./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound10.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_valuebound10.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4018f196b5be3ea7c518259557cd649a90434a9cacf1ef4108caf962c0feb788 --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 11:44:09,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 11:44:09,191 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 11:44:09,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 11:44:09,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 11:44:09,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 11:44:09,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 11:44:09,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 11:44:09,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 11:44:09,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 11:44:09,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 11:44:09,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 11:44:09,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 11:44:09,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 11:44:09,226 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 11:44:09,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 11:44:09,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 11:44:09,228 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 11:44:09,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 11:44:09,228 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 11:44:09,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 11:44:09,229 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 11:44:09,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 11:44:09,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 11:44:09,230 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 11:44:09,230 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 11:44:09,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 11:44:09,230 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 11:44:09,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 11:44:09,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 11:44:09,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 11:44:09,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 11:44:09,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:44:09,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 11:44:09,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 11:44:09,231 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 11:44:09,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 11:44:09,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 11:44:09,232 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 11:44:09,232 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 11:44:09,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 11:44:09,233 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 11:44:09,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4018f196b5be3ea7c518259557cd649a90434a9cacf1ef4108caf962c0feb788 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 11:44:09,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 11:44:09,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 11:44:09,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 11:44:09,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 11:44:09,442 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 11:44:09,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound10.c [2024-09-21 11:44:10,756 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 11:44:10,891 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 11:44:10,892 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound10.c [2024-09-21 11:44:10,897 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/30eae2fd0/b6d496c937be4b5c896afff5905d9512/FLAG0d9763d4f [2024-09-21 11:44:10,910 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/30eae2fd0/b6d496c937be4b5c896afff5905d9512 [2024-09-21 11:44:10,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 11:44:10,914 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 11:44:10,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 11:44:10,916 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 11:44:10,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 11:44:10,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:44:10" (1/1) ... [2024-09-21 11:44:10,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b35a74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:10, skipping insertion in model container [2024-09-21 11:44:10,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:44:10" (1/1) ... [2024-09-21 11:44:10,938 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 11:44:11,064 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_valuebound10.c[597,610] [2024-09-21 11:44:11,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:44:11,083 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 11:44:11,091 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_valuebound10.c[597,610] [2024-09-21 11:44:11,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:44:11,107 INFO L204 MainTranslator]: Completed translation [2024-09-21 11:44:11,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11 WrapperNode [2024-09-21 11:44:11,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 11:44:11,123 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 11:44:11,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 11:44:11,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 11:44:11,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,141 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 11:44:11,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 11:44:11,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 11:44:11,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 11:44:11,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 11:44:11,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,153 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,161 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 11:44:11,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,166 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 11:44:11,168 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 11:44:11,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 11:44:11,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 11:44:11,169 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (1/1) ... [2024-09-21 11:44:11,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:44:11,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:11,194 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 11:44:11,196 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 11:44:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 11:44:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-21 11:44:11,230 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-21 11:44:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 11:44:11,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 11:44:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 11:44:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 11:44:11,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 11:44:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 11:44:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 11:44:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 11:44:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 11:44:11,290 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 11:44:11,292 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 11:44:11,422 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-21 11:44:11,422 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 11:44:11,437 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 11:44:11,437 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 11:44:11,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:11 BoogieIcfgContainer [2024-09-21 11:44:11,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 11:44:11,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 11:44:11,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 11:44:11,441 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 11:44:11,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:44:10" (1/3) ... [2024-09-21 11:44:11,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b77d2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:44:11, skipping insertion in model container [2024-09-21 11:44:11,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:11" (2/3) ... [2024-09-21 11:44:11,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b77d2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:44:11, skipping insertion in model container [2024-09-21 11:44:11,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:11" (3/3) ... [2024-09-21 11:44:11,443 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound10.c [2024-09-21 11:44:11,457 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 11:44:11,457 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 11:44:11,496 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 11:44:11,501 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;@18d08cf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 11:44:11,501 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 11:44:11,504 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 11:44:11,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-21 11:44:11,509 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:11,509 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 11:44:11,510 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:11,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:11,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1345059158, now seen corresponding path program 1 times [2024-09-21 11:44:11,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:11,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750731070] [2024-09-21 11:44:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:11,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:11,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:11,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:11,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:44:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:11,667 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 11:44:11,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:11,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750731070] [2024-09-21 11:44:11,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750731070] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:11,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:44:11,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 11:44:11,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154254025] [2024-09-21 11:44:11,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:11,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 11:44:11,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:11,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 11:44:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:44:11,706 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 11:44:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:11,730 