./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-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 e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps6-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 dbc7fc96c6d4708331280184201322c719c7fb1504d84fafd0b9583653597d2e --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 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:07:36,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:07:36,713 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 15:07:36,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:07:36,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:07:36,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:07:36,737 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:07:36,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:07:36,738 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:07:36,739 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:07:36,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 15:07:36,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 15:07:36,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:07:36,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:07:36,742 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:07:36,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:07:36,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:07:36,745 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:07:36,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:07:36,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:07:36,746 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:07:36,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:07:36,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:07:36,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:07:36,748 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:07:36,748 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:07:36,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:07:36,749 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:07:36,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:07:36,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:07:36,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:07:36,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:07:36,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:07:36,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 15:07:36,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 15:07:36,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 15:07:36,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 15:07:36,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 15:07:36,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 15:07:36,753 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 15:07:36,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 15:07:36,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 15:07:36,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbc7fc96c6d4708331280184201322c719c7fb1504d84fafd0b9583653597d2e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 15:07:37,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:07:37,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:07:37,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:07:37,040 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:07:37,041 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:07:37,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c [2024-10-15 15:07:38,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:07:38,611 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:07:38,612 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c [2024-10-15 15:07:38,618 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4e7b94b66/b8d9da5eb36a4c659190ba5622327501/FLAGdfa57fe69 [2024-10-15 15:07:39,008 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4e7b94b66/b8d9da5eb36a4c659190ba5622327501 [2024-10-15 15:07:39,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:07:39,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 15:07:39,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:07:39,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:07:39,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:07:39,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29aea783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39, skipping insertion in model container [2024-10-15 15:07:39,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,043 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:07:39,239 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/ps6-ll_valuebound2.c[458,471] [2024-10-15 15:07:39,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:07:39,272 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 15:07:39,285 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/ps6-ll_valuebound2.c[458,471] [2024-10-15 15:07:39,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:07:39,316 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:07:39,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39 WrapperNode [2024-10-15 15:07:39,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:07:39,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:07:39,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:07:39,319 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:07:39,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,339 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:07:39,339 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:07:39,340 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:07:39,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:07:39,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:07:39,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,352 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,365 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]. [2024-10-15 15:07:39,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:07:39,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:07:39,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:07:39,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:07:39,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (1/1) ... [2024-10-15 15:07:39,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:07:39,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:07:39,414 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) [2024-10-15 15:07:39,433 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 [2024-10-15 15:07:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:07:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-15 15:07:39,516 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-15 15:07:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:07:39,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:07:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 15:07:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:07:39,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:07:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:07:39,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:07:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 15:07:39,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 15:07:39,583 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:07:39,589 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:07:39,765 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-15 15:07:39,765 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:07:39,790 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:07:39,791 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 15:07:39,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:39 BoogieIcfgContainer [2024-10-15 15:07:39,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:07:39,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 15:07:39,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 15:07:39,797 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 15:07:39,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:39" (1/3) ... [2024-10-15 15:07:39,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e8f290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:39, skipping insertion in model container [2024-10-15 15:07:39,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:39" (2/3) ... [2024-10-15 15:07:39,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e8f290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:39, skipping insertion in model container [2024-10-15 15:07:39,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:39" (3/3) ... [2024-10-15 15:07:39,801 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound2.c [2024-10-15 15:07:39,818 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 15:07:39,818 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 15:07:39,876 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 15:07:39,882 INFO L333 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;@5e469054, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 15:07:39,882 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 15:07:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 15:07:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-15 15:07:39,895 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:07:39,896 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:07:39,896 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:07:39,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:07:39,901 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-10-15 15:07:39,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:07:39,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663144359] [2024-10-15 15:07:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:07:39,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:07:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:40,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:07:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:40,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:07:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:40,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:07:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:07:40,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:07:40,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663144359] [2024-10-15 15:07:40,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663144359] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:07:40,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:07:40,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 15:07:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515958921] [2024-10-15 15:07:40,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:07:40,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-15 15:07:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:07:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-15 15:07:40,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 15:07:40,150 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (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) [2024-10-15 15:07:40,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:07:40,174 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-10-15 15:07:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-15 15:07:40,178 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (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 21 [2024-10-15 15:07:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:07:40,184 INFO L225 Difference]: With dead ends: 48 [2024-10-15 15:07:40,185 INFO L226 Difference]: Without dead ends: 23 [2024-10-15 15:07:40,188 INFO L431 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 [2024-10-15 15:07:40,191 INFO L432 NwaCegarLoop]: 