./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.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 27b49876 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/bresenham-ll_valuebound2.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 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 --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-27b4987-m [2024-09-21 11:44:20,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 11:44:20,192 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 11:44:20,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 11:44:20,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 11:44:20,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 11:44:20,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 11:44:20,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 11:44:20,221 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 11:44:20,222 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 11:44:20,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 11:44:20,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 11:44:20,223 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 11:44:20,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 11:44:20,225 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 11:44:20,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 11:44:20,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 11:44:20,226 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 11:44:20,226 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 11:44:20,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 11:44:20,226 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 11:44:20,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 11:44:20,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 11:44:20,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 11:44:20,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 11:44:20,231 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 11:44:20,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 11:44:20,231 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 11:44:20,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 11:44:20,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 11:44:20,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 11:44:20,232 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 11:44:20,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:44:20,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 11:44:20,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 11:44:20,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 11:44:20,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 11:44:20,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 11:44:20,233 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 11:44:20,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 11:44:20,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 11:44:20,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 11:44:20,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 11:44:20,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 11:44:20,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 11:44:20,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 11:44:20,478 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 11:44:20,479 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 11:44:20,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2024-09-21 11:44:21,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 11:44:21,870 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 11:44:21,870 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2024-09-21 11:44:21,876 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3949ef14d/c25963064de146298cd7a051996b8b59/FLAGf43d69bfc [2024-09-21 11:44:21,885 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3949ef14d/c25963064de146298cd7a051996b8b59 [2024-09-21 11:44:21,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 11:44:21,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 11:44:21,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 11:44:21,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 11:44:21,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 11:44:21,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:44:21" (1/1) ... [2024-09-21 11:44:21,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e61c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:21, skipping insertion in model container [2024-09-21 11:44:21,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:44:21" (1/1) ... [2024-09-21 11:44:21,907 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 11:44:22,028 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/bresenham-ll_valuebound2.c[597,610] [2024-09-21 11:44:22,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:44:22,052 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 11:44:22,090 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/bresenham-ll_valuebound2.c[597,610] [2024-09-21 11:44:22,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:44:22,125 INFO L204 MainTranslator]: Completed translation [2024-09-21 11:44:22,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22 WrapperNode [2024-09-21 11:44:22,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 11:44:22,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 11:44:22,134 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 11:44:22,134 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 11:44:22,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,154 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 11:44:22,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 11:44:22,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 11:44:22,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 11:44:22,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 11:44:22,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,164 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,180 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]. [2024-09-21 11:44:22,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,186 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 11:44:22,201 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 11:44:22,201 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 11:44:22,202 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 11:44:22,202 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (1/1) ... [2024-09-21 11:44:22,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:44:22,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:22,230 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) [2024-09-21 11:44:22,232 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 [2024-09-21 11:44:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 11:44:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-21 11:44:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-21 11:44:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 11:44:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 11:44:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 11:44:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 11:44:22,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 11:44:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 11:44:22,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 11:44:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 11:44:22,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 11:44:22,319 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 11:44:22,321 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 11:44:22,462 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-21 11:44:22,462 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 11:44:22,488 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 11:44:22,488 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 11:44:22,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:22 BoogieIcfgContainer [2024-09-21 11:44:22,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 11:44:22,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 11:44:22,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 11:44:22,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 11:44:22,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:44:21" (1/3) ... [2024-09-21 11:44:22,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d59c39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:44:22, skipping insertion in model container [2024-09-21 11:44:22,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:22" (2/3) ... [2024-09-21 11:44:22,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d59c39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:44:22, skipping insertion in model container [2024-09-21 11:44:22,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:22" (3/3) ... [2024-09-21 11:44:22,497 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound2.c [2024-09-21 11:44:22,509 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 11:44:22,509 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 11:44:22,554 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 11:44:22,559 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;@5efb5141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 11:44:22,559 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 11:44:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-21 11:44:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-21 11:44:22,568 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:22,568 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:22,569 