 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] [2024-09-17 18:36:48,491 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-17 18:36:48,674 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-17 18:36:48,675 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:48,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash -612037408, now seen corresponding path program 1 times [2024-09-17 18:36:48,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:48,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91419046] [2024-09-17 18:36:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:48,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749952746] [2024-09-17 18:36:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:48,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:48,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:48,702 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) [2024-09-17 18:36:48,703 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 18:36:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:48,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-17 18:36:48,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-17 18:36:48,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-17 18:36:49,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91419046] [2024-09-17 18:36:49,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749952746] [2024-09-17 18:36:49,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749952746] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:49,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:36:49,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-17 18:36:49,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683404803] [2024-09-17 18:36:49,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:49,371 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-17 18:36:49,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:49,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-17 18:36:49,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-17 18:36:49,372 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-17 18:36:49,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:49,620 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2024-09-17 18:36:49,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 18:36:49,621 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 74 [2024-09-17 18:36:49,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:49,624 INFO L225 Difference]: With dead ends: 110 [2024-09-17 18:36:49,625 INFO L226 Difference]: Without dead ends: 108 [2024-09-17 18:36:49,625 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:36:49,626 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:49,626 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 170 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:36:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-17 18:36:49,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2024-09-17 18:36:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 57 states have internal predecessors, (58), 34 states have call successors, (34), 16 states have call predecessors, (34), 15 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-17 18:36:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2024-09-17 18:36:49,674 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 74 [2024-09-17 18:36:49,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:49,675 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2024-09-17 18:36:49,675 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-17 18:36:49,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2024-09-17 18:36:49,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-17 18:36:49,679 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:49,680 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 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] [2024-09-17 18:36:49,698 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-17 18:36:49,880 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:49,880 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:49,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:49,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1655042001, now seen corresponding path program 1 times [2024-09-17 18:36:49,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:49,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381841001] [2024-09-17 18:36:49,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:49,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:49,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096797981] [2024-09-17 18:36:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:49,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:49,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:49,928 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) [2024-09-17 18:36:49,931 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-17 18:36:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:49,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-17 18:36:49,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-17 18:36:50,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-17 18:36:50,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:50,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381841001] [2024-09-17 18:36:50,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:50,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096797981] [2024-09-17 18:36:50,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096797981] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:50,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:36:50,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2024-09-17 18:36:50,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011460250] [2024-09-17 18:36:50,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:50,495 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-17 18:36:50,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:50,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-17 18:36:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-09-17 18:36:50,496 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2024-09-17 18:36:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:50,901 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2024-09-17 18:36:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-17 18:36:50,902 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) Word has length 79 [2024-09-17 18:36:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:50,903 INFO L225 Difference]: With dead ends: 122 [2024-09-17 18:36:50,903 INFO L226 Difference]: Without dead ends: 113 [2024-09-17 18:36:50,904 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-09-17 18:36:50,904 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:50,904 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 336 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:36:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-17 18:36:50,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2024-09-17 18:36:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 60 states have (on average 1.05) internal successors, (63), 62 states have internal predecessors, (63), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-17 18:36:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2024-09-17 18:36:50,947 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 79 [2024-09-17 18:36:50,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:50,947 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2024-09-17 18:36:50,947 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2024-09-17 18:36:50,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2024-09-17 18:36:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-17 18:36:50,949 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:50,949 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:50,965 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-17 18:36:51,153 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:51,154 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:51,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:51,154 INFO L85 PathProgramCache]: Analyzing trace with hash -875039120, now seen corresponding path program 3 times [2024-09-17 18:36:51,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:51,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810825681] [2024-09-17 18:36:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:51,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:51,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722488206] [2024-09-17 18:36:51,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:36:51,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:51,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:51,194 