28 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, 28 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 [2024-10-15 15:07:40,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:07:40,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-15 15:07:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-15 15:07:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 15:07:40,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-10-15 15:07:40,231 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-10-15 15:07:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:07:40,231 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-10-15 15:07:40,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (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) [2024-10-15 15:07:40,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:07:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-10-15 15:07:40,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-15 15:07:40,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:07:40,237 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:07:40,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 15:07:40,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:07:40,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:07:40,238 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-10-15 15:07:40,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:07:40,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401075965] [2024-10-15 15:07:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:07:40,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:07:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:07:40,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145939066] [2024-10-15 15:07:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:07:40,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:07:40,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:07:40,283 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) [2024-10-15 15:07:40,285 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 15:07:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:40,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 15:07:40,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:07:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:07:40,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 15:07:40,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:07:40,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401075965] [2024-10-15 15:07:40,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:07:40,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145939066] [2024-10-15 15:07:40,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145939066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:07:40,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:07:40,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 15:07:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487790533] [2024-10-15 15:07:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:07:40,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:07:40,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:07:40,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:07:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:07:40,473 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (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) [2024-10-15 15:07:40,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:07:40,538 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-10-15 15:07:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:07:40,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (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 21 [2024-10-15 15:07:40,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:07:40,541 INFO L225 Difference]: With dead ends: 34 [2024-10-15 15:07:40,541 INFO L226 Difference]: Without dead ends: 30 [2024-10-15 15:07:40,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 15:07:40,543 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 15:07:40,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:07:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-15 15:07:40,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-15 15:07:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 15:07:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-10-15 15:07:40,555 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-10-15 15:07:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:07:40,556 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-10-15 15:07:40,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (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) [2024-10-15 15:07:40,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:07:40,557 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-10-15 15:07:40,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-15 15:07:40,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:07:40,558 INFO L215 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] [2024-10-15 15:07:40,571 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 15:07:40,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:07:40,760 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:07:40,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:07:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-10-15 15:07:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:07:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991046927] [2024-10-15 15:07:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:07:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:07:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:07:40,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120291951] [2024-10-15 15:07:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:07:40,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:07:40,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:07:40,790 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) [2024-10-15 15:07:40,795 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 15:07:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:40,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-15 15:07:40,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:07:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:07:40,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:07:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 15:07:41,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:07:41,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991046927] [2024-10-15 15:07:41,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:07:41,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120291951] [2024-10-15 15:07:41,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120291951] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-15 15:07:41,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 15:07:41,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-10-15 15:07:41,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481644865] [2024-10-15 15:07:41,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:07:41,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:07:41,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:07:41,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:07:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 15:07:41,067 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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) [2024-10-15 15:07:41,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:07:41,131 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-10-15 15:07:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:07:41,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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 28 [2024-10-15 15:07:41,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:07:41,133 INFO L225 Difference]: With dead ends: 36 [2024-10-15 15:07:41,133 INFO L226 Difference]: Without dead ends: 32 [2024-10-15 15:07:41,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 15:07:41,135 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 15:07:41,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:07:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-15 15:07:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-10-15 15:07:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 15:07:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-10-15 15:07:41,158 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-10-15 15:07:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:07:41,159 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-10-15 15:07:41,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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) [2024-10-15 15:07:41,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:07:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-10-15 15:07:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-15 15:07:41,162 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:07:41,163 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:07:41,180 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 15:07:41,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:07:41,364 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:07:41,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:07:41,364 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-10-15 15:07:41,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:07:41,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553920069] [2024-10-15 15:07:41,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:07:41,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:07:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:07:41,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807304663] [2024-10-15 15:07:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:07:41,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:07:41,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:07:41,411 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) [2024-10-15 15:07:41,412 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 15:07:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:41,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-15 15:07:41,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:07:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 15:07:41,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:07:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 15:07:42,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:07:42,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553920069] [2024-10-15 15:07:42,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:07:42,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807304663] [2024-10-15 15:07:42,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807304663] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:07:42,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 15:07:42,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-10-15 15:07:42,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480960745] [2024-10-15 15:07:42,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 15:07:42,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 15:07:42,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:07:42,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 15:07:42,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-10-15 15:07:42,212 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-15 15:07:42,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:07:42,560 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-10-15 15:07:42,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-15 