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:22,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:22,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1345059158, now seen corresponding path program 1 times [2024-09-21 11:44:22,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:22,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644305859] [2024-09-21 11:44:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:22,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:22,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:22,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:44:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:44:22,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:22,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644305859] [2024-09-21 11:44:22,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644305859] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:22,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:44:22,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 11:44:22,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108202459] [2024-09-21 11:44:22,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:22,719 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 11:44:22,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:22,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 11:44:22,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:44:22,735 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-21 11:44:22,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:22,752 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2024-09-21 11:44:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 11:44:22,754 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-21 11:44:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:22,759 INFO L225 Difference]: With dead ends: 54 [2024-09-21 11:44:22,759 INFO L226 Difference]: Without dead ends: 26 [2024-09-21 11:44:22,761 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:44:22,763 INFO L434 NwaCegarLoop]: 31 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, 31 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 [2024-09-21 11:44:22,766 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:44:22,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-21 11:44:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-21 11:44:22,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-21 11:44:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-21 11:44:22,797 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 22 [2024-09-21 11:44:22,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:22,797 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-21 11:44:22,798 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-21 11:44:22,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:22,799 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-21 11:44:22,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-21 11:44:22,802 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:22,802 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:22,803 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 11:44:22,803 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:22,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:22,803 INFO L85 PathProgramCache]: Analyzing trace with hash 745253850, now seen corresponding path program 1 times [2024-09-21 11:44:22,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:22,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141359213] [2024-09-21 11:44:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:22,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:22,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431743521] [2024-09-21 11:44:22,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:22,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:22,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:22,852 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) [2024-09-21 11:44:22,856 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 11:44:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:22,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-21 11:44:22,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:44:23,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:44:23,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:23,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141359213] [2024-09-21 11:44:23,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:23,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431743521] [2024-09-21 11:44:23,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431743521] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:23,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:44:23,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-21 11:44:23,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82401981] [2024-09-21 11:44:23,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:23,034 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:44:23,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:23,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:44:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-21 11:44:23,035 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-21 11:44:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:23,115 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-09-21 11:44:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 11:44:23,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2024-09-21 11:44:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:23,117 INFO L225 Difference]: With dead ends: 38 [2024-09-21 11:44:23,117 INFO L226 Difference]: Without dead ends: 36 [2024-09-21 11:44:23,118 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-21 11:44:23,119 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:23,119 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:44:23,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-21 11:44:23,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2024-09-21 11:44:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 11:44:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-21 11:44:23,130 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2024-09-21 11:44:23,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:23,130 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-21 11:44:23,131 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-21 11:44:23,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:23,131 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-21 11:44:23,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-21 11:44:23,132 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:23,132 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:23,148 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 11:44:23,336 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:23,337 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:23,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:23,339 INFO L85 PathProgramCache]: Analyzing trace with hash -291852925, now seen corresponding path program 1 times [2024-09-21 11:44:23,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:23,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505664588] [2024-09-21 11:44:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:23,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:23,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:23,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:23,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:44:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:23,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:44:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 11:44:23,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:23,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505664588] [2024-09-21 11:44:23,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505664588] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:44:23,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000746753] [2024-09-21 11:44:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:23,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:23,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:23,646 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) [2024-09-21 11:44:23,674 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 11:44:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:23,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-21 11:44:23,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:44:23,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:44:23,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000746753] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:23,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 11:44:23,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-09-21 11:44:23,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598202525] [2024-09-21 11:44:23,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:23,803 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:44:23,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:23,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:44:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-09-21 11:44:23,804 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 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) [2024-09-21 11:44:23,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:23,865 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-09-21 