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) [2024-09-17 18:36:51,195 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-17 18:36:51,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-17 18:36:51,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:36:51,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-17 18:36:51,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-17 18:36:51,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:51,992 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-17 18:36:51,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:51,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810825681] [2024-09-17 18:36:51,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:51,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722488206] [2024-09-17 18:36:51,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722488206] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:51,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:36:51,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-17 18:36:51,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618610474] [2024-09-17 18:36:51,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:51,993 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-17 18:36:51,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:51,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-17 18:36:51,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-09-17 18:36:51,994 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2024-09-17 18:36:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:52,837 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2024-09-17 18:36:52,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-17 18:36:52,840 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) Word has length 85 [2024-09-17 18:36:52,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:52,841 INFO L225 Difference]: With dead ends: 133 [2024-09-17 18:36:52,841 INFO L226 Difference]: Without dead ends: 115 [2024-09-17 18:36:52,842 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-09-17 18:36:52,842 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:52,842 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 271 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 18:36:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-17 18:36:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-17 18:36:52,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 27 states have call successors, (27), 20 states have call predecessors, (27), 19 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-17 18:36:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 120 transitions. [2024-09-17 18:36:52,879 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 120 transitions. Word has length 85 [2024-09-17 18:36:52,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:52,880 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 120 transitions. [2024-09-17 18:36:52,880 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2024-09-17 18:36:52,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 120 transitions. [2024-09-17 18:36:52,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-17 18:36:52,885 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:52,885 INFO L216 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:52,893 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-17 18:36:53,085 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:53,086 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:53,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2107835968, now seen corresponding path program 2 times [2024-09-17 18:36:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:53,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007961035] [2024-09-17 18:36:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:53,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407967117] [2024-09-17 18:36:53,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:36:53,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:53,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:53,118 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) [2024-09-17 18:36:53,123 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-17 18:36:53,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:36:53,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:36:53,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-17 18:36:53,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 86 proven. 58 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-09-17 18:36:53,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2024-09-17 18:36:54,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:54,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007961035] [2024-09-17 18:36:54,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:54,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407967117] [2024-09-17 18:36:54,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407967117] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:54,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:36:54,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2024-09-17 18:36:54,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319777560] [2024-09-17 18:36:54,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:54,354 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-17 18:36:54,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:54,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-17 18:36:54,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-09-17 18:36:54,355 INFO L87 Difference]: Start difference. First operand 113 states and 120 transitions. Second operand has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-17 18:36:54,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:54,909 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2024-09-17 18:36:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-17 18:36:54,910 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) Word has length 128 [2024-09-17 18:36:54,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:54,911 INFO L225 Difference]: With dead ends: 136 [2024-09-17 18:36:54,912 INFO L226 Difference]: Without dead ends: 134 [2024-09-17 18:36:54,913 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-09-17 18:36:54,913 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:54,914 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 299 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-17 18:36:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-09-17 18:36:54,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2024-09-17 18:36:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 27 states have call successors, (27), 21 states have call predecessors, (27), 20 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-17 18:36:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2024-09-17 18:36:54,961 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 128 [2024-09-17 18:36:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:54,962 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2024-09-17 18:36:54,962 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-17 18:36:54,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2024-09-17 18:36:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-17 18:36:54,965 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:54,965 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:54,981 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-17 18:36:55,169 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-17 18:36:55,170 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:55,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:55,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1340142287, now seen corresponding path program 2 times [2024-09-17 18:36:55,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:55,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422516392] [2024-09-17 18:36:55,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:55,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:55,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504157463] [2024-09-17 18:36:55,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:36:55,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:55,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:55,222 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) [2024-09-17 18:36:55,223 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-17 18:36:55,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:36:55,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:36:55,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-17 18:36:55,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 88 proven. 61 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-17 18:36:55,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 88 proven. 