15:07:42,561 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-10-15 15:07:42,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:07:42,563 INFO L225 Difference]: With dead ends: 53 [2024-10-15 15:07:42,564 INFO L226 Difference]: Without dead ends: 45 [2024-10-15 15:07:42,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-10-15 15:07:42,565 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:07:42,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 178 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:07:42,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-15 15:07:42,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-15 15:07:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-15 15:07:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-10-15 15:07:42,592 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 39 [2024-10-15 15:07:42,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:07:42,593 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-10-15 15:07:42,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-15 15:07:42,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:07:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-10-15 15:07:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-15 15:07:42,595 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:07:42,596 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:07:42,614 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 15:07:42,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:07:42,801 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:07:42,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:07:42,801 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-10-15 15:07:42,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:07:42,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766819754] [2024-10-15 15:07:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:07:42,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:07:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:43,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:07:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:43,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:07:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:43,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:07:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:43,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-15 15:07:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:43,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 15:07:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:43,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 15:07:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:43,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 15:07:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:43,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 15:07:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:43,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 15:07:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:07:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-15 15:07:43,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:07:43,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766819754] [2024-10-15 15:07:43,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766819754] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:07:43,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143374842] [2024-10-15 15:07:43,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:07:43,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:07:43,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:07:43,322 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) [2024-10-15 15:07:43,323 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 15:07:43,389 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:07:43,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:07:43,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 15:07:43,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:07:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-15 15:07:43,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:07:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-15 15:07:43,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143374842] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:07:43,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:07:43,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-10-15 15:07:43,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546540213] [2024-10-15 15:07:43,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:07:43,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 15:07:43,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:07:43,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 15:07:43,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-15 15:07:43,712 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) [2024-10-15 15:07:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:07:43,803 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2024-10-15 15:07:43,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 15:07:43,804 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) Word has length 60 [2024-10-15 15:07:43,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:07:43,805 INFO L225 Difference]: With dead ends: 51 [2024-10-15 15:07:43,805 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 15:07:43,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-10-15 15:07:43,806 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:07:43,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 134 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:07:43,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 15:07:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 15:07:43,810 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) [2024-10-15 15:07:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 15:07:43,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2024-10-15 15:07:43,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:07:43,810 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 15:07:43,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) [2024-10-15 15:07:43,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:07:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 15:07:43,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 15:07:43,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 15:07:43,831 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 15:07:44,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:07:44,017 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-10-15 15:07:44,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 15:07:45,096 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 15:07:45,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:07:45 BoogieIcfgContainer [2024-10-15 15:07:45,117 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 15:07:45,118 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 15:07:45,118 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 15:07:45,118 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 15:07:45,118 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:39" (3/4) ... [2024-10-15 15:07:45,120 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 15:07:45,172 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 15:07:45,172 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 15:07:45,173 INFO L158 Benchmark]: Toolchain (without parser) took 6158.37ms. Allocated memory was 176.2MB in the beginning and 237.0MB in the end (delta: 60.8MB). Free memory was 107.8MB in the beginning and 82.9MB in the end (delta: 24.9MB). Peak memory consumption was 88.5MB. Max. memory is 16.1GB. [2024-10-15 15:07:45,175 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 176.2MB. Free memory was 135.3MB in the beginning and 135.2MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:07:45,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.53ms. Allocated memory is still 176.2MB. Free memory was 107.5MB in the beginning and 94.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 15:07:45,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.43ms. Allocated memory is still 176.2MB. Free memory was 94.9MB in the beginning and 93.9MB in the end (delta: 968.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:07:45,176 INFO L158 Benchmark]: Boogie Preprocessor took 41.77ms. Allocated memory is still 176.2MB. Free memory was 93.9MB in the beginning and 92.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:07:45,177 INFO L158 Benchmark]: RCFGBuilder took 408.50ms. Allocated memory is still 176.2MB. Free memory was 92.1MB in the beginning and 140.0MB in the end (delta: -47.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-15 15:07:45,177 INFO L158 Benchmark]: TraceAbstraction took 5323.33ms. Allocated memory was 176.2MB in the beginning and 237.0MB in the end (delta: 60.8MB). Free memory was 139.3MB in the beginning and 86.0MB in the end (delta: 53.3MB). Peak memory consumption was 118.2MB. Max. memory is 16.1GB. [2024-10-15 15:07:45,177 INFO L158 Benchmark]: Witness Printer took 54.55ms. Allocated memory is still 237.0MB. Free memory was 86.0MB in the beginning and 82.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:07:45,179 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 176.2MB. Free memory was 135.3MB in the beginning and 135.2MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.53ms. Allocated memory is still 176.2MB. Free memory was 107.5MB in the beginning and 94.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.43ms. Allocated memory is still 176.2MB. Free memory was 94.9MB in the beginning and 93.9MB in the end (delta: 968.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.77ms. Allocated memory is still 176.2MB. Free memory was 93.9MB in the beginning and 92.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 408.50ms. Allocated memory is still 176.2MB. Free memory was 92.1MB in the beginning and 140.0MB in the end (delta: -47.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 5323.33ms. Allocated memory was 176.2MB in the beginning and 237.0MB in the end (delta: 60.8MB). Free memory was 139.3MB in the beginning and 86.0MB in the end (delta: 53.3MB). Peak memory consumption was 118.2MB. Max. memory is 16.1GB. * Witness Printer took 54.55ms. Allocated memory is still 237.0MB. Free memory was 86.0MB in the beginning and 82.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 490 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 381 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 236 IncrementalHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 109 mSDtfsCounter, 236 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 265 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 34, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 347 ConstructedInterpolants, 0 QuantifiedInterpolants, 1317 SizeOfPredicates, 5 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 360/392 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: 28]: Loop Invariant Derived loop invariant: ((((((0 <= k) && (((__int128) y * y) == ((__int128) k * y))) && ((c + ((__int128) c * y)) == (y + ((__int128) y * y)))) && (k <= 2)) && ((((2 * ((((((__int128) y * y) * y) * y) * y) * y)) + (6 * (((((__int128) y * y) * y) * y) * y))) + (5 * ((((__int128) y * y) * y) * y))) == (((__int128) x * 12) + ((__int128) y * y)))) || (((((1 <= k) && (y == 1)) && (k <= 2)) && (x == 1)) && (c == 1))) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 9]: 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! [2024-10-15 15:07:45,199 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