11:44:23,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 11:44:23,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 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 29 [2024-09-21 11:44:23,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:23,866 INFO L225 Difference]: With dead ends: 42 [2024-09-21 11:44:23,866 INFO L226 Difference]: Without dead ends: 34 [2024-09-21 11:44:23,867 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-09-21 11:44:23,868 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:23,868 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:44:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-21 11:44:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-09-21 11:44:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 11:44:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-09-21 11:44:23,873 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2024-09-21 11:44:23,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:23,873 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-09-21 11:44:23,873 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 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) [2024-09-21 11:44:23,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:23,873 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-09-21 11:44:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-21 11:44:23,874 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:23,874 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-21 11:44:23,887 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-21 11:44:24,074 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:24,076 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:24,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:24,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1466394034, now seen corresponding path program 1 times [2024-09-21 11:44:24,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:24,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746124909] [2024-09-21 11:44:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:24,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:24,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604673262] [2024-09-21 11:44:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:24,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:24,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:24,094 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) [2024-09-21 11:44:24,100 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 11:44:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:24,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-21 11:44:24,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:44:24,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:44:24,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746124909] [2024-09-21 11:44:24,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604673262] [2024-09-21 11:44:24,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604673262] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:24,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:44:24,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 16 [2024-09-21 11:44:24,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306215660] [2024-09-21 11:44:24,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:24,555 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-21 11:44:24,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:24,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-21 11:44:24,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-09-21 11:44:24,556 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-21 11:44:24,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:24,995 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2024-09-21 11:44:24,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-21 11:44:24,996 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 31 [2024-09-21 11:44:24,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:24,996 INFO L225 Difference]: With dead ends: 64 [2024-09-21 11:44:24,997 INFO L226 Difference]: Without dead ends: 36 [2024-09-21 11:44:24,997 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2024-09-21 11:44:24,998 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:24,998 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 153 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:44:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-21 11:44:25,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-21 11:44:25,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 11:44:25,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-09-21 11:44:25,005 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 31 [2024-09-21 11:44:25,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:25,005 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-09-21 11:44:25,005 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-21 11:44:25,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-09-21 11:44:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-21 11:44:25,006 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:25,006 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:25,019 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-21 11:44:25,210 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:25,212 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:25,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash -697702451, now seen corresponding path program 1 times [2024-09-21 11:44:25,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:25,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348091548] [2024-09-21 11:44:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:25,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:25,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601120953] [2024-09-21 11:44:25,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:25,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:25,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:25,233 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) [2024-09-21 11:44:25,234 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 11:44:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:25,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-21 11:44:25,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-21 11:44:25,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-21 11:44:26,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:26,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348091548] [2024-09-21 11:44:26,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601120953] [2024-09-21 11:44:26,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601120953] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:26,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:44:26,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2024-09-21 11:44:26,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331366943] [2024-09-21 11:44:26,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:26,088 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-21 11:44:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-21 11:44:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-21 11:44:26,089 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-21 11:44:27,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:27,537 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2024-09-21 11:44:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-21 11:44:27,538 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 38 [2024-09-21 11:44:27,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:27,539 INFO L225 Difference]: With dead ends: 54 [2024-09-21 11:44:27,539 INFO L226 Difference]: Without dead ends: 46 [2024-09-21 11:44:27,539 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2024-09-21 11:44:27,540 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:27,540 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 169 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-21 11:44:27,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-21 11:44:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-09-21 11:44:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-21 11:44:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2024-09-21 11:44:27,568 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 38 [2024-09-21 11:44:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:27,568 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2024-09-21 11:44:27,568 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-21 11:44:27,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:27,569 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2024-09-21 11:44:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-21 11:44:27,569 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:27,570 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:27,582 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-21 11:44:27,770 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:27,770 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:27,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1873598157, now seen corresponding path program 1 times [2024-09-21 11:44:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:27,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921561973] [2024-09-21 