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2024-09-21 11:44:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 11:44:11,732 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 11:44:11,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:11,737 INFO L225 Difference]: With dead ends: 54 [2024-09-21 11:44:11,738 INFO L226 Difference]: Without dead ends: 26 [2024-09-21 11:44:11,740 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 11:44:11,743 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 11:44:11,745 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 11:44:11,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-21 11:44:11,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-21 11:44:11,778 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 11:44:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-21 11:44:11,781 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 22 [2024-09-21 11:44:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:11,781 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-21 11:44:11,781 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 11:44:11,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-21 11:44:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-21 11:44:11,783 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:11,783 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 11:44:11,784 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 11:44:11,784 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:11,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:11,784 INFO L85 PathProgramCache]: Analyzing trace with hash 745253850, now seen corresponding path program 1 times [2024-09-21 11:44:11,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:11,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631950954] [2024-09-21 11:44:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:11,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:11,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99232329] [2024-09-21 11:44:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:11,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:11,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:11,821 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 11:44:11,824 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 11:44:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:11,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-21 11:44:11,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:11,987 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 11:44:11,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:44:11,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631950954] [2024-09-21 11:44:11,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99232329] [2024-09-21 11:44:11,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99232329] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:11,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:44:11,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-21 11:44:11,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959756712] [2024-09-21 11:44:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:11,994 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:44:11,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:11,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:44:11,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-21 11:44:11,995 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 11:44:12,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:12,076 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-09-21 11:44:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 11:44:12,076 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 11:44:12,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:12,078 INFO L225 Difference]: With dead ends: 38 [2024-09-21 11:44:12,078 INFO L226 Difference]: Without dead ends: 36 [2024-09-21 11:44:12,078 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-21 11:44:12,079 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 11:44:12,080 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 11:44:12,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-21 11:44:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2024-09-21 11:44:12,086 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 11:44:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-21 11:44:12,087 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2024-09-21 11:44:12,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:12,088 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-21 11:44:12,088 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 11:44:12,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:12,089 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-21 11:44:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-21 11:44:12,089 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:12,090 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 11:44:12,102 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-21 11:44:12,294 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 11:44:12,294 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:12,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:12,295 INFO L85 PathProgramCache]: Analyzing trace with hash -291852925, now seen corresponding path program 1 times [2024-09-21 11:44:12,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:12,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807682321] [2024-09-21 11:44:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:12,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:12,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:12,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:12,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:44:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:12,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:44:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:12,540 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 11:44:12,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:12,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807682321] [2024-09-21 11:44:12,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807682321] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:44:12,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113764498] [2024-09-21 11:44:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:12,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:12,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:12,543 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 11:44:12,544 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 11:44:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:12,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-21 11:44:12,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:12,688 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 11:44:12,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:44:12,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113764498] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:12,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 11:44:12,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-09-21 11:44:12,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155753585] [2024-09-21 11:44:12,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:12,690 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:44:12,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:44:12,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-09-21 11:44:12,691 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 11:44:12,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:12,762 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-09-21 11:44:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 11:44:12,763 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 11:44:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:12,764 INFO L225 Difference]: With dead ends: 42 [2024-09-21 11:44:12,764 INFO L226 Difference]: Without dead ends: 34 [2024-09-21 11:44:12,764 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 11:44:12,765 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 11:44:12,765 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 11:44:12,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-21 11:44:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-09-21 11:44:12,772 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 11:44:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-09-21 11:44:12,773 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2024-09-21 11:44:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:12,773 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-09-21 11:44:12,773 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 11:44:12,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-09-21 11:44:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-21 11:44:12,774 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:12,774 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 11:44:12,787 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 11:44:12,978 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 11:44:12,979 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:12,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:12,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1466394034, now seen corresponding path program 1 times [2024-09-21 11:44:12,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:12,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180528912] [2024-09-21 11:44:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:12,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:13,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903671698] [2024-09-21 11:44:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:13,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:13,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:13,009 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 11:44:13,011 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 11:44:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:13,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-21 11:44:13,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:13,166 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 11:44:13,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:13,286 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-21 11:44:13,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:13,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180528912] [2024-09-21 11:44:13,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:13,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903671698] [2024-09-21 11:44:13,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903671698] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:13,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:44:13,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-09-21 11:44:13,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626014864] [2024-09-21 11:44:13,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:13,287 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-21 11:44:13,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:13,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-21 11:44:13,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-21 11:44:13,288 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-21 11:44:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:13,533 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-09-21 11:44:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-21 11:44:13,534 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 31 [2024-09-21 11:44:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:13,535 INFO L225 Difference]: With dead ends: 47 [2024-09-21 11:44:13,535 INFO L226 Difference]: Without dead ends: 43 [2024-09-21 11:44:13,535 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-21 11:44:13,536 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:13,536 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 166 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:44:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-21 11:44:13,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2024-09-21 11:44:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 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 11:44:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-09-21 11:44:13,547 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2024-09-21 11:44:13,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:13,548 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-09-21 11:44:13,548 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-21 11:44:13,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:13,548 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-09-21 11:44:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-21 11:44:13,550 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:13,550 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 11:44:13,578 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 11:44:13,751 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 11:44:13,751 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:13,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:13,751 INFO L85 PathProgramCache]: Analyzing trace with hash 313414799, now seen corresponding path program 1 times [2024-09-21 11:44:13,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:13,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858840048] [2024-09-21 11:44:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:13,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:13,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:13,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:13,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:44:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:13,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:44:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:13,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:44:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-21 11:44:13,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858840048] [2024-09-21 11:44:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858840048] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:44:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797430020] [2024-09-21 11:44:13,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:13,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:13,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:13,892 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 11:44:13,893 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 11:44:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:13,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-21 11:44:13,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:14,224 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 11:44:14,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:14,668 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 11:44:14,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797430020] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:14,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:44:14,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 11] total 27 [2024-09-21 11:44:14,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496697176] [2024-09-21 11:44:14,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:14,669 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-21 11:44:14,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:14,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-21 11:44:14,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2024-09-21 11:44:14,671 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 27 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 10 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-21 11:44:16,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:16,059 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2024-09-21 11:44:16,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-21 11:44:16,060 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 10 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 38 [2024-09-21 11:44:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:16,060 INFO L225 Difference]: With dead ends: 51 [2024-09-21 11:44:16,060 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 11:44:16,061 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=386, Invalid=1684, Unknown=0, NotChecked=0, Total=2070 [2024-09-21 11:44:16,062 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:16,062 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 193 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:44:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 11:44:16,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 11:44:16,063 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 11:44:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 11:44:16,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2024-09-21 11:44:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:16,063 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 11:44:16,063 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 10 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-21 11:44:16,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:16,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 11:44:16,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 11:44:16,066 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 11:44:16,079 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 11:44:16,266 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 11:44:16,269 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-21 11:44:16,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 11:44:16,837 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 11:44:16,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:44:16 BoogieIcfgContainer [2024-09-21 11:44:16,850 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 11:44:16,850 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 11:44:16,850 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 11:44:16,851 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 11:44:16,851 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:11" (3/4) ... [2024-09-21 11:44:16,852 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 11:44:16,903 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 11:44:16,903 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 11:44:16,904 INFO L158 Benchmark]: Toolchain (without parser) took 5989.87ms. Allocated memory was 144.7MB in the beginning and 281.0MB in the end (delta: 136.3MB). Free memory was 74.9MB in the beginning and 243.5MB in the end (delta: -168.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:44:16,904 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 144.7MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:44:16,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.25ms. Allocated memory was 144.7MB in the beginning and 232.8MB in the end (delta: 88.1MB). Free memory was 74.6MB in the beginning and 204.3MB in the end (delta: -129.6MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2024-09-21 11:44:16,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.49ms. Allocated memory is still 232.8MB. Free memory was 204.2MB in the beginning and 203.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:44:16,905 INFO L158 Benchmark]: Boogie Preprocessor took 22.43ms. Allocated memory is still 232.8MB. Free memory was 203.2MB in the beginning and 201.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:44:16,905 INFO L158 Benchmark]: RCFGBuilder took 269.11ms. Allocated memory is still 232.8MB. Free memory was 201.4MB in the beginning and 192.8MB in the end (delta: 8.5MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2024-09-21 11:44:16,905 INFO L158 Benchmark]: TraceAbstraction took 5410.89ms. Allocated memory was 232.8MB in the beginning and 281.0MB in the end (delta: 48.2MB). Free memory was 192.8MB in the beginning and 245.6MB in the end (delta: -52.8MB). Peak memory consumption was 127.6MB. Max. memory is 16.1GB. [2024-09-21 11:44:16,905 INFO L158 Benchmark]: Witness Printer took 53.06ms. Allocated memory is still 281.0MB. Free memory was 245.6MB in the beginning and 243.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:44:16,907 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 144.7MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.25ms. Allocated memory was 144.7MB in the beginning and 232.8MB in the end (delta: 88.1MB). Free memory was 74.6MB in the beginning and 204.3MB in the end (delta: -129.6MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.49ms. Allocated memory is still 232.8MB. Free memory was 204.2MB in the beginning and 203.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.43ms. Allocated memory is still 232.8MB. Free memory was 203.2MB in the beginning and 201.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 269.11ms. Allocated memory is still 232.8MB. Free memory was 201.4MB in the beginning and 192.8MB in the end (delta: 8.5MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5410.89ms. Allocated memory was 232.8MB in the beginning and 281.0MB in the end (delta: 48.2MB). Free memory was 192.8MB in the beginning and 245.6MB in the end (delta: -52.8MB). Peak memory consumption was 127.6MB. Max. memory is 16.1GB. * Witness Printer took 53.06ms. Allocated memory is still 281.0MB. Free memory was 245.6MB in the beginning and 243.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 4.8s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 80 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 566 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 466 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 593 IncrementalHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 100 mSDtfsCounter, 593 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 269 ConstructedInterpolants, 3 QuantifiedInterpolants, 1063 SizeOfPredicates, 11 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 64/81 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 < ((long long) X + 1)) || (((__int128) y * x) == (((__int128) X * y) + y))) && (X <= 10)) && ((((long long) Y * 2) + (2 * ((__int128) Y * x))) == (((((__int128) X * y) * 2) + X) + v))) && (0 <= Y)) && (0 <= X)) - 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 11:44:16,926 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