./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps2-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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 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/ps2-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 464ff86972962e190fa8e3bdd89b592f22b90512739ab3fd4df7709eb39adee3 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 09:41:39,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 09:41:39,066 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 09:41:39,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 09:41:39,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 09:41:39,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 09:41:39,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 09:41:39,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 09:41:39,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 09:41:39,114 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 09:41:39,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 09:41:39,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 09:41:39,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 09:41:39,117 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 09:41:39,117 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 09:41:39,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 09:41:39,118 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 09:41:39,118 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 09:41:39,118 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 09:41:39,118 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 09:41:39,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 09:41:39,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 09:41:39,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 09:41:39,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 09:41:39,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 09:41:39,124 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 09:41:39,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 09:41:39,124 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 09:41:39,124 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 09:41:39,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 09:41:39,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 09:41:39,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 09:41:39,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:41:39,125 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 09:41:39,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 09:41:39,126 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 09:41:39,126 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 09:41:39,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 09:41:39,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 09:41:39,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 09:41:39,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 09:41:39,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 09:41:39,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 464ff86972962e190fa8e3bdd89b592f22b90512739ab3fd4df7709eb39adee3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 09:41:39,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 09:41:39,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 09:41:39,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 09:41:39,447 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 09:41:39,447 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 09:41:39,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound10.c [2024-09-13 09:41:40,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 09:41:41,113 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 09:41:41,113 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound10.c [2024-09-13 09:41:41,119 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c3e55afa2/d03053eca7554b06bd58686edbb80a38/FLAG518fafaba [2024-09-13 09:41:41,497 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c3e55afa2/d03053eca7554b06bd58686edbb80a38 [2024-09-13 09:41:41,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 09:41:41,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 09:41:41,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 09:41:41,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 09:41:41,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 09:41:41,510 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104b1498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41, skipping insertion in model container [2024-09-13 09:41:41,511 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,526 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 09:41:41,658 WARN L247 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/ps2-ll_valuebound10.c[454,467] [2024-09-13 09:41:41,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:41:41,679 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 09:41:41,692 WARN L247 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/ps2-ll_valuebound10.c[454,467] [2024-09-13 09:41:41,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:41:41,711 INFO L204 MainTranslator]: Completed translation [2024-09-13 09:41:41,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41 WrapperNode [2024-09-13 09:41:41,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 09:41:41,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 09:41:41,713 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 09:41:41,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 09:41:41,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,725 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,731 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 09:41:41,732 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 09:41:41,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 09:41:41,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 09:41:41,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 09:41:41,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,743 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,758 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]. [2024-09-13 09:41:41,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 09:41:41,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 09:41:41,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 09:41:41,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 09:41:41,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (1/1) ... [2024-09-13 09:41:41,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:41:41,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:41:41,805 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) [2024-09-13 09:41:41,812 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 [2024-09-13 09:41:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 09:41:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 09:41:41,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 09:41:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 09:41:41,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 09:41:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 09:41:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 09:41:41,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 09:41:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 09:41:41,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 09:41:41,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 09:41:41,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 09:41:41,920 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 09:41:41,922 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 09:41:42,056 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-13 09:41:42,056 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 09:41:42,094 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 09:41:42,094 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 09:41:42,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:41:42 BoogieIcfgContainer [2024-09-13 09:41:42,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 09:41:42,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 09:41:42,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 09:41:42,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 09:41:42,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 09:41:41" (1/3) ... [2024-09-13 09:41:42,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25764b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:41:42, skipping insertion in model container [2024-09-13 09:41:42,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:41:41" (2/3) ... [2024-09-13 09:41:42,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25764b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:41:42, skipping insertion in model container [2024-09-13 09:41:42,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:41:42" (3/3) ... [2024-09-13 09:41:42,122 INFO L112 eAbstractionObserver]: Analyzing ICFG ps2-ll_valuebound10.c [2024-09-13 09:41:42,146 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 09:41:42,146 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 09:41:42,189 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 09:41:42,195 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;@11867ca9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 09:41:42,195 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 09:41:42,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 09:41:42,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-13 09:41:42,206 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:41:42,206 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:41:42,207 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:41:42,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:41:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1065431329, now seen corresponding path program 1 times [2024-09-13 09:41:42,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:41:42,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912050879] [2024-09-13 09:41:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:41:42,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:41:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:41:42,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:41:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:41:42,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:41:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:41:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 09:41:42,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:41:42,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912050879] [2024-09-13 09:41:42,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912050879] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:41:42,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:41:42,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 09:41:42,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144449488] [2024-09-13 09:41:42,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:41:42,397 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 09:41:42,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:41:42,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 09:41:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 09:41:42,419 INFO L87 Difference]: Start difference. First operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 09:41:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:41:42,451 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2024-09-13 09:41:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 09:41:42,454 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-13 09:41:42,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:41:42,461 INFO L225 Difference]: With dead ends: 42 [2024-09-13 09:41:42,461 INFO L226 Difference]: Without dead ends: 21 [2024-09-13 09:41:42,464 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 09:41:42,469 INFO L434 NwaCegarLoop]: 24 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, 24 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 [2024-09-13 09:41:42,471 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:41:42,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-13 09:41:42,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-13 09:41:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 09:41:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-13 09:41:42,501 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2024-09-13 09:41:42,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:41:42,502 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-13 09:41:42,502 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 09:41:42,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:41:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-13 09:41:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-13 09:41:42,504 