61 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-17 18:36:56,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:56,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422516392] [2024-09-17 18:36:56,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:56,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504157463] [2024-09-17 18:36:56,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504157463] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:56,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:36:56,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2024-09-17 18:36:56,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821870370] [2024-09-17 18:36:56,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:56,439 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-17 18:36:56,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:56,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-17 18:36:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-09-17 18:36:56,440 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) [2024-09-17 18:36:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:36:57,182 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2024-09-17 18:36:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-17 18:36:57,183 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) Word has length 133 [2024-09-17 18:36:57,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:36:57,184 INFO L225 Difference]: With dead ends: 149 [2024-09-17 18:36:57,184 INFO L226 Difference]: Without dead ends: 145 [2024-09-17 18:36:57,185 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2024-09-17 18:36:57,185 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 14 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-17 18:36:57,186 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 464 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-17 18:36:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-09-17 18:36:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2024-09-17 18:36:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 27 states have call successors, (27), 22 states have call predecessors, (27), 20 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-17 18:36:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2024-09-17 18:36:57,224 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 133 [2024-09-17 18:36:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:36:57,224 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2024-09-17 18:36:57,224 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) [2024-09-17 18:36:57,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2024-09-17 18:36:57,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-09-17 18:36:57,226 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:36:57,226 INFO L216 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:36:57,243 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-17 18:36:57,426 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-17 18:36:57,427 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:36:57,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:36:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash 127442784, now seen corresponding path program 1 times [2024-09-17 18:36:57,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:36:57,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973078] [2024-09-17 18:36:57,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:57,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:36:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:36:57,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42713361] [2024-09-17 18:36:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:36:57,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:36:57,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:36:57,482 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) [2024-09-17 18:36:57,484 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-17 18:36:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:36:57,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-17 18:36:57,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:36:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-09-17 18:36:57,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:36:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-09-17 18:36:58,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:36:58,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973078] [2024-09-17 18:36:58,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:36:58,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42713361] [2024-09-17 18:36:58,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42713361] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:36:58,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:36:58,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-09-17 18:36:58,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423133451] [2024-09-17 18:36:58,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:36:58,764 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-17 18:36:58,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:36:58,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-17 18:36:58,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-09-17 18:36:58,765 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) [2024-09-17 18:37:03,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:37:07,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:37:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:07,991 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2024-09-17 18:37:07,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-17 18:37:07,992 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) Word has length 138 [2024-09-17 18:37:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:07,992 INFO L225 Difference]: With dead ends: 134 [2024-09-17 18:37:07,992 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 18:37:07,993 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-17 18:37:07,994 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:07,994 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 348 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 260 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2024-09-17 18:37:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 18:37:07,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 18:37:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 18:37:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 18:37:07,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2024-09-17 18:37:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:07,995 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 18:37:07,995 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) [2024-09-17 18:37:07,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 18:37:07,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 18:37:07,998 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 18:37:08,013 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-17 18:37:08,199 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:08,202 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:08,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 18:37:29,142 WARN L293 SmtUtils]: Spent 19.99s on a formula simplification. DAG size of input: 192 DAG size of output: 62 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-17 18:37:52,089 WARN L293 SmtUtils]: Spent 22.94s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-17 18:38:24,706 WARN L293 SmtUtils]: Spent 32.60s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-17 18:39:01,728 WARN L293 SmtUtils]: Spent 37.01s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-17 18:39:16,738 WARN L293 SmtUtils]: Spent 14.83s on a formula simplification. DAG size of input: 176 DAG size of output: 43 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-17 18:39:30,110 WARN L293 SmtUtils]: Spent 13.37s on a formula simplification. DAG size of input: 206 DAG size of output: 63 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-17 18:39:43,109 WARN L293 SmtUtils]: Spent 13.00s on a formula simplification. DAG size of input: 175 DAG size of output: 55 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-17 18:40:17,830 WARN L293 SmtUtils]: Spent 34.60s on a formula simplification. DAG size of input: 206 DAG size of output: 63 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-17 18:40:30,322 WARN L293 SmtUtils]: Spent 12.49s on a formula simplification. DAG size of input: 177 DAG size of output: 56 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-17 18:41:05,999 WARN L293 SmtUtils]: Spent 35.66s on a formula simplification. DAG size of input: 175 DAG size of output: 55 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)