11:44:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:27,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:27,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:27,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:27,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:44:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:27,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:44:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:27,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:44:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:27,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 11:44:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:27,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:44:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-21 11:44:27,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:27,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921561973] [2024-09-21 11:44:27,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921561973] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:44:27,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091687911] [2024-09-21 11:44:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:27,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:27,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:27,870 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) [2024-09-21 11:44:27,871 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 11:44:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:27,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-21 11:44:27,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-21 11:44:27,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-21 11:44:27,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091687911] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:27,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:44:27,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-09-21 11:44:27,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102756374] [2024-09-21 11:44:27,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:27,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:44:27,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:27,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:44:27,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-21 11:44:27,982 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-21 11:44:28,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:28,091 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2024-09-21 11:44:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-21 11:44:28,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 56 [2024-09-21 11:44:28,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:28,093 INFO L225 Difference]: With dead ends: 80 [2024-09-21 11:44:28,093 INFO L226 Difference]: Without dead ends: 61 [2024-09-21 11:44:28,094 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-21 11:44:28,094 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:28,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 114 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:44:28,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-21 11:44:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-09-21 11:44:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 12 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-21 11:44:28,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2024-09-21 11:44:28,121 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 56 [2024-09-21 11:44:28,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:28,121 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2024-09-21 11:44:28,121 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-21 11:44:28,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:28,122 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2024-09-21 11:44:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-21 11:44:28,124 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:28,125 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:28,153 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-21 11:44:28,325 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-21 11:44:28,326 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:28,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:28,326 INFO L85 PathProgramCache]: Analyzing trace with hash 68159823, now seen corresponding path program 2 times [2024-09-21 11:44:28,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:28,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670831547] [2024-09-21 11:44:28,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:28,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:28,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:28,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:28,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:44:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:28,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:44:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:28,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:44:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:28,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 11:44:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:28,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:44:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-21 11:44:28,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:28,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670831547] [2024-09-21 11:44:28,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670831547] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:44:28,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895789387] [2024-09-21 11:44:28,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:44:28,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:28,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:28,548 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) [2024-09-21 11:44:28,549 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-21 11:44:28,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:44:28,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:44:28,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-21 11:44:28,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-21 11:44:28,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-21 11:44:28,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895789387] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:28,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:44:28,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-09-21 11:44:28,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448202082] [2024-09-21 11:44:28,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:28,974 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-21 11:44:28,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:28,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-21 11:44:28,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2024-09-21 11:44:28,975 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 14 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-09-21 11:44:29,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:29,487 INFO L93 Difference]: Finished difference Result 84 states and 100 transitions. [2024-09-21 11:44:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-21 11:44:29,487 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 14 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 56 [2024-09-21 11:44:29,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:29,488 INFO L225 Difference]: With dead ends: 84 [2024-09-21 11:44:29,488 INFO L226 Difference]: Without dead ends: 78 [2024-09-21 11:44:29,489 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1195, Unknown=0, NotChecked=0, Total=1482 [2024-09-21 11:44:29,489 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 11 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:29,490 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 182 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:44:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-21 11:44:29,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70. [2024-09-21 11:44:29,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 14 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-21 11:44:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2024-09-21 11:44:29,517 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 56 [2024-09-21 11:44:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:29,517 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2024-09-21 11:44:29,518 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 14 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-09-21 11:44:29,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2024-09-21 11:44:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-21 11:44:29,519 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:29,519 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:29,534 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-21 11:44:29,723 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:29,723 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:29,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:29,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1701302009, now seen corresponding path program 3 times [2024-09-21 11:44:29,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:29,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769032412] [2024-09-21 