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:41:42,504 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:41:42,504 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 09:41:42,505 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:41:42,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:41:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash -392820709, now seen corresponding path program 1 times [2024-09-13 09:41:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:41:42,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615276114] [2024-09-13 09:41:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:41:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:41:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 09:41:42,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004378291] [2024-09-13 09:41:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:41:42,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:41:42,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:41:42,537 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) [2024-09-13 09:41:42,540 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 09:41:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:41:42,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 09:41:42,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:41:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 09:41:42,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 09:41:42,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:41:42,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615276114] [2024-09-13 09:41:42,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 09:41:42,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004378291] [2024-09-13 09:41:42,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004378291] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:41:42,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:41:42,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 09:41:42,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834179275] [2024-09-13 09:41:42,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:41:42,694 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 09:41:42,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:41:42,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 09:41:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:41:42,696 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 09:41:42,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:41:42,754 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2024-09-13 09:41:42,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 09:41:42,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-13 09:41:42,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:41:42,760 INFO L225 Difference]: With dead ends: 31 [2024-09-13 09:41:42,760 INFO L226 Difference]: Without dead ends: 28 [2024-09-13 09:41:42,760 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 09:41:42,761 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:41:42,762 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:41:42,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-13 09:41:42,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-13 09:41:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 09:41:42,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-09-13 09:41:42,775 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2024-09-13 09:41:42,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:41:42,775 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-09-13 09:41:42,776 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 09:41:42,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:41:42,778 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-09-13 09:41:42,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-13 09:41:42,778 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:41:42,779 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:41:42,797 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 09:41:42,983 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 [2024-09-13 09:41:42,984 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:41:42,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:41:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash -543150969, now seen corresponding path program 1 times [2024-09-13 09:41:42,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:41:42,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929434827] [2024-09-13 09:41:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:41:42,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:41:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 09:41:43,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237465228] [2024-09-13 09:41:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:41:43,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:41:43,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:41:43,026 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) [2024-09-13 09:41:43,028 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 09:41:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:41:43,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 09:41:43,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:41:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 09:41:43,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:41:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 09:41:43,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:41:43,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929434827] [2024-09-13 09:41:43,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 09:41:43,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237465228] [2024-09-13 09:41:43,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237465228] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 09:41:43,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 09:41:43,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-13 09:41:43,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903622661] [2024-09-13 09:41:43,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:41:43,296 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 09:41:43,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:41:43,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 09:41:43,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 09:41:43,298 INFO L87 Difference]: Start difference. First operand 28 states and 29 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 09:41:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:41:43,342 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-13 09:41:43,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 09:41:43,343 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-13 09:41:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:41:43,344 INFO L225 Difference]: With dead ends: 28 [2024-09-13 09:41:43,344 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 09:41:43,345 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-13 09:41:43,346 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:41:43,347 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 53 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:41:43,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 09:41:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 09:41:43,348 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) [2024-09-13 09:41:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 09:41:43,348 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2024-09-13 09:41:43,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:41:43,348 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 09:41:43,348 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 09:41:43,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:41:43,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 09:41:43,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 09:41:43,352 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 09:41:43,367 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 09:41:43,556 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 [2024-09-13 09:41:43,559 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-09-13 09:41:43,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 09:41:43,661 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 09:41:43,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 09:41:43 BoogieIcfgContainer [2024-09-13 09:41:43,675 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 09:41:43,676 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 09:41:43,676 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 09:41:43,676 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 09:41:43,676 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:41:42" (3/4) ... [2024-09-13 09:41:43,678 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 09:41:43,681 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 09:41:43,681 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 09:41:43,681 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 09:41:43,681 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 09:41:43,684 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-09-13 09:41:43,684 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-13 09:41:43,685 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 09:41:43,685 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 09:41:43,775 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 09:41:43,775 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 09:41:43,775 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 09:41:43,776 INFO L158 Benchmark]: Toolchain (without parser) took 2274.87ms. Allocated memory is still 155.2MB. Free memory was 121.1MB in the beginning and 60.8MB in the end (delta: 60.3MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2024-09-13 09:41:43,776 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:41:43,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.55ms. Allocated memory is still 155.2MB. Free memory was 121.1MB in the beginning and 109.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 09:41:43,777 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.08ms. Allocated memory is still 155.2MB. Free memory was 109.3MB in the beginning and 108.6MB in the end (delta: 676.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:41:43,777 INFO L158 Benchmark]: Boogie Preprocessor took 37.07ms. Allocated memory is still 155.2MB. Free memory was 108.6MB in the beginning and 106.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 09:41:43,777 INFO L158 Benchmark]: RCFGBuilder took 324.53ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 126.5MB in the end (delta: -20.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 09:41:43,777 INFO L158 Benchmark]: TraceAbstraction took 1579.54ms. Allocated memory is still 155.2MB. Free memory was 125.6MB in the beginning and 64.9MB in the end (delta: 60.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-09-13 09:41:43,778 INFO L158 Benchmark]: Witness Printer took 99.50ms. Allocated memory is still 155.2MB. Free memory was 64.9MB in the beginning and 60.8MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 09:41:43,779 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.55ms. Allocated memory is still 155.2MB. Free memory was 121.1MB in the beginning and 109.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.08ms. Allocated memory is still 155.2MB. Free memory was 109.3MB in the beginning and 108.6MB in the end (delta: 676.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.07ms. Allocated memory is still 155.2MB. Free memory was 108.6MB in the beginning and 106.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 324.53ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 126.5MB in the end (delta: -20.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1579.54ms. Allocated memory is still 155.2MB. Free memory was 125.6MB in the beginning and 64.9MB in the end (delta: 60.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Witness Printer took 99.50ms. Allocated memory is still 155.2MB. Free memory was 64.9MB in the beginning and 60.8MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. 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, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 142 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 86 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 56 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 12, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 168 SizeOfPredicates, 2 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 6/8 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: 27]: Loop Invariant Derived loop invariant: (((__int128) x * 2) == (y + ((__int128) y * y))) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-13 09:41:43,810 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