11:44:29,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:29,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:30,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:30,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:30,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:44:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:30,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:44:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:30,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:44:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:30,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 11:44:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:30,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:44:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:30,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:44:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-21 11:44:30,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:30,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769032412] [2024-09-21 11:44:30,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769032412] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:44:30,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695799571] [2024-09-21 11:44:30,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:44:30,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:30,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:30,112 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) [2024-09-21 11:44:30,118 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-21 11:44:30,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-21 11:44:30,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:44:30,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-21 11:44:30,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-09-21 11:44:31,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-21 11:44:33,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695799571] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:33,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:44:33,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 12] total 37 [2024-09-21 11:44:33,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376761597] [2024-09-21 11:44:33,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:33,967 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-21 11:44:33,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:33,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-21 11:44:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2024-09-21 11:44:33,969 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 37 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 13 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) [2024-09-21 11:45:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:45:01,931 INFO L93 Difference]: Finished difference Result 95 states and 116 transitions. [2024-09-21 11:45:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-21 11:45:01,931 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 13 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) Word has length 65 [2024-09-21 11:45:01,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:45:01,932 INFO L225 Difference]: With dead ends: 95 [2024-09-21 11:45:01,932 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 11:45:01,934 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=752, Invalid=3800, Unknown=4, NotChecked=0, Total=4556 [2024-09-21 11:45:01,935 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:45:01,935 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 435 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-09-21 11:45:01,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 11:45:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 11:45:01,935 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) [2024-09-21 11:45:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 11:45:01,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2024-09-21 11:45:01,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:45:01,936 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 11:45:01,936 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 13 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) [2024-09-21 11:45:01,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:45:01,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 11:45:01,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 11:45:01,938 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 11:45:01,950 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-21 11:45:02,142 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:45:02,145 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2024-09-21 11:45:02,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 11:45:05,598 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 11:45:05,613 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-21 11:45:05,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:45:05 BoogieIcfgContainer [2024-09-21 11:45:05,624 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 11:45:05,624 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 11:45:05,624 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 11:45:05,624 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 11:45:05,624 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:22" (3/4) ... [2024-09-21 11:45:05,630 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 11:45:05,669 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 11:45:05,670 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 11:45:05,670 INFO L158 Benchmark]: Toolchain (without parser) took 43782.26ms. Allocated memory was 178.3MB in the beginning and 331.4MB in the end (delta: 153.1MB). Free memory was 105.9MB in the beginning and 239.7MB in the end (delta: -133.8MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2024-09-21 11:45:05,670 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:45:05,670 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.59ms. Allocated memory is still 178.3MB. Free memory was 105.7MB in the beginning and 146.5MB in the end (delta: -40.9MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2024-09-21 11:45:05,671 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.51ms. Allocated memory is still 178.3MB. Free memory was 146.5MB in the beginning and 145.5MB in the end (delta: 971.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:45:05,671 INFO L158 Benchmark]: Boogie Preprocessor took 33.03ms. Allocated memory is still 178.3MB. Free memory was 145.5MB in the beginning and 143.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:45:05,671 INFO L158 Benchmark]: RCFGBuilder took 288.00ms. Allocated memory is still 274.7MB. Free memory was 246.4MB in the beginning and 231.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-21 11:45:05,671 INFO L158 Benchmark]: TraceAbstraction took 43132.42ms. Allocated memory was 274.7MB in the beginning and 331.4MB in the end (delta: 56.6MB). Free memory was 231.7MB in the beginning and 241.8MB in the end (delta: -10.1MB). Peak memory consumption was 183.8MB. Max. memory is 16.1GB. [2024-09-21 11:45:05,671 INFO L158 Benchmark]: Witness Printer took 45.72ms. Allocated memory is still 331.4MB. Free memory was 241.8MB in the beginning and 239.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:45:05,673 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.59ms. Allocated memory is still 178.3MB. Free memory was 105.7MB in the beginning and 146.5MB in the end (delta: -40.9MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.51ms. Allocated memory is still 178.3MB. Free memory was 146.5MB in the beginning and 145.5MB in the end (delta: 971.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.03ms. Allocated memory is still 178.3MB. Free memory was 145.5MB in the beginning and 143.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 288.00ms. Allocated memory is still 274.7MB. Free memory was 246.4MB in the beginning and 231.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 43132.42ms. Allocated memory was 274.7MB in the beginning and 331.4MB in the end (delta: 56.6MB). Free memory was 231.7MB in the beginning and 241.8MB in the end (delta: -10.1MB). Peak memory consumption was 183.8MB. Max. memory is 16.1GB. * Witness Printer took 45.72ms. Allocated memory is still 331.4MB. Free memory was 241.8MB in the beginning and 239.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.6s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 30.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 1260 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1084 mSDsCounter, 121 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1813 IncrementalHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 121 mSolverCounterUnsat, 176 mSDtfsCounter, 1813 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 708 GetRequests, 521 SyntacticMatches, 3 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 31.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=7, InterpolantAutomatonStates: 130, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 616 NumberOfCodeBlocks, 589 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 754 ConstructedInterpolants, 3 QuantifiedInterpolants, 4531 SizeOfPredicates, 23 NumberOfNonLiveVariables, 732 ConjunctsInSsa, 148 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 544/714 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((X <= 2) && ((((long long) Y * 2) + (2 * ((__int128) Y * x))) == (((((__int128) X * y) * 2) + X) + v))) && (0 <= Y)) && (0 <= X)) && (Y <= 2)) - ProcedureContractResult [Line: 10]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-21 